TIGER

Journal Articles: 1,000 results
Sustainability Education and the ACS Committee on Environmental Improvement  Laura E. Pence
The Education subcommittee of the Committee on Environmental Improvement is working on several complementary sustainability projects including informing chemistry departments about energy efficient fume hood management and working with textbook authors to incorporate sustainability throughout their educational materials.
Pence, Laura E. J. Chem. Educ. 2008, 85, 1608.
Laboratory Equipment / Apparatus |
Laboratory Management
An Inexpensive Semiautomatic Pressurized Microfiltration Device  E. Rodríguez-Fernandez, M. A. Vicente, J. J. Criado, and J. L. Manzano
Using the device shown, the filtration of small volumes (= 10 mL) of liquid can be facilitated by replacing the vacuum or manual pressure on the piston with pressure exerted by a rubber band on the piston. The filtration is thus conducted in a semiautomatic way.
Rodríguez-Fernandez, E.; Vicente, M. A.; Criado, J. J.; Manzano, J. L. J. Chem. Educ. 2008, 85, 1051.
Laboratory Equipment / Apparatus |
Liquids |
Microscale Lab
Modification to Synthesis of Methyl Diantilis  William H. Miles
After we published the Synthesis of Methyl Diantilis, a Commercially Important Fragrance,we encountered a problem with the catalyst, Amberlyst-15, used in the second step. A revised laboratory procedure has replaced the original supplement available at JCE Online.
Miles, William H. J. Chem. Educ. 2008, 85, 917.
Catalysis |
Synthesis |
Laboratory Equipment / Apparatus
Tin(II) Chloride Dihydrate  Jay A. Young
Proper handling and safety tips for tin(II) chloride dihydrate are discussed.
Young, Jay A. J. Chem. Educ. 2008, 85, 194.
Laboratory Equipment / Apparatus |
Laboratory Management
Tin(II) Oxide  Jay A. Young
Proper handling and safety tips for tin(II) oxide are discussed.
Young, Jay A. J. Chem. Educ. 2008, 85, 193.
Laboratory Equipment / Apparatus |
Laboratory Management
Variable Temperature Equipment for a Commercial Magnetic Susceptibility Balance  Albert Lötz
Variable temperature equipment for the magnetic susceptibility balance MSB-MK1 of Sherwood Scientific, Ltd., is described. Whereas the balance as sold commercially can be used only for room temperature measurements, the setup presented here extends the temperature range from 20C to 80C without a loss in performance.
Lötz, Albert. J. Chem. Educ. 2008, 85, 107.
Instrumental Methods |
Laboratory Equipment / Apparatus |
Magnetic Properties
Using Ozone in Organic Chemistry Lab: The Ozonolysis of Eugenol  Bruce M. Branan, Joshua T. Butcher, and Lawrence R. Olsen
This organic laboratory involves the ozonolysis of eugenol (clove oil) followed by a reductive workup that generates an aldehyde easily identified by its NMR and IR spectra.
Branan, Bruce M.; Butcher, Joshua T.; Olsen, Lawrence R. J. Chem. Educ. 2007, 84, 1979.
Aldehydes / Ketones |
Gases |
IR Spectroscopy |
Laboratory Equipment / Apparatus |
Natural Products |
NMR Spectroscopy |
Synthesis |
Oxidation / Reduction
Catalytic Hydrogenation of Maleic Acid at Moderate Pressures  Kwesi Amoa
This article demonstrates the reduction of maleic acid in about 90 minutes using moderate-pressure catalytic hydrogenation.
Amoa, Kwesi. J. Chem. Educ. 2007, 84, 1948.
Alkenes |
Catalysis |
Chromatography |
IR Spectroscopy |
Laboratory Equipment / Apparatus |
Spectroscopy |
Thin Layer Chromatography
A One-Hour Practical Lab Exam for Organic Chemistry  Edward G. Neeland
Presents a lab practical for second-year organic chemistry that tests lab skills and theory acquired from laboratory experiences and may serve as an effective end-of-term exam.
Neeland, Edward G. J. Chem. Educ. 2007, 84, 1453.
Instrumental Methods |
Laboratory Equipment / Apparatus
The Quartz-Crystal Microbalance in an Undergraduate Laboratory Experiment  Vladimir Tsionsky
Describes a typical student experiment with the quartz-crystal microbalance used as a mass sensor during the electrochemical deposition and dissolution of copper.
Tsionsky, Vladimir. J. Chem. Educ. 2007, 84, 1340.
Electrochemistry |
Laboratory Equipment / Apparatus |
Liquids |
Metals
The Quartz-Crystal Microbalance in an Undergraduate Laboratory Experiment  Vladimir Tsionsky
Presents the fundamentals of quartz-crystal microbalance techniques and instrumentation.
Tsionsky, Vladimir. J. Chem. Educ. 2007, 84, 1334.
Electrochemistry |
Laboratory Equipment / Apparatus |
Liquids
Building a Low-Cost, Six-Electrode Instrument To Measure Electrical Properties of Self-Assembled Monolayers of Gold Nanoparticles  Ralph W. Gerber and Maria Oliver-Hoyo
The multimeter testing apparatus described is an inexpensive and easy to construct analogdigital meter that can be used for quantitative measurements of self-assembled gold monolayers.
Gerber, Ralph W.; Oliver-Hoyo, Maria. J. Chem. Educ. 2007, 84, 1177.
Laboratory Equipment / Apparatus |
Nanotechnology |
Surface Science |
Electrochemistry
A Dam for Cup Sinks To Keep Chemical Spills from the Drain  Frederick C. Sauls and Janine M. Alexis
A dam of gasket material around the sink can resolve the difficulty of chemical spills in the hood.
Sauls, Frederick C.; Alexis, Janine M. J. Chem. Educ. 2007, 84, 232.
Laboratory Equipment / Apparatus |
Laboratory Management
Incorporation of Microwave Synthesis into the Undergraduate Organic Laboratory  Alan R. Katritzky, Chunming Cai, Meghan D. Collins, Eric F. V. Scriven, Sandeep K. Singh, and E. Keller Barnhardt
Describes a simple way to effectively implement microwave synthesis into the undergraduate organic laboratory curriculum.
Katritzky, Alan R.; Cai, Chunming; Collins, Meghan D.; Scriven, Eric F. V.;Singh, Sandeep K.; Barnhardt, E. Keller. J. Chem. Educ. 2006, 83, 634.
Aromatic Compounds |
Laboratory Equipment / Apparatus |
Reactions |
Synthesis
JCE Chemical Laboratory Information Profiles (CLIPs) on CD-ROM. Abstract of JCE CLIPs 2005  Jon L. Holmes
All 106, one-page Chemical Laboratory Information Profiles, published from April 2001 through July 2005, have been collected as PDF files on a single CD-ROM, JCE CLIPs.
Holmes, Jon L. J. Chem. Educ. 2005, 82, 1744.
Laboratory Management |
Laboratory Equipment / Apparatus
Ammonium Thiocyanate  Jay A. Young
The hazards of ammonium thiocyanate are discussed.
Young, Jay A. J. Chem. Educ. 2005, 82, 1619.
Laboratory Management |
Laboratory Equipment / Apparatus
Ammonium Chloride  Jay A. Young
The hazards of ammonium chloride are discussed.
Young, Jay A. J. Chem. Educ. 2005, 82, 1618.
Laboratory Management |
Laboratory Equipment / Apparatus
Ammonium Dichromate  Jay A. Young
The hazards of ammonium dichromate are discussed.
Young, Jay A. J. Chem. Educ. 2005, 82, 1617.
Laboratory Management |
Laboratory Equipment / Apparatus
A Simple Low-Cost Lock-In Amplifier for the Laboratory  Sandip K. Sengupta, Jessica M. Farnham, and James E. Whitten
The construction of a simple, low-cost, stand-alone lock-in amplifier suitable for physical and analytical chemistry instructional laboratories is described. The instrument is useful for detecting and amplifying signals that are in-phase with a reference signal and is particularly important for optical experiments that employ a pulsed light source.
Sengupta, Sandip K.; Farnham, Jessica M.; Whitten, James E. J. Chem. Educ. 2005, 82, 1399.
Instrumental Methods |
Laboratory Equipment / Apparatus
An Improved Preparation of 2,4-Dinitrophenylhydrazine Reagent  Ben Ruekberg and Eric Rossoni
In the analysis of aldehydes and ketones (both for characterizing the functional group and identifying such compounds by the melting points of their derivatives), 2,4-dinitrophenylhydrazine reagent is often used. Of the several formulations of this reagent, the most popular uses sulfuric acid. The method involves making a paste of 2,4-dinitro-phenylhydrazine in concentrated sulfuric acid, dispersion of the paste in ethanol, addition of water, and the filtration of the reagent. This improvement uses milder conditions, which may obviate the need for the final filtration. Those responsible for preparation of stock reagent solutions for classes should note that this method facilitates scaling up the preparation.
Ruekberg, Ben; Rossoni, Eric. J. Chem. Educ. 2005, 82, 1310.
Aldehydes / Ketones |
Laboratory Equipment / Apparatus |
Laboratory Management
Teaching pH Measurements with a Student-Assembled Combination Quinhydrone Electrode  Fritz Scholz, Tim Steinhardt, Heike Kahlert, Jens R. Pörksen, and Jürgen Behnert
A combination pH electrode that can be assembled by the student is described. It consists of a glass holder and two sensors in the form of rubber stoppers that contain quinhydrone and graphite. The combination electrode is suitable to teach potentiometric measurements, pH measurements, and the interplay of acidbase and redox equilibria. The electrode meets highest safety standards and overcomes the troubles associated with the use of the conventional quinhydrone electrode.
Scholz, Fritz; Steinhardt, Tim; Kahlert, Heike; Pörksen, Jens R.; Behnert, Jürgen. J. Chem. Educ. 2005, 82, 782.
Acids / Bases |
pH |
Laboratory Equipment / Apparatus |
Electrochemistry
Weighing Paper Substitute  Ben Ruekberg
Patty paper sheets are suggested as a low-cost replacement for weighing paper.
Ruekberg, Ben. J. Chem. Educ. 2005, 82, 620.
Laboratory Equipment / Apparatus |
Laboratory Management
Cadmium  Jay A. Young
The hazards of cadmium are discussed.
Young, Jay A. J. Chem. Educ. 2005, 82, 521.
Metals |
Laboratory Equipment / Apparatus
Lithium  Jay A. Young
The hazards of lithium are discussed.
Young, Jay A. J. Chem. Educ. 2005, 82, 520.
Metals |
Laboratory Equipment / Apparatus
Copper(II) Nitrate Trihydrate  Jay A. Young
The hazards of copper(II) nitrate trihydrate are discussed.
Young, Jay A. J. Chem. Educ. 2005, 82, 375.
Laboratory Management |
Laboratory Equipment / Apparatus
Mercury Thermometer Replacements in Chemistry Laboratories   Barbara L. Foster
Every undergraduate student in a chemistry laboratory must use a thermometer at some point during his or her chemistry laboratory experience. The mercury-in-glass thermometers that are typically used in chemistry laboratories are easily broken. The resulting spilled mercury can easily become trapped under the laboratory benches and in the flooring material in the laboratory, exposing students and laboratory personnel to hazardous levels of mercury.
Foster, Barbara L. J. Chem. Educ. 2005, 82, 269.
Laboratory Equipment / Apparatus
Hydrogen Sulfide  Jay A. Young
The hazards of hydrogen sulfide are discussed.
Young, Jay A. J. Chem. Educ. 2005, 82, 202.
Laboratory Management |
Laboratory Equipment / Apparatus
Writing-Intensive Multimedia Projects in the Instrumental Methods Course  Hal Van Ryswyk
A writing-intensive, team-based multimedia project has been incorporated into the instrumental methods course. The project serves two student populations: students in the course gain an enhanced understanding of an instrumental technique through extensive, focused writing, while first-time instrument users outside of the course gain useful documentation and high-quality point-of-use training.
Van Ryswyk, Hal. J. Chem. Educ. 2005, 82, 70.
Instrumental Methods |
Laboratory Equipment / Apparatus
Gravimetric Titrations: In Support of Weight Titration Techniques  Richard W. Ramette
I write in support of the recommendations of Stephen Hawkes on gravimetric titrations. Weight titration techniques are, in my opinion, by far the best way to bring volumetric analysis into the 20th (let alone 21st) century.
Ramette, Richard W. J. Chem. Educ. 2004, 81, 1715.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis
Gravimetric Titrations: Save Time, Expense, and Error by Using Weight Burets  Stephen J. Hawkes
Two papers have shown the superiority of a cheap plastic squeeze bottle used as a weight buret over an expensive volumetric buret. These papers were published at a time, now past, when precise weighing was inconvenient.
Hawkes, Stephen J. J. Chem. Educ. 2004, 81, 1715.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis
Iron(III) Chloride  Jay A. Young
The hazards of iron(III) chloride are discussed.
Young, Jay A. J. Chem. Educ. 2004, 81, 1710.
Laboratory Management |
Laboratory Equipment / Apparatus
Lead(II) Nitrate  Jay A. Young
The hazards of lead(II) nitrate are discussed.
Young, Jay A. J. Chem. Educ. 2004, 81, 1709.
Laboratory Management |
Laboratory Equipment / Apparatus
Lead(II) Chromate  Jay A. Young
The hazards of lead(II) chromate are discussed.
Young, Jay A. J. Chem. Educ. 2004, 81, 1708.
Laboratory Management |
Laboratory Equipment / Apparatus
Potassium Aluminum Sulfate 12 Hydrate  Jay A. Young
The hazards of potassium aluminum sulfate 12 hydrate are discussed.
Young, Jay A. J. Chem. Educ. 2004, 81, 1563.
Laboratory Equipment / Apparatus
Tin  Jay A. Young
The hazards of tin are discussed.
Young, Jay A. J. Chem. Educ. 2004, 81, 1562.
Metals |
Laboratory Equipment / Apparatus
Low-Cost "Vacuum Desiccator"  Frederick Sweet
Described are individualized, low-cost, and safe desiccators that can be efficiently and rapidly made with an inexpensive kitchen aid sold for shrink-wrapping food. The device can be used for enclosing small vials or bottles and also jars that are too large to be placed in conventional glass or plastic desiccators. This shrink-wrapping device is proposed for producing "vacuum desiccators" in large undergraduate chemistry laboratories or in graduate and research laboratories.
Sweet, Frederick. J. Chem. Educ. 2004, 81, 1500.
Laboratory Equipment / Apparatus
Carbon Tetrachloride  Jay A. Young
The hazards of carbon tetrachloride are discussed.
Young, Jay A. J. Chem. Educ. 2004, 81, 1416.
Laboratory Management |
Laboratory Equipment / Apparatus
Dichloromethane  Jay A. Young
The hazards of dichloromethane are discussed.
Young, Jay A. J. Chem. Educ. 2004, 81, 1415.
Laboratory Management |
Laboratory Equipment / Apparatus
A Simple, Inexpensive Water-Jacketed Cuvette for the Spectronic 20  Jonathan E. Thompson and Jason Ting
A simple, inexpensive, water-jacketed cuvette for the Spectronic 20 is described. The cuvette and associated flow system can easily be constructed from materials commonly found in an undergraduate chemistry laboratory. As a demonstration of the cuvette's utility, we used the cuvette for the determination of the activation energy for the reaction between crystal violet and hydroxide ion. However, the cuvette may prove useful in a variety of applications in which a sample must be thermostated within a spectrophotometer.
Thompson, Jonathan E.; Ting, Jason. J. Chem. Educ. 2004, 81, 1341.
Laboratory Equipment / Apparatus |
Kinetics |
Spectroscopy
Mercury(II) Chloride  Jay A. Young
The hazards of mercury(II) chloride are discussed.
Young, Jay A. J. Chem. Educ. 2004, 81, 1260.
Laboratory Management |
Laboratory Equipment / Apparatus
Silver Nitrate  Jay A. Young
The hazards of silver nitrate are discussed.
Young, Jay A. J. Chem. Educ. 2004, 81, 1259.
Laboratory Management |
Laboratory Equipment / Apparatus
Titanium(IV) Oxide  Jay A. Young
The hazards of titanium(IV) oxide are described.
Young, Jay A. J. Chem. Educ. 2004, 81, 1115.
Laboratory Management |
Laboratory Equipment / Apparatus
Lead Dioxide  Jay A. Young
The hazards of lead dioxide are described.
Young, Jay A. J. Chem. Educ. 2004, 81, 1114.
Laboratory Management |
Laboratory Equipment / Apparatus
Yellow Phosphorus  Jay A. Young
The hazards of yellow phosphorus are described.
Young, Jay A. J. Chem. Educ. 2004, 81, 946.
Laboratory Equipment / Apparatus
Red Phosphorus  Jay A. Young
The hazards of red phosphorus are described.
Young, Jay A. J. Chem. Educ. 2004, 81, 945.
Laboratory Equipment / Apparatus
Naphthalene  Jay A. Young
The hazards of naphthalene are discussed.
Young, Jay A. J. Chem. Educ. 2004, 81, 795.
Laboratory Equipment / Apparatus |
Laboratory Management
A Convenient Storage Rack for Graduated Cylinders  Brian Love
The design of a storage rack for graduated cylinders is described. The rack offers the advantage of being able to store large quantities of graduated cylinders in a small space, while at the same time organizing them according to size.
Love, Brian. J. Chem. Educ. 2004, 81, 701.
Laboratory Management |
Laboratory Equipment / Apparatus
Automated Flow-Injection Instrument for Chemiluminescence Detection Using a Low-Cost Photodiode Detector: An Interdisciplinary Project in Chemical Instrumentation, Graphical Programming, Computer Interfacing, and Analytical Chemistry  A. Economou, D. Papargyris, and I. Stratis
This work is concerned with the design, construction, automatic control, and optimization of a flow injection analysis (FIA) instrument with chemiluminescence (CL) detection. The project proceeds in three stages: the construction of the detector, the construction and control of the flow system, and the chemical measurements.
Economou, A.; Papargyris, D.; Stratis, I. J. Chem. Educ. 2004, 81, 406.
Laboratory Computing / Interfacing |
Laboratory Equipment / Apparatus
Questioning an Ultrasonic Lab Setup  Francisco J. Arnáiz
The intermediate referred to as an oxyallyl cation is not a cation but a zwitterion, and the mentioned by-product, CuI2 (crucial to explain the need of excess copper referred to in the text, since in fact CuI is formed) is nonexistent.
Arnáiz, Francisco J. J. Chem. Educ. 2004, 81, 193.
Laboratory Equipment / Apparatus |
Metals |
Microscale Lab
Questioning an Ultrasonic Lab Setup  Francisco J. Arnáiz
The intermediate referred to as an oxyallyl cation is not a cation but a zwitterion, and the mentioned by-product, CuI2 (crucial to explain the need of excess copper referred to in the text, since in fact CuI is formed) is nonexistent.
Arnáiz, Francisco J. J. Chem. Educ. 2004, 81, 193.
Laboratory Equipment / Apparatus |
Metals |
Microscale Lab
Using a Disposable Pipet for Preparing Air-Sensitive Compounds for Melting Point Determinations or Storage  Martial Sanz
An inexpensive disposable Pasteur pipet can be transformed into a capillary tube, which, once correctly coupled with a Quickfit adapter with a side arm by means of a rubber septum, can receive under a dried and inert atmosphere air-sensitive samples from a Schlenk-type vessel.
Sanz, Martial. J. Chem. Educ. 2004, 81, 106.
Laboratory Equipment / Apparatus |
Physical Properties |
Laboratory Management
Low-Voltage Conductivity Device. Editor's Note about Using Conductivity Devices in Nonaqueous Solutions  Ed Vitz and Melissa Kistler
A conductivity demonstration device is described which operates on 12V and yet will illuminate a bulb brightly enough for use in a lecture hall, even when used with solutions of low conductivity.
Vitz, Ed; Kistler, Melissa. J. Chem. Educ. 2004, 81, 63.
Conductivity |
Laboratory Equipment / Apparatus
Including Non-Traditional Instrumentation in Undergraduate Environmental Chemistry Courses  J. David Jenkins, Jessica N. Orvis, C. Jimmy Smith, Citabria Manley, and Jeanette K. Rice
In this work, we report on the successful incorporation of a direct mercury analyzer into the environmental science laboratory for both non-majors and majors.
Jenkins, J. David; Orvis, Jessica N.; Smith, C. Jimmy; Manley, Citabria; Rice, Jeanette K. J. Chem. Educ. 2004, 81, 22.
Laboratory Equipment / Apparatus |
Nonmajor Courses |
Instrumental Methods
Tensile Strength Measurements on Biopolymer Films  Eugene S. Stevens and Mark D. Poliks
Measuring the tensile strength of biopolymer films using a simple student apparatus; results are compared with data obtained from industry-standard equipment.
Stevens, Eugene S.; Poliks, Mark D. J. Chem. Educ. 2003, 80, 810.
Biotechnology |
Carbohydrates |
Industrial Chemistry |
Laboratory Equipment / Apparatus |
Materials Science |
Proteins / Peptides
Improved Hittorf Apparatus  Kan Jinquing
Reply to concerns over suggestions for Hittorf apparatus.
Jinquing, Kan. J. Chem. Educ. 2003, 80, 742.
Electrochemistry |
Laboratory Equipment / Apparatus
Improved Hittorf Apparatus  Morris Bader
Summary of problems with Hittorf apparatus outlined in earlier issue.
Bader, Morris. J. Chem. Educ. 2003, 80, 742.
Electrochemistry |
Laboratory Equipment / Apparatus
Improved Hittorf Apparatus  Morris Bader
Summary of problems with Hittorf apparatus outlined in earlier issue.
Bader, Morris. J. Chem. Educ. 2003, 80, 742.
Electrochemistry |
Laboratory Equipment / Apparatus
Techniques in Organic Chemistry: Miniscale, Standard Taper Microscale, and Williamson Microscale (Jerry R. Mohrig, Christina Noring Hammond, Paul F. Schatz, and Terence C. Morrill)  Richard M. Pagni
Supplementary text organized like most organic chemistry lab manuals, but without the experiments.
Pagni, Richard M. J. Chem. Educ. 2003, 80, 388.
Laboratory Equipment / Apparatus |
Microscale Lab |
Instrumental Methods |
Enrichment / Review Materials
Another Hazard  Marcio C. S. de Mattos and David E. Nicodem
Minimizing risks to distilling ether.
de Mattos, Marcio C. S.; Nicodem, David E. J. Chem. Educ. 2002, 79, 1070.
Laboratory Equipment / Apparatus
Another Hazard  Jean B. Umland
Risks to distilling ether.
Umland, Jean B. J. Chem. Educ. 2002, 79, 1070.
Laboratory Equipment / Apparatus
Color Changes in Indicator Solutions  Addison Ault
Risks to distilling ether.
Ault, Addison. J. Chem. Educ. 2002, 79, 1070.
Laboratory Equipment / Apparatus
Tethering Bottle Caps  Ben Ruekberg
Method to prevent mixing reagent bottle caps.
Ruekberg, Ben. J. Chem. Educ. 2002, 79, 499.
Laboratory Equipment / Apparatus |
Laboratory Management
Weigh This Way  Judith M. Bonicamp
Weighing samples by using the tare function on an electronic balance.
Bonicamp, Judith M. J. Chem. Educ. 2002, 79, 476.
Laboratory Equipment / Apparatus |
Quantitative Analysis
The Influence of Modern NMR Spectroscopy on Undergraduate Organic, Inorganic, and Physical Chemistry at Florida State University  Joseph B. Vaughn, Jr.
Survey of student attitudes toward having state-of-the-art NMR spectra available.
Vaughn, Joseph B., Jr. J. Chem. Educ. 2002, 79, 306.
Laboratory Equipment / Apparatus |
NMR Spectroscopy
An Inexpensive Water Jacket for a Polarimeter Tube  F. A. Kundell and W. A. Adkins
Design and construction of an inexpensive water jacket for a polarimeter tube.
Kundell, F. A.; Adkins, W. A. J. Chem. Educ. 2001, 78, 1516.
Carbohydrates |
Kinetics |
Laboratory Equipment / Apparatus |
Laboratory Management
Applied Electronics: Construction of a Simple Spectrophotometer  Melissa A. Thal and Michael J. Samide
A simple spectrophotometer intended for use as a capstone circuit for an electronics laboratory exercise.
Thal, Melissa A.; Samide, Michael J. J. Chem. Educ. 2001, 78, 1510.
Instrumental Methods |
Laboratory Equipment / Apparatus |
UV-Vis Spectroscopy
The Influence of Modern Instrumentation on the Analytical and General Chemistry Curriculum at Bates College  Thomas J. Wenzel
Incorporation of modern instrumentation into analytical and general chemistry curricula.
Wenzel, Thomas J. J. Chem. Educ. 2001, 78, 1164.
Laboratory Equipment / Apparatus
Teaching the Fundamentals of Pulsed NMR Spectroscopy in an Undergraduate Physical Chemistry Laboratory  Gary A. Lorigan, Robert E. Minto, and Wei Zhang
An undergraduate physical chemistry laboratory experiment that utilizes a commercially available bench-top pulsed NMR spectrometer; students assemble the components of an NMR spectrometer, program a variety of pulse sequences, and collect T1 and T2 relaxation data.
Lorigan, Gary A.; Minto, Robert E.; Zhang, Wei. J. Chem. Educ. 2001, 78, 956.
Kinetics |
NMR Spectroscopy |
Laboratory Equipment / Apparatus
Flood Prevention by Recirculating Condenser Cooling Water  Fraser F. Fleming and Pravin S. Iyer
A self-circulating system that uses convection to cool a reflux condenser.
Fleming, Fraser F.; Iyer, Pravin S. J. Chem. Educ. 2001, 78, 946.
Laboratory Equipment / Apparatus |
Water / Water Chemistry
Build a Simple Polarimeter  Frank E. Stary and Norman Woldow
Details of the construction of a durable, inexpensive portable polarimeter with a self-contained 585-nm light source are given, combining the best features of several polarimeters; may easily be scaled up in size for increased sensitivity.
Stary, Frank E.; Woldow, Norman. J. Chem. Educ. 2001, 78, 644.
Instrumental Methods |
Kinetics |
Laboratory Equipment / Apparatus |
Stereochemistry
Safe and Efficient Flash Chromatography Equipment for the Research/Teaching Lab  Fritiof Pontén and Ulf Ellervik
A new method for performing flash chromatography is presented in which the solvent reservoir is at the side of the column, in a separate bottle, connected with a Teflon tube to an adapter for standard flash chromatography columns.
Pontén, Fritiof; Ellervik, Ulf. J. Chem. Educ. 2001, 78, 363.
Chromatography |
Laboratory Equipment / Apparatus |
Separation Science
Surface Tension Determination through Capillary Rise and Laser Diffraction Patterns  Teresita Munguia and Charles A. Smith
In this physical chemistry experiment the surface tension of several solvents is determined by measuring the height of the capillary rise in a capillary tube; the radius of the tubing is calculated through measurements taken from the diffraction pattern produced when a laser of known wavelength is passed through a short piece of the capillary tubing.
Munguia, Teresita; Smith, Charles A. J. Chem. Educ. 2001, 78, 343.
Laboratory Equipment / Apparatus |
Lasers |
Spectroscopy |
Surface Science
An Alternative to Mercury Thermometers  Alexander Nezlin
This brief laboratory safety note describes a simple and inexpensive way to protect a metallic thermometer probe, thus allowing employment of digital thermometers and or digital temperature controllers in aggressive media.
Nezlin, Alexander. J. Chem. Educ. 2001, 78, 342.
Laboratory Equipment / Apparatus |
Laboratory Management
An Efficient and Inexpensive Apparatus for Hot Filtration  Carlos C. Romão and Hermínio P. Diogo
An efficient apparatus for hot filtration is described. It is constructed from recycled glass laboratory material (Erlenrneyer flask and funnel), modified by simple glass blowing techniques.
Romão, Carlos C.; Diogo, Hermínio P. J. Chem. Educ. 2001, 78, 65.
Crystals / Crystallography |
Laboratory Equipment / Apparatus |
Laboratory Management
A Ten-Dollar Stirring Device for the Microscale Laboratory  Jeffrey John Willemsen
An easy-to-build, inexpensive stirring device, powered by compressed air and assembled from parts that are readily available, is described.
Willemsen, Jeffrey John. J. Chem. Educ. 2000, 77, 1476.
Laboratory Equipment / Apparatus |
Laboratory Management
In Praise of Latex Gloves  Francisco J. Arnáiz
Latex gloves, and in general flexible gloves, are inexpensive ubiquitous items whose utility in chemistry labs goes far beyond their primary mission. Here we mention some typical situations in which latex gloves can aid in overcoming difficulties that might arise in common labs.
Arnáiz, Francisco J. J. Chem. Educ. 2000, 77, 1354.
Laboratory Equipment / Apparatus |
Laboratory Management
Teflon Tape--The Leaky Buret Remedy  Brett C. Boshco and John J. Griffin
As a remedy for buret leaks caused by an improper tip-to-stopcock fit, Teflon tape should be wrapped tightly around the glass tip before its insertion into the stopcock. This tape will fill voids as the glass tip is pushed up while twisting into the stopcock, providing the seal needed where silicone grease failed.
Boshco, Brett C.; Griffin, John J. J. Chem. Educ. 2000, 77, 1342.
Laboratory Equipment / Apparatus |
Laboratory Management
Evaporation Kinetics in Short-Chain Alcohols by Optical Interference  Ian M. Rosbrugh, S. Y. Nishimura, and A. M. Nishimura
The evaporation rates of volatile organic liquids may be determined through the observation of optical interference of spatially coincident light that is reflected from the top (air-liquid) and bottom (liquid-surface) of a liquid drop on a glass surface. As an example of what is possible with this technique, the evaporation for a series of short-chain alcohols and acetone is investigated.
Rosbrugh, Ian M.; Nishimura, S. Y.; Nishimura, Allan M. J. Chem. Educ. 2000, 77, 1047.
Kinetics |
Laboratory Equipment / Apparatus |
Liquids
An Inexpensive Gradient Maker for the Biochemistry Laboratory  William H. Flurkey
A gradient maker for use in the biochemistry laboratory was constructed out of plastic graduated cylinders or other easily obtained plastic items. Assembly of the gradient makers requires little time or expense. Details on construction and operation are given.
Flurkey, Bill. J. Chem. Educ. 2000, 77, 1041.
Chromatography |
Laboratory Equipment / Apparatus |
Proteins / Peptides
Dry-Ice Bath Based on Ethylene Glycol Mixtures  Do W. Lee and Craig M. Jensen
Bath mixtures of ethanol and ethylene glycol in dry ice produce sustainable constant temperatures over the range from -12 to -78 C, is less toxic than previously reported mixtures of ortho- and meta-xylene, does not intractably solidify as will dry ice slurries of xylenes, and is less costly than xylene mixtures.
Lee, Do W.; Jensen, Craig M. J. Chem. Educ. 2000, 77, 629.
Laboratory Equipment / Apparatus |
Solutions / Solvents |
Laboratory Management
Fire, Water, and Soot--A Cautionary Tale  Stanley H. Pine
A fire in an organic chemistry laboratory caused serious damage to a large part of the Chemistry and Biochemistry area. The fire is believed to have been caused by a buildup of flammable vapors that were ignited by a drying oven. Hot weather, poor air circulation, and ductless fume hoods may have contributed to conditions favorable to initiating the fire.
Pine, Stanley H. J. Chem. Educ. 2000, 77, 547.
Laboratory Equipment / Apparatus |
Laboratory Management
An Inexpensive Convenient Press for KBr and CsI Pellets in Infrared Studies  Chris Kalberg and Paul J. Ogren
Directions are provided for the fabrication of an inexpensive IR salt pellet press that may be used easily and quickly by beginning chemistry students.
Kalberg, Chris; Ogren, Paul J. J. Chem. Educ. 2000, 77, 391.
IR Spectroscopy |
Laboratory Equipment / Apparatus
Inexpensive Pipet or Buret Jar and Washer  Henry Brouwer
Instructions are given for constructing a pipet or buret jar and automatic washer using readily available materials from a plumbing supply store.
Brouwer, Henry. J. Chem. Educ. 2000, 77, 254.
Laboratory Equipment / Apparatus |
Laboratory Management
A Simple Hanging Mercury Drop Electrode  Florinel Gabriel Banica
A device producing reproducible hanging mercury drops at the end of a glass capillary is described. Mercury flow through the capillary is controlled by means of a closing needle actuated by an electromagnetic relay. The timing circuit is very simple and consists only of resistors and capacitors.
Banica, Florinel Gabriel. J. Chem. Educ. 2000, 77, 98.
Instrumental Methods |
Electrochemistry |
Laboratory Equipment / Apparatus
Student-Determined Values for the Calculation of Chemical Shifts of Methylene Protons in Different Chemical Environments  Gary W. Breton
A laboratory experiment in which students themselves determine values for the calculation of chemical shifts of methylene protons in a variety of chemical environments. Although these values come from single determinations of representative compounds from several different classes, the alpha-parameter values obtained are in close agreement with literature data.
Breton, Gary W. J. Chem. Educ. 2000, 77, 81.
Laboratory Equipment / Apparatus |
NMR Spectroscopy
An Alternative Procedure for the Glucose Oxidase Assay of Glucose as Applied to the Lactase Activity Assay  T. Corbin Mullis, Jeffery T. Winge, and S. Todd Deal
The glucose oxidase assay of glucose has been modified to eliminate the use of micropipets. The modification involves the use of disposable Pasteur pipets and a specified number of drops of each reagent. This simplified technique gives accurate and reproducible results.
Mullis, T. Corbin; Winge, Jeffery T.; Deal, S. Todd. J. Chem. Educ. 1999, 76, 1711.
Enzymes |
Carbohydrates |
Laboratory Equipment / Apparatus |
Laboratory Management
Inexpensive Variable Pathlength Cells for Discovery-Based Investigation of the Beer-Lambert Law  Mitscele, Jonathan
Glass spacers used to reduce pathlengths.
Mitscele, Jonathan J. Chem. Educ. 1999, 76, 1624.
Solutions / Solvents |
Laboratory Equipment / Apparatus
A Simple Supplementary Offset Device for Data Acquisition Systems  Thomas Kappes and Peter C. Hauser
The device described in this article offers in a simple way the possibility of extending the offset range and can be combined with any data acquisition system. The signal offset is obtained by adding a manually adjustable voltage to the raw signal.
Kappes, Thomas; Hauser, Peter C. J. Chem. Educ. 1999, 76, 1429.
Instrumental Methods |
Laboratory Equipment / Apparatus
The Development of a Microscale Continuous Hot Solvent Extractor  Steve S. Wesolowski, Thomas Mulcahy, Christina M. Zafoni, and Wayne E. Wesolowski
To minimize the waste solvent produced, we have developed a microscale continuous hot solvent extractor that effectively extracts 100-500-mg samples using about 4 mL of solvent.
Wesolowski, Steve S.; Mulcahy, Thomas; Zafoni, Christina M.; Wesolowski, Wayne E. J. Chem. Educ. 1999, 76, 1116.
Microscale Lab |
Laboratory Equipment / Apparatus |
Separation Science
An Apparatus for Temperature Displays  George Papageorgiou and John Xenos
In this article, a new simple and low-cost apparatus is introduced that provides the possibility to display temperature measurements in any lecture hall. The apparatus provides analog displays. Its construction requires only simple and inexpensive materials.
Papageorgiou, George; Xenos, John. J. Chem. Educ. 1999, 76, 1094.
Calorimetry / Thermochemistry |
Laboratory Equipment / Apparatus
A Microscale Vacuum Distillation Apparatus for Simple Separations  Ulf Ellervik and Hans Grundberg
To improve microscale distillation in a basic organic chemistry course, a simple and highly efficient vacuum distillation apparatus was designed.
Ellervik, Ulf; Grundberg, Hans. J. Chem. Educ. 1999, 76, 986.
Microscale Lab |
Laboratory Equipment / Apparatus |
Separation Science
A Practical Guide for the Preparation of Specimens for X-ray Fluorescence and X-ray Diffraction Analysis (by V. E. Buhrke, R. Jenkins, and D. K. Smith)  Reuben Rudman
Although its principal thrust is geared towards the analytical chemist in an X-ray diffraction (XRD) or X-ray fluorescence (XRF) service laboratory, this text will be of use primarily as a reference source in all milieus dealing with undergraduate research projects and advanced laboratory courses in physical and analytical chemistry. It contains dozens of suggestions for preparing randomly oriented small samples of nearly anything.
Rudman, Reuben. J. Chem. Educ. 1999, 76, 762.
Laboratory Equipment / Apparatus |
Laboratory Management
The Laboratory Companion: A Practical Guide to Materials, Equipment, and Technique (by G. S. Coyne)  Elizabeth A. Runquist
This book contains a unique collection of hard-to-obtain, valuable information on the use, maintenance, and calibration of common laboratory equipment. In addition, the book provides guidelines for purchasing common laboratory equipment.
Runquist, Elizabeth A. J. Chem. Educ. 1999, 76, 614.
Laboratory Management |
Laboratory Equipment / Apparatus
Realistic Detection Limits from Confidence Bands  Julia R. Burdge* Douglas L. MacTaggart, and Sherry O. Farwell
Recommendations are made with regard to the preferential use of the regression approach compared to the classical approach, and the calculation and reporting of detection limits within the context of fully specified analytical methods using this approach.
Burdge, Julia R.; MacTaggart, Douglas L.; Farwell, Sherry O. J. Chem. Educ. 1999, 76, 434.
Laboratory Equipment / Apparatus |
Chemometrics |
Learning Theories
Design for a Miniature Portable Fume Hood  Ronald A. Bailey and Samuel C. Wait Jr.
This paper describes the design of a folding bench-top hood that is readily moved and can be stored in a standard laboratory cabinet. In its folded form it takes up little space.
Bailey, Ronald A.; Wait, Samuel C., Jr. J. Chem. Educ. 1999, 76, 228.
Laboratory Equipment / Apparatus |
Laboratory Management
A Lab Safety "Scavenger Hunt"  Terry L. Helser
An active "scavenger hunt" can effectively augment the obligatory lecture on lab safety that students rarely heed or remember when it counts. Each team of students is given a diagram of the room with a list of equipment to find. Winners are rewarded for accurately and completely labeled diagrams.
Helser, Terry L. J. Chem. Educ. 1999, 76, 68.
Nonmajor Courses |
Laboratory Equipment / Apparatus
Practical Origami in the Microscale Organic Lab  Daryl L. Ostercamp
The construction of a small paper boxlet, ideally suited for handling and drying small amounts of crystals, is presented. Flat horizontal "handles" present in the boxlet allow one to record pertinent data.
Ostercamp, Daryl L. J. Chem. Educ. 1998, 75, 1456.
Laboratory Equipment / Apparatus |
Microscale Lab
Using Plastiline in the Laboratory  Francisco J. Arnáiz
This is an invitation for a more widespread use of plastiline (an artist's material that is widely used for sculpture) in chemistry laboratories.
Arn$#225;iz, Francisco J. J. Chem. Educ. 1998, 75, 1418.
Laboratory Equipment / Apparatus |
Laboratory Management
Automatic Titrators in the Analytical and Physical Chemistry Laboratories  Kathryn R. Williams
In 1995 the University of Florida received an NSF-ILI grant to purchase six automatic titrators, which have now been successfully integrated into the analytical and physical chemistry teaching laboratories. After they have mastered fundamental techniques, students in the introductory analytical laboratory gain experience with automated analyses in three experiments: the iodimetric analysis of ascorbic acid, the determination of polymer molecular weight, and the analysis of chloride by ion selective electrode.
Williams, Kathryn R. J. Chem. Educ. 1998, 75, 1133.
Electrochemistry |
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis
An Inexpensive Detector for Gas Chromatography  Allan L. Smith, Edward J. Thorne, and Wolfgang Nadler
We have developed a low-cost (parts cost approximately $70) detector that can be used in a freshman level class to demonstrate the fundamental principles of gas chromatography (GC). The detector box can be used in a modification of experiments available in the literature which do not enable a quantitative method of analysis. We have used it with success in a freshman class of approximately 450 students in an experiment to separate chlorinated hydrocarbons via GC.
Smith, Allan L.; Thorne, Edward J.; Nadler, Wolfgang. J. Chem. Educ. 1998, 75, 1129.
Laboratory Equipment / Apparatus |
Gas Chromatography |
Separation Science
Capillary Electrophoresis in the Analytical and Physical Chemistry Laboratories  Kathryn R. Williams
Availability of capillary electrophoresis (CE) instrumentation allows students to have hands-on experience with this modern separation tool. They gain more than operational knowledge, however. Inherent in the instructional process is an emphasis on the relation of the chemistry of the sample to the fundamental mechanism of electrophoresis and the demonstration of how CE complements other methods for similar measurements.
Williams, Kathryn R. J. Chem. Educ. 1998, 75, 1079.
Separation Science |
Laboratory Equipment / Apparatus
Laboratory Made Electrochemical Sensors for Adsorptive Stripping Voltammetry  Teresa Goscinska
A novel method of adsorptive stripping voltammetry with a medium exchange preconcentration for the analytical detection of ferrocene in a small sample is presented. A laboratory prepared carbon paste electrode or a clay modified carbon paste electrode (referred to as a sensor) is used as a working electrode.
Goscinska, Teresa. J. Chem. Educ. 1998, 75, 1038.
Electrochemistry |
Laboratory Equipment / Apparatus |
Microscale Lab
An Experiment in the Sampling of Solids for Chemical Analysis  Robert D. Guy, Louis Ramaley, and Peter D. Wentzell
An experiment is described that is suitable for demonstrating the principles of sampling uncertainty in the chemical analysis of particulate materials. Although uncertainty due to the sampling of heterogeneous materials is a pervasive problem in the analysis of "real world" samples, there are very few experiments designed to introduce this topic into the undergraduate laboratory.
Guy, Robert D.; Ramaley, Louis; Wentzell, Peter D. J. Chem. Educ. 1998, 75, 1028.
Laboratory Equipment / Apparatus |
Solids
The Thermometer as a Simple Instrument  George F. Atkinson
The liquid-in-glass thermometer is used as a simple example of designing a measurement instrument which requires no previous knowledge of topics like electricity or optics.
Atkinson, George F. J. Chem. Educ. 1998, 75, 849.
Laboratory Equipment / Apparatus |
Instrumental Methods
Teaching Computer Concepts to Undergraduate Chemists  Ronald S. Haines
A curriculum for introducing chemistry students to the use of computer hardware and software in chemistry is described. The aim of the curriculum is to give students confidence when dealing with computers by emphasizing underlying concepts which are common to many computer applications.
Haines, Ronald S. J. Chem. Educ. 1998, 75, 785.
Learning Theories |
Laboratory Equipment / Apparatus
Modified Carbon Electrodes for Microscale Electrochemistry  Enrico Mocellin and Teresa Goscinska
This paper tries to communicate the surface chemistry nature of electrochemistry, while conveying the future possibilities and application of the subject in such a way that the students may gain some insight and venture to explore the modern methodology and its future directions.
Mocellin, Enrico; Goscinska, Teresa. J. Chem. Educ. 1998, 75, 771.
Laboratory Equipment / Apparatus |
Electrochemistry |
Microscale Lab |
Synthesis
Claisen's Flask and Its Evolution  Bruno Lunelli
The current note presents two types of semimicro distilling flask, plus a vapor condenser, all exploiting a centrifugal field, (together with an order-of-magnitude calculation of the field's strength).
Lunelli, Bruno. J. Chem. Educ. 1998, 75, 638.
Laboratory Equipment / Apparatus
A Low-Cost Auto-Stop Hydraulic Press for Making KBr Disc  Ping-Kay Hon
A hydraulic press fitted with an adjustable torque wrench, together with a stand made of iron bars will form an auto-stop hydraulic press for making KBr disc in IR studies. Total material cost is about $100.
Hon, Ping-Kay. J. Chem. Educ. 1998, 75, 629.
Laboratory Equipment / Apparatus |
IR Spectroscopy |
Laboratory Management
Overhead Projector Voltmeter Aids  Michael R. Hall and Rubin Battino
This paper describes two simple inexpensive devices that allow use of an overhead projector voltmeter to accurately read voltages and temperatures in the range 0-30C.
Hall, Michael R.; Battino, Rubin. J. Chem. Educ. 1998, 75, 577.
Laboratory Equipment / Apparatus
Notes on Converting to Microscale  Antonio Herrera and John Almy
Small glassware is used rather than conventional microscale kits. The equipment and four microscale experiments that emphasize microscale techniques are described.
Herrera , Antonio; Almy, John. J. Chem. Educ. 1998, 75, 83.
Laboratory Equipment / Apparatus |
Microscale Lab
Acetone and Ethyl Acetate in Commercial Nail Polish Removers: A Quantitative NMR Experiment Using an Internal Standard  David W. Clarke
The qualitative and quantitative analysis of commercial nail polish removers is performed on a 60 MHz NMR spectrometer. After taking NMR spectra of the polish removers, students can make peak assignments for the known components of acetone and ethyl acetate. Using these spectra, students are also able to identify the unknown alcohol present in the remover as ethanol.
Clarke, David W. J. Chem. Educ. 1997, 74, 1464.
Laboratory Equipment / Apparatus |
NMR Spectroscopy |
Aldehydes / Ketones
Eliminating Mercury Thermometers from the Lab  T. Stephen Everett
Replacing Hg thermometers with cooking thermometers.
Everett, T. Stephen. J. Chem. Educ. 1997, 74, 1204.
Laboratory Equipment / Apparatus
The Floating Siphon - an Effective "Homemade" Device for High Dilution Experiments  Alexander Kolchinski
A simple device, which can be used in place of a syringe pump, has been suggested for high dilution experiments.
Kolchinski, Alexander. J. Chem. Educ. 1997, 74, 1190.
Laboratory Equipment / Apparatus
An Exercise To Illustrate the Importance of Sample Preparation in Chemical Analysis  Jeffrey G. Dunn, David Philips, and Wilhelm van Bronswijk
A brief description of the equipment and methods necessary for sample preparation, but concentrates more on the data obtained by students and the conclusions that may be drawn from such data. This exercise may be used by class instructors when introducing students to the pitfalls in sampling and the power of statistics.
Dunn, Jeffrey G.; Philips, David; van Bronswijk, Wilhelm. J. Chem. Educ. 1997, 74, 1188.
Laboratory Equipment / Apparatus |
Chemometrics
IR Spectroscopy  William C. Hoyt and Jonathan Mitschele
Using a NaCl plate for IR spectroscopy.
Hoyt, William C. and Mitschele, Jonathan. J. Chem. Educ. 1997, 74, 1024.
IR Spectroscopy |
Laboratory Equipment / Apparatus
Low-Cost Constant Temperature Heating Block  Charles G. Shevlin, Ward Coppersmith, Christopher Fish, Stanley Vlock, William Vellema
A simple constant temperature heat block was constructed from readily available materials. The configuration of the heating block can be constructed to meet the needs of any laboratory.
Shevlin, Charles G.; Coppersmith, Ward; Fish, Christopher; Vlock, Stanley; Vellema, William. J. Chem. Educ. 1997, 74, 958.
Instrumental Methods |
Laboratory Equipment / Apparatus
Removing Silicone Grease from Glassware  Thomas H. Lowry
A recent note described the use of 5% aqueous hydrofluoric acid for removing silicone grease residues from round-bottom flasks. A safer and more convenient alternative is a saturated solution of sodium hydroxide in ethanol.
Lowry, Thomas H. J. Chem. Educ. 1997, 74, 841.
Laboratory Equipment / Apparatus |
Solutions / Solvents |
Laboratory Management
An Innovative Design of a Small Reactor  P. A. Thomas
Design of a small-volume glass reactor which affords effective gas bubbling simultaneously with mechanical stirring is described. Innovative modification and incorporation of an ordinary hypodermic glass syringe in the design make the fabrication very simple and inexpensive.
Thomas, P. A. J. Chem. Educ. 1997, 74, 440.
Laboratory Equipment / Apparatus
An Apparatus for Fast Dilution  V. P. Boiko
An apparatus for fast dilution permitting unlimited dilution of the solution in the same vessel is described. This was achieved by using a siphon to remove part of the solution from the dilution vessel.
Boiko, V. P. J. Chem. Educ. 1997, 74, 439.
Laboratory Equipment / Apparatus |
Solutions / Solvents
Chemistry "en Miniature"  Herbert W. Roesky
"Chemistry en Miniature" is a new approach to carrying out chemical experiments. For the demonstration of the experiments we are using a video camera projector system. The demonstration is transmitted via a color- and data projector onto a large screen, so that it is easy for students to follow every step of the reaction sequence.
Roesky, Herbert W. J. Chem. Educ. 1997, 74, 399.
Laboratory Equipment / Apparatus
The Safe and Efficient Evaporation of a Solvent from Solution  Andrew R. Mahon
By inverting an ordinary 200-mL vacuum flask and pulling a steady current of air from the vacuum apparatus through it, any type of small container can be placed under it, allowing the solvent to be evaporated in a steady, mistake-free manner .
Mahon, Andrew R. J. Chem. Educ. 1997, 74, 246.
Solutions / Solvents |
Laboratory Equipment / Apparatus |
Laboratory Management
Polymer Mechanical Properties via a New Laboratory Tensile Tester   T. Carter Gilmer, Matthew Williams,
A laboratory tensile testing device has been developed, which allows quick and inexpensive measurements of tensile properties of polymeric materials in a uni-axial mode. The device is mostly for instructive purposes and is not necessarily precise enough to collect research mechanical property data.
Gilmer, T. Carter; Williams, Matthew. J. Chem. Educ. 1996, 73, 1062.
Physical Properties |
Laboratory Equipment / Apparatus
Development of a Low-Cost Four-Color LED Photometer  Jay R. Hamilton, Jeffrey S. White, Mary B. Nakhleh
This photometer resembles a Spectronic 20 in that it detects absorbance at selected wavelengths of visible light. However, the photometer retains the advantages of a dual-beam system. The cost is reduced by the elimination of all optical components, which are often the most expensive portion of spectrophotometers.
Hamilton, Jay R.; White, Jeffrey S.; Nakhleh, Mary B. J. Chem. Educ. 1996, 73, 1052.
Instrumental Methods |
Laboratory Equipment / Apparatus |
Spectroscopy
A Manageable Measurement Method for Sodium  Mario Branca and Steven Loiselle
The use of sodium in chemical research is hampered by its reactivity in moist air, which leads to difficult handling and measurement methods. We describe a simple method using disposable microcapillary pipettes for small quantity applications.
J. Chem. Educ. 1996, 73, 857.
Laboratory Management |
Laboratory Equipment / Apparatus |
Microscale Lab
On-Line Surfactant Monitoring by Foam Generation  Patrick D. Soran, Everett E. Neal, Barbara Smith, and Ken I. Mullen
The device continuously monitors the concentration of surfactants on-line, in real time, and is particularly suited for process monitoring or process control.
Soran, Patrick D.; Neal, Everett E.; Smith, Barbara; Mullen, Ken I. J. Chem. Educ. 1996, 73, 819.
Metals |
Surface Science |
Laboratory Equipment / Apparatus
An Improved Container for Solutions of Yellow Phosphorous  Stephen W. Wright
This short article suggests the use of the Sure/Pac cylinder system as an alternative to glass stoppered bottles for the storage of solutions of yellow phosphorous in carbon dioxide.
Wright, Stephen W. J. Chem. Educ. 1996, 73, 818.
Laboratory Equipment / Apparatus
Making an Inexpensive Tesla Coil from a Car Coil  Michael R. Hall and Rubin Battino
Directions are given for making an inexpensive tesla coil from a car coil, along with the suggested uses for the tesla coil.
Hall, Michael R.; Battino, Rubin. J. Chem. Educ. 1996, 73, 817.
Laboratory Equipment / Apparatus
Disposable Syringe Used as a Grease Applicator  Saqib Ali and M. Danish
This article describes the use of a disposable syringe as a grease applicator. It is possible to grease ground glasses and quickfit joints directly from the tube but then one tube can be used only by one person.
Ali, Saqib; Danish, M. J. Chem. Educ. 1996, 73, 475.
Laboratory Management |
Laboratory Equipment / Apparatus
Soxhlet Apparatus and Chromatography Columns Combined  D. W. Sullins, T. T. Denton, and E. J. Eisenbraun
Two designs of glass apparatus for use either as Soxhlet apparatus or as chromatography columns are described. One utilizes a quartz barrel which permits UV detection of eluting bands on alumina or silica packing.
Sullins, D. W.; Denton, T. T.; Eisenbraun, E. J. J. Chem. Educ. 1996, 73, 380.
Laboratory Equipment / Apparatus |
Chromatography
A Compact Steam Distillation Apparatus  Imran Ali
A very compact steam distillation apparatus is designed and reported in this paper.
Ali, Imran. J. Chem. Educ. 1996, 73, 285.
Laboratory Equipment / Apparatus |
Separation Science
Luminescence Decay and Flash Photolysis Experiments Using an Inexpensive, Laser-Based Apparatus  Benjamin A. DeGraff and David A. Horner
A low cost, easily assembled apparatus has been developed that allows a number of the most exciting laser-based experiments to be performed for less than eight thousand dollars. Also, presented are a number of experiments which can be done using the apparatus and suggestions for a number of additional ones.
DeGraff, Benjamin A.; Horner, David A. J. Chem. Educ. 1996, 73, 279.
Lasers |
Laboratory Equipment / Apparatus
A Solenoid-Operated Gas or Liquid Saver  Michael N. Quigley
A previous note in this Journal described the installation of a water reservoir that greatly facilitates the unattended operation of atomic absorption, emission, and plasma spectrophotometers. A further refinement is detailed here, that relates to the closure of gas valves supplying plasma spectrophotometers in particular, although chromatographs can be similarly modified.
Quigley, Michael N. J. Chem. Educ. 1996, 73, 194.
Laboratory Equipment / Apparatus |
Spectroscopy |
Laboratory Management
An Easy-to-Build Rotational Viscometer with Digital Readout  Turgay Seckin and Suphi M. Kormaly
Low-cost rotational viscometer with digital readout that was well-suited for measuring viscosity was constructed with two dc motors, a rotor, a measuring cup, and milivolt recorder. This rotational viscometer can be used for quick, unsophisticated tests and comparative measurement.
Seckin, Turgay; Kormaly, Suphi M. J. Chem. Educ. 1996, 73, 193.
Laboratory Equipment / Apparatus |
Physical Properties
A Paper Vernier Scale for Various Laboratory Equipments  B. S. Lark
Fabrication and use of a paper vernier scale for a buret is described in this article. Use of this vernier scale makes the reading of the level lying between the graduation marks up to 0.01 mL and thus increases the efficiency of the use of a buret and other similar stem calibrated instruments.
Lark, B. S. J. Chem. Educ. 1996, 73, 177.
Laboratory Equipment / Apparatus
Inexpensive Exemplars for the Wave Model of Electronic Structure and Light  Ed Vitz, Robert Binning, and James W. Long
The classic wave model can be used to understand the behavior of electrons constrained to the vicinity of a nucleus. In this article inexpensive examples of the wave model are described.
Vitz, Ed; Binning, Robert. J. Chem. Educ. 1996, 73, 171.
Photochemistry |
Lasers |
Laboratory Equipment / Apparatus
A "V" Groove Nebulizer for Flame AAS  Ronald Fietkau and Eric Ahuja
This paper describes a high solids nebulizer with a V-groove design for use with flame AAS.
Fietkau, Roland; Ahuja, Eric. J. Chem. Educ. 1996, 73, 102.
Laboratory Equipment / Apparatus |
Atomic Spectroscopy
Selective and Quantitative Catalytic Hydrogenation: A Safe, Inexpensive Experiment for Large Classes  John A. Landgrebe
A catalytic hydrogenation experiment suitable for large classes.
Landgrebe, John A. J. Chem. Educ. 1995, 72, A220.
Catalysis |
Synthesis |
Laboratory Equipment / Apparatus |
Microscale Lab
Instrumentation and Laboratory Improvement Grants in Chemistry  
Listing of the 1995 awards in chemistry under the Instrumentation and Laboratory Improvement Program (ILI) of the Division of Undergraduate Education (DUE).
J. Chem. Educ. 1995, 72, A214.
Instrumental Methods |
Laboratory Equipment / Apparatus |
Laboratory Management
An Economical Replacement for Nitrogen in Solvent Removal in Microscale Organic Laboratories   Ruekberg, Ben.
A simple way to remove solvents from reaction mixtures that are not readily oxidized.
Ruekberg, Ben. J. Chem. Educ. 1995, 72, A200.
Laboratory Management |
Laboratory Equipment / Apparatus |
Microscale Lab
Dictionary of Named Processes in Chemical Technology (Comyns, Alan E.)  
Title of interest.
J. Chem. Educ. 1995, 72, A109.
Laboratory Equipment / Apparatus |
Laboratory Management
Design of a Simple and Stand-alone RS-232c Interface  Maleki, Norooz; Haghighi, Behzad
Plans for a simple and stand-alone RS-232c interface for digitizing analogue data.
Maleki, Norooz; Haghighi, Behzad J. Chem. Educ. 1995, 72, A78.
Laboratory Equipment / Apparatus |
Laboratory Computing / Interfacing
Laboratory Improvement with Fun  D. Lorenzo and P. Moyna
Supporting round-bottomed glassware with wine corks.
Lorenzo, D.; Moyna, P. J. Chem. Educ. 1995, 72, 1146.
Laboratory Equipment / Apparatus |
Laboratory Management
Construction of a Spatula to Fit One-Dram, Screw-Cap Vials  J. M. Lucas and E. J. Eisenbraun
Construction of a spatula to fit one-dram, screw-cap vials.
Lucas, J. M.; Eisenbraun, E. J. J. Chem. Educ. 1995, 72, 1143.
Laboratory Equipment / Apparatus |
Laboratory Management
Protecting Gas Chromatographic Syringes  Ben Ruekberg
Suggestion for protecting gas chromatographic syringes.
Ruekberg, Ben. J. Chem. Educ. 1995, 72, 1141.
Laboratory Equipment / Apparatus |
Chromatography |
Laboratory Management
A Convenient Way to Generate Hydrogen Chloride: In the Freshman Lab  Francisco J. Arnáiz
A convenient way to generate hydrogen chloride.
Arnáiz, Francisco J. J. Chem. Educ. 1995, 72, 1139.
Laboratory Management |
Laboratory Equipment / Apparatus
More Plates in One Chromatographic Tank  Jamil Anwar
Suggested modifications to chromatographic tanks to accommodate more plates per tank.
Anwar, Jamil. J. Chem. Educ. 1995, 72, 1136.
Chromatography |
Laboratory Equipment / Apparatus |
Laboratory Management
Cooling-Trough Condenser for Sublimation Tubes  E. J. Eisenbraun and J. M. Lucas
Plans for a versatile cooling trough for large, test-tube shaped, sublimation tubes.
Eisenbraun, E. J.; Lucas, J. M. J. Chem. Educ. 1995, 72, 1056.
Laboratory Equipment / Apparatus |
Laboratory Management
Useful Plastic Items Available   Marie Sherman
Items discarded by hospitals that can be used in chemistry laboratories.
Sherman, Marie. J. Chem. Educ. 1995, 72, 1028.
Laboratory Equipment / Apparatus |
Laboratory Management
LIMSport VII. Semiconductor Gas Sensors as GC Detectors and "Breathalyzers"  Ed Vitz and Helen Chan
178. Construction and use of a semiconductor gas sensor/computer interface in which data is collected and analyzed in a spreadsheet program.
Vitz, Ed; Chan, Helen. J. Chem. Educ. 1995, 72, 920.
Laboratory Equipment / Apparatus |
Chromatography |
Laboratory Computing / Interfacing |
Solid State Chemistry |
Gas Chromatography |
Applications of Chemistry
Teflon Tape as a Sample Support for IR Spectroscopy  Keith A. Oberg and Daniel R. Palleros
Replacing IR spectra windows with Teflon tape; includes sample spectra run with NaCl plates and Teflon tape.
Oberg, Keith A.; Palleros, Daniel R. J. Chem. Educ. 1995, 72, 857.
IR Spectroscopy |
Laboratory Equipment / Apparatus
Construction and Testing of a Variable Temperature Potentiometry Cell for Student Use   Lee Kresge, Kenneth E. Hyde, and Donald A. Palmer
Construction, testing, and application of a variable temperature potentiometry cell to determine the Nernst slope over a wide temperature range; sample data and analysis included.
Kresge, Lee; Hyde, Kenneth E.; Palmer, Donald A. J. Chem. Educ. 1995, 72, 756.
Electrochemistry |
Ion Selective Electrodes |
Titration / Volumetric Analysis |
Laboratory Equipment / Apparatus |
Electrolytic / Galvanic Cells / Potentials
A Simple and Inexpensive Device for Slow, Controlled Addition of a Solution to a Reaction Mixture   Peter Osvath
A simple and inexpensive device for slow, controlled addition of a solution to a reaction mixture.
Osvath, Peter. J. Chem. Educ. 1995, 72, 658.
Laboratory Equipment / Apparatus
Rapid IR Sampling Methods for the Organic Chemistry Laboratory Using a Diffuse Reflectance Accessory  Scamehorn, Richard
Obtaining IR data for small solid samples using a diffuse reflectance accessory.
Scamehorn, Richard J. Chem. Educ. 1995, 72, 566.
IR Spectroscopy |
Laboratory Equipment / Apparatus
Refrigeration of HPLC Mobile Phases  Quigley, Michael N.
Suggestion for refrigeration of HPLC mobile phases.
Quigley, Michael N. J. Chem. Educ. 1995, 72, 555.
Chromatography |
Laboratory Management |
Laboratory Equipment / Apparatus |
HPLC
Diode-Array Spectroscopy for Educational Applications  Schafer, Wieland; Klunker, Jurgen
Details of diode-array spectroscopy; includes assembly and use information.
Schafer, Wieland; Klunker, Jurgen J. Chem. Educ. 1995, 72, 537.
Spectroscopy |
Laboratory Equipment / Apparatus
Large-Scale Sublimation and Evaporative-Distillation Using an Improved Apparatus  Eisenbraun, E. J.; Cagle, M. D.; Lucas, J. M.; Denton, T. T.
Apparatus for improving large-scale sublimation and evaporative-distillation.
Eisenbraun, E. J.; Cagle, M. D.; Lucas, J. M.; Denton, T. T. J. Chem. Educ. 1995, 72, 476.
Laboratory Equipment / Apparatus |
Phases / Phase Transitions / Diagrams
A Simple Infrared Cell for Gases  Mabbott, Gary A.
Design of a simple infrared cell for gases (specifically nitrogen oxides).
Mabbott, Gary A. J. Chem. Educ. 1995, 72, 471.
Laboratory Equipment / Apparatus |
IR Spectroscopy |
Gases |
Atmospheric Chemistry
An Apparatus To Serve as a Substitute for Three-Neck Flasks  Eisenbraun, E. J.; Denton, T. T.
Design for an apparatus to serve as a substitute for three-neck flasks.
Eisenbraun, E. J.; Denton, T. T. J. Chem. Educ. 1995, 72, 459.
Laboratory Equipment / Apparatus
A Compromise Method for Dispensing Some Strong Acids for Qualitative Analysis Classes.  Ruekberg, Ben.
Apparatus and procedure for dispensing strong acids to students.
Ruekberg, Ben. J. Chem. Educ. 1995, 72, 450.
Qualitative Analysis |
Laboratory Equipment / Apparatus |
Laboratory Management
Ensuring a Water Supply for Atomic Absorption, Emission and Plasma Spectrophotometers  Quigley, Michael N.; Reid, W. Shaw
Apparatus for ensuring a continuous water supply for atomic absorption, emission and plasma spectrophotometers.
Quigley, Michael N.; Reid, W. Shaw J. Chem. Educ. 1995, 72, 440.
Laboratory Equipment / Apparatus |
Atomic Spectroscopy
Continuous Liquid-Sample Introduction for Bunsen Burner Atomic Emission Spectrometry  Smith, Gregory D.; Sanford, Caryn L.; Jones, Bradley T.
Description of a laboratory-constructed atomic emission spectrometer with modular instrumentation components and a simple Bunsen burner atomizer with continuous sample introduction for lab work or demonstrations; includes sample data.
Smith, Gregory D.; Sanford, Caryn L.; Jones, Bradley T. J. Chem. Educ. 1995, 72, 438.
Atomic Spectroscopy |
Laboratory Equipment / Apparatus
A Transferable Gas Container (TGC): Improving the Balloon Inert Atmosphere Technique  Bohac, Andrej
Apparatus for transferring inert gases using toy balloon and rubber tubing.
Bohac, Andrej J. Chem. Educ. 1995, 72, 263.
Laboratory Equipment / Apparatus |
Gases
A Versatile Support for Laboratory Stirring Motors  Cowan, K. D.; Hall, H.; Eisenbraun, E. J.
Design and construction of a support to eliminate vibrational shifts for laboratory motors.
Cowan, K. D.; Hall, H.; Eisenbraun, E. J. J. Chem. Educ. 1995, 72, 190.
Laboratory Equipment / Apparatus
A Modular Raman Spectroscopy System Using a Helium-Neon Laser That Is Also Suited for Emission Spectrophotometry Experiments  Fitzwater, David A.; Thomasson, Kathryn A.; Glinski, Robert J.
Construction and use of a laser, Raman/emission spectroscopy system.
Fitzwater, David A.; Thomasson, Kathryn A.; Glinski, Robert J. J. Chem. Educ. 1995, 72, 187.
Spectroscopy |
Laboratory Equipment / Apparatus |
Raman Spectroscopy |
Lasers
The Western Washington University Instrument Center: Restructuring Shops and Service Laboratories for Limited Budgets  Wilson, H. William
Examination of restructuring shops and laboratories at Western Washington University to reduce costs and increase efficiency.
Wilson, H. William J. Chem. Educ. 1995, 72, 169.
Laboratory Management |
Laboratory Equipment / Apparatus |
Administrative Issues
A Cheap and Effective Glovebag for the Undergraduate Laboratory  Hartmann, Gregory A.; Gaston, Rick
Instructions for producing inexpensive glovebags.
Hartmann, Gregory A.; Gaston, Rick J. Chem. Educ. 1995, 72, 96.
Laboratory Equipment / Apparatus
A Metal-Encased Dewar Flask  Ritter, David
Instructions for a shock-resistant, homemade metal encased Dewar.
Ritter, David J. Chem. Educ. 1995, 72, 70.
Laboratory Equipment / Apparatus
Dry Ice and a Piece of Used Inner Tube  Ali, Saqib; Danish, M.; Mazhar, M.
Effective method for crushing dry ice.
Ali, Saqib; Danish, M.; Mazhar, M. J. Chem. Educ. 1995, 72, 56.
Laboratory Equipment / Apparatus |
Laboratory Management
Diffuse Reflectance Infrared Spectroscopy  Raymond, Kenneth W.; Corkill, Jeffrey A.
Diffuse reflectance offers a quick and easy-to-use alternative to the preparation of KBr pellets and Nujol mulls for the infrared spectra of solid samples; includes a comparison of spectra from both techniques.
Raymond, Kenneth W.; Corkill, Jeffrey A. J. Chem. Educ. 1994, 71, A204.
IR Spectroscopy |
Laboratory Equipment / Apparatus |
Laboratory Management
A Simple But Accurate Pipet for Use in Microscale Organic Labs  Swanson, Gerald C.
Constructing simple and accurate micropipets from 1 mL serological pipets.
Swanson, Gerald C. J. Chem. Educ. 1994, 71, A202.
Laboratory Equipment / Apparatus
Analysis of Ethylene-Vinyl Acetate Copolymers: A Combined TGA/FTIR Experiment  Williams, Kathryn R.
Enhancement of an earlier procedure by equipping an FTIR with an Attenuated Total Reflectance accessory and by combining the infrared results with Thermogravimetric Analysis data.
Williams, Kathryn R. J. Chem. Educ. 1994, 71, A195.
IR Spectroscopy |
Fourier Transform Techniques |
Gravimetric Analysis |
Thermal Analysis |
Laboratory Equipment / Apparatus
Macrostyle Microscale Equipment  Casanova, Joseph; Coyne, Gary S.
Microscale glassware that is designed to operate like full-scale equipment.
Casanova, Joseph; Coyne, Gary S. J. Chem. Educ. 1994, 71, A148.
Microscale Lab |
Laboratory Equipment / Apparatus |
Laboratory Management
The Many Uses of a Seven-inch Side Arm Test Tube  McDevitt, Eugene J.
Reducing the cost of microglassware kits by substituting a $5 side arm test tube for a variety of operations.
McDevitt, Eugene J. J. Chem. Educ. 1994, 71, A58.
Laboratory Equipment / Apparatus |
Microscale Lab |
Laboratory Management
Direct Collection of Distillation Fractions into Vials: A Method for the Micro/Semi-Micro Scale Laboratory  Jordan, David
An inexpensive and simple system for collection of distillation fractions directly into their storage containers.
Jordan, David J. Chem. Educ. 1994, 71, A5.
Microscale Lab |
Laboratory Equipment / Apparatus |
Separation Science
A Digital pH-mV Meter for Overhead Projection  DuPre, Donald B.; Just, Warren E.
A commercially available and relatively inexpensive pH-mV meter may be readily modified for display on an overhead projector.
DuPre, Donald B.; Just, Warren E. J. Chem. Educ. 1994, 71, 1081.
pH |
Laboratory Equipment / Apparatus
Learning Name Reactions and Name Apparatuses Through Crossword Puzzles  Lee, Albert W. M.; Tse, C. L.
These computer generated crossword puzzles consist of 38 organic name reactions and 13 name apparatuses frequently encountered at the undergraduate level.
Lee, Albert W. M.; Tse, C. L. J. Chem. Educ. 1994, 71, 1071.
Laboratory Equipment / Apparatus |
Reactions
A New, Jacketed Stirrer Bearing/Spacer  Goehring, Keith E.
This bearing/spacer has proven to be very effective in preventing solvent vapors from contacting the grease in the bearing, thus preventing possible contamination of the reaction mixture and/or stirring shaft seizing.
Goehring, Keith E. J. Chem. Educ. 1994, 71, 1000.
Laboratory Equipment / Apparatus
Potentiometric Stripping Analyses: Using a Flexible, Low-cost Computerized Instrument  Chow, C. W. K.; Davey, D. E.; Haskard, M. R.; Mulcahy, D. E.; Yeow, T. C. W.
This paper describes a simple and economic way to construct a computerized potentiometric stripping analysis system for teaching and research purposes.
Chow, C. W. K.; Davey, D. E.; Haskard, M. R.; Mulcahy, D. E.; Yeow, T. C. W. J. Chem. Educ. 1994, 71, 997.
Potentiometry |
Laboratory Equipment / Apparatus |
Laboratory Computing / Interfacing
A Simple-to-Build Thermal-Conductivity GC Detector  Jones, Mark E.
The author describes an inexpensive, easy-to-build thermal-conductivity detector for gas chromatography.
Jones, Mark E. J. Chem. Educ. 1994, 71, 995.
Gas Chromatography |
Laboratory Equipment / Apparatus
Minimal-Waste Solution Dispensers   Williams, Howard P.; Woodruff, H. Frank
Reagent solution waste by students can never be eliminated, but it can be greatly reduced with little cost.
Williams, Howard P.; Woodruff, H. Frank J. Chem. Educ. 1994, 71, 976.
Laboratory Equipment / Apparatus |
Laboratory Management
A Simple Means of Reclaiming Microliter Syringes  Dronsfield, Alan T.; Parker, David A.
Over-enthusiastic pumping of 10-L GC syringes often causes the wire plunger to become bent. Such syringes can often be reclaimed using the following procedure.
Dronsfield, Alan T.; Parker, David A. J. Chem. Educ. 1994, 71, 964.
Laboratory Equipment / Apparatus |
Gas Chromatography
Aspirator Splashing Solved with Two Cent Cup  Garza, Victor L.
With this novel method of containment, no splashing occurs and aspirator effectiveness is not decreased
Garza, Victor L. J. Chem. Educ. 1994, 71, 953.
Laboratory Equipment / Apparatus
A Simple Alternative to Separatory Funnels for Chemical Extractions  Bye, Ragnar
A novel magnetic bar-stirred extraction method using conventional Erlenmeyer flasks.
Bye, Ragnar J. Chem. Educ. 1994, 71, 806.
Laboratory Equipment / Apparatus |
Separation Science
Laboratory Wash Bottle from an Empty Shampoo Bottle  Ali, Saqib; Mazhar, M.
Making a laboratory wash bottle from an empty shampoo bottle.
Ali, Saqib; Mazhar, M. J. Chem. Educ. 1994, 71, 805.
Laboratory Equipment / Apparatus
Inexpensive PVC Round-Bottom Flask Holders  McDevitt, Eugene J.
Using PVC pipe to hold round-bottom flasks.
McDevitt, Eugene J. J. Chem. Educ. 1994, 71, 802.
Laboratory Equipment / Apparatus
Disposable KBr Disc for Infrared Studies  Ali, Saqib; Mazhar, M.
Using wooden blocks to protect and vary the thickness of KBr, IR pellets.
Ali, Saqib; Mazhar, M. J. Chem. Educ. 1994, 71, 799.
IR Spectroscopy |
Laboratory Equipment / Apparatus
An Economical and Efficient Photochemical Box  Arney, B. E., Jr.; Banta, M. C.; Prouty, Patrick
Plans and construction of a UV light box for use in photochemical reactions.
Arney, B. E., Jr.; Banta, M. C.; Prouty, Patrick J. Chem. Educ. 1994, 71, 797.
Photochemistry |
Laboratory Equipment / Apparatus
Modified Hershberg Stirrer  Cagle, M. D.; Denton, T. T.; Eisenbraun, E. J.
Variations on the design and construction of the Hershberg stirrer.
Cagle, M. D.; Denton, T. T.; Eisenbraun, E. J. J. Chem. Educ. 1994, 71, 718.
Laboratory Equipment / Apparatus
Digital Displays of Voltage, Resistance, and Temperature  DuPre, Donald B.; Just, Warren E.
Conversion of a digital multimeter for projection on an overhead screen and employing an accessory for the presentation of temperature measurements.
DuPre, Donald B.; Just, Warren E. J. Chem. Educ. 1994, 71, 691.
Laboratory Equipment / Apparatus
A Simple Ring Oven for Microanalysis  Riyazuddin, P.
Fabrication and manipulation of a simple ring oven for microanalysis.
Riyazuddin, P. J. Chem. Educ. 1994, 71, 606.
Laboratory Equipment / Apparatus |
Microscale Lab |
Quantitative Analysis
Rubber Elasticity: A Simple Method for Measurement of Thermodynamic Properties  Byrne, John P.
A modified triple-beam balance that uses an optical lever to detect small changes in the length of a stretched rubber band.
Byrne, John P. J. Chem. Educ. 1994, 71, 531.
Thermodynamics |
Laboratory Equipment / Apparatus |
Physical Properties
Low-Cost Fermentor  Hopkins, Andrew S.
How to construct a low-cost bioreactor to grow 1-2 L of cells.
Hopkins, Andrew S. J. Chem. Educ. 1994, 71, 529.
Laboratory Equipment / Apparatus |
Biotechnology
High-Sensitivity Gamma Radiation Monitor for Teaching and Environmental Applications  Lyons, R. G.; Crossley, P. C.; Fortune, D.
Design, construction, and calibration of a high-sensitivity gamma radiation monitor.
Lyons, R. G.; Crossley, P. C.; Fortune, D. J. Chem. Educ. 1994, 71, 524.
Nuclear / Radiochemistry |
Laboratory Equipment / Apparatus
Non-Flame Heat on a Budget  Teague, Harold J.
Powering eight sand baths per lab bench to provide non-flame heat.
Teague, Harold J. J. Chem. Educ. 1994, 71, 435.
Laboratory Equipment / Apparatus |
Microscale Lab
Inexpensive PVC Splash Guards  McDevitt, Eugene J.
Placing sections of PVC pipe in the bottom of sinks to reduce splashing.
McDevitt, Eugene J. J. Chem. Educ. 1994, 71, 358.
Laboratory Equipment / Apparatus |
Laboratory Management
Inexpensive Instrumental Analysis: II: Introductory Spectroscopy  Ramaley, Louis; Young, Kathleen; Guy, Robert D.; Stephens, Roger
A simple atomic flame spectrometer and a solution spectrophotometer that are easily constructed yet provide accurate and reliable results.
Ramaley, Louis; Young, Kathleen; Guy, Robert D.; Stephens, Roger J. Chem. Educ. 1994, 71, 353.
Instrumental Methods |
Spectroscopy |
Atomic Properties / Structure |
UV-Vis Spectroscopy |
Laboratory Equipment / Apparatus
A Reaction Chamber for the Thermite Reaction  Foseid, Thomas L.
Reaction chamber for the thermite reaction for purchase.
Foseid, Thomas L. J. Chem. Educ. 1994, 71, 327.
Laboratory Equipment / Apparatus
A Constant-Temperature, Multiport Reaction Vessel  Cagle, M. D.; Denton, T. T.; Firsan, Sharbil J.; Eisenbraun, E. J.
Schematic for apparatus for carrying out a series of reactions at precisely the same temperature.
Cagle, M. D.; Denton, T. T.; Firsan, Sharbil J.; Eisenbraun, E. J. J. Chem. Educ. 1994, 71, 159.
Laboratory Equipment / Apparatus
Modifying Relative Proportions of Chromatographic Mobile Phases  Cruz, Gregorio
Modifying a liquid chromatography solvent strength by changing the relative volumes of the components of an initial mixture.
Cruz, Gregorio J. Chem. Educ. 1994, 71, 90.
Chromatography |
HPLC |
Laboratory Equipment / Apparatus
Heat Transfer Block Conversion for Use of a Bimetal Coil Thermometer  Flechtner, Thomas W.; Ball, David W.
Modified aluminum heating block to accept a bimetal coil pocket thermometer.
Flechtner, Thomas W.; Ball, David W. J. Chem. Educ. 1994, 71, 79.
Laboratory Equipment / Apparatus
Inserting a Wire Through a Cork or Rubber Stopper  Cargille, L. Christine L.
Easy method for inserting a wire through a cork or rubber stopper.
Cargille, L. Christine L. J. Chem. Educ. 1994, 71, 74.
Laboratory Equipment / Apparatus
Prevent the Loss of Volatile Solvents in Rotary Evaporators with a Simple Device  van Leusen, Daan
An extremely simple device, costing less than a dime, can solve the solvent-waste problem.
van Leusen, Daan J. Chem. Educ. 1994, 71, 54.
Laboratory Equipment / Apparatus |
Solutions / Solvents
The stereochemistry of commercial 2,6-dimethylcyclohexanone: An application of capillary gas chromatography   Garner, Charles M.
One example of how capillary gas chromatography can be employed in undergraduate organic laboratories.
Garner, Charles M. J. Chem. Educ. 1993, 70, A310.
Gas Chromatography |
Microscale Lab |
Laboratory Equipment / Apparatus |
Aldehydes / Ketones |
Diastereomers |
Stereochemistry
Synthesis of metal halides   Grube, Karl; Leffler, Amos J.
Procedure for micro preparation of metal halides.
Grube, Karl; Leffler, Amos J. J. Chem. Educ. 1993, 70, A204.
Laboratory Equipment / Apparatus |
Metals |
Synthesis |
Microscale Lab
Converting to a microscale laboratory with improvised equipment   Crouch, R. David; Nelson, Todd D.; Kinter, Chris M.
To avoid the expenses normally involved in converting experiments over to the microscale, these authors suggest some "improvised" microscale equipment.
Crouch, R. David; Nelson, Todd D.; Kinter, Chris M. J. Chem. Educ. 1993, 70, A203.
Microscale Lab |
Laboratory Equipment / Apparatus
A microscale suction filtration apparatus   Winkel, Cleve R.
This apparatus helps avoid some of the troublesome aspects of filtration that occur during the transfer stage.
Winkel, Cleve R. J. Chem. Educ. 1993, 70, A161.
Laboratory Equipment / Apparatus |
Microscale Lab |
Separation Science
Construction of a Micropycnometer for Determination of Density and Specific Gravity of Liquids and Solutions   Singh, Mono M.; Szafran, Zvi; Pike, Ronald M.
A procedure used to drastically minimize volume of liquid for disposal that includes development of other, valuable lab techniques.
Singh, Mono M.; Szafran, Zvi; Pike, Ronald M. J. Chem. Educ. 1993, 70, A36.
Laboratory Equipment / Apparatus
A simple and cost-effective technique for the transfer of air-sensitive solutions  Smith Vosejpka, Laura J.
A technique that is a modification of the double-tipped needle technique for transferring air-sensitive liquids and solutions.
Smith Vosejpka, Laura J. J. Chem. Educ. 1993, 70, 665.
Laboratory Equipment / Apparatus
Wash no more!   Zafran, Bob
Making reagent dispensing more efficient and less messy.
Zafran, Bob J. Chem. Educ. 1993, 70, 595.
Laboratory Equipment / Apparatus
An inexpensive, yet strong, way to assemble aluminum rod lattices  Brisbois, Ronald G.
An inexpensive yet strong way to assemble aluminum rod lattices to help with setting up reactions or apparatus.
Brisbois, Ronald G. J. Chem. Educ. 1993, 70, 506.
Laboratory Equipment / Apparatus
An inexpensive, liquid reagent dispenser  Vitz, Ed; Dietrich, Richard
It is expensive to dispose of liquid reagents, but it may also be expensive to invest in commercial dispensers. These authors offer a $5 solution to the problem.
Vitz, Ed; Dietrich, Richard J. Chem. Educ. 1993, 70, 500.
Laboratory Management |
Laboratory Equipment / Apparatus
Practical adaptor for heating mantles  Marin-Puga, Gustavo; Svoronos, Paris
Since most current undergraduate organic labs use both micro and macro scale experiments, the availability of different size heating mantles become necessary. This article suggests a way around the potential problems, especially among third world countries where heating mantles are expensive.
Marin-Puga, Gustavo; Svoronos, Paris J. Chem. Educ. 1993, 70, 428.
Laboratory Equipment / Apparatus |
Microscale Lab
A combination steam and cold plate  Eisenbraun, E. J.; Lucas, J. M.
An apparatus constructed to serve as a variable-temperature plate for use during magnetically stirred evaporation of solvents, dissolution of solids, and cooling solutions to induce crystallization.
Eisenbraun, E. J.; Lucas, J. M. J. Chem. Educ. 1993, 70, 416.
Laboratory Equipment / Apparatus
Simple and flexible flask supports for weighings  Rothchild, Robert
Simple and flexible round-bottom flask supports can facilitate weighings or additions of reagents to flasks.
Rothchild, Robert J. Chem. Educ. 1993, 70, 409.
Laboratory Equipment / Apparatus
Views of space: Analysis of molecular shapes and volumes by casting the unoccupied space within carcerand CPK molecular models  Eld, C. N., Jr.; Cram, D. J.
Corey-Pauling-Koltun molecular models have greatly helped and influenced chemical research. To help with visualizing concealed space within models, the authors have developed a plaster-case and rubber-mold system. The preparation and utility are described in this article.
Eld, C. N., Jr.; Cram, D. J. J. Chem. Educ. 1993, 70, 349.
Molecular Modeling |
Laboratory Equipment / Apparatus
An experiment in manual multiple headspace extraction for gas chromatography: An undergraduate laboratory experiment using simple equipment  Welch, William C.; Greco, Thomas G.
An experiment developed to give the undergraduate analytical student experience in headspace gas chromatography and gas-liquid extraction in the absence of sophisticated extraction and sample injection equipment.
Welch, William C.; Greco, Thomas G. J. Chem. Educ. 1993, 70, 333.
Laboratory Equipment / Apparatus |
Gas Chromatography |
Quantitative Analysis
Curriculum using the unique capabilities of lasers   Van Hecke, Gerald R.; Karukstis, Kerry K.
Pedagogical value of using lasers in various lessons.
Van Hecke, Gerald R.; Karukstis, Kerry K. J. Chem. Educ. 1993, 70, 323.
Lasers |
Laboratory Equipment / Apparatus
Estimating the corrosion rate of mild steel in sulfuric acid by a hydrogen evolution method  Basman, A. R.; Chorley, G. B.; Adeloju, S. B.
Corrosion prevention is an important concept in chemistry and key in the progress of modern civilization. This paper describes a laboratory activity to aid in the understanding of the concept.
Basman, A. R.; Chorley, G. B.; Adeloju, S. B. J. Chem. Educ. 1993, 70, 258.
Electrochemistry |
Metals |
Laboratory Equipment / Apparatus |
Gases
Microwave Drying of Precipitates for Gravimetric Analysis  Thompson, Robert Q.; Ghadiali, Mufaddal
Microwaves save time and energy in drying precipitates.
Thompson, Robert Q.; Ghadiali, Mufaddal J. Chem. Educ. 1993, 70, 170.
Gravimetric Analysis |
Laboratory Equipment / Apparatus |
Laboratory Management
Easy Filling of a Buret for a Number of Titrations  Ali, Saqib; Mazhar, M.; Mahmood, Khalid
A description of an inexpensive apparatus that could help with numerous titrations.
Ali, Saqib; Mazhar, M.; Mahmood, Khalid J. Chem. Educ. 1993, 70, 169.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis
Air-Free Distillation and Multifraction Sealing Apparatus  Cagle, M. D.; Denton, T. T.; Lucas, J. M.; Eisenbraun, E. J.
An apparatus designed to enable vacuum distillation of organic compounds with rigorous exclusion of air until the distilled material is permanently sealed in glass ampoules.
Cagle, M. D.; Denton, T. T.; Lucas, J. M.; Eisenbraun, E. J. J. Chem. Educ. 1993, 70, 168.
Laboratory Equipment / Apparatus
Disposable Transfer Pipets-A Laboratory Necessity  Lawrence, Stephen S.; Brandt, Tessa L.
Disposable transfer pipets have a number of different uses, several are listed.
Lawrence, Stephen S.; Brandt, Tessa L. J. Chem. Educ. 1993, 70, 61.
Laboratory Equipment / Apparatus |
Laboratory Management
Cutting filter paper for microscale use  Englund, Charles R.
Using a cork borer to cut filter paper for microscale use.
Englund, Charles R. J. Chem. Educ. 1992, 69, A314.
Laboratory Equipment / Apparatus |
Laboratory Management |
Microscale Lab
Microscale filtration  Duarte, Frederick F.; McCoy, Layton L.; Popp, Frank D.
Alternative to Craig tubes or filtered Pasteur pipets.
Duarte, Frederick F.; McCoy, Layton L.; Popp, Frank D. J. Chem. Educ. 1992, 69, A314.
Separation Science |
Microscale Lab |
Laboratory Equipment / Apparatus
A simple and inexpensive gas trap or gas inlet for microscale work  Jacob, Linda A.
A simple and inexpensive device can be constructed from an Eppendorf ultramicropipet instead of a syringe needle.
Jacob, Linda A. J. Chem. Educ. 1992, 69, A313.
Laboratory Equipment / Apparatus |
Microscale Lab
Instrumental analysis courses: Part I. The current experimental practice  Harris, Harold H.; O'Brien, James J.
Survey of what instrumental techniques have been included in instrumental analysis courses from 32 chemistry departments.
Harris, Harold H.; O'Brien, James J. J. Chem. Educ. 1992, 69, A266.
Instrumental Methods |
Laboratory Equipment / Apparatus
Improvements in the ultra-micro boiling-point technique  Rausch, Gerald; Tonnis, John
Applying commercial micropipets to solve problems in using capillary tubes.
Rausch, Gerald; Tonnis, John J. Chem. Educ. 1992, 69, A264.
Microscale Lab |
Laboratory Equipment / Apparatus
An inexpensive parallel interface to a digital pH meter   McMahon, John J.; Braca, Paul R.
The authors have designed an experiment in which the students build their own parallel interface "card" from inexpensive components.
McMahon, John J.; Braca, Paul R. J. Chem. Educ. 1992, 69, A156.
Laboratory Equipment / Apparatus |
pH
Controlling a stepper motor: Using the IBM PC communication port   Chau, F. T.; Tam, K. Y.
To simplify the system for applications involving only one or two stepper motors, the serial communication port of an IBM PC may used instead of the parallel interface card.
Chau, F. T.; Tam, K. Y. J. Chem. Educ. 1992, 69, A154.
Laboratory Equipment / Apparatus
HPLC method development with the photodiode array detector: A laboratory experiment   Remcho, Vincent T.; McNair, Harold M.; Rasmussen, Henrik T.
The experiment described here demonstrates the utility of a Photodiode Array detector (PDA) and serves as an introduction to retention theory in reversed-phase HPLC.
Remcho, Vincent T.; McNair, Harold M.; Rasmussen, Henrik T. J. Chem. Educ. 1992, 69, A117.
HPLC |
Solutions / Solvents |
Laboratory Equipment / Apparatus
Scanning tunneling microscopy of silicon and carbon.  Braun, Robert D.
The author describes some of the advantages and uses of scanning tunneling microscopy (STM) as well as a student laboratory using STM.
Braun, Robert D. J. Chem. Educ. 1992, 69, A90.
Laboratory Equipment / Apparatus |
Laboratory Computing / Interfacing
The microscale organic laboratory: A very simple method of filtration and recrystallization   Laporterie, A.
The following inexpensive system can be used to perform filtration, washing and crystallization without the loss of product in an organic lab.
Laporterie, A. J. Chem. Educ. 1992, 69, A42.
Microscale Lab |
Laboratory Equipment / Apparatus |
Crystals / Crystallography
NMR tube cleaner  Denton, T. T.; Eisenbraun, E.
An inexpensive, rugged, and easily constructed alternative to all-glass, NMR-tube cleaners.
Denton, T. T.; Eisenbraun, E. J. Chem. Educ. 1992, 69, 1036.
NMR Spectroscopy |
Laboratory Equipment / Apparatus |
Laboratory Management
An idea to save time and money with recording IR spectrophotometers  Silverman, L. Phillip; Akee, Rhone; Fitzhugh, Anthony L.
Recommended procedure for avoiding off-scale IR traces with recording IR spectrophotometers.
Silverman, L. Phillip; Akee, Rhone; Fitzhugh, Anthony L. J. Chem. Educ. 1992, 69, 1030.
IR Spectroscopy |
Laboratory Equipment / Apparatus
Buret storage solution  Williams, Howard P.
Design of a durable and safe buret storage rack.
Williams, Howard P. J. Chem. Educ. 1992, 69, 1013.
Laboratory Equipment / Apparatus |
Laboratory Management
Determining the thermal expansion coefficient of gases  Lehmann, Jochen K.
The authors improved the design of the apparatus and extended the experimental task on a recently published experiment for determining the zero point of the absolute temperature scale.
Lehmann, Jochen K. J. Chem. Educ. 1992, 69, 943.
Thermodynamics |
Gases |
Laboratory Equipment / Apparatus
A reaction-solution calorimeter for the undergraduate laboratory  Diogo, H. P.; Minas da Piedade, M. E.; Moura Ramos, J. J.; Simoni, J. A.; Martinho Simoes, J. A.
It is believed that the reaction-solution calorimeter described here is a good compromise between cost and accuracy, and is particularly suited to a physical chemistry laboratory course.
Diogo, H. P.; Minas da Piedade, M. E.; Moura Ramos, J. J.; Simoni, J. A.; Martinho Simoes, J. A. J. Chem. Educ. 1992, 69, 940.
Calorimetry / Thermochemistry |
Laboratory Equipment / Apparatus
An inexpensive flash chromatography apparatus for the teaching/research lab  Deal, S. Todd
The author has developed an alternative flash chromatography apparatus for use in research labs at all levels, as well as the undergraduate teaching lab, that uses materials already available in a typical academic laboratory.
Deal, S. Todd J. Chem. Educ. 1992, 69, 939.
Chromatography |
Laboratory Equipment / Apparatus
Reactions accelerated by microwave radiation in the undergraduate organic laboratory  Bari, Shamsher S.; Bose, Ajay K.; Chaudhary, Ashok G.; Manhas, Maghar S.; Raju, Vegesna S.; Robb, Ernest W.
The authors have found that with the proper choice of reaction solvent, accelerated reactions can be carried out safely with ordinary glassware in commercial microwave ovens.
Bari, Shamsher S.; Bose, Ajay K.; Chaudhary, Ashok G.; Manhas, Maghar S.; Raju, Vegesna S.; Robb, Ernest W. J. Chem. Educ. 1992, 69, 938.
Laboratory Equipment / Apparatus |
Reactions
Inexpensive rubber stoppers for small diameter tubing  McDevitt, Eugene J.
Boring out a regular rubber stopper to accept small diameter tubing.
McDevitt, Eugene J. J. Chem. Educ. 1992, 69, 845.
Laboratory Equipment / Apparatus |
Laboratory Management
Simple, inexpensive apparatus for sample concentration  Bruno, Thomas J.
An alternative to disadvantageous, commercial concentration apparatuses.
Bruno, Thomas J. J. Chem. Educ. 1992, 69, 837.
Laboratory Equipment / Apparatus |
Solutions / Solvents
The Willsttter "nail" and the Schwinger microfilter  Stock, John T.
Description of the Willsttter "nail" device and the Schwinger microfilter
Stock, John T. J. Chem. Educ. 1992, 69, 822.
Laboratory Equipment / Apparatus |
Separation Science
A simple, continuous-flow stirred-tank reactor for the demonstration and investigation of oscillating reactions  Merino, J. M.
Description and use of a simple, continuous-flow stirred-tank reactor for the demonstration and investigation of oscillating reactions.
Merino, J. M. J. Chem. Educ. 1992, 69, 754.
Laboratory Equipment / Apparatus |
Reactions
Filtration of very fine particles from an air-sensitive reaction mixture.  Tessier, Claire A.
A filtration device to separate fine particles from air-sensitive mixtures.
Tessier, Claire A. J. Chem. Educ. 1992, 69, 684.
Separation Science |
Gases |
Laboratory Equipment / Apparatus
A modern vapor pressure apparatus based on the isoteniscope.  Van Hecke, Gerald R.
Equipment used for vapor pressure measurements that eliminates use of a mercury manometer.
Van Hecke, Gerald R. J. Chem. Educ. 1992, 69, 681.
Laboratory Equipment / Apparatus |
Gases |
Liquids
C60 and C70 made simply.  Craig, Norman C.; Gee, Gilbert C.; Johnson, Adam R.
Procedure and apparatus for synthesizing C60 and C70.
Craig, Norman C.; Gee, Gilbert C.; Johnson, Adam R. J. Chem. Educ. 1992, 69, 664.
Laboratory Equipment / Apparatus |
Synthesis |
Alkenes
Simple generation of C60 (Buckminsterfullerene).  Iacoe, David A.; Potter, William T.; Teeters, Dale.
A simple means for the production of fullerene-enhanced graphitic soot using equipment commonly found in most undergraduate chemistry and physics laboratories.
Iacoe, David A.; Potter, William T.; Teeters, Dale. J. Chem. Educ. 1992, 69, 663.
Synthesis |
Laboratory Equipment / Apparatus |
Alkenes
Modelling a thermostated water bath with a spreadsheet  Sundheim, Benson R.
140. Using a computer model and spreadsheet to analyze the role of relevant parameters (heater, cooling coils, stirrer, sensors, and other objects) on a water bath.
Sundheim, Benson R. J. Chem. Educ. 1992, 69, 650.
Laboratory Equipment / Apparatus
A simple modification of a domestic microwave oven for improved temperature control.  Pagnotta, Marco; Nolan, Anna; Kim, Leona
Simple modifications to a domestic microwave oven that allows reasonable temperature control and stability.
Pagnotta, Marco; Nolan, Anna; Kim, Leona J. Chem. Educ. 1992, 69, 599.
Laboratory Equipment / Apparatus
An easily assembled setup for stirring multiple reactions.  Chan, Wing Hong; Cai, Pei Xiang.
A simple and inexpensive setup for stirring more than one flask at a time.
Chan, Wing Hong; Cai, Pei Xiang. J. Chem. Educ. 1992, 69, 598.
Laboratory Equipment / Apparatus
A design for low-temperature filtration of strongly hygroscopic crystals.  Czapkiewicz, J.; Tutaj, B.
A closed system for the low-temperature filtration of strongly hygroscopic crystals.
Czapkiewicz, J.; Tutaj, B. J. Chem. Educ. 1992, 69, 590.
Laboratory Equipment / Apparatus |
Crystals / Crystallography |
Laboratory Management
Low-cost water-bath temperature controller.  Mercer, Gary D.
Construction of a low-cost water-bath temperature controller for a 1- to 4-L water bath.
Mercer, Gary D. J. Chem. Educ. 1992, 69, 568.
Laboratory Equipment / Apparatus
A secure system for student use of IR solution cells.  Levine, Samuel G.
Procedure for alleviating problems with student prepared IR solution cells.
Levine, Samuel G. J. Chem. Educ. 1992, 69, 567.
Laboratory Equipment / Apparatus |
IR Spectroscopy
Calibration of high-pressure pumps.  Quigley, Michael N.
A pump's performance can be assessed and effectively calibrated across any range of flowrates using water and a measuring cylinder of suitable volume.
Quigley, Michael N. J. Chem. Educ. 1992, 69, 550.
Laboratory Equipment / Apparatus |
Laboratory Management
Moisture-sensitive reagents in the student laboratory.  Levine, Samuel G.
Apparatus and method for for dispensing measured quantities of moisture-sensitive reagents in the student laboratory.
Levine, Samuel G. J. Chem. Educ. 1992, 69, 501.
Laboratory Equipment / Apparatus
Unfreezing standard-taper joints  Brown, Thomas; Sund, Eldon H.
A mixture of Micro detergent and Duo Seal pump oil will unfreeze frozen standard-taper joints every time.
Brown, Thomas; Sund, Eldon H. J. Chem. Educ. 1992, 69, 421.
Laboratory Equipment / Apparatus |
Laboratory Management
A simple generator for common gases at atmospheric pressure  Elsworth, John F.
The current high cost of either a Kipps generator for producing hydrogen sulfide in the undergraduate laboratory, or of the bottled gas, led the writer to construct a simple, economical and efficient generator for use in a laboratory fitted with an efficient fume hood.
Elsworth, John F. J. Chem. Educ. 1992, 69, 419.
Gases |
Laboratory Equipment / Apparatus
A simple, inexpensive device for measuring the critical temperature of a high-temperature superconductor  Green, David B.; Douphner, Dijon; Hutchinson, Bennett
This note describes a simple, inexpensive method of measuring the temperature at which the Meissner effect exists in a disk of YBa2Cu3O7.
Green, David B.; Douphner, Dijon; Hutchinson, Bennett J. Chem. Educ. 1992, 69, 343.
Superconductivity |
Physical Properties |
Laboratory Equipment / Apparatus
Refrigerated dropping funnel and reflux condenser  Cagle, M. D.; Denton, T.; Eisenbraun, E. J.
This one-piece apparatus has proved useful in controlling the temperature of a reagent during addition to a refluxing reaction mixture.
Cagle, M. D.; Denton, T.; Eisenbraun, E. J. J. Chem. Educ. 1992, 69, 331.
Laboratory Equipment / Apparatus |
Reactions
Avoiding capillary blockage of AA and AE spectrophotometers  Quigley, Michael N.
Using a piece of filter paper is a preventative measure that saves on equipment.
Quigley, Michael N. J. Chem. Educ. 1992, 69, 324.
Atomic Spectroscopy |
Laboratory Equipment / Apparatus
A convenient method for refurbishing laboratory clamps  Wright, Stephen W.; Teeter, J. Stephen
The authors have found that nonferrous laboratory clamps, particularly the Castalloy clamps, may be easily and safely restored by treatment with citric acid solution.
Wright, Stephen W.; Teeter, J. Stephen J. Chem. Educ. 1992, 69, 322.
Laboratory Management |
Laboratory Equipment / Apparatus
Raman spectroscopy for the undergraduate physical and analytical laboratories  Galloway, Douglas B.; Ciolkowski, Edward L.; Dallinger, Richard F.
The goals of this paper are to describe the assembly of a simple Raman spectrometer that uses a nitrogen laser and other commonly available or easily purchasable components and to discuss the ways that this instrument can be used to enhance the educational experience in undergraduate physical and analytical chemistry laboratories.
Galloway, Douglas B.; Ciolkowski, Edward L.; Dallinger, Richard F. J. Chem. Educ. 1992, 69, 79.
Raman Spectroscopy |
Lasers |
Laboratory Equipment / Apparatus
A gel sample block   Taslimi, Paul M.
The description of a simple device that will eliminate the necessity for the use of microcentrifuge tubes for preparation of most DNA samples.
Taslimi, Paul M. J. Chem. Educ. 1992, 69, 61.
Laboratory Equipment / Apparatus |
Electrophoresis
Integrating research instrumentation with the general chemistry curriculum. Part I: Mass spectrometry  Eichstadt, Karen E.
A three-part exercise entitled "A Glimpse of Mass Spectrometry" was designed for students enrolled in the third quarter of a one-year, nonmajor course that surveyed organic and biological chemistry.
Eichstadt, Karen E. J. Chem. Educ. 1992, 69, 48.
Mass Spectrometry |
Laboratory Equipment / Apparatus |
Nonmajor Courses
A semipreparative gas chromatography collection tube adapter  Lee, Sang-Ho; Hulce, Martin
A semipreparative gas chromatography collection tube adapter.
Lee, Sang-Ho; Hulce, Martin J. Chem. Educ. 1991, 68, A142.
Laboratory Equipment / Apparatus |
Gas Chromatography
Construction of a low-cost solution cell for infrared analysis  Winston, Anthony
Solution techniques for IR analysis may be more practical than KBr pellets.
Winston, Anthony J. Chem. Educ. 1991, 68, A124.
Laboratory Management |
Laboratory Equipment / Apparatus |
IR Spectroscopy
An evaluation of drop counting as a volume measurement   Ealy, James; Pickering, Miles
Drop counting as a volume measurement has gained popularity, especially in high school laboratories. These authors investigate the technique.
Ealy, James; Pickering, Miles J. Chem. Educ. 1991, 68, A120.
Microscale Lab |
Laboratory Equipment / Apparatus |
Quantitative Analysis
A simple sublimation apparatus   Brouwer, Henry
A simple sublimation apparatus for use in organic chemistry.
Brouwer, Henry J. Chem. Educ. 1991, 68, A62.
Laboratory Equipment / Apparatus |
Microscale Lab
Inert atmosphere techniques for the microscale laboratory   Newton, Thomas A.
A system developed to introduce students to working under inert atmosphere.
Newton, Thomas A. J. Chem. Educ. 1991, 68, A60.
Laboratory Equipment / Apparatus |
Instrumental Methods |
Microscale Lab
Acid rain experiment and construction of a simple turbidity meter  Betterton, Eric A.
Construction of a simple turbidity meter in order to furnish more atmospheric chemistry experiments in the freshman and sophomore level chemistry lab.
Betterton, Eric A. J. Chem. Educ. 1991, 68, 254.
Atmospheric Chemistry |
Laboratory Equipment / Apparatus |
Green Chemistry
Rotation direction of magnetic stirrers and stirrer/hot plates for bottom-driven spinning-band distillation columns  Rothchild, Robert
Information regarding stirring direction of magnetic stirrers and stirrer/hot plates for bottom-driven spinning-band distillation columns.
Rothchild, Robert J. Chem. Educ. 1990, 67, A305.
Microscale Lab |
Laboratory Equipment / Apparatus
Fume hood testing and evaluation  Saunders, G. Thomas
Common and correctable hood-system defects and acceptable methodology to check on hood containment.
Saunders, G. Thomas J. Chem. Educ. 1990, 67, A226.
Laboratory Management |
Laboratory Equipment / Apparatus
Robots in the laboratory: Part II. An overview   Strimaitis, Janet R.
Recently progressive laboratory managers have recognized the potential of laboratory robotics to create a strategic advantage for their organizations.
Strimaitis, Janet R. J. Chem. Educ. 1990, 67, A20.
Laboratory Equipment / Apparatus |
Laboratory Management
A convenient and improved technique to reduce substantially the problem of bumping while using a rotary evaporator  Buchkremer, Rudiger; Brinker, Udo H.
A very simple type of laboratory equipment that does not trap the compounds but that performs better than commercially available rotary evaporator traps by keeping as much of the reaction mixture as possible from escaping the flask.
Buchkremer, Rudiger; Brinker, Udo H. J. Chem. Educ. 1990, 67, 1071.
Laboratory Equipment / Apparatus |
Separation Science
Inexpensive alternative to purchasing immersion heaters  Garrett, D. Dewayne; Banta, M. C.
Plans for a $15 immersion heater.
Garrett, D. Dewayne; Banta, M. C. J. Chem. Educ. 1990, 67, 976.
Laboratory Equipment / Apparatus |
Laboratory Management
A suggested improvement for the computer-aided optical melting-point device  Masterov, Michael; Sylvestre, Jude
This addition will allow the original device to analyze several samples overnight without human intervention.
Masterov, Michael; Sylvestre, Jude J. Chem. Educ. 1990, 67, 963.
Laboratory Equipment / Apparatus |
Physical Properties |
Laboratory Management
Filtration of air-sensitive compounds  Ali, Saqib; Mazhar, M.; Zia, Irshad A.
A method for filtration of low-boiling solvents (high vapor pressure) such as diethylether or pentane without nitrogen or helium pressure.
Ali, Saqib; Mazhar, M.; Zia, Irshad A. J. Chem. Educ. 1990, 67, 902.
Laboratory Equipment / Apparatus |
Laboratory Management
A low-cost pipet aid  Hon, Ping-Kay
Converting a plastic desoldering pump into a pipet filler, pump, or adjustable autopipet.
Hon, Ping-Kay J. Chem. Educ. 1990, 67, 896.
Laboratory Equipment / Apparatus
A home-built spectrofluorometer  Hadley, Fred J.; Mahloudji, Ali
Combining two Beckman DU spectrophotometers to produce a modest spectrofluorometer.
Hadley, Fred J.; Mahloudji, Ali J. Chem. Educ. 1990, 67, 806.
Laboratory Equipment / Apparatus |
Fluorescence Spectroscopy |
Instrumental Methods
Simple and inexpensive wire-wrap tool  Williams, Howard P.; Cuccaro, Leslie
A simple and inexpensive tool for making wire-wrapped connections to a fragile, graphite electrode.
Williams, Howard P.; Cuccaro, Leslie J. Chem. Educ. 1990, 67, 788.
Laboratory Equipment / Apparatus
A safety device for unattended distillation  Chan, Kwan-dick; Ng, Wing-yan; Yeung, Chi-hung
A safety device to monitor the flow rate of cooling water for a distillation using a liquid flow sensor.
Chan, Kwan-dick; Ng, Wing-yan; Yeung, Chi-hung J. Chem. Educ. 1990, 67, 718.
Laboratory Equipment / Apparatus |
Separation Science
Apparatus for two-probe conductivity measurements on compressed powders  Wudl, Fred; Bryce, Martin R.
A simple two-probe apparatus used to measure the room-temperature d.c. conductivity of solids in the form of compressed pellets.
Wudl, Fred; Bryce, Martin R. J. Chem. Educ. 1990, 67, 717.
Laboratory Equipment / Apparatus |
Conductivity |
Physical Properties
A simple adjustable timer  Hon, Ping-Kay
A simple and low-cost electromechanical timer with a resolution range of 0.05 to 0.87 s/count.
Hon, Ping-Kay J. Chem. Educ. 1990, 67, 716.
Laboratory Equipment / Apparatus
A reusable apparatus for the convenient determination of the molecular weight of air- or moisture-sensitive compounds  Zoellner, Robert W.
Construction and application of an apparatus for the determination of the apparent molecular weight of air- or moisture sensitive compounds employing Singer's method of isothermal distillation.
Zoellner, Robert W. J. Chem. Educ. 1990, 67, 714.
Laboratory Equipment / Apparatus |
Physical Properties
A sonar detector for gas chromatographs  Yarnitzky, Chaim N.
Construction of a sonar detector that operates on measuring the velocity of sound in the analyzed gas.
Yarnitzky, Chaim N. J. Chem. Educ. 1990, 67, 712.
Laboratory Equipment / Apparatus |
Gas Chromatography
Economical electrophoresis with a controlled-current power supply  Hartman, David R.; Courtney, William H.
Electrophoresis power supply that features a controllable current (0-90 mA, dc), the use of a common 120 V, ac power supply, and a materials cost of approximately $50.
Hartman, David R.; Courtney, William H. J. Chem. Educ. 1990, 67, 703.
Electrophoresis |
Laboratory Equipment / Apparatus |
Separation Science
Device to describe wave polarization  Nicolai, Lidia; Baron, Maximo
A device to show that any type of polarized wave (plane, circular, and elliptical) can be obtained from two coherent planar waves having their vibration planes perpendicular to each other.
Nicolai, Lidia; Baron, Maximo J. Chem. Educ. 1990, 67, 647.
Laboratory Equipment / Apparatus |
Photochemistry
Simple substitutes for halide-windowed gas cells  Brown, Trevor M.; Dronsfield, Alan T.
Using plastic bags and film for expensive gas cells and end windows.
Brown, Trevor M.; Dronsfield, Alan T. J. Chem. Educ. 1990, 67, 618.
IR Spectroscopy |
Gases |
Laboratory Equipment / Apparatus
Organic laboratory experiments: A simplified method for collecting preparative fractions from gas chromatographs  Smith, Sherrel
How short pieces of Teflon tubing may be used for gas chromatograph collection tubes.
Smith, Sherrel J. Chem. Educ. 1990, 67, 615.
Gas Chromatography |
Separation Science |
Laboratory Equipment / Apparatus
A suggested improvement for the fabrication of low-cost manometers  Garrett, D. Dewayne; Banta, M. C.
A simple manometer is modified to improve readability and mechanical stability.
Garrett, D. Dewayne; Banta, M. C. J. Chem. Educ. 1990, 67, 523.
Laboratory Equipment / Apparatus
Simple, inexpensive glass reactors for high-temperature aqueous kinetics experiments  Jeffers, Peter M.
The authors have devised methods to make, fill, and seal gas bulbs that have been subsequently heated to 200 degrees Celcius for kinetics studies of hydrolysis reactions.
Jeffers, Peter M. J. Chem. Educ. 1990, 67, 522.
Reactions |
Laboratory Equipment / Apparatus |
Kinetics
A simple apparatus for stirring solutions contained in submerged, sealed vessels  Grinstead, John H., Jr.; Sullivan, Jack M.
The authors designed an apparatus which can simultaneously stir the contents of several submerged flasks from readily available materials.
Grinstead, John H., Jr.; Sullivan, Jack M. J. Chem. Educ. 1990, 67, 521.
Laboratory Equipment / Apparatus |
Solutions / Solvents
A convenient method for preparing chromatography columns  Wright, Stephen W.; Wright, Ann S.
The authors have found that the usual design of flash chromatography pressure regulators allows them to be used as very convenient aids for the rapid filling of columns for Silica Gel chromatography.
Wright, Stephen W.; Wright, Ann S. J. Chem. Educ. 1990, 67, 517.
Chromatography |
Laboratory Equipment / Apparatus
Recovering silica gel using a Soxlet extractor  Mittelstadt, Friedrich G.; Franco, Cesar V.
In order to keep the cost of the isolation procedures as inexpensive as possible, the Silica Gel used in the process was recovered by means of a Soxlet extractor.
Mittelstadt, Friedrich G.; Franco, Cesar V. J. Chem. Educ. 1990, 67, 511.
Chromatography |
Laboratory Equipment / Apparatus
Experiments with "Calo-pH Meter"   Paris, Michel R.; Aymes, Daniel J.

Paris, Michel R.; Aymes, Daniel J. J. Chem. Educ. 1990, 67, 510.
Laboratory Equipment / Apparatus |
Thermodynamics |
Calorimetry / Thermochemistry
An inexpensive device for collection of samples of water for dissolved oxygen determination without air contact   Favaretto, Lelio
This communication describes a simple and inexpensive device that permits the collection of water samples and fixation of dissolved oxygen by the Winkler method.
Favaretto, Lelio J. Chem. Educ. 1990, 67, 509.
Water / Water Chemistry |
Laboratory Equipment / Apparatus
Development of a new design for multipurpose meter: "Calo-pH Meter"   Paris, Michel R.; Aymes, Daniel J.; Poupon, Rene; Gavasso, Roland
The purpose of this article is to describe the design of a common box that can be turned into a simple voltmeter, a pH meter, or a calorimeter.
Paris, Michel R.; Aymes, Daniel J.; Poupon, Rene; Gavasso, Roland J. Chem. Educ. 1990, 67, 507.
Laboratory Equipment / Apparatus |
Electrochemistry |
pH |
Calorimetry / Thermochemistry
A simple method for drying an NMR spinner air supply  Holden, Michael S.; Ogren, Paul J.; Lainhart, Steven D.
A simple alternative to a commercial dryer is a modified cold trap.
Holden, Michael S.; Ogren, Paul J.; Lainhart, Steven D. J. Chem. Educ. 1990, 67, 445.
NMR Spectroscopy |
Laboratory Equipment / Apparatus
Use of a convenient disposable filter "tip" with a Pasteur filter pipet for microscale laboratory techniques   Rothchild, Robert
The filter "tip" consists of a small wad of cotton packed into a short length of polyethylene tubing, with an inner diameter selected to fit over the tip of the Pasteur pipet.
Rothchild, Robert J. Chem. Educ. 1990, 67, 425.
Microscale Lab |
Laboratory Equipment / Apparatus
Inexpensive low-frequency IR windows using polyethylene bags  Uson, Miguel Angel
The author uses polyethylene sheets in lab for Nujol mulls, and has not found a more compatible material as yet.
Uson, Miguel Angel J. Chem. Educ. 1990, 67, 412.
IR Spectroscopy |
Laboratory Equipment / Apparatus
An inexpensive device for the measurements of particle size distribution  Dalas, Evangelos; Koutsoukos, Petros G.
This simple low cost device is suitable for obtaining a good idea of the particle size distribution of a powder or a crystalline preparation.
Dalas, Evangelos; Koutsoukos, Petros G. J. Chem. Educ. 1990, 67, 356.
Laboratory Equipment / Apparatus |
Crystals / Crystallography |
Colloids
A homemade stirring bar for magnetic stirrers  Li, Xiaorong; Chang, James C.
Inexpensive stirring bars can be made by sealing iron wire into pieces of glass tubing.
Li, Xiaorong; Chang, James C. J. Chem. Educ. 1990, 67, 346.
Laboratory Equipment / Apparatus |
Magnetic Properties
An inexpensive alternative to commercial variable transformers   Ogle, Craig A.; Barnes, Craig E.
An inexpensive suitable alternative to a commercial variable transformer is described.
Ogle, Craig A.; Barnes, Craig E. J. Chem. Educ. 1990, 67, 240.
Laboratory Equipment / Apparatus
A modular apparatus for demonstrating gas chromatography using serial coupling of a thermal conductivity and flame ionizaton detector  Wiederholt, Erwin; Fahrney, Volker; Behrens, Dorothea
The authors constructed a simple gas chromatograph for demonstrating the separation of gas mixtures at room temperature; therefore, heating or thermostating of the column is unnecessary.
Wiederholt, Erwin; Fahrney, Volker; Behrens, Dorothea J. Chem. Educ. 1990, 67, 181.
Gas Chromatography |
Separation Science |
Laboratory Equipment / Apparatus
A simple and economical 1000 Hz signal generator  Graham, Douglas A.; Mammano, N. J.
A circuit tailored to the author's requirements of fixed frequency and very low harmonic content has been devised and used successfully in their student laboratory.
Graham, Douglas A.; Mammano, N. J. J. Chem. Educ. 1990, 67, 164.
Electrochemistry |
Laboratory Equipment / Apparatus
A simple apparatus to demonstrate differing gas diffusion rates (Graham's law)  Keller, Philip C.
The apparatus described in this note dramatically demonstrates relative diffusion rate effects for common gases like methane and carbon dioxide.
Keller, Philip C. J. Chem. Educ. 1990, 67, 160.
Gases |
Laboratory Equipment / Apparatus |
Separation Science
Synthesis-laboratory fumehoods: Easy, reliable performance evaluation and importance of sash design  Adams, John B., Jr.
Performance evaluation of laboratory fume hoods.
Adams, John B., Jr. J. Chem. Educ. 1989, 66, A289.
Laboratory Equipment / Apparatus |
Laboratory Management
Computers and balances   Brubaker, George R.; Alber, Larry L.
As electronic balances replace mechanical balances in teaching institutions, balance instruction must change from applied classical mechanics to principles of calibration.
Brubaker, George R.; Alber, Larry L. J. Chem. Educ. 1989, 66, A116.
Laboratory Equipment / Apparatus
Robots in the laboratory- An overview   Strimatis, Janet R.
Automation permits laboratories to maintain high-quality results while increasing productivity and creating more challenging work for technical personnel.
Strimatis, Janet R. J. Chem. Educ. 1989, 66, A8.
Laboratory Equipment / Apparatus |
Laboratory Management
An easy model for teaching mass / charge in mass spectrometry  de Souza, Nelson Angelo; Bravo, Ruiess Van Fossen
A model for the demonstration of ion deflection by the action of a magnet that is occurring inside of a tube of a mass spectrometer.
de Souza, Nelson Angelo; Bravo, Ruiess Van Fossen J. Chem. Educ. 1989, 66, 1039.
Spectroscopy |
Laboratory Equipment / Apparatus
An inexpensive Schoninger flask  Sowa, John R.
Design and application of an inexpensive Schoninger flask.
Sowa, John R. J. Chem. Educ. 1989, 66, 974.
Laboratory Equipment / Apparatus |
Qualitative Analysis
Dropper hangers that can be easily constructed by students  Singh, Saranjit; Singh, Amarjit
Dropper hangers that can be easily constructed by students.
Singh, Saranjit; Singh, Amarjit J. Chem. Educ. 1989, 66, 967.
Laboratory Equipment / Apparatus
Polyethylene film used as windows in infrared analysis of solid, liquid, or gaseous samples  Andrade, Wilson
Using polyethylene film as windows in the infrared analysis of solid, liquid, or gaseous samples.
Andrade, Wilson J. Chem. Educ. 1989, 66, 865.
IR Spectroscopy |
Laboratory Equipment / Apparatus
An offset device for interfacing pen recorders to meters  Davey, David E.; Hall, Robin D.; Mulcahy, Dennis E.; O'Connell, Gregory R.
An external offset device for interfacing strip-chart pen recorders to meters.
Davey, David E.; Hall, Robin D.; Mulcahy, Dennis E.; O'Connell, Gregory R. J. Chem. Educ. 1989, 66, 784.
Laboratory Equipment / Apparatus
A novel drying/storage rack for volumetric glassware  Williams, Howard P.; Graves, Felicia B.
A drying / storage rack made from wooden dowel rods and plywood.
Williams, Howard P.; Graves, Felicia B. J. Chem. Educ. 1989, 66, 771.
Laboratory Management |
Laboratory Equipment / Apparatus
Tilted TOPS: Inclined plane projection  Alyea, Hubert N.
Device to support various containers on an overhead projector so gas-generating reactions may be clearly observed.
Alyea, Hubert N. J. Chem. Educ. 1989, 66, 765.
Laboratory Equipment / Apparatus
A clinical digital thermometer for calorimetry  Hon, Ping-Kay
Modifying an inexpensive clinical thermometer for making thermochemical measurements.
Hon, Ping-Kay J. Chem. Educ. 1989, 66, 695.
Calorimetry / Thermochemistry |
Laboratory Equipment / Apparatus
Better vacuum filtration with bicycle tube  Ali, Saqib
Using a bicycle tube to improve vacuum filtration.
Ali, Saqib J. Chem. Educ. 1989, 66, 693.
Laboratory Management |
Laboratory Equipment / Apparatus
An inexpensive sample holder for storage and introduction of air-sensitive organometallic compounds into a mass spectrometer with inert-atmosphere blanketing  Messerle, Louis; Mallis, Larry M.; Hatch, Peter J.
A simple sample holder that provides a rigorous inert gas blanketing of air-sensitive samples without the need for elaborate inert atmosphere enclosures on the spectrometer inlet.
Messerle, Louis; Mallis, Larry M.; Hatch, Peter J. J. Chem. Educ. 1989, 66, 618.
Laboratory Equipment / Apparatus |
Organometallics |
Mass Spectrometry
Infrared spectroscopy: A serviceable KBr press using disposable "blotting paper" pellet holders designed for student use  Gerry, Henry E.; Craig, Rhoda E. R.
Design of a heavy duty KBr press that can be effectively operated at high temperatures and humidity.
Gerry, Henry E.; Craig, Rhoda E. R. J. Chem. Educ. 1989, 66, 616.
IR Spectroscopy |
Laboratory Equipment / Apparatus
Low-cost, low-tech spectrophotometer flow cell apparatus  Brady, John F.
Design for a low-cost, low-tech spectrophotometer flow cell apparatus.
Brady, John F. J. Chem. Educ. 1989, 66, 604.
Spectroscopy |
Laboratory Equipment / Apparatus
Calibration of air displacement pipets  Ferroni, Edward L.; Letang, Katherine M.
An experiment regarding the calibration of air displacement pipets.
Ferroni, Edward L.; Letang, Katherine M. J. Chem. Educ. 1989, 66, 596.
Calibration |
Laboratory Equipment / Apparatus
An inexpensive pocket reflectometer for semiquantitative spot test analyses  Diemann, Ekkehard
A pocket-sized, battery-operated, and inexpensive reflectometer by which the sensitivity and accuracy of strip test analyses may be increased considerably.
Diemann, Ekkehard J. Chem. Educ. 1989, 66, 595.
Laboratory Equipment / Apparatus |
Quantitative Analysis
A versatile compact reference electrode  Kusuda, Kousuke
Construction of a compact saturated calomel electrode.
Kusuda, Kousuke J. Chem. Educ. 1989, 66, 531.
Laboratory Equipment / Apparatus |
Electrochemistry
The catalytic hydrogenation of methyl oleate by in situ hydrogen generation  Plummer, Ben
Modification of the catalytic hydrogenation of methyl oleate into methyl stearate.
Plummer, Ben J. Chem. Educ. 1989, 66, 518.
Catalysis |
Alkenes |
Laboratory Equipment / Apparatus
Another View of the Visible Spectrum  Hanrahan, E.S.
Chalk can be used with a Spectronic 20 to view the visible spectrum.
Hanrahan, E.S. J. Chem. Educ. 1989, 66, 359.
Spectroscopy |
Laboratory Equipment / Apparatus
Shine some light on entropy of mixing  Brady, K. T.
The apparatus described is relatively easy to construct and is quite useful in providing a visual demonstration of the concept of entropy of mixing and diffusion.
Brady, K. T. J. Chem. Educ. 1989, 66, 339.
Thermodynamics |
Laboratory Equipment / Apparatus
Using a Dumas bulb to determine the molecular weight of a volatile liquid   Kawa, Christopher J.
The use of an aspirator improves the filling and emptying process of a Dumas bulb.
Kawa, Christopher J. J. Chem. Educ. 1989, 66, 336.
Laboratory Equipment / Apparatus |
Laboratory Management |
Liquids
A simple explanation of the salt water oscillator  Noyes, Richard M.
Yoshikawa et al. have described a simple device that undergoes repeated oscillations and that can also illustrate some of the principles essential to the oscillators driven by chemical reactions.
Noyes, Richard M. J. Chem. Educ. 1989, 66, 207.
Laboratory Equipment / Apparatus |
Thermodynamics |
Equilibrium
Amusement with a salt-water oscillator  Yoshikawa, Kenichi; Nakata, Satoshi; Yamanaka, Masahiro; Waki, Takeshi
Rhythmic oscillations of water flow are generated when a vertically oriented hypodermic syringe, with the plunger removed, is filled with salt water and partially submerged in a beaker of pure water.
Yoshikawa, Kenichi; Nakata, Satoshi; Yamanaka, Masahiro; Waki, Takeshi J. Chem. Educ. 1989, 66, 205.
Thermodynamics |
Equilibrium |
Laboratory Equipment / Apparatus
A pressure regulator for vacuum distillation  Sommer, Toby J.
The authors have modified the basic Newman manostat.
Sommer, Toby J. J. Chem. Educ. 1989, 66, 181.
Separation Science |
Laboratory Equipment / Apparatus
A simple apparatus for maintaining low temperature  Ansari, M. Shahid; Saleem, M.
The apparatus has provided fairly constant temperatures in the range of 265 - 140 K.
Ansari, M. Shahid; Saleem, M. J. Chem. Educ. 1989, 66, 180.
Physical Properties |
Laboratory Equipment / Apparatus
Inexpensive PVC infrared cell holder  McDevitt, Eugene J.
Inexpensive PVC infrared cell holder.
McDevitt, Eugene J. J. Chem. Educ. 1989, 66, 177.
Laboratory Equipment / Apparatus
Zero-cost polystyrene film for IR spectroscopy  Fain, D.
The transparency section of many envelopes used for correspondence consists of a polystyrene film suitable for IR spectroscopy.
Fain, D. J. Chem. Educ. 1989, 66, 171.
IR Spectroscopy |
Laboratory Equipment / Apparatus
An inexpensive and easily constructed device for quantitative conductivity experiments   Rettich, Timothy R.; Battino, Rubin
The low cost and easily replaced electrodes make this system practical for use in a general chemistry lab, while its accuracy and wide applicability permit its use in physical or quantitative chemistry experiments.
Rettich, Timothy R.; Battino, Rubin J. Chem. Educ. 1989, 66, 168.
Quantitative Analysis |
Conductivity |
Laboratory Equipment / Apparatus
Recycling polyester tennis ball containers  Greenberg, Fred H.
Abandoned polyester tennis ball containers that accumulate on campus tennis courts may be used in the undergraduate laboratory as dispensing or storage receptacles for a variety of items.
Greenberg, Fred H. J. Chem. Educ. 1989, 66, 167.
Laboratory Equipment / Apparatus
Robust micro-lab sand baths  Ruekberg, Ben
The Comet Individual Egg Poacher can be used instead of crystallizing dishes which break easily in a sand bath.
Ruekberg, Ben J. Chem. Educ. 1989, 66, 89.
Microscale Lab |
Laboratory Equipment / Apparatus
A microscale immersion well for photochemical reactions  Penn, John H.; Orr, Richard D.
In this document, the authors report the development of a microscale photochemical immersion well that incorporates all of the traditional advantages of microscale glassware, as well as offers significant developments for the pedagogy of organic photochemsitry.
Penn, John H.; Orr, Richard D. J. Chem. Educ. 1989, 66, 86.
Photochemistry |
Laboratory Equipment / Apparatus |
Microscale Lab
Miniware for galvanic cell experiments  Craig, Norman C.; Ackermann, Martin N.; Renfrow, William B.
The authors use a simple miniware design of a galvanic cell that is less expensive and time consuming.
Craig, Norman C.; Ackermann, Martin N.; Renfrow, William B. J. Chem. Educ. 1989, 66, 85.
Laboratory Equipment / Apparatus |
Electrolytic / Galvanic Cells / Potentials
The use of solid aluminum heat transfer devices in organic chemistry laboratory instruction and research  Lodwig, Siegfried, N.
The aluminum plate is cheap, effective, clean, and pleasing to the eye, as well as having applications in synthetic work.
Lodwig, Siegfried, N. J. Chem. Educ. 1989, 66, 77.
Laboratory Equipment / Apparatus |
Microscale Lab
An inexpensive controller for the organic chemistry laboratory  Kirkpatrick, Neil; Bayless, Philip; Conklin, Alfred R., Jr.
An inexpensive controller for the organic chemistry laboratory.
Kirkpatrick, Neil; Bayless, Philip; Conklin, Alfred R., Jr. J. Chem. Educ. 1988, 65, 1110.
Laboratory Equipment / Apparatus
Preparation of glass columns for visual demonstration of reversed-phase liquid chromatography  Sander, Lane C.
Basic principles of reverse-phase liquid chromatography can be easily demonstrated by use of transparent chromatographic columns and colored solutes.
Sander, Lane C. J. Chem. Educ. 1988, 65, 373.
Laboratory Equipment / Apparatus |
Chromatography
Laboratory HVAC systems: A troika  Walls, Earl L.
Laboratory workers are almost totally ignorant of what their HVAC systems are all about and what they can expect from them.
Walls, Earl L. J. Chem. Educ. 1987, 64, A314.
Laboratory Equipment / Apparatus
Upgrading laboratory fume hoods  Saunders, G. Thomas
Overview of the design, location, use, and maintenance of fume hoods.
Saunders, G. Thomas J. Chem. Educ. 1987, 64, A272.
Laboratory Equipment / Apparatus |
Laboratory Management
The History and Preservation of Chemical Instrumentation (Stock, John T.; Orna, Mary Virginia)  Kauffman, George B.
18 papers presented on the title subject presented at the 190th meeting of the American Chemical Society in Chicago in September of 1985.
Kauffman, George B. J. Chem. Educ. 1987, 64, A27.
Instrumental Methods |
Laboratory Equipment / Apparatus
Oven drying of volumetric glassware  Burfield, David R.; Hefter, Glenn
Quantifies the effect of heat treatment on the capacity of volumetric glassware.
Burfield, David R.; Hefter, Glenn J. Chem. Educ. 1987, 64, 1054.
Laboratory Equipment / Apparatus |
Laboratory Management
Laboratory applications of the vortex tube  Bruno, Thomas J.
A brief explanation of the function of the vortex tube and some heating and cooling applications for the chemistry laboratory.
Bruno, Thomas J. J. Chem. Educ. 1987, 64, 987.
Laboratory Equipment / Apparatus |
Thermodynamics
Inexpensive low-frequency IR windows using Tupperware seals and polyethylene coffee can lids  Dew, Vinita C.
Using disks cut from coffee can lids and Tupperware tumbler seals as low-frequency IR windows.
Dew, Vinita C. J. Chem. Educ. 1987, 64, 975.
IR Spectroscopy |
Laboratory Equipment / Apparatus |
Instrumental Methods
Versatile and inexpensive screw-cap vessels for medium pressure reactions and processes run under an inert atmosphere  Begtrup, Mikael
For small scale reactions at medium pressure inexpensive and ready-to-make screw-cap closed reaction vessels are much easier to handle than autoclaves or sealed glass tubes.
Begtrup, Mikael J. Chem. Educ. 1987, 64, 974.
Laboratory Equipment / Apparatus
A continuous ether/water extractor  Choney, J. H.; Adkins, M. W.; Eisenbraun, E. J.
Design for a continuous ether/water extractor.
Choney, J. H.; Adkins, M. W.; Eisenbraun, E. J. J. Chem. Educ. 1987, 64, 970.
Ethers |
Laboratory Equipment / Apparatus |
Separation Science
Difficult repairs in glassware made feasible via an inexpensive (no cost) glass lathe  Stransky, Carl; Estler, Ron
Adapting a rotary evaporator as a glass lathe.
Stransky, Carl; Estler, Ron J. Chem. Educ. 1987, 64, 967.
Laboratory Equipment / Apparatus |
Laboratory Management
A free plastic spot plate for overhead demonstration  Marsh, Carol Goodgame
The nearest hospital or clinical laboratory is a potential source for many disposable items that can be useful to chemistry teachers.
Marsh, Carol Goodgame J. Chem. Educ. 1987, 64, 964.
Laboratory Equipment / Apparatus
A new microcell technique for NMR analysis  Yu, Sophia J.
Eliminating expensive microcells and replacing them with disposable units.
Yu, Sophia J. J. Chem. Educ. 1987, 64, 812.
NMR Spectroscopy |
Laboratory Equipment / Apparatus |
Instrumental Methods
A low-cost laboratory experiment using a nephelo-turbidity meter  Das, Ishwar; Das, S. S.; Pushkarna, Anal
Principle of the nephelo-turbidity meter, description of the apparatus, and application to the kinetic study of the decomposition of sodium thiosulfate by mineral acid.
Das, Ishwar; Das, S. S.; Pushkarna, Anal J. Chem. Educ. 1987, 64, 729.
Laboratory Equipment / Apparatus |
Kinetics
A modified adapter for liquid transfer  Bunce, Richard A.; Adkins, M. Wayne
A Pyrex and Teflon apparatus for liquid transfer using an aspirator vacuum.
Bunce, Richard A.; Adkins, M. Wayne J. Chem. Educ. 1987, 64, 728.
Laboratory Equipment / Apparatus
A controller of level of liquids  Alzabet, H. R.; Barbero, J. A.
A device that is capable of controlling liquid level and can be used with any conducting liquid.
Alzabet, H. R.; Barbero, J. A. J. Chem. Educ. 1987, 64, 727.
Laboratory Equipment / Apparatus
Rendering stoppers almost uncontaminatable  Ruekberg, Benjamin P.
Preventing contamination of flat top and penny-head stoppers.
Ruekberg, Benjamin P. J. Chem. Educ. 1987, 64, 724.
Laboratory Equipment / Apparatus |
Laboratory Management
A simple, low-cost programmer for a temperature controller  Alzabet, H. R.; Barbero, J. A.
Modifying a proportional temperature controller to produce a programmable instrument.
Alzabet, H. R.; Barbero, J. A. J. Chem. Educ. 1987, 64, 380.
Laboratory Equipment / Apparatus
A simple apparatus for measuring dynamic surface tension  Srisankar, E. V.; Shah, J. P.; Narayan, K. S.
Design, construction, and use of a simple device to measure the rate of surface tension lowering or dynamic surface tension.
Srisankar, E. V.; Shah, J. P.; Narayan, K. S. J. Chem. Educ. 1987, 64, 378.
Surface Science |
Laboratory Equipment / Apparatus
A simple device for the preparation of feed gas air mixtures of very low gas concentrations  Ramaswamy, V.
Device to overcome the need to use sophisticated controllers to regulate the flow of gas from high pressure cylinders when delivering ppm concentrations.
Ramaswamy, V. J. Chem. Educ. 1987, 64, 375.
Laboratory Equipment / Apparatus |
Gases
Laboratory steam distillation using electrically generated superheated steam  Lane, R. K.; Provence, P. D.; Adkins, M. W.; Eisenbraun, E. J.
Design and use of a superheated steam generator.
Lane, R. K.; Provence, P. D.; Adkins, M. W.; Eisenbraun, E. J. J. Chem. Educ. 1987, 64, 373.
Laboratory Equipment / Apparatus |
Separation Science
A selective electroantennography cell for testing the activity of pheromones  Rozas, Roberto; Perez, Dagor
Design, construction, and use of a elective electroantennography cell for testing the activity of pheromones.
Rozas, Roberto; Perez, Dagor J. Chem. Educ. 1987, 64, 356.
Laboratory Equipment / Apparatus |
Natural Products
Consider safety as an active process  Mehlhaff, L. C.; Berry, Keith O.
Safety considerations for physical facilities, laboratory equipment, experiments, and the operation of the laboratory.
Mehlhaff, L. C.; Berry, Keith O. J. Chem. Educ. 1987, 64, 346.
Laboratory Management |
Laboratory Equipment / Apparatus
An apparatus for sample degassing and sealing  Nicodem, David E.; Marchiori, Roberto
Device that allows the preparation and sealing of low-cost test tubes by inexperienced students.
Nicodem, David E.; Marchiori, Roberto J. Chem. Educ. 1987, 64, 282.
Laboratory Equipment / Apparatus |
Laboratory Management |
Photochemistry
Method for rapidly preparing sealed ampules containing air sensitive materials  Walker, Charles W., Jr.; Wade, William L., Jr.
Soft glass and metal adapter for rapidly preparing sealed ampules containing air sensitive materials.
Walker, Charles W., Jr.; Wade, William L., Jr. J. Chem. Educ. 1987, 64, 278.
Laboratory Equipment / Apparatus |
Laboratory Management
An infrared salt plate cleaning device  Hiegel, Gene A.
A simple device for holding a salt plate while rinsing it with solvent can be made from a small funnel and a bottle.
Hiegel, Gene A. J. Chem. Educ. 1987, 64, 261.
IR Spectroscopy |
Laboratory Management |
Laboratory Equipment / Apparatus
Bargain electrophoresis  Madiera, Vitor M. C.; Pires, Euclides M. V.
A report on building a good grade electrophoresis setup that costs only about $4 or $5.
Madiera, Vitor M. C.; Pires, Euclides M. V. J. Chem. Educ. 1986, 63, 1109.
Laboratory Equipment / Apparatus |
Laboratory Management
Efficient distillation in the microscale laboratory  Lawler, Ronald G.; Parker, Kathlyn A.
Simple distillation of a small quantity of liquid reaction product is a technique without strong precedent; the authors describe their solution to this problem.
Lawler, Ronald G.; Parker, Kathlyn A. J. Chem. Educ. 1986, 63, 1012.
Microscale Lab |
Laboratory Equipment / Apparatus
An inexpensive pressure filter for the organic chemistry laboratory  Mowery, Dwight F.
A suggestions to fix the common problems associated with the problems of filtering hot solutions.
Mowery, Dwight F. J. Chem. Educ. 1986, 63, 509.
Laboratory Equipment / Apparatus
Updating older fume hoods  Saunders, G. Thomas
Modifying older fume hoods to comply with new regulatory requirements.
Saunders, G. Thomas J. Chem. Educ. 1985, 62, A178.
Laboratory Equipment / Apparatus |
Laboratory Management
Making Science Laboratory Equipment (Carelse, X. F.)  Sievers, Dennis
Methods needed to produce quality laboratory materials in developing nations.
Sievers, Dennis J. Chem. Educ. 1985, 62, A140.
Laboratory Equipment / Apparatus
A problem in calibrating a spectrophotometer  Johnson, James G.
Standardization checks should be carried out under exactly the same conditions as used for daily work with the instrument.
Johnson, James G. J. Chem. Educ. 1985, 62, 885.
Calibration |
Spectroscopy |
Instrumental Methods |
Laboratory Equipment / Apparatus
Construction of corrosion resistant, inexpensive lab lattices  Fisher, George H.; Levin, Arthur; Man, Eugene H.
Making corrosion resistant lab lattices from PVC pipe and fiberglass rods.
Fisher, George H.; Levin, Arthur; Man, Eugene H. J. Chem. Educ. 1985, 62, 819.
Laboratory Equipment / Apparatus |
Laboratory Management
A simple water-still alarm  Stock, John T.
An alarm to prevent overflow of a carboy filled by a steam-heated still.
Stock, John T. J. Chem. Educ. 1985, 62, 814.
Laboratory Equipment / Apparatus |
Laboratory Management
An inexpensive laboratory pump  Aymes, Daniel J. M.; Poupon, Ren; Paris, Michel R.
Design for a small pump for moving low flow rates of aqueous or organic solutions.
Aymes, Daniel J. M.; Poupon, Ren; Paris, Michel R. J. Chem. Educ. 1985, 62, 717.
Laboratory Equipment / Apparatus
A two-liter pipet for bomb calorimetry  Stout, Roland P.
A 2-L volumetric flask modified to deliver a constant volume of water at a constant temperature.
Stout, Roland P. J. Chem. Educ. 1985, 62, 634.
Laboratory Equipment / Apparatus
A convenient DC power source for laboratory applications  Rose, Emily J.; Shoer, Larry I.
Using small ac adapters to replace bulky dc power supplies.
Rose, Emily J.; Shoer, Larry I. J. Chem. Educ. 1985, 62, 620.
Laboratory Equipment / Apparatus
Silicone rubber as a sleeve mounting for a high-speed shaft bearing  Hall, H.; Eisenbraun, E. J.
Stabilizing a stirring shaft during high-speed stirring.
Hall, H.; Eisenbraun, E. J. J. Chem. Educ. 1985, 62, 617.
Laboratory Equipment / Apparatus
A simple low-cost device for temperature control in nonisothermic chemical kinetics in solution  Salvador, F.; Gonzalez, J. L.; Tel, L. M.
Design and operation of a temperature controller capable of reproducing a desired temperature / time heating curve.
Salvador, F.; Gonzalez, J. L.; Tel, L. M. J. Chem. Educ. 1985, 62, 613.
Kinetics |
Laboratory Equipment / Apparatus
An inexpensive shield for vacuum distillations  Loehle, W. David
Utilizes sheet acrylic bent to the right shape.
Loehle, W. David J. Chem. Educ. 1985, 62, 570.
Laboratory Equipment / Apparatus
A flexible, pressure equalizing sidearm  Lee, Albert W. M.
Construction of a flexible, pressure equalizing sidearm.
Lee, Albert W. M. J. Chem. Educ. 1985, 62, 548.
Laboratory Equipment / Apparatus
Signal-to-noise improvement: An instrumental analysis experiment  Vassos, B. H.; Lopez, E.
Circuit diagrams for a laboratory-made peak simulator, noise generator, and filtration device.
Vassos, B. H.; Lopez, E. J. Chem. Educ. 1985, 62, 542.
Instrumental Methods |
Laboratory Equipment / Apparatus
Low-pressure extraction  Flamini, Alberto; Poli, Nicola
Modifications to a Soxhlet extractor that works at low pressure.
Flamini, Alberto; Poli, Nicola J. Chem. Educ. 1985, 62, 533.
Separation Science |
Laboratory Equipment / Apparatus
An inexpensive mercury vapor lamp  Sands, Richard D.
Using a street lamp from a local hardware store.
Sands, Richard D. J. Chem. Educ. 1985, 62, 526.
Laboratory Equipment / Apparatus
An economical round bottom-flask stand  Lee, Albert W. M.; Lau, Man-Yiu
Using the bottom of 1.25-L and 2-L soft drink bottles.
Lee, Albert W. M.; Lau, Man-Yiu J. Chem. Educ. 1985, 62, 433.
Laboratory Equipment / Apparatus
Knives, forks, and beer cans as potentiometric sensors  Selig, Walter S.
Fluoride, halide, orthophosphate and sulfate titrations using aluminum and stainless steel sensors.
Selig, Walter S. J. Chem. Educ. 1985, 62, 431.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis |
Quantitative Analysis
An efficient and inexpensive temperature-controlled chromatography column  Henderson, Bambi L.; McLoughlin, Daniel J.
Inexpensive temperature-controlled chromatography columns can be constructed from old distillation columns.
Henderson, Bambi L.; McLoughlin, Daniel J. J. Chem. Educ. 1985, 62, 430.
Laboratory Equipment / Apparatus |
Chromatography |
Separation Science
A versatile system for vacuum-line manipulations  Wayda, Andrea L.; Dye, James L.
Working layout of a greaseless double-manifold vacuum line, auxiliary apparatus, procedures, and safety precautions.
Wayda, Andrea L.; Dye, James L. J. Chem. Educ. 1985, 62, 356.
Laboratory Equipment / Apparatus |
Laboratory Management
A simple, inexpensive gas discharge/cathode ray tube  Weichman, Roger L.
A gas discharge / cathode ray tube made from a condenser jacket and two large nails.
Weichman, Roger L. J. Chem. Educ. 1985, 62, 340.
Laboratory Equipment / Apparatus
An atomizer for a dime  Vergara, J. L.; Kreman, M. E.; Zamighi, G. A.; Simon, S. A.
A simple, inexpensive atomizer constructed from a 1-mL disposable pipet tip.
Vergara, J. L.; Kreman, M. E.; Zamighi, G. A.; Simon, S. A. J. Chem. Educ. 1985, 62, 244.
Laboratory Equipment / Apparatus
Low-cost elimination of plasma lines in Raman spectra  Behlow, Herbert W., Jr.; Petersen, John D.
A device that eliminates plasma lines from Raman spectra by filtering the laser beam before it impinges upon the sample
Behlow, Herbert W., Jr.; Petersen, John D. J. Chem. Educ. 1985, 62, 163.
Spectroscopy |
Raman Spectroscopy |
Lasers |
Laboratory Equipment / Apparatus
A simple apparatus for laboratory dry ice production  Ahn, Myong-Ku; Kjonaas, Richard A.
A collection bag attached to a cylinder of liquid CO2.
Ahn, Myong-Ku; Kjonaas, Richard A. J. Chem. Educ. 1985, 62, 90.
Laboratory Equipment / Apparatus
Choosing the right instrument: The modular approach. Part II  Strobel, Howard A.
How well can instrument specification be related to the behavior of modules? How often is a specification fixed by a single module?
Strobel, Howard A. J. Chem. Educ. 1984, 61, A89.
Instrumental Methods |
Laboratory Equipment / Apparatus
Choosing the right instrument: The modular approach. Part I.  Strobel, Howard A.
Considering instruments as systems rather than individually.
Strobel, Howard A. J. Chem. Educ. 1984, 61, A53.
Instrumental Methods |
Laboratory Management |
Laboratory Equipment / Apparatus
An inexpensive syringe for gas chromatography  Avila, Walter B.; Hamilton, Mark A.; Holwitt, Eric A.
Replacing expensive GC syringes with disposable, plastic insulin syringes.
Avila, Walter B.; Hamilton, Mark A.; Holwitt, Eric A. J. Chem. Educ. 1984, 61, 1109.
Laboratory Equipment / Apparatus |
Chromatography |
Separation Science |
Gas Chromatography |
Laboratory Management
A simple polarimeter and experiments utilizing an overhead projector  Dorn, H. C.; Bell, H.; Birkett, T.
Design and application of an overhead polarimeter that relies on small amounts of chiral solution and provides a "dual beam" light source for direct comparison of plane-polarized light emerging from chiral and achiral media.
Dorn, H. C.; Bell, H.; Birkett, T. J. Chem. Educ. 1984, 61, 1106.
Laboratory Equipment / Apparatus |
Chirality / Optical Activity |
Stereochemistry |
Molecular Properties / Structure
Three-dimensional pointers for stereoscopic projection  Hayman, H. J. G.
Three solutions to the problem of pointing at parts of a stereoscopic projection.
Hayman, H. J. G. J. Chem. Educ. 1984, 61, 1065.
Laboratory Equipment / Apparatus |
Molecular Properties / Structure |
Molecular Modeling
A device for direct potentiometric measurements of samples with very large electrical resistance  Oman, S.
An improvised combination of single electrodes for pH measurements of samples with very large electrical resistance, such as cosmetics and pharmaceutical emulsions and creams.
Oman, S. J. Chem. Educ. 1984, 61, 1029.
Laboratory Equipment / Apparatus |
pH |
Consumer Chemistry
An inexpensive thermistor thermometer for beginning chemistry laboratories  Srivastava, Shyam B.; Meloan, Clifton E.
Design of a thermistor thermometer for heats-of-reaction measurements to 0.1C over short temperature ranges.
Srivastava, Shyam B.; Meloan, Clifton E. J. Chem. Educ. 1984, 61, 1027.
Laboratory Equipment / Apparatus |
Calorimetry / Thermochemistry
Colorimetric titration experiment for the undergraduate laboratory  Lopez, Edwin; Vassos, Basil H.
The design and application of a colorimetric titration instrument that is rugged, free from ambient light interference, and inexpensive.
Lopez, Edwin; Vassos, Basil H. J. Chem. Educ. 1984, 61, 1025.
Titration / Volumetric Analysis |
Quantitative Analysis |
Laboratory Equipment / Apparatus
An inexpensive, very high impedance digital voltmeter for selective electrodes  Caceci, Marco S.
Design and construction of an instrument that exceeds in accuracy and input impedance most expensive commercial pH meters and potentiometers.
Caceci, Marco S. J. Chem. Educ. 1984, 61, 935.
Laboratory Equipment / Apparatus |
Electrochemistry |
pH
An alternative low-cost splash arrestor  Widener, R. K.
Using a plastic connecting tee to completely control splashing in laboratory sinks.
Widener, R. K. J. Chem. Educ. 1984, 61, 926.
Laboratory Equipment / Apparatus |
Laboratory Management
An inexpensive closure for dialysis tubing  Bambenek, Mark
Using plastic tubing and a glass rod as an inexpensive clamp for dialysis tubing.
Bambenek, Mark J. Chem. Educ. 1984, 61, 889.
Laboratory Equipment / Apparatus |
Laboratory Management
A simple method for detecting cracks in porcelain crucibles  McKenna, Jack F.
Inspecting crucibles for cracks by tapping them with a glass stirring rod.
McKenna, Jack F. J. Chem. Educ. 1984, 61, 817.
Laboratory Equipment / Apparatus |
Laboratory Management
An efficient solvent evaporating system  Rabman, Atta-ur; Doulatabadi, Nader
An efficient solvent evaporating system that obtains rates that are equivalent to 8-10 rotary evaporators and have been used to evaporate large quantities of plant extracts under mild conditions.
Rabman, Atta-ur; Doulatabadi, Nader J. Chem. Educ. 1984, 61, 810.
Laboratory Equipment / Apparatus |
Plant Chemistry
A small electronic device for studying chemical kinetics  Prez-Rodriguez, A. L.; Calvo-Aguilar, J. L.
Studying rates of reactions with a small electronic device and an oscilloscope overcomes the difficulty students encounter in solving the differential equations describing chemical equilibrium.
Prez-Rodriguez, A. L.; Calvo-Aguilar, J. L. J. Chem. Educ. 1984, 61, 808.
Laboratory Equipment / Apparatus |
Kinetics |
Rate Law
An inexpensive check valve of oil bubblers  Reingold, I. David; Lindeman, Theodore G.
A check valve for oil bubblers that protects nitrogen manifolds from oil backing up due to reduced pressure in the line.
Reingold, I. David; Lindeman, Theodore G. J. Chem. Educ. 1984, 61, 739.
Laboratory Equipment / Apparatus
An inexpensive, commercial-type, reference electrode  Randle, T. H.; Kelly, P. J.
Describes the construction of a simple, commercial-type electrode that is compact, not orientation sensitive, and requires the minimum of expensive materials (mercury and platinum).
Randle, T. H.; Kelly, P. J. J. Chem. Educ. 1984, 61, 721.
Laboratory Equipment / Apparatus |
Electrochemistry
Cheap drying-oven thermometers  Smith, David H.
Using a household oven thermometer.
Smith, David H. J. Chem. Educ. 1984, 61, 712.
Laboratory Equipment / Apparatus
A simple device for flash chromatography  Feigenbaum, A.
Device that eliminates the problems introduced by the requirement to use compressed air with flash chromatography.
Feigenbaum, A. J. Chem. Educ. 1984, 61, 649.
Chromatography |
Laboratory Equipment / Apparatus
Low-cost immersion heaters for water baths  Battino, Rubin
Using commercially available hot water immersion heaters.
Battino, Rubin J. Chem. Educ. 1984, 61, 563.
Laboratory Equipment / Apparatus |
Laboratory Management
Comparison of gravity filtering rates of regular, fluted, and helicoid-ribbed funnels  Fulton, Brent A.; Meloan, Clifton E.
Results of tests comparing filtering rates of regular, fluted, and helicoid-ribbed funnels.
Fulton, Brent A.; Meloan, Clifton E. J. Chem. Educ. 1984, 61, 554.
Laboratory Equipment / Apparatus
An inexpensive pipet-delivery device  Monti, Diego
An inexpensive pipet-delivery device for delivering corrosive products or solvents.
Monti, Diego J. Chem. Educ. 1984, 61, 521.
Laboratory Equipment / Apparatus
A functional steam bath at a fantastic bargain  Albury, Steven H.; Garrett, James M.
A simple steam bath attached to a steam line.
Albury, Steven H.; Garrett, James M. J. Chem. Educ. 1984, 61, 470.
Laboratory Equipment / Apparatus
An inexpensive, easily constructed cryostat for variable-temperature spectrophotometry  Burgstahler, Albert W.; McBain, Douglas S.
Easily made cryostat for use in standard UV-visible spectrophotometers that allows for adding reagents or withdrawing aliquots during operation.
Burgstahler, Albert W.; McBain, Douglas S. J. Chem. Educ. 1984, 61, 469.
Laboratory Equipment / Apparatus |
Spectroscopy |
UV-Vis Spectroscopy
A clamp to prevent breakage of separatory funnels  Concha, Guido A.
A double, snap-on clamp designed to hold separatory funnels.
Concha, Guido A. J. Chem. Educ. 1984, 61, 458.
Laboratory Equipment / Apparatus |
Laboratory Management
A simple apparatus for filtering air-sensitive solids  Cossy, J.; Feigenbaum, A.
Makes use of a double-tipped needle.
Cossy, J.; Feigenbaum, A. J. Chem. Educ. 1984, 61, 453.
Laboratory Equipment / Apparatus |
Separation Science
Reducing funnel breakage  Sprague, Gary
Fitting long-stem funnels with rubber bumpers to reduce breakage.
Sprague, Gary J. Chem. Educ. 1984, 61, 389.
Laboratory Equipment / Apparatus
Inexpensive ring holders for round-bottomed flasks  Moffett, Jonathan H.; Poncini, Laurence; Wimmer, Franz L.
Using plastic lids, bottles, and tubing to hold round-bottomed flasks.
Moffett, Jonathan H.; Poncini, Laurence; Wimmer, Franz L. J. Chem. Educ. 1984, 61, 388.
Laboratory Equipment / Apparatus |
Laboratory Management
An electronic thermometer using a precision temperature sensor  Chan, Eric K. D.; Ng, Wing-yan
Components and circuit diagram for an electronic thermometer.
Chan, Eric K. D.; Ng, Wing-yan J. Chem. Educ. 1984, 61, 386.
Laboratory Equipment / Apparatus
Homemade lab equipment  Schmuckler, Joseph S.
Cites past Journal articles dealing with inexpensive equipment that can be constructed in the lab.
Schmuckler, Joseph S. J. Chem. Educ. 1984, 61, 385.
Laboratory Equipment / Apparatus
Homemade lab equipment  Schmuckler, Joseph S.
Cites past Journal articles dealing with inexpensive equipment that can be constructed in the lab.
Schmuckler, Joseph S. J. Chem. Educ. 1984, 61, 385.
Laboratory Equipment / Apparatus
Modification of a microwave oven for laboratory use  Andrews, Judith; Atkinson, George F.
Modifying a microwave oven to protect it against energy buildup when samples are dried by using a small water ballast.
Andrews, Judith; Atkinson, George F. J. Chem. Educ. 1984, 61, 177.
Laboratory Equipment / Apparatus
Rubber bulb modification for pipetting  Davis, Joe B.
A simple modification to a rubber bulb to make it easier to insert a pipet.
Davis, Joe B. J. Chem. Educ. 1984, 61, 81.
Laboratory Equipment / Apparatus
Potentiometric titrations using pencil and graphite sensors  Selig, Walter S.
Methods for using pencil and graphite sensors for many types of potentiometric titrations.
Selig, Walter S. J. Chem. Educ. 1984, 61, 80.
Electrochemistry |
Titration / Volumetric Analysis |
Laboratory Equipment / Apparatus
The laboratory use of chemical instrumentation in the undergraduate chemistry curriculum  Pickral, George M.
The purpose of the study reported in this article is to determine present use of chemical instrumentation in the undergraduate chemistry curriculum of four-year colleges and universities in the United States. This is the first study to break down instrument usage into six course areas: general chemistry, organic, analytical, physical, integrated laboratories and research. [Includes "Introduction to Chemical Instrumentation," on the debut of the renewal of the series, under the editorship of Frank A. Settle, Jr.]
Pickral, George M. J. Chem. Educ. 1983, 60, A338.
Laboratory Equipment / Apparatus |
Laboratory Management
Two readily-constructed instruments for the teaching laboratory  Isaacs, Neil S.
The authors report designs for a colorimeter and for a polarimeter; both of which may be constructed readily with average workshop facilities and whose performance is superior to many commercial instruments commonly in use in teaching laboratories.
Isaacs, Neil S. J. Chem. Educ. 1983, 60, 607.
Quantitative Analysis |
Laboratory Equipment / Apparatus
An improvement for chromatography  Chiong, Hung-Cheh; Wang, Pei-Lin
A simpler setup for conducting chromatography experiments with colorless liquids.
Chiong, Hung-Cheh; Wang, Pei-Lin J. Chem. Educ. 1983, 60, 419.
Chromatography |
Liquids |
Laboratory Equipment / Apparatus
Ion and bio-selective membrane electrodes  Rechnitz, Garry A.
A gap exists between standard textbooks and the research literature on the subject of ion and bio-selective membrane electrodes . This gap challenges the instructor in any effort to provide an effective treatment of potentiometric membrane electrodes for undergraduate students. This article offers some teaching strategies to overcome this gap. From State-of-the-Art Symposium: Electrochemistry, ACS meeting, Kansas City, 1982.
Rechnitz, Garry A. J. Chem. Educ. 1983, 60, 282.
Ion Selective Electrodes |
Bioanalytical Chemistry |
Laboratory Equipment / Apparatus
An effective demonstration of some properties of real vapors  Metsger, D. Scott
The apparatus described in this article has been found by the authors to be the most effective in vividly illustrating the behavior of a nearly ideal gas to first year chemistry students.
Metsger, D. Scott J. Chem. Educ. 1983, 60, 67.
Laboratory Equipment / Apparatus |
Gases |
Physical Properties |
Solids
The design of an inexpensive, reliable, and rapid-acting fraction collector  Bell, Duncan H.
Features a spring-driven collector head with a clock-style escapement mechanism for the precise and rapid advancement of the collection tubes.
Bell, Duncan H. J. Chem. Educ. 1982, 59, 1082.
Laboratory Equipment / Apparatus |
Laboratory Management |
Separation Science
Pressurized solvent reservoir for high-pressure liquid chromatography  Naleway, John J.
A pressurized solvent reservoir for high-pressure liquid chromatography that slightly pressurizes the mobile phase before entry into the pumping system and also filters the liquid at the same time.
Naleway, John J. J. Chem. Educ. 1982, 59, 1078.
Chromatography |
Laboratory Equipment / Apparatus |
HPLC
A modification of the copper catalysis demonstration apparatus  Olsen, Edwin S.; Ashmore, R. E.
A modification to an earlier device for illustrating the oxidation of alcohols to carbonyl compounds over a copper catalyst.
Olsen, Edwin S.; Ashmore, R. E. J. Chem. Educ. 1982, 59, 1042.
Catalysis |
Alcohols |
Laboratory Equipment / Apparatus
Pinchcock pipetting  Horn, A. H.
Modification to make the mouth operation of the conventional pipet acceptable.
Horn, A. H. J. Chem. Educ. 1982, 59, 1041.
Laboratory Equipment / Apparatus
Data generation in the classroom  Blanco, Luis H.
A pendulum device for generating data for statistical analysis.
Blanco, Luis H. J. Chem. Educ. 1982, 59, 1028.
Chemometrics |
Laboratory Equipment / Apparatus
Another economical reflux/distillation apparatus (the author replies)  Marabella, C. P.
The author replies to earlier comments.
Marabella, C. P. J. Chem. Educ. 1982, 59, 988.
Laboratory Equipment / Apparatus |
Laboratory Management
Another economical reflux/distillation apparatus  Woolf, A. A.
A more efficient reflux/distillation apparatus.
Woolf, A. A. J. Chem. Educ. 1982, 59, 988.
Laboratory Equipment / Apparatus |
Laboratory Management
Transport of caffeine through Millipore filter  Rujimethabhas, Manit; Crossley, John
Examines the permeation of caffeine through a prepared diffusion cell.
Rujimethabhas, Manit; Crossley, John J. Chem. Educ. 1982, 59, 876.
Mass Spectrometry |
Laboratory Equipment / Apparatus |
Membranes
An alkali metal sampler  King, Baldwin
Method for drawing molten sodium or potassium up into capillary glass in order to obtain a weighed quantity of the pure metal.
King, Baldwin J. Chem. Educ. 1982, 59, 867.
Metals |
Laboratory Equipment / Apparatus |
Laboratory Management
Preventing solid distillate accumulation during steam distillation  Sands, Richard D.
Device for preventing the accumulation of solid distillate without interupting steam distillation.
Sands, Richard D. J. Chem. Educ. 1982, 59, 796.
Laboratory Equipment / Apparatus
Syringes as pipet fillers  Hermens, Richard A.
Using a syringe to draw liquids into a pipet.
Hermens, Richard A. J. Chem. Educ. 1982, 59, 676.
Laboratory Equipment / Apparatus |
Laboratory Management
Hot melt glue gun in the laboratory  Williams, Howard P.
Using a hot glue gun to make repairs in the laboratory.
Williams, Howard P. J. Chem. Educ. 1982, 59, 655.
Laboratory Equipment / Apparatus
The construction of a simple pyrolysis gas chromatograph  Hedrick, Jack L.
Constructing and using a simple PGC system made from outmoded gas chromatographs.
Hedrick, Jack L. J. Chem. Educ. 1982, 59, 612.
Gas Chromatography |
Chromatography |
Laboratory Equipment / Apparatus |
Separation Science
A versatile separating flask  Cartwright, M.
Including a Teflon tap on the side arm of a previously described flask.
Cartwright, M. J. Chem. Educ. 1982, 59, 587.
Laboratory Equipment / Apparatus
A pipet/reagent stand  Garrett, James M.
Design of a combination pipet / reagent bottle stand.
Garrett, James M. J. Chem. Educ. 1982, 59, 436.
Laboratory Equipment / Apparatus
A convenient device for the control of reduced pressures  Blankenship, C.
A glass capillary tube can be used to replace a needle valve.
Blankenship, C. J. Chem. Educ. 1982, 59, 433.
Laboratory Equipment / Apparatus |
Gases
Determination of pyrite in coal and lignite by thermomagnetic analysis  Hyman, M.; Rowe, M. W.
Uses an earlier described Faraday balance to determine the pyrite content of coal and lignite.
Hyman, M.; Rowe, M. W. J. Chem. Educ. 1982, 59, 424.
Magnetic Properties |
Laboratory Equipment / Apparatus |
Natural Products
Flask support for weighings  Rothchild, Robert
A light-weight alternative for supporting round-bottomed flasks during massing.
Rothchild, Robert J. Chem. Educ. 1982, 59, 339.
Laboratory Equipment / Apparatus |
Laboratory Management
Low-cost programmed oven temperature controller  Clubine, Gerald D.
Circuit diagarms for a programmed oven temperature controller.
Clubine, Gerald D. J. Chem. Educ. 1982, 59, 338.
Laboratory Equipment / Apparatus
A simple conductivity water cut-off switch  Neto, F. R. Aquino; Carvalhaes, S. F.; Cardoso, J. N.
Deactivates a heating system in response to a drop in water supply.
Neto, F. R. Aquino; Carvalhaes, S. F.; Cardoso, J. N. J. Chem. Educ. 1982, 59, 259.
Laboratory Equipment / Apparatus
Versatile, inexpensive support plates for the laboratory  Harris, Thomas D.
Constructing large support platforms from iron plates and plywood.
Harris, Thomas D. J. Chem. Educ. 1982, 59, 256.
Laboratory Equipment / Apparatus |
Laboratory Management
A simple and inexpensive preparative TLC applicator  Lavallee, P.; Muzart, J.
A simple thin layer chromstography applicator that allows for the application of narrow streaks without holes or grooves, even when homemade plates are used.
Lavallee, P.; Muzart, J. J. Chem. Educ. 1982, 59, 250.
Thin Layer Chromatography |
Separation Science |
Laboratory Equipment / Apparatus
An inexpensive liquid chromatography apparatus for undergraduate teaching  McCamish, Malcolm; Cannell, G. R.; Bretherton, L.
Description of a low-pressure liquid chromatography pump, slurry filler, stainless steel columns, and injector system suited to an undergraduate laboratory or routine analysis.
McCamish, Malcolm; Cannell, G. R.; Bretherton, L. J. Chem. Educ. 1982, 59, 249.
Chromatography |
Separation Science |
Laboratory Equipment / Apparatus
Rotary evaporator repair  Rothchild, Robert
Two methods for removing a defective seal on a rotary evaporator.
Rothchild, Robert J. Chem. Educ. 1982, 59, 241.
Laboratory Equipment / Apparatus |
Laboratory Management |
Separation Science
pH meter revisions  Eisnor, Charles R.
Two modifications to an earlier published design for an electronic pH meter.
Eisnor, Charles R. J. Chem. Educ. 1982, 59, 240.
Laboratory Equipment / Apparatus |
pH
Safety inserter tips  Talesnick, Irwin
Fit the end of "cork borers" for inserting glass tubing.
Talesnick, Irwin J. Chem. Educ. 1982, 59, 168.
Laboratory Equipment / Apparatus
DeVilbiss #33 atomizer  Henderson, Bro. Eric
Produces a very fine spray.
Henderson, Bro. Eric J. Chem. Educ. 1982, 59, 168.
Laboratory Equipment / Apparatus
A simple semimicro distillation apparatus  Henin, F.; Hericher, M.; Muzart, J.
A small distillation unit for fractional distillation of small amounts of material under vacuum.
Henin, F.; Hericher, M.; Muzart, J. J. Chem. Educ. 1982, 59, 164.
Separation Science |
Microscale Lab |
Laboratory Equipment / Apparatus
Specific gravity pipets  Cabrera, Sergio H.; Concha, Guido A.
Modifying volumetric pipets to determine specific gravity.
Cabrera, Sergio H.; Concha, Guido A. J. Chem. Educ. 1982, 59, 162.
Laboratory Equipment / Apparatus
A handy spirit lamp  Chaco, M. C.
Design for an alcohol burner.
Chaco, M. C. J. Chem. Educ. 1982, 59, 80.
Laboratory Equipment / Apparatus
Regulating the speed of a magnetic stirrer  Deckey, George
Diminishing the primary magnetic field of the stirring magnet with an aluminum plate.
Deckey, George J. Chem. Educ. 1982, 59, 73.
Laboratory Equipment / Apparatus |
Magnetic Properties
A simple method for sample application in chromatography  Lo, J. M.
A simple applicator made of a rubber bulb and glass capillary tube.
Lo, J. M. J. Chem. Educ. 1982, 59, 66.
Chromatography |
Laboratory Equipment / Apparatus |
Separation Science
The construction of inexpensive digital pH meters  Warner, Brian D.; Boehme, Gerhard; Pool, Karl L.
Parts list and circuit diagram for a low-cost pH meter.
Warner, Brian D.; Boehme, Gerhard; Pool, Karl L. J. Chem. Educ. 1982, 59, 65.
Laboratory Equipment / Apparatus |
pH |
Acids / Bases |
Quantitative Analysis
Some like it hot  Cohen, Sheldon H.
Design of three homemade heating devices: a light bulb hot plate, an electric flask heater, and a voltage controller.
Cohen, Sheldon H. J. Chem. Educ. 1982, 59, 62.
Laboratory Equipment / Apparatus
Penholder adapters for the Perkin-Elmer 710B, 137 IR and Varian T-60 NMR instruments  Bailey, R. A.; Zubrick, J. W.
Adapters that permit the use of ordinary felt-tipped pens.
Bailey, R. A.; Zubrick, J. W. J. Chem. Educ. 1982, 59, 21.
Laboratory Equipment / Apparatus |
NMR Spectroscopy |
Laboratory Management
Evaluation of asbestos fiber hazard from wire gauzes  Yager, Billy J.
Students are concerned with the use of wire gauzes due to their asbestos content.
Yager, Billy J. J. Chem. Educ. 1981, 58, A134.
Laboratory Equipment / Apparatus |
Laboratory Management
High technology laboratory aids for visually handicapped chemistry students  Lunney, David; Morrison, Robert C.
This article will discuss the aids that use modern electronics technology to enable visually handicapped students to make accurate laboratory measurements and to interact independently with computers and scientific instruments.
Lunney, David; Morrison, Robert C. J. Chem. Educ. 1981, 58, 228.
Laboratory Computing / Interfacing |
Laboratory Equipment / Apparatus
Balloons and the teaching of chemistry  Dewhurst, F.; Dewhurst, F. R.
Balloons are a remarkably useful tool for the chemical educationalist. Balloons can not only provide cheap, safe, and easy-to-use alternatives to more complex and costly equipment, but also they can be used as effective teaching aids to demonstrate principles of structural chemistry.
Dewhurst, F.; Dewhurst, F. R. J. Chem. Educ. 1981, 58, 44.
Gases |
Laboratory Equipment / Apparatus
CII. Automated anodic stripping voltammetry  Stock, John T.
Circuitry and use of a computer-controlled, anodic stripping analyzer.
Stock, John T. J. Chem. Educ. 1980, 57, A125.
Instrumental Methods |
Laboratory Computing / Interfacing |
Laboratory Equipment / Apparatus
Inexpensive method to eliminate aspirator splashing  Niewahner, J. H.
Attaching rubber hose to the aspirator.
Niewahner, J. H. J. Chem. Educ. 1980, 57, 906.
Laboratory Equipment / Apparatus |
Laboratory Management
Construction and evaluation of a solid-state iodide selective electrode: A chemical instrumentation laboratory experiment  Papastathopoulos, D. S.; Karayannis, M. I.
The experiment is based on the construction of a crystalline homogeneous membrane electrode (solid-state type) employing an AgI/Ag2S coprecipitate pellet-sensing membrane.
Papastathopoulos, D. S.; Karayannis, M. I. J. Chem. Educ. 1980, 57, 904.
Ion Selective Electrodes |
Laboratory Equipment / Apparatus |
Instrumental Methods
Constant current source for student use in voltammetric titrations  Muha, G. M.; Pepis, E. N.
A simple constant current source for student use in voltammetric titrations with a rotating platinum or dual polarized microelectrodes.
Muha, G. M.; Pepis, E. N. J. Chem. Educ. 1980, 57, 878.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis |
Electrochemistry
Constant current source for student use in voltammetric titrations  Muha, G. M.; Pepis, E. N.
A simple constant current source for student use in voltammetric titrations with a rotating platinum or dual polarized microelectrodes.
Muha, G. M.; Pepis, E. N. J. Chem. Educ. 1980, 57, 878.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis |
Electrochemistry
An extra function for the manual temperature compensation control on pH meters  Eilbeck, W. John
The manual temperature compensation control on pH meters changes the RT/F slope.
Eilbeck, W. John J. Chem. Educ. 1980, 57, 834.
Laboratory Equipment / Apparatus |
pH
An efficient and inexpensive device for washing NMR tubes  Angrick, Michael; Bauer, Hans
Improvements on two earlier devices.
Angrick, Michael; Bauer, Hans J. Chem. Educ. 1980, 57, 680.
NMR Spectroscopy |
Laboratory Equipment / Apparatus |
Laboratory Management
Filter-pipets  Concha, Guido A.
Fitting a fritted, glass filter cup on the end of a volumetric pipet.
Concha, Guido A. J. Chem. Educ. 1980, 57, 677.
Laboratory Equipment / Apparatus
An adapter for heat gun drying of laboratory glassware  Eisenbraun, E. J.; Hall, Heinz
Adding a extended nozzle to a heavy-duty heat gun for drying laboratory glassware.
Eisenbraun, E. J.; Hall, Heinz J. Chem. Educ. 1980, 57, 568.
Laboratory Equipment / Apparatus
An inexpensive Kugelrohr still  Guida, Wayne C.; Gawley, Robert E.
Plan for a simple unit that is superior to some commercial devices.
Guida, Wayne C.; Gawley, Robert E. J. Chem. Educ. 1980, 57, 554.
Laboratory Equipment / Apparatus |
Separation Science
Prolonging the life of a glovebag  Hilsdorf, George, S. J.; Uriarte, Richard J.
The latex gloves are coupled to the bag with a metal band to improve dexterity and life.
Hilsdorf, George, S. J.; Uriarte, Richard J. J. Chem. Educ. 1980, 57, 522.
Laboratory Equipment / Apparatus |
Laboratory Management
Coated-wire ion selective electrodes and their application to the teaching laboratory  Martin, Charles R.; Freiser, Henry
Describes the procedure for construction of a nitrate coated-wire ion selective electrodes and suggests experiments for the evaluation of electrode response and illustration of typical analytical applications of ion selective electrodes.
Martin, Charles R.; Freiser, Henry J. Chem. Educ. 1980, 57, 512.
Laboratory Equipment / Apparatus |
Ion Selective Electrodes |
Electrochemistry
Improvements in rotary evaporation equipment  Goff, Harold M.; Phillippi, Martin A.
A condenser flask for use with rotary evaporators that markedly improves their efficiency and utility.
Goff, Harold M.; Phillippi, Martin A. J. Chem. Educ. 1980, 57, 511.
Laboratory Equipment / Apparatus
Comparison of pipets: A laboratory experiment  May, Leopold
Students are required to report the accuracy and precision of various pipets.
May, Leopold J. Chem. Educ. 1980, 57, 483.
Laboratory Equipment / Apparatus
An inexpensive digital thermometer  Gaus, Paul L.; Yut, Greg
Design for a digital thermometer using a thermistor and a digital multimeter.
Gaus, Paul L.; Yut, Greg J. Chem. Educ. 1980, 57, 477.
Laboratory Equipment / Apparatus
Technique for controlling the filling rate of a pipet  Welty, Philip K.
Merely resting the tip of a pipet on the bottom of the container from which the sample is drawn substantially slows the filling rate.
Welty, Philip K. J. Chem. Educ. 1980, 57, 474.
Laboratory Equipment / Apparatus |
Laboratory Management
A variable reference beam attenuator for infrared spectrophotometers  Garin, David L.; Windsor, Ted
An iris diaphragm used to adjust the reference beam in an IR spectrophotometer.
Garin, David L.; Windsor, Ted J. Chem. Educ. 1980, 57, 463.
Spectroscopy |
Laboratory Equipment / Apparatus |
IR Spectroscopy
A readily constructed long path-length cell for infrared spectroscopy  Grant, Douglas H.
Minor modifications to the barrels of the Wilks "Mini-Press" provides long path-length IR cells.
Grant, Douglas H. J. Chem. Educ. 1980, 57, 389.
IR Spectroscopy |
Laboratory Equipment / Apparatus
Toward reduced laboratory glassware breakage  Rothchild, Robert
Increasing the life of glass syringes by adding rubber bumpers made of heavy-walled tubing.
Rothchild, Robert J. Chem. Educ. 1980, 57, 315.
Laboratory Management |
Laboratory Equipment / Apparatus
A simple and convenient ion-selective electrode for instructional use  Schwartz, Leslie J.; Grant, Edward R.
A particularly simple and quick method for students to make ion-selective membranes for use in ion-selective electrodes.
Schwartz, Leslie J.; Grant, Edward R. J. Chem. Educ. 1980, 57, 311.
Ion Selective Electrodes |
Laboratory Equipment / Apparatus
Inexpensive pipet delivery device  Knevel, Adelbert M.
Placing a perforated micro test tube in a pipet bulb to facilitate its operation.
Knevel, Adelbert M. J. Chem. Educ. 1980, 57, 285.
Laboratory Equipment / Apparatus
Simple high precision laboratory valves from polyethylene tubing  Piel, Elmar
Various configurations for folded polyethylene tubing to be used as improvised valves.
Piel, Elmar J. Chem. Educ. 1980, 57, 234.
Laboratory Equipment / Apparatus |
Laboratory Management
Efficient use of the Kofler Heizbank melting point apparatus  Brown, W. H.
Using of the Kofler Hotbench as a micro drying oven.
Brown, W. H. J. Chem. Educ. 1980, 57, 231.
Laboratory Equipment / Apparatus |
Physical Properties |
Microscale Lab
An economical and efficient reflux/distillation apparatus  Marabella, Charles P.
A modified standard distillation head and vacuum takeoff adapter.
Marabella, Charles P. J. Chem. Educ. 1980, 57, 221.
Separation Science |
Laboratory Equipment / Apparatus
Magnetic stirring devices for use with overhead projectors  Battino, Rubin; DuFour, Howard R.; Scott, John L.
Designs for three magnetic stirrers that can be used on an overhead projector.
Battino, Rubin; DuFour, Howard R.; Scott, John L. J. Chem. Educ. 1980, 57, 184.
Laboratory Equipment / Apparatus
A substitute for mercury electrode contacts  Bradford, John L.
Substituting steel wool or copper turnings for mercury as electrode contacts.
Bradford, John L. J. Chem. Educ. 1980, 57, 159.
Laboratory Equipment / Apparatus |
Electrochemistry
An improved microbulb vacuum distillation apparatus  Saplay, Kishore M.
Improved version of an earlier modified Kugelrohr.
Saplay, Kishore M. J. Chem. Educ. 1980, 57, 124.
Laboratory Equipment / Apparatus |
Separation Science
Solution to a potentially hazardous wiring problem in melting point units  Leonard, Jack E.
Rewiring to correct incorrectly wired Mel-Temp melting point units.
Leonard, Jack E. J. Chem. Educ. 1980, 57, 119.
Laboratory Equipment / Apparatus |
Laboratory Management
C. Solid state electrometer for pH and specific ion electrode potential measurements  Edstrom, Ronald D.
Design, construction, and operation of a solid state electrometer for pH and specific ion electrode potential measurements.
Edstrom, Ronald D. J. Chem. Educ. 1979, 56, A169.
Laboratory Equipment / Apparatus |
pH |
Ion Selective Electrodes |
Electrochemistry
Inexpensive pipet filter  Van Atta, Robert E.; Kamback, Dwight O.
A superior but inexpensive pipet filter relies on a rubber bulb and a simple bead/tube assembly.
Van Atta, Robert E.; Kamback, Dwight O. J. Chem. Educ. 1979, 56, 756.
Laboratory Equipment / Apparatus
Transfer tube for air-sensitive liquids or solutions  Niewahner, J. H.
Allows syringing of an air-sensitive liquid or solution from a septum reagent bottle to a reaction flask without having the material at the needle tip coming in contact with air.
Niewahner, J. H. J. Chem. Educ. 1979, 56, 686.
Laboratory Equipment / Apparatus |
Laboratory Management
Low-cost, flexible, overtemperature warning system  Clubine, Gerald D.
Block and circuit diagrams for an overtemperature warning system.
Clubine, Gerald D. J. Chem. Educ. 1979, 56, 668.
Laboratory Equipment / Apparatus |
Laboratory Management
Inexpensive Gouy balances  Cavanaugh, Margaret A.
Uses a triple beam balance.
Cavanaugh, Margaret A. J. Chem. Educ. 1979, 56, 550.
Laboratory Equipment / Apparatus |
Magnetic Properties
Hg vapor lamp from streetlight  Mattson, Bruce M.
Design of a simple photolysis apparatus equipped with a Hg vapor UV lamp.
Mattson, Bruce M. J. Chem. Educ. 1979, 56, 542.
Applications of Chemistry |
Photochemistry |
Laboratory Equipment / Apparatus
An inexpensive sample cell for laser spectrophotometry  Kwon, O'Dae; Pollin, J. S.; Martin, R. J.
A general purpose vacuum-to-high pressure cell that can be fabricated inexpensively.
Kwon, O'Dae; Pollin, J. S.; Martin, R. J. J. Chem. Educ. 1979, 56, 527.
Lasers |
Spectroscopy |
Laboratory Equipment / Apparatus
A simple device for rinsing microliter syringes  Delfel, Norman E.
Polyethylene quick-disconnect tubing connectors can be converted into compact, inexpensive syringe rinsers.
Delfel, Norman E. J. Chem. Educ. 1979, 56, 525.
Laboratory Equipment / Apparatus |
Laboratory Management
A laboratory use for discarded plastic beverage bottles  Aronson, John N.
Converting 2-L plastic bottles into powder funnels and ice buckets.
Aronson, John N. J. Chem. Educ. 1979, 56, 476.
Laboratory Equipment / Apparatus |
Laboratory Management
Inexpensive buret tips and sample tubes  Denio, Allen A.
Substituting disposable polypropylene pipet tips for traditional glass tips.
Denio, Allen A. J. Chem. Educ. 1979, 56, 464.
Laboratory Equipment / Apparatus
An inexpensive KBr pellet press  Pahler, Leon F.; Hall, Heinz; Eisenbraun, Edmund J.
Design for an improved and inexpensive KBr pellet press.
Pahler, Leon F.; Hall, Heinz; Eisenbraun, Edmund J. J. Chem. Educ. 1979, 56, 447.
Spectroscopy |
Laboratory Equipment / Apparatus |
Laboratory Management
An inexpensive electrode switch  Whitworth, Clarence; Pagenkopf, Gordon K.
Design for a simple and inexpensive electrode switch.
Whitworth, Clarence; Pagenkopf, Gordon K. J. Chem. Educ. 1979, 56, 416.
Laboratory Equipment / Apparatus |
Ion Selective Electrodes |
Electrochemistry
A disposable, slow-addition funnel for small-scale preparative reactions  Magnusson, Gran
Uses two disposable pipets connected by a piece of latex tubing for slow additions of small volumes of reagent.
Magnusson, Gran J. Chem. Educ. 1979, 56, 410.
Laboratory Equipment / Apparatus |
Microscale Lab
A fraction collector for students  Fisher, Tom L.
The only special component required is a 0.25 revolution/hour synchronous motor.
Fisher, Tom L. J. Chem. Educ. 1979, 56, 347.
Laboratory Equipment / Apparatus
A simple and inexpensive modification for coaxial nmr cells  Nelson, Harold C.
Employing sections of various gauge, Teflon tubing that encircle the reference tube.
Nelson, Harold C. J. Chem. Educ. 1979, 56, 306.
Laboratory Equipment / Apparatus |
Spectroscopy |
NMR Spectroscopy
The vacu-viewer - A simple device for observing the pressure inside a vacuum desiccator  Todd, David
A modification to the common T-manometer that can fit inside a desiccator.
Todd, David J. Chem. Educ. 1979, 56, 274.
Laboratory Equipment / Apparatus |
Laboratory Management
A method to prevent septum bleeding in high temperature gas chromatography  Lafosse, M.
Applying a porous Teflon frit to prevent septum bleeding in high temperature gas chromatography.
Lafosse, M. J. Chem. Educ. 1979, 56, 202.
Gas Chromatography |
Laboratory Equipment / Apparatus |
Laboratory Management
Hood-size sand bath  Barbeau, Claude; Marquis, Gaston
Plan for a large sand bath custom-made for fume hoods.
Barbeau, Claude; Marquis, Gaston J. Chem. Educ. 1979, 56, 136.
Laboratory Equipment / Apparatus |
Laboratory Management
Adapting polyethylene tubing in chemical apparatus assembly  Piel, Elmar
Low density polyethylene tubing with physical characteristics about midway between glass and rubber provides tubing that for many uses is superior to both.
Piel, Elmar J. Chem. Educ. 1979, 56, 135.
Laboratory Equipment / Apparatus |
Laboratory Management
Convenient laboratory storage of glassware for organic chemistry  Beatty, James W.; Scott, Earle S.; Scamehorn, Richard G.
Using clips in pegboard to hold and organize organic chemistry laboratory glassware.
Beatty, James W.; Scott, Earle S.; Scamehorn, Richard G. J. Chem. Educ. 1979, 56, 134.
Laboratory Equipment / Apparatus |
Laboratory Management
Coulometry experiments using simple electronic devices  Amend, John; Grimsrud, Eric
Constant current and controlled potential coulometry experiments and circuits.
Amend, John; Grimsrud, Eric J. Chem. Educ. 1979, 56, 131.
Electrochemistry |
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis |
Quantitative Analysis
A simple sub-zero trap for moisture removal  Chu, Samuel S.-T.
A method for drying nitrogen under pressure.
Chu, Samuel S.-T. J. Chem. Educ. 1979, 56, 113.
Laboratory Equipment / Apparatus |
Laboratory Management
A microcomputer-controlled transient recorder: A simple and instructive experiment in interfacing  Barrett, Tom; Lunney, David; Salt, Alger D.; Walter, Marc
An experiment to introduce computer interfacing into the laboratory.
Barrett, Tom; Lunney, David; Salt, Alger D.; Walter, Marc J. Chem. Educ. 1979, 56, 67.
Laboratory Equipment / Apparatus |
Instrumental Methods |
Laboratory Computing / Interfacing
A student constructed potentiometric electrode and semi-auto titrator system  Seemuth, D. P.; Hall, J. L.; Robertson, K. A.; Huber, C. O.
Construction and use of a solid state PbO2-Ag electrode system.
Seemuth, D. P.; Hall, J. L.; Robertson, K. A.; Huber, C. O. J. Chem. Educ. 1979, 56, 65.
Laboratory Equipment / Apparatus |
Electrochemistry |
Titration / Volumetric Analysis |
Quantitative Analysis
A simple compensating-type Gouy tube  Davis, William J.
A simpler and cheaper device than that described in the referenced article.
Davis, William J. J. Chem. Educ. 1979, 56, 55.
Laboratory Equipment / Apparatus
Lab hint  Smith, Douglas D.
Using rubber eye-dropper bulbs to protect the glass ends of equipment.
Smith, Douglas D. J. Chem. Educ. 1979, 56, 47.
Laboratory Equipment / Apparatus |
Laboratory Management
XCVIII. Experiments involving thermal methods of analysis for undergraduate chemistry laboratories [part one]  Earnest, Charles M.
Due to the increasing number of applications of thermoanalytical techniques in the modern world, and the corresponding dearth of academic activity in teaching these techniques, some experiments which may be incorporated into undergraduate teaching laboratory are offered here.
Earnest, Charles M. J. Chem. Educ. 1978, 55, A331.
Laboratory Equipment / Apparatus
Economical and safe laboratory heat control  Rothchild, Robert
Providing controllable heat sources in the undergraduate chemistry laboratory has traditionally been difficult. The author offers a more economical and potentially safer means of heat control.
Rothchild, Robert J. Chem. Educ. 1978, 55, 501.
Laboratory Equipment / Apparatus |
Laboratory Management
Versatile and inexpensive lens holder for optics experiments  Spirk, Sherman A.; Friedrich, Donald M.
A simple and versatile lens holder that can be constructed from readily available parts.
Spirk, Sherman A.; Friedrich, Donald M. J. Chem. Educ. 1977, 54, 768.
Laboratory Equipment / Apparatus
Simple bubbler for reducing the consumption of gases  Fieselmann, Benjamin F.; Stucky, Galen
The solenoid controlled bubbler presented reduces the use of inert gases during the reflux and distillation of dried, oxygen-free solvents by at least a factor of ten.
Fieselmann, Benjamin F.; Stucky, Galen J. Chem. Educ. 1977, 54, 652.
Laboratory Equipment / Apparatus |
Laboratory Management |
Gases
Wash bottle for volatile solvents  Goetz, Rudolph
Modifying conventional wash bottles to make them practical for volatile solvents.
Goetz, Rudolph J. Chem. Educ. 1977, 54, 634.
Laboratory Equipment / Apparatus |
Laboratory Management
Aspirator trap bottle assembly  Greenberg, Fred H.
Suggests an aspirator consisting tape-wrapped, quart milk bottle in hollow, concrete block.
Greenberg, Fred H. J. Chem. Educ. 1977, 54, 611.
Laboratory Equipment / Apparatus
Automatic potentiometric titrations  Pinkham, Chester A.; Field, Brownlee
Use of a constant flow buret to perform automated potentiometric titrations.
Pinkham, Chester A.; Field, Brownlee J. Chem. Educ. 1977, 54, 577.
Titration / Volumetric Analysis |
Instrumental Methods |
Laboratory Equipment / Apparatus |
Laboratory Management
Inexpensive laboratory flood control and alarm device  Carlson, A.; Criss, C. M.
Construction of a simple and inexpensive flood-control unit.
Carlson, A.; Criss, C. M. J. Chem. Educ. 1977, 54, 573.
Laboratory Equipment / Apparatus |
Laboratory Management
Simple glass connector for Teflon tubing  Peterson, John I.; Dehn, William R.
A simple means of making connections between sections of Teflon tubing.
Peterson, John I.; Dehn, William R. J. Chem. Educ. 1977, 54, 547.
Laboratory Equipment / Apparatus |
Laboratory Management
Versatile pen-holder for chart recorders  Nieschlag, Henry J.
Using a small binder clip as a versatile pen-holder for chart recorders.
Nieschlag, Henry J. J. Chem. Educ. 1977, 54, 542.
Instrumental Methods |
Laboratory Equipment / Apparatus
Lecture demonstration digital multimeter  Myers, Gardiner H.; Dugan, Robert J.
Plans for a Lecture Demonstration Digital Multimeter used to measure and display electric potential, current, temperature, pressure, and pH.
Myers, Gardiner H.; Dugan, Robert J. J. Chem. Educ. 1977, 54, 495.
Laboratory Equipment / Apparatus |
pH |
Electrochemistry
A Device for easy demonstration of optical activity and optical rotatory dispersion  Kinney, John B.; Skinner, James F.
Describes a portable device that can be used for the simultaneous demonstration of both optical activity and optical rotatory dispersion for individual students and for a class with an overhead projector.
Kinney, John B.; Skinner, James F. J. Chem. Educ. 1977, 54, 494.
Chirality / Optical Activity |
Molecular Properties / Structure |
Enantiomers |
Laboratory Equipment / Apparatus
Inexpensive +5V digital power supply  Jespersen, Neil
Using "battery eliminator" devices as inexpensive power supplies.
Jespersen, Neil J. Chem. Educ. 1977, 54, 460.
Laboratory Equipment / Apparatus |
Laboratory Management
Ear syringe pipetting bulb  Hanson, Richard H.
Using ear syringes as pipet bulbs.
Hanson, Richard H. J. Chem. Educ. 1977, 54, 434.
Laboratory Equipment / Apparatus |
Laboratory Management
Pre-filter for removing suspended solids from HPLC samples  Bailey, Leonard C.
A pre-filter attached to the inlet of an HPLC injector.
Bailey, Leonard C. J. Chem. Educ. 1977, 54, 428.
Laboratory Equipment / Apparatus |
Separation Science |
HPLC |
Chromatography
The construction of a reciprocating shaker  Brisbin, Thomas D.; Allen, Herbert E.
The design and construction of a reciprocating shaker for chemical and biological application.
Brisbin, Thomas D.; Allen, Herbert E. J. Chem. Educ. 1977, 54, 395.
Laboratory Equipment / Apparatus
Inexpensive solvent storage cabinet that meets OSHA requirements  Taylor, Paul J.
A wooden, solvent storage cabinet.
Taylor, Paul J. J. Chem. Educ. 1977, 54, 347.
Laboratory Equipment / Apparatus |
Laboratory Management
Convenient and inexpensive laboratory jack  Rakoff, Henry
A modified, small hydraulic jack.
Rakoff, Henry J. Chem. Educ. 1977, 54, 320.
Laboratory Equipment / Apparatus |
Laboratory Management
Inexpensive safety device for the chemical laboratory  Hon, P. K.
A device to turn of the electricity when a water supply runs low or is stopped.
Hon, P. K. J. Chem. Educ. 1977, 54, 283.
Laboratory Equipment / Apparatus |
Laboratory Management
Cheap and durable cuvet washer  Deneke, Carl F.; Krinsky, Norman I.
A simple and inexpensive device for washing spectrophotometer cuvets.
Deneke, Carl F.; Krinsky, Norman I. J. Chem. Educ. 1977, 54, 257.
Laboratory Equipment / Apparatus |
Laboratory Management |
Spectroscopy
Magnetic stirrers of local construction  Hall, Heinz; Eisenbraun, E. J.
Design of a magnetic stirrer that is housed in a protective housing for improved safety.
Hall, Heinz; Eisenbraun, E. J. J. Chem. Educ. 1977, 54, 229.
Laboratory Equipment / Apparatus |
Laboratory Management
Simple, inexpensive and reliable do-it-yourself chromatography columns  Lehky, Pavel
Reliable chromatography columns of sizes ranging from 3 to 30 mm ID can be assembled within a few minutes using current laboratory material.
Lehky, Pavel J. Chem. Educ. 1977, 54, 227.
Chromatography |
Separation Science |
Laboratory Equipment / Apparatus |
Laboratory Management
Low-cost, repeating, precision pipetter for student use  Peirson, David R.
The Cornwall pipetter is ideal for use in teaching laboratories where it can provide safe, rapid, precision pipetting of most liquids.
Peirson, David R. J. Chem. Educ. 1977, 54, 173.
Laboratory Equipment / Apparatus |
Laboratory Management
A simple and inexpensive steam generator for essential oils extraction  Craveiro, Afranio A.; Matos, F. J. A.; de Alencar, J. W.
This apparatus aids in essential oil extraction.
Craveiro, Afranio A.; Matos, F. J. A.; de Alencar, J. W. J. Chem. Educ. 1976, 53, 652.
Natural Products |
Laboratory Equipment / Apparatus |
Separation Science
Photooxidation of methionine. An integrated organic-analytical-biochemistry laboratory experiment  Lewis, Catherine; Scouten, William H.
The experiments presented here familiarize the student with the organic reactions necessary to prepare the starting material; introduces the use of glass beads for immobilizing a catalyst; demonstrates the use of light and methylene blue as oxidizers; requires the implementation of an important analytical technique, thin layer chromatography; provides the student with a good example of the reactivity of one amino acid, methionine.
Lewis, Catherine; Scouten, William H. J. Chem. Educ. 1976, 53, 395.
Thin Layer Chromatography |
Amino Acids |
Laboratory Equipment / Apparatus |
Catalysis
CXXIX. Biological safety cabinets for contamination control  Baldwin, C. L.; Errico, P. H.
Reviews the potential for infections in the laboratory, the characteristics of biological safety cabinets, and suggestions for selecting, certifying, and decontaminating such a cabinet.
Baldwin, C. L.; Errico, P. H. J. Chem. Educ. 1975, 52, A545.
Laboratory Equipment / Apparatus |
Laboratory Management
LXXXVII. DC power supplies for the laboratory [part one]  Ewing, Galen W.
Reviews the characteristics of commercial power supplies for the laboratory.
Ewing, Galen W. J. Chem. Educ. 1975, 52, A537.
Laboratory Equipment / Apparatus |
Laboratory Management
LXXXII. Home-built equipment in the teaching laboratory  Stock, John T.
Considers modular equipment for measuring electrolytic conductance and electronic coulometry.
Stock, John T. J. Chem. Educ. 1975, 52, A165.
Laboratory Equipment / Apparatus |
Instrumental Methods |
Electrochemistry
Tygon stirring bars  Gribble, Gordon W.; Kutzenco, Philip D.
Tygon stirring bars should not be used with organic solvents.
Gribble, Gordon W.; Kutzenco, Philip D. J. Chem. Educ. 1975, 52, 820.
Laboratory Equipment / Apparatus
A simple and inexpensive eye irrigation fountain  Dewald, R. R.; Haas, T. E.; Norder, W. A.
Design for a simple and inexpensive eye irrigation fountain.
Dewald, R. R.; Haas, T. E.; Norder, W. A. J. Chem. Educ. 1975, 52, 810.
Laboratory Equipment / Apparatus |
Laboratory Management
Square cuvet holder for the Spectronic 20  Aronson, John N.
Design of a holder for square, Spec 20 cuvets.
Aronson, John N. J. Chem. Educ. 1975, 52, 800.
Spectroscopy |
Laboratory Equipment / Apparatus |
Laboratory Management
A simple flask rinser  Everson, Robert J.
Design for a simple flask rinser.
Everson, Robert J. J. Chem. Educ. 1975, 52, 789.
Laboratory Equipment / Apparatus |
Laboratory Management
Two simple modifications of the common type of metal filterpump  Hartman, Karel; Towner, William H.
Two simple modifications to reduce problems with the common type of metal filterpump.
Hartman, Karel; Towner, William H. J. Chem. Educ. 1975, 52, 786.
Laboratory Equipment / Apparatus |
Laboratory Management
The latent heat of vaporization of an organic solid: An undergraduate experiment  Khouw, B. H.; Pritchard, H. O.
A series of experiments based on a mass spectrometer to help students visualize the latent heat of vaporization for a relatively involatile solid.
Khouw, B. H.; Pritchard, H. O. J. Chem. Educ. 1975, 52, 730.
Phases / Phase Transitions / Diagrams |
Laboratory Equipment / Apparatus |
Physical Properties |
Mass Spectrometry |
Gas Chromatography
A vacuum sublimator for student use  Greenberg, Fred H.
A convenient vacuum sublimator can be constructed from a side arm tube and polyester film.
Greenberg, Fred H. J. Chem. Educ. 1975, 52, 720.
Laboratory Equipment / Apparatus |
Laboratory Management
An alternate method for the storage of scientific glassware  Haynes, LeRoy W.; Beyerle, Elmer B.
Using packing peanuts to store glassware.
Haynes, LeRoy W.; Beyerle, Elmer B. J. Chem. Educ. 1975, 52, 657.
Laboratory Management |
Laboratory Equipment / Apparatus
A plastic dam  Sweet, Frederick
Using plastic food wrap for pressing solvent out of the filter cake during vacuum filtration.
Sweet, Frederick J. Chem. Educ. 1975, 52, 614.
Laboratory Equipment / Apparatus |
Laboratory Management
A simple, inexpensive flow indicator for cooling water  Factor, Arnold; Factor, Bradford J.
A convenient and inexpensive flow indicator for use in monitoring the flow of tap water used in cooling condensers.
Factor, Arnold; Factor, Bradford J. J. Chem. Educ. 1975, 52, 603.
Laboratory Equipment / Apparatus |
Laboratory Management
Ion-exchange resins - A simple apparatus  Morelli, Basilio; Lampugnani, Leonardo
A modified procedure and apparatus for speeding up the use of ion-exchange resins.
Morelli, Basilio; Lampugnani, Leonardo J. Chem. Educ. 1975, 52, 572.
Laboratory Equipment / Apparatus |
Ion Exchange |
Separation Science
A simple sample holder for use in thermostat tanks  Greig, D. G. T.
Using a floating platform to support samples in a thermostated water bath.
Greig, D. G. T. J. Chem. Educ. 1975, 52, 549.
Laboratory Equipment / Apparatus |
Laboratory Management
A simple water cut-off switch  Coughlan, Brendan; O'Sullivan, Dan
Design for a simple and reliable water cut-off switch with no moving parts.
Coughlan, Brendan; O'Sullivan, Dan J. Chem. Educ. 1975, 52, 522.
Laboratory Equipment / Apparatus |
Laboratory Management
An inexpensive dry box for undergraduate use  Bunce, N. J.
Design of an inexpensive dry box for undergraduate use.
Bunce, N. J. J. Chem. Educ. 1975, 52, 474.
Laboratory Equipment / Apparatus |
Laboratory Management
A time-share based simulator to teach the use of digital computers  Seelig, Paul F.; Blount, Henry N.
A course to acquaint students with the laboratory based digital computer as a chemical tool.
Seelig, Paul F.; Blount, Henry N. J. Chem. Educ. 1975, 52, 469.
Laboratory Equipment / Apparatus
Fractionating column heater for student use  Mowery, Dwight F., Jr.
Using the standard condenser found in all ground-joint organic laboratory kits to heat a fractionating column.
Mowery, Dwight F., Jr. J. Chem. Educ. 1975, 52, 436.
Laboratory Equipment / Apparatus |
Separation Science
The gooseneck clamp  Wilson, S. R.
Making a gooseneck clamp by welding together an old lamp gooseneck and a clamp.
Wilson, S. R. J. Chem. Educ. 1975, 52, 407.
Laboratory Equipment / Apparatus
A convenient device for drying microliter syringes  Koshy, Kalavelil M.
A convenient device for drying microliter syringes.
Koshy, Kalavelil M. J. Chem. Educ. 1975, 52, 395.
Laboratory Equipment / Apparatus |
Laboratory Management |
Microscale Lab
An inexpensive pipetting device  Racusen, David
Using a bulb as an inexpensive pipetting device.
Racusen, David J. Chem. Educ. 1975, 52, 386.
Laboratory Equipment / Apparatus
Improving the speed control of magnetic stirrers  Eikenberry, Eric F.
A sheet of aluminum placed on top of a magnetic stirrer improves its control without otherwise affecting its operation.
Eikenberry, Eric F. J. Chem. Educ. 1975, 52, 385.
Laboratory Equipment / Apparatus
An inexpensive laboratory jack apparatus for undergraduate laboratories  Power, L. F.; Bedford, H.
A very simple and low cost design for a laboratory jack.
Power, L. F.; Bedford, H. J. Chem. Educ. 1975, 52, 348.
Laboratory Equipment / Apparatus
An experiment illustrating countercurrent chromatography with simple apparatus  Godinho, Oswaldo E. S.; Braga, Gilberto L.
Illustrates countercurrent chromatography with a simple apparatus and an experiment involving the separation of the indicators Phenol Red and Bromcresol Purple.
Godinho, Oswaldo E. S.; Braga, Gilberto L. J. Chem. Educ. 1975, 52, 258.
Chromatography |
Laboratory Equipment / Apparatus |
Dyes / Pigments |
Separation Science
A Vidicon detection system for teaching absorption spectroscopy  Richtol, H. H.; Nelson, D. L.; Reeves, R. R.
Describes the conversion of a television system into an absorption spectrograph that can be used as a live demonstration.
Richtol, H. H.; Nelson, D. L.; Reeves, R. R. J. Chem. Educ. 1975, 52, 218.
Laboratory Equipment / Apparatus |
Spectroscopy
An inexpensive low pressure reactor  Masler, W. F.; Burnett, R. E.; Morrison, J. D.; Chaney, P. A.; Wheeler, C. M.
Plans and parts for a low pressure reactor used in a hydrogenation experiment.
Masler, W. F.; Burnett, R. E.; Morrison, J. D.; Chaney, P. A.; Wheeler, C. M. J. Chem. Educ. 1975, 52, 202.
Laboratory Equipment / Apparatus
A simple method for reducing the breakage of glass columns in gas chromatography  Becker, M. Alice; Naftchi, N. Eric
A simple device that circumvents the breakage problem yet gives the column flexibility without loss of inertness.
Becker, M. Alice; Naftchi, N. Eric J. Chem. Educ. 1975, 52, 115.
Laboratory Equipment / Apparatus |
Laboratory Management |
Chromatography
Preparative reduction of benzil: Use of a polarographic analyzer and simple current booster  Carney, J. H.; Mullis, O. J.
The authors report a simple laboratory experiment which demonstrates some of the preparative and mechanistic electrochemistry of ketones in acid solution. The also describe a simple and inexpensive apparatus for preparative scale electrochemistry.
Carney, J. H.; Mullis, O. J. J. Chem. Educ. 1974, 51, 343.
Electrochemistry |
Aldehydes / Ketones |
Acids / Bases |
Laboratory Equipment / Apparatus
An improved design for soap-bubble flowmeters  LaHue, Miles D.; Heck, Ronald J.; Dombi, Geza; Axelrod, Herman D.
An improved design reduces or eliminates most of the inherent problems encountered in using large diameter soap-bubble flowmeters.
LaHue, Miles D.; Heck, Ronald J.; Dombi, Geza; Axelrod, Herman D. J. Chem. Educ. 1973, 50, 867.
Laboratory Equipment / Apparatus |
Gases
A variable volume, problem-free repetitive pipet  Blackman, David.; Sanchez, Guillermo
Describes a variable volume, repetitive pipet that does not react adversely with liquid reagents.
Blackman, David.; Sanchez, Guillermo J. Chem. Educ. 1973, 50, 851.
Laboratory Equipment / Apparatus
The construction of inexpensive robust containers for low temperature baths  Freeland, B. H.
Using cut, concentrated acid bottles as robust containers for low temperature baths.
Freeland, B. H. J. Chem. Educ. 1973, 50, 845.
Laboratory Equipment / Apparatus
A simple and inexpensive ring oven  Herrera, Nicolas M.; Laux, Carolyn D.
This simple ring oven relies on a light bulb as its heat source.
Herrera, Nicolas M.; Laux, Carolyn D. J. Chem. Educ. 1973, 50, 756.
Laboratory Equipment / Apparatus
Inexpensive improvement of single pan balances  McKay, Edward S.; Vasers, Alise
Reducing the abuse of single pan, automatic balances by attaching plastic stops on either side of the operating lever.
McKay, Edward S.; Vasers, Alise J. Chem. Educ. 1973, 50, 710.
Laboratory Equipment / Apparatus |
Laboratory Management
Capital equipment breakage liability  Brooks, David W.
Recommends to treat capital equipment breakage liability as a part of consumable expense.
Brooks, David W. J. Chem. Educ. 1973, 50, 662.
Laboratory Equipment / Apparatus |
Laboratory Management
A simple liquid-liquid continuous extractor  Holder, Richard W.
For extractions of a material from a more-dense to a less-dense solvent, the setup depicted is convenient and can be constructed entirely from readily available glassware.
Holder, Richard W. J. Chem. Educ. 1973, 50, 639.
Laboratory Equipment / Apparatus |
Separation Science
A stabilized linear direct reading conductance apparatus. The solvolysis of t-butyl chloride  Cyr, T.; Prudhomme, J.; Zador, M.
A simple ac conductivity apparatus for experiments in chemical kinetics is described; the instrument is sufficiently reliable that it can be used by first year students and assembled in a few hours.
Cyr, T.; Prudhomme, J.; Zador, M. J. Chem. Educ. 1973, 50, 572.
Laboratory Equipment / Apparatus |
Instrumental Methods |
Electrochemistry |
Kinetics
Simple procedures for ir spectra of solids in the 20-120C range  Bowman, Max I.; Larson, Wilbur S.; Dougherty, Thomas E.
A procedure that has definite advantages over the KBr pellet method for routine student use in the laboratory.
Bowman, Max I.; Larson, Wilbur S.; Dougherty, Thomas E. J. Chem. Educ. 1973, 50, 517.
Laboratory Equipment / Apparatus |
Spectroscopy |
IR Spectroscopy
A temperature-regulated cell holder for the Beckman DK-2A spectrophotometer  Templeton, J. Charles
Design for a a temperature-regulated cell holder for the Beckman DK-2A spectrophotometer.
Templeton, J. Charles J. Chem. Educ. 1973, 50, 483.
Spectroscopy |
Laboratory Equipment / Apparatus
A simple split-field polarimeter  Kapauan, A. F.
A simple split-field polarimeter can be constructed easily for a few dollars from readily available materials.
Kapauan, A. F. J. Chem. Educ. 1973, 50, 376.
Laboratory Equipment / Apparatus
Audible pocket monitors for radiochemistry laboratory classes  deBruin, H. J.; Bridger, B. A.
A cheap pocket monitor that provides audible warning for beta, gamma, and X-ray radiation.
deBruin, H. J.; Bridger, B. A. J. Chem. Educ. 1973, 50, 373.
Laboratory Equipment / Apparatus |
Laboratory Management
A spectrophotometer cell stopper for syringe transfer  Toma, Henrique E.; Malin, John M.
A Teflon stopper that reduces the difficulties in making spectrophotometric measurements of air-sensitive reagents.
Toma, Henrique E.; Malin, John M. J. Chem. Educ. 1973, 50, 272.
Laboratory Equipment / Apparatus |
Spectroscopy
A passive seal for ground glass joints  Gay, Charles F.
Indium wire can be used for sealing ground glass joints in static applications that normally require other techniques.
Gay, Charles F. J. Chem. Educ. 1973, 50, 269.
Laboratory Equipment / Apparatus |
Laboratory Management
An inexpensive magnetic stirrer  Ellis, J.; Kanamori, S.
Constructing a portable magnetic stirrer from an automobile windshield wiper motor.
Ellis, J.; Kanamori, S. J. Chem. Educ. 1973, 50, 137.
Laboratory Equipment / Apparatus
An inexpensive conductivity monitor for column operation  Ford, A.; Meloan, C. E.
Circuit diagrams for a column chromatography conductivity monitor.
Ford, A.; Meloan, C. E. J. Chem. Educ. 1973, 50, 85.
Laboratory Equipment / Apparatus |
Chromatography |
Separation Science
An automatic laboratory flood-control system  Becsey, Julius G.; Froebe, Larry R.
Design of an automatic laboratory flood-control system.
Becsey, Julius G.; Froebe, Larry R. J. Chem. Educ. 1973, 50, 84.
Laboratory Equipment / Apparatus |
Laboratory Management
Dry ice baths, the easy way  Land, H. Bruce III
Obtaining CO2 in syphon tube bottles and generating dry ice in the quantities needed on demand can eliminate many problems.
Land, H. Bruce III J. Chem. Educ. 1973, 50, 78.
Laboratory Equipment / Apparatus |
Laboratory Management
Microreactor with needle valve  Razo, Lorenzo
Design for a microreactor with needle valve.
Razo, Lorenzo J. Chem. Educ. 1973, 50, 73.
Laboratory Equipment / Apparatus |
Microscale Lab |
Laboratory Management
Thermal analysis techniques: Part I. Thermobalances (continued)  Wendlandt, W. W.
Examines commercial thermobalances, including four types of simultaneous TG-DTA instruments.
Wendlandt, W. W. J. Chem. Educ. 1972, 49, A623.
Instrumental Methods |
Laboratory Equipment / Apparatus |
Gravimetric Analysis
Thermal analysis techniques - Part I. Thermobalances  Wendlandt, W. W.
Examines thermal analysis techniques, thermogravimetry, and a variety of commercial thermobalances.
Wendlandt, W. W. J. Chem. Educ. 1972, 49, A571.
Instrumental Methods |
Laboratory Equipment / Apparatus |
Gravimetric Analysis
A simple electronic integrator with digital read-out  Lindstrom, M.; Sundholm, G.
Presents a circuit diagram for a coulometer / current integrator.
Lindstrom, M.; Sundholm, G. J. Chem. Educ. 1972, 49, 847.
Laboratory Equipment / Apparatus |
Electrochemistry |
Instrumental Methods
A convenient method for supernatant removal  Heyl, Michael G.
The removal of unwanted supernatants from centrifuged samples can be greatly facilitated by the device presented.
Heyl, Michael G. J. Chem. Educ. 1972, 49, 804.
Laboratory Equipment / Apparatus |
Laboratory Management
An improved apparatus for the slow addition of solid suspensions to reaction mixtures  Lustig, Robert S.
Describes an improved apparatus for the slow addition of solid suspensions to reaction mixtures.
Lustig, Robert S. J. Chem. Educ. 1972, 49, 784.
Laboratory Equipment / Apparatus |
Laboratory Management
A simple alarm to aid in preparative glpc fraction collection  Lustig, Robert S.
A simple alarm that can be adjusted to "sound off" when the recorder pen of a preparative gas chromatograph reaches a preset height above the base line.
Lustig, Robert S. J. Chem. Educ. 1972, 49, 760.
Gas Chromatography |
Laboratory Equipment / Apparatus |
Separation Science
An inexpensive shaking water bath  Dewhurst, F.; Green, K. L.
Producing a satisfactory shaking water bath for test tubes and small flasks using a vibratory mixer
Dewhurst, F.; Green, K. L. J. Chem. Educ. 1972, 49, 701.
Laboratory Equipment / Apparatus
Construction of a thermogravimetric balance based on the Hall effect  Jensen, Richard E.; Swenson, Richard P.
Construction, testing, and operation of a thermogravimetric balance based on the Hall effect.
Jensen, Richard E.; Swenson, Richard P. J. Chem. Educ. 1972, 49, 648.
Laboratory Equipment / Apparatus |
Magnetic Properties
Student flowmeters and an air pollution experiment  Kohn, Harold W.
Using glass wool as an absorbent for atmospheric contaminants and three simple devices for measuring flow rates of gases.
Kohn, Harold W. J. Chem. Educ. 1972, 49, 643.
Atmospheric Chemistry |
Gases |
Laboratory Equipment / Apparatus
A safe, inexpensive heat source for undergraduate laboratories  Burshnick, E. J.; Roberts, R. M.; Monti, S. A.; McElwee, D. L.; Gilbert, J. C.
This heating source is flameless, highly efficient, safe, and easy to use.
Burshnick, E. J.; Roberts, R. M.; Monti, S. A.; McElwee, D. L.; Gilbert, J. C. J. Chem. Educ. 1972, 49, 623.
Laboratory Equipment / Apparatus |
Laboratory Management
A simple apparatus for drying gases  Fraga, E. R.; Schifino, J.
A simple apparatus that relies on silica gel for drying gases.
Fraga, E. R.; Schifino, J. J. Chem. Educ. 1972, 49, 553.
Laboratory Equipment / Apparatus |
Gases |
Laboratory Management
An apparatus for determining the composition of solutions  Castell, Jerry; Amis, Edward S.
An evaporating apparatus constructed from a beaker and a glass fritted crucible.
Castell, Jerry; Amis, Edward S. J. Chem. Educ. 1972, 49, 500.
Laboratory Equipment / Apparatus |
Solutions / Solvents |
Separation Science
Thermal, flow, and coolant level switch  Davies, T. K.; Hodapp, H.
Design for a switch that can be used for most coolant flow and over-heating problems.
Davies, T. K.; Hodapp, H. J. Chem. Educ. 1972, 49, 443.
Laboratory Equipment / Apparatus
A laboratory steam generator and steam distillation apparatus  Eisenbraun, E. J.; Hall, H.; Adkins, M. W.
Design for a laboratory steam generator and steam distillation apparatus.
Eisenbraun, E. J.; Hall, H.; Adkins, M. W. J. Chem. Educ. 1972, 49, 441.
Laboratory Equipment / Apparatus
Infrared KBr pellet apparatus  Kletsch, Richard
A design for an infrared KBr pellet press.
Kletsch, Richard J. Chem. Educ. 1972, 49, 438.
IR Spectroscopy |
Laboratory Equipment / Apparatus
A practical inexpensive hydrostatic switch  de Lima, R. Alves; Lima, J. Ferreira
This device interrupts current to heating baths and other equipment whenever the water pressure drops below a preset minimum.
de Lima, R. Alves; Lima, J. Ferreira J. Chem. Educ. 1972, 49, 404.
Laboratory Equipment / Apparatus |
Laboratory Management
A simple and inexpensive constant rate driver for syringes  Lustig, Robert S.
Presents a simple and inexpensive constant rate driver to add small quantities of liquids at a constant rate.
Lustig, Robert S. J. Chem. Educ. 1972, 49, 370.
Laboratory Equipment / Apparatus |
Liquids |
Laboratory Management
Discarded penicillin bottles for constructing reference electrodes  Ramamurti, G.; Ranganathan, K.; Ganesan, L. R.
Penicillin bottles can be used for making convenient reference electrodes in potentiometric experiments.
Ramamurti, G.; Ranganathan, K.; Ganesan, L. R. J. Chem. Educ. 1972, 49, 366.
Electrochemistry |
Laboratory Equipment / Apparatus |
Quantitative Analysis
A semiautomatic moving boundary apparatus  Yager, Billy J.; Smith, Patricia Y.
Presents a moving boundary apparatus that records the movement of the boundary past pairs of microelectrodes by the change in conductance.
Yager, Billy J.; Smith, Patricia Y. J. Chem. Educ. 1972, 49, 363.
Laboratory Equipment / Apparatus |
Electrochemistry
A simple pressure applicator device for column chromatography  Chen, S. C.
Diagrams a simple pressure applicator for column chromatography.
Chen, S. C. J. Chem. Educ. 1972, 49, 318.
Laboratory Equipment / Apparatus |
Chromatography
A multi-purpose separatory funnel  Kim, Young S.; Zeitlin, Harry
Design of a multi-purpose separatory funnel equipped with a Teflon stopcock in which a number of operations can be carried out conveniently.
Kim, Young S.; Zeitlin, Harry J. Chem. Educ. 1972, 49, 296.
Laboratory Equipment / Apparatus |
Separation Science
Safety device for wet test meters with mercury manometers  Green, Richard
A safety device for eliminating mercury spills from wet test meters with mercury manometers.
Green, Richard J. Chem. Educ. 1972, 49, 236.
Laboratory Management |
Laboratory Equipment / Apparatus
A cheap vibration-free base for sensitive balances  Ganesan, L. R.; Renganathan, S.
Using tennis balls sandwiched between two planks as a cheap vibration-free base for sensitive balances.
Ganesan, L. R.; Renganathan, S. J. Chem. Educ. 1972, 49, 201.
Laboratory Equipment / Apparatus
Solvent extraction apparatus  Tobey, Stephen W.
Describes a solvent extraction head that provides an apparatus in which all regular laboratory continuous solvent extractions can be performed.
Tobey, Stephen W. J. Chem. Educ. 1972, 49, 141.
Separation Science |
Laboratory Equipment / Apparatus |
Solutions / Solvents
A simple apparatus for teaching the principles of chromatography  Kellomaki, Aarre
A device that follows the elution of electrolytes through liquid column chromatography by continuously measuring the conductivity of the effluent.
Kellomaki, Aarre J. Chem. Educ. 1972, 49, 139.
Chromatography |
Laboratory Equipment / Apparatus |
Separation Science
Controlled evaporation with an extended hotplate top  Atkinson, George F.; Curtis, K. E.
A device that enables the evaporation of sample solutions to a small volume with a greatly reduced risk of baking them dry.
Atkinson, George F.; Curtis, K. E. J. Chem. Educ. 1972, 49, 108.
Laboratory Equipment / Apparatus
An easily constructed aerosol sprayer  Patsiga, Robert A.
A simple plan for producing aerosol sprays of chemical solutions.
Patsiga, Robert A. J. Chem. Educ. 1972, 49, 20.
Laboratory Equipment / Apparatus
Constant temperature air bath  Yager, Billy J.; Smith, Patricia Y.
A constant temperature air bath is constructed from two polystyrene packing cases.
Yager, Billy J.; Smith, Patricia Y. J. Chem. Educ. 1971, 48, 839.
Laboratory Equipment / Apparatus
Inert atmosphere enclosures  Druding, Leonard F.
Examines glove bags, glove boxes, and the use of inert atmospheres.
Druding, Leonard F. J. Chem. Educ. 1970, 47, A815.
Laboratory Equipment / Apparatus |
Laboratory Management
Protective lockout and tagging of equipment  Gatwood, G. T.
Examines purpose, responsibility, procedure, and violations with regards to the protective lockout and tagging of equipment.
Gatwood, G. T. J. Chem. Educ. 1970, 47, A585.
Laboratory Equipment / Apparatus |
Laboratory Management
A sealed stirring device  Vithanage, Cyril
The stirrer described here is very simple in design and can be used when a leakproof stirrer is required for enclosed chemical reactions.
Vithanage, Cyril J. Chem. Educ. 1970, 47, 552.
Laboratory Equipment / Apparatus
The construction and use of constant-rate burets and addition funnels  Allen, William M.; Shelden, H. Raymond
This paper describes how burets and addition funnels can be easily modified to operate in either a normal or a constant-rate mode, thus bringing recorded titrations within reach of all laboratories.
Allen, William M.; Shelden, H. Raymond J. Chem. Educ. 1970, 47, 841.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis
Emission spectroscopy using a photoresistor as a light detector  McMeekin, Samuel G.; Toby, Frina S.; Toby, Sidney
Describes a simple, robust yet sensitive light detector system that relies on a cadmium sulfoselenide photoresistor.
McMeekin, Samuel G.; Toby, Frina S.; Toby, Sidney J. Chem. Educ. 1970, 47, 832.
Spectroscopy |
Instrumental Methods |
Laboratory Equipment / Apparatus |
Atomic Spectroscopy
Evaporative cooling condenser  Goldberg, Stanley I.; Bailey, William D.
Design for a condenser that operates on the principle of evaporative cooling through the use of compressed air and is constructed from ordinary laboratory condensers.
Goldberg, Stanley I.; Bailey, William D. J. Chem. Educ. 1970, 47, 783.
Laboratory Equipment / Apparatus |
Phases / Phase Transitions / Diagrams
Safety enclosure for mercury filled McLeod gauge  Lippert, Ernest J., Jr.; Glas, Joseph P.
The enclosure presented both protects the gauge and contains the mercury if breakage should occur.
Lippert, Ernest J., Jr.; Glas, Joseph P. J. Chem. Educ. 1970, 47, 755.
Laboratory Equipment / Apparatus |
Laboratory Management
Simple, inexpensive laboratory stirring motor  Sprague, Peter W.; Ziegler, Stanley
Describes a mechanical stirrer constructed from an electric motor and machined aluminum parts.
Sprague, Peter W.; Ziegler, Stanley J. Chem. Educ. 1970, 47, 726.
Laboratory Equipment / Apparatus
New dispenser for small volumes of solids  Ringen, John C.
The container described automatically dispenses a constant volume of solid when the button in the cap is pushed.
Ringen, John C. J. Chem. Educ. 1970, 47, 720.
Laboratory Equipment / Apparatus |
Laboratory Management
Use of felt-tipped pens with recorders  Ringen, John C.
Using a felt-tipped pen with recorders eliminates problems with pens that rely on ink reservoirs.
Ringen, John C. J. Chem. Educ. 1970, 47, 716.
Laboratory Equipment / Apparatus |
Laboratory Management |
Instrumental Methods
Inexpensive, efficient NMR tube cleaner  Ladner, Kenneth H.; Hinton, James F.
A simple device that cleans NMR tubes quickly and efficiently is presented.
Ladner, Kenneth H.; Hinton, James F. J. Chem. Educ. 1970, 47, 704.
NMR Spectroscopy |
Laboratory Equipment / Apparatus |
Laboratory Management
A thermocouple reference bath with long term stability  Braunstein, Jerry; Ray, Ridley
Placing a Dewar in an ice chest filled with ice is found to maintain a nearly constant reference, ice-water mixture temperature within the Dewar for six months.
Braunstein, Jerry; Ray, Ridley J. Chem. Educ. 1970, 47, 611.
Laboratory Equipment / Apparatus
Reference beam attenuator for ir spectrophotometer  Helsen, Jef
Design for a simple reference beam attenuator for an ir spectrophotometer.
Helsen, Jef J. Chem. Educ. 1970, 47, 576.
Instrumental Methods |
IR Spectroscopy |
Laboratory Equipment / Apparatus
A new and efficient gas trap  Horodniak, J. W.; Indictor, N.
A new gas trap has been devised that is easier to construct and more efficient than standard gas traps used in organic laboratories.
Horodniak, J. W.; Indictor, N. J. Chem. Educ. 1970, 47, 568.
Laboratory Equipment / Apparatus |
Gases |
Laboratory Management
Modification of paper electrophoresis equipment to accommodate polyacetate strips  Simmons, W. B.; Fendley, T. W.; Melius, P.
The paper electrophoresis migration chamber Model E-800-2B made by Research Specialties Company has been adapted to accept cellulose polyacetate strips.
Simmons, W. B.; Fendley, T. W.; Melius, P. J. Chem. Educ. 1970, 47, 562.
Electrophoresis |
Laboratory Equipment / Apparatus
A sealed stirring device  Vithanage, Cyril
The stirrer described here is very simple in design and can be used when a leakproof stirrer is required for enclosed chemical reactions.
Vithanage, Cyril J. Chem. Educ. 1970, 47, 552.
Laboratory Equipment / Apparatus
An apparatus for washing NMR tubes  Jacobsen, N. W.
A small glass unit is convenient for cleaning, rinsing, and drying eight standard size NMR tubes simultaneously.
Jacobsen, N. W. J. Chem. Educ. 1970, 47, 507.
Laboratory Equipment / Apparatus |
NMR Spectroscopy |
Laboratory Management
An operational, amplifier-controlled chemical coulometer for determining n-values  Beadel, Edward F., Jr.; Lovecchio, Frank V.; Minot, Melvyn C.; Macero, Daniel J.
By placing a chemical coulometer in the feedback loop of an operational amplifier, instead of a capacitor as is commonly done, a novel approach is realized for the determination of analytical concentration.
Beadel, Edward F., Jr.; Lovecchio, Frank V.; Minot, Melvyn C.; Macero, Daniel J. J. Chem. Educ. 1970, 47, 483.
Laboratory Equipment / Apparatus |
Electrochemistry
A simple streaker for preparative layer chromatography  Altman, L. J.; Trudell, James R.
Presents a simple streaker for preparative layer chromatography and explains its use.
Altman, L. J.; Trudell, James R. J. Chem. Educ. 1970, 47, 404.
Chromatography |
Separation Science |
Laboratory Equipment / Apparatus
An inexpensive resistometer for student laboratory use  Klatt, L. N.; Coleman, D. M.; Domalakes, R. J.; Van Atta, R. E.
The relatively simple resistometer described in this article may be constructed from inexpensive components by students with little previous knowledge of electrical instrumentation.
Klatt, L. N.; Coleman, D. M.; Domalakes, R. J.; Van Atta, R. E. J. Chem. Educ. 1970, 47, 403.
Laboratory Equipment / Apparatus
A simple, versatile weighing tube for reactive liquids  Smith, Wayrie L.
Provides a design for a simple, versatile weighing tube for reactive liquids.
Smith, Wayrie L. J. Chem. Educ. 1970, 47, 381.
Laboratory Equipment / Apparatus |
Liquids
A calcium chloride solution, dry-ice, low temperature bath  Bryan, Wilbam P.; Byrne, Robert H.
Investigates the characteristics of a calcium chloride solution, dry-ice, low temperature bath.
Bryan, Wilbam P.; Byrne, Robert H. J. Chem. Educ. 1970, 47, 361.
Laboratory Equipment / Apparatus
Vacuum glassware safety (the author replies)  Krause, Josef G.
Cautions regarding the use of vacuum procedures and apparatus.
Krause, Josef G. J. Chem. Educ. 1970, 47, 323.
Laboratory Management |
Laboratory Equipment / Apparatus
Vacuum glassware safety  Rubinstein, Harry
Cautions regarding the use of vacuum procedures and apparatus.
Rubinstein, Harry J. Chem. Educ. 1970, 47, 323.
Laboratory Management |
Laboratory Equipment / Apparatus
Polyethylene capillary pipets  Melrose, Floyd C.; Lyle, David L.
Presents a method for making long, flexible capillary pipets using ordinary polyethylene tubing.
Melrose, Floyd C.; Lyle, David L. J. Chem. Educ. 1970, 47, 284.
Laboratory Equipment / Apparatus |
Laboratory Management
Ultrathermostat suitable in the range between room temperature and 100C  Meszaros, Lajos
The author describes the development, design, and testing of an ultrathermostat suitable in the range between room temperature and 100C.
Meszaros, Lajos J. Chem. Educ. 1970, 47, 244.
Laboratory Equipment / Apparatus
An inexpensive easy-to-use, safe pipet filler  Spencer, Jesse G.
An inexpensive easy-to-use, safe pipet filler constructed from a rubber bulb and the tip of a polyethylene drying tube.
Spencer, Jesse G. J. Chem. Educ. 1970, 47, 166.
Laboratory Equipment / Apparatus
Multipurpose Electroanalytical Instruments  Ewing, Galen W.
Surveys commercial electroanalytical instrumentation
Ewing, Galen W. J. Chem. Educ. 1969, 46, A717.
Laboratory Equipment / Apparatus |
Electrochemistry
The control of temperature - Part one  van Swaay, Maarten
Examines the design, characteristics, and operation of temperature controlling circuits.
van Swaay, Maarten J. Chem. Educ. 1969, 46, A515.
Laboratory Equipment / Apparatus |
Laboratory Management
Pressure transducers - Part two  Curran, David J.
Surveys commercial capacitive, inductive, and piezoelectric pressure transducers.
Curran, David J. J. Chem. Educ. 1969, 46, A465.
Laboratory Equipment / Apparatus |
Instrumental Methods
Infrared equipment for teaching  Wilks, Paul A., Jr.
Examines the value of infrared analysis, the role of infrared in teaching, and the characteristics of infrared spectrometers.
Wilks, Paul A., Jr. J. Chem. Educ. 1969, 46, A9.
Laboratory Equipment / Apparatus |
IR Spectroscopy |
Spectroscopy
An inexpensive vacuum and gas handling system for the freshman laboratory  Zuehlke, R. W.; Cartier, P. G.
Presents an inexpensive vacuum and gas handling system for the freshman laboratory.
Zuehlke, R. W.; Cartier, P. G. J. Chem. Educ. 1969, 46, 874.
Laboratory Equipment / Apparatus |
Laboratory Management |
Gases
A convenient stencil for glass etching  Alix, Ernest C.
A procedure for etching glass using a mimeograph stencil and hydrofluoric acid.
Alix, Ernest C. J. Chem. Educ. 1969, 46, 863.
Laboratory Equipment / Apparatus |
Laboratory Management
Storage of scientific glassware in polyethylene pellets  Haynes, LeRoy W.; Beyerle, Elmer B.
The use of polyethylene pellets for the storage of scientific glassware in laboratory bench drawers.
Haynes, LeRoy W.; Beyerle, Elmer B. J. Chem. Educ. 1969, 46, 853.
Laboratory Management |
Laboratory Equipment / Apparatus
A simple, inexpensive recorder pen  Bragin, J.; Harris, W. C.
A modification to the Perkin-Elmer model 621 infrared pen holder to reduce clogging problems.
Bragin, J.; Harris, W. C. J. Chem. Educ. 1969, 46, 850.
Laboratory Equipment / Apparatus |
IR Spectroscopy
A simple method for recording with a conventional analytical balance  Charles, R. G.
Presents a simple and inexpensive device, based an a small Hall-effect transducer, for recording with an analytical balance.
Charles, R. G. J. Chem. Educ. 1969, 46, 787.
Magnetic Properties |
Laboratory Equipment / Apparatus
A strong and inexpensive glass-to-metal seal  Benson, John E.; Garten, Robert L.
Short note on the use of epoxy cement as a strong and inexpensive glass-to-metal seal.
Benson, John E.; Garten, Robert L. J. Chem. Educ. 1969, 46, 766.
Laboratory Equipment / Apparatus |
Laboratory Management
A simple, inexpensive zone extractor for preparative thin-layer chromatography  Kan, G.; Snieckus, V.
This short note presents the design of a simple, inexpensive zone extractor for preparative thin-layer chromatography.
Kan, G.; Snieckus, V. J. Chem. Educ. 1969, 46, 763.
Chromatography |
Separation Science |
Laboratory Equipment / Apparatus
Simple vacuum monitor  Harbulak, Edward P.; Valayil, Silvester P.
A simple vacuum monitor can be easily constructed from a hypodermic syringe.
Harbulak, Edward P.; Valayil, Silvester P. J. Chem. Educ. 1969, 46, 739.
Laboratory Equipment / Apparatus |
Laboratory Management
Apparatus for the purification and crystal growth of organic compounds  Gravatt, C. C.; Gross, Paul M.
This article present to pieces of equipment. The first has proven useful for the purification of organic solids melting between 25 and 300C by zone refining. The second is used for the growth of single organic crystals from solution.
Gravatt, C. C.; Gross, Paul M. J. Chem. Educ. 1969, 46, 693.
Laboratory Equipment / Apparatus |
Crystals / Crystallography
Electrolytic preparation of iodoform  Helle, K.; Rijks, J. A.; Janssen, L. J. J.; Schuyl, J. W.
This short note describes a simplified method for the production of iodoform.
Helle, K.; Rijks, J. A.; Janssen, L. J. J.; Schuyl, J. W. J. Chem. Educ. 1969, 46, 518.
Electrochemistry |
Synthesis |
Laboratory Equipment / Apparatus |
Laboratory Management
A semi-micro filtration apparatus  Kocon, Richard W.
An inexpensive vacuum filtration apparatus that combines the features of small surface area in the filter, rapid passage of solution through the filter, and concentration of the filtrate in a relatively small area.
Kocon, Richard W. J. Chem. Educ. 1969, 46, 516.
Laboratory Equipment / Apparatus |
Microscale Lab |
Separation Science
Degassing samples of low volatility  Rondeau, Roger E.
Presents a device and procedure for degassing liquid samples with low volatility.
Rondeau, Roger E. J. Chem. Educ. 1969, 46, 504.
Laboratory Equipment / Apparatus |
Liquids |
Gases
Apparatus for the addition of suspensions or solids to a reaction mixture  de Groot, A.; Hovius, K.
This short note diagrams and describes the use of an apparatus for the addition of suspensions or solids to a reaction mixture.
de Groot, A.; Hovius, K. J. Chem. Educ. 1969, 46, 498.
Laboratory Equipment / Apparatus |
Laboratory Management
A jig for making styrofoam molecular models  Conard, C. R.; Bent, H. E.
This jig allows holes to be produced quickly in spheres of many different sizes.
Conard, C. R.; Bent, H. E. J. Chem. Educ. 1969, 46, 492.
Laboratory Equipment / Apparatus |
Molecular Modeling
Teflon enclosed steel spiral as column packing  Greenberg, Fred H.
Using steel wire enclosed in Teflon in place of a tantalum wire spiral as fractionating column packing.
Greenberg, Fred H. J. Chem. Educ. 1969, 46, 464.
Laboratory Equipment / Apparatus |
Separation Science
An automatic curve reading device  O'Kane, K. C.; Jurinski, N. B.
Presents a method of using a test scoring machine to read numerical values from graphical input data.
O'Kane, K. C.; Jurinski, N. B. J. Chem. Educ. 1969, 46, 460.
Laboratory Equipment / Apparatus |
Spectroscopy
Teflon mixing vial for handling solids for infrared spectroscopy  Clarke, Michael J.; Venezky, David L.
Presents a Teflon mixing vial for handling solids for infrared spectroscopy that eliminates the introduction of polystyrene into infrared samples.
Clarke, Michael J.; Venezky, David L. J. Chem. Educ. 1969, 46, 458.
Laboratory Equipment / Apparatus |
IR Spectroscopy |
Spectroscopy
Integrated circuits in the instrumental laboratory  Scherer, George A.
A brief introduction to integrated circuits that exemplifies their use in instrumentation through the construction of a square wave generator, audio amplifier, decimal counting unit, and operational amplifier.
Scherer, George A. J. Chem. Educ. 1969, 46, 399.
Laboratory Equipment / Apparatus |
Instrumental Methods |
Semiconductors
Apparatus for electrodeposition experiments  Atkinson, G. F.; Shaw, John H.
Presents an alternative to commercial instruments for the electrodeposition of copper and lead from brass samples.
Atkinson, G. F.; Shaw, John H. J. Chem. Educ. 1969, 46, 387.
Electrochemistry |
Laboratory Equipment / Apparatus
Qualitative transfer device for volatile liquids  Giza, Chester A.
Design for a simple, easily made device for qualitative transfer of low-boiling or very volatile liquids.
Giza, Chester A. J. Chem. Educ. 1969, 46, 289.
Laboratory Equipment / Apparatus |
Liquids
A simple safety device for unattended laboratory heating  DeJarlais, W. J.
Presents a design for a device for unattended laboratory heating.
DeJarlais, W. J. J. Chem. Educ. 1969, 46, 286.
Laboratory Equipment / Apparatus
A quick-mounting sample holder for infrared work  Brady, Leonard E.; Wozny, John
An improved retaining plate for holding Nujol mulls.
Brady, Leonard E.; Wozny, John J. Chem. Educ. 1969, 46, 272.
IR Spectroscopy |
Laboratory Equipment / Apparatus
A portable steam bath  Roswell, D. F.; Miller, M. P.; Zaczek, N. M.
Describes a portable steam bath heated by an immersion heater.
Roswell, D. F.; Miller, M. P.; Zaczek, N. M. J. Chem. Educ. 1969, 46, 236.
Laboratory Equipment / Apparatus
A convenient glass-to-glass connector  Collins, Kenneth E.
Describes two modifications of a glass-to-glass O-ring coupling design that can be made easily and cheaply by a glassworker.
Collins, Kenneth E. J. Chem. Educ. 1969, 46, 179.
Laboratory Equipment / Apparatus
Photochemical fume hoods: Design and construction  Stenberg, Virgil I.
Describes the features of a fume hood designed especially for photochemical use.
Stenberg, Virgil I. J. Chem. Educ. 1969, 46, 176.
Laboratory Equipment / Apparatus |
Laboratory Management |
Photochemistry
Inexpensive linear temperature programmer for gas chromatography  Hautala, E.; Weaver, M. L.
Describes the use of a capacitance-operated relay as a linear temperature programmer for gas chromatography.
Hautala, E.; Weaver, M. L. J. Chem. Educ. 1969, 46, 122.
Laboratory Equipment / Apparatus |
Gas Chromatography
A convenient method for sealing metallic wires into glass tubing  Vijh, A. K.; Alwitt, R. S.
A convenient method for sealing metallic wires into glass tubing is afforded by a special, heat-shrinkable, two-layered Teflon tubing.
Vijh, A. K.; Alwitt, R. S. J. Chem. Educ. 1969, 46, 121.
Laboratory Equipment / Apparatus
A simple method for preparing spherical metal electrodes  Sharpe, Thomas F.; Meibuhr, Stuart G.
Describes a simple method for preparing spherical metal electrodes.
Sharpe, Thomas F.; Meibuhr, Stuart G. J. Chem. Educ. 1969, 46, 103.
Laboratory Equipment / Apparatus
Air pollution studies: The ring oven technique  West, Philip W.; Sachdev, Sham L.
Describes the use of the ring oven technique in air pollution studies.
West, Philip W.; Sachdev, Sham L. J. Chem. Educ. 1969, 46, 96.
Atmospheric Chemistry |
Laboratory Equipment / Apparatus
Inexpensive spot plate  Woelfel, Warren C.
Describes constructing disposable spot plates from Parafilm.
Woelfel, Warren C. J. Chem. Educ. 1969, 46, 56.
Laboratory Equipment / Apparatus
A simple, inexpensive shaking apparatus  Burger, Lawrence J.; Taber, Richard L.
This simple, inexpensive shaking apparatus is powered by a common stirring motor.
Burger, Lawrence J.; Taber, Richard L. J. Chem. Educ. 1969, 46, 39.
Laboratory Equipment / Apparatus
Safety shut-off for water-cooled devices  Bailey, R. A.; El-Guindy, M.; Tangredi, W.; Walden, J. A.
This note describes an easily constructed device that will automatically shut off electrical heating or other equipment in the absence of water flow.
Bailey, R. A.; El-Guindy, M.; Tangredi, W.; Walden, J. A. J. Chem. Educ. 1969, 46, 30.
Laboratory Equipment / Apparatus
Reflectometers, colorimeters, and reflectance attachments - Part one  Wendlandt, Wesley W.
Examines commercial reflectance attachments.
Wendlandt, Wesley W. J. Chem. Educ. 1968, 45, A861.
Instrumental Methods |
Laboratory Equipment / Apparatus
Oscilloscopes in chemistry - Part two  Nelson, Joseph E.
Examines the triggered oscilloscope, pug-in amplifiers, special oscilloscopes, and their applications.
Nelson, Joseph E. J. Chem. Educ. 1968, 45, A787.
Instrumental Methods |
Laboratory Equipment / Apparatus
Modern laboratory balances (concluded). Part one - Lever-arm balances (cont'd). Part two - Strain balances. Part three - Recording and automatic balances  Hirsch, Roland F.
Examines a series of modern laboratory balances, including lever-arm, strain balances, recording, and automatic balances.
Hirsch, Roland F. J. Chem. Educ. 1968, 45, A7.
Instrumental Methods |
Laboratory Equipment / Apparatus
Apparatus for determining vapor density  Uglum, K. L.; Carson, L. M.; Riley, R. V.
Presents a simplified vapor-density experiment suitable for use as a freshman demonstration or an undergraduate physical chemistry experiment.
Uglum, K. L.; Carson, L. M.; Riley, R. V. J. Chem. Educ. 1968, 45, 203.
Gases |
Laboratory Equipment / Apparatus |
Physical Properties
Liquid nitrogen level control  Andrew, John T. S.; Current, Jerry H.
This short not presents a circuit diagram for a simple liquid nitrogen level control device.
Andrew, John T. S.; Current, Jerry H. J. Chem. Educ. 1968, 45, 803.
Liquids |
Laboratory Equipment / Apparatus
A dual range direct current power supply for student use  Mowery, Dwight F., Jr.
Presents a design for and the performance of a dual range direct current power supply for student use.
Mowery, Dwight F., Jr. J. Chem. Educ. 1968, 45, 739.
Laboratory Equipment / Apparatus |
Electrochemistry
Low temperature recrystallization tube  Giese, Roger
Presents a low temperature recrystallization tube that eliminates problems with other designs and procedures.
Giese, Roger J. Chem. Educ. 1968, 45, 610.
Laboratory Equipment / Apparatus
Elimination of leaks in spherical joints  Krulfeld, M.
This short note suggests the use of O-rings to prevent leaks in spherical ground-glass joints without grease.
Krulfeld, M. J. Chem. Educ. 1968, 45, 540.
Laboratory Equipment / Apparatus |
Laboratory Management
An apparatus for large-scale sublimation  Walter, Robert I.
Presents an apparatus that is faster than the standard cold-finger type apparatus for vacuum sublimation.
Walter, Robert I. J. Chem. Educ. 1968, 45, 538.
Laboratory Equipment / Apparatus |
Physical Properties
A wing top water spreader  Montecalvo, Donald F.; Jacques, Donald F.
Short note on a simple device to increase the efficiency of the condensate collecting flask on a Buchler Rotary Evaporator.
Montecalvo, Donald F.; Jacques, Donald F. J. Chem. Educ. 1968, 45, 479.
Laboratory Equipment / Apparatus |
Physical Properties
An inexpensive, inert thermocouple probe  Meiser, John H.
An inexpensive, wide temperature range probe can be made easily from 1/8 inch stainless steel tubing commonly used for gas chromatography.
Meiser, John H. J. Chem. Educ. 1968, 45, 476.
Laboratory Equipment / Apparatus
A mercury dispenser  Duedall, Iver W.
Presents a design for a simple mercury dispenser.
Duedall, Iver W. J. Chem. Educ. 1968, 45, 393.
Laboratory Equipment / Apparatus
A simple and accurate dilatometer for liquids  Wagner, Robert E.; Meyer, Edwin F.
The density of a liquid as a function of temperature may be readily measured using this dilatometer.
Wagner, Robert E.; Meyer, Edwin F. J. Chem. Educ. 1968, 45, 349.
Laboratory Equipment / Apparatus |
Liquids |
Physical Properties
An inexpensive sprayer for chromatography  DeThomas, Anthony V.; Pascual, Francis
This short note presents a simple and inexpensive sprayer for paper and thin-layer chromatography.
DeThomas, Anthony V.; Pascual, Francis J. Chem. Educ. 1968, 45, 321.
Laboratory Equipment / Apparatus |
Chromatography |
Separation Science
Modified electrode kit  Gard, Walter F.
Presents modifications to a commercial electrode kit that extends its use to two- and three-electrode polarographic work.
Gard, Walter F. J. Chem. Educ. 1968, 45, 275.
Electrochemistry |
Laboratory Equipment / Apparatus
Spring attenuator for infrared spectrophotometers  Cichorz, R. S.; Van Atta, R. E.
Presents the design of an attenuator capable of decreasing the reference beam intensity of an infrared spectrophotometer without reducing the slit width at the same time.
Cichorz, R. S.; Van Atta, R. E. J. Chem. Educ. 1968, 45, 271.
Laboratory Equipment / Apparatus |
IR Spectroscopy |
Spectroscopy
A convenient solution and solvent dispenser  Chen, Phillip S.
This short note describes a convenient solution and solvent dispenser that relies on a modified separatory funnel.
Chen, Phillip S. J. Chem. Educ. 1968, 45, 128.
Laboratory Equipment / Apparatus |
Solutions / Solvents
A simple laboratory shock absorber  Jones, Jerry L.; Fritsche, Herbert A., Jr.
A short note on using an old automobile inner tube to reduce the vibration of sensitive equipment.
Jones, Jerry L.; Fritsche, Herbert A., Jr. J. Chem. Educ. 1968, 45, 117.
Laboratory Equipment / Apparatus |
Laboratory Management
A micro filter  Lloyd, Winston D.
Describes an inexpensive micro filter that can be assembled by the student.
Lloyd, Winston D. J. Chem. Educ. 1968, 45, 115.
Laboratory Equipment / Apparatus |
Microscale Lab
Apparatus for measuring spectra of oxygen-sensitive reactions  Lalor, G. C.
This method is particularly suited for quantitative measurement of the absorption spectrum of a product that can be formed by mixing to reactant solutions.
Lalor, G. C. J. Chem. Educ. 1968, 45, 90.
Spectroscopy |
Laboratory Equipment / Apparatus |
Quantitative Analysis
Recent developments in calorimetry. Part 3. Some specific types of calorimeters (conclusion)  Wilhoit, Randolph C.
Examines the topics of solution calorimetry, microcalorimetry, dynamic calorimetry, and the instrumentation used to conduct these analyses.
Wilhoit, Randolph C. J. Chem. Educ. 1967, 44, A853.
Calorimetry / Thermochemistry |
Instrumental Methods |
Laboratory Equipment / Apparatus
Recent developments in calorimetry: Part two. Some associated measurements (cont.)  Wilhoit, Randolph C.
Examines the measurement of electricity, calorimetric standards, solution calorimetry, and specific types of calorimeters.
Wilhoit, Randolph C. J. Chem. Educ. 1967, 44, A685.
Calorimetry / Thermochemistry |
Instrumental Methods |
Laboratory Equipment / Apparatus
Explosion-proof electrical equipment  Ehrenkranz, T. E.
Details the hazardous location classifications for electrical equipment of the National Electrical Code.
Ehrenkranz, T. E. J. Chem. Educ. 1967, 44, A601.
Laboratory Equipment / Apparatus |
Laboratory Management
Recent developments in calorimetry. Part 1. Introductory survey of calorimetry  Wilhoit, Randolph C.
Explores the scope and purpose of calorimetric investigation, types of calorimeters, areas of calorimetric investigation and the procedures and calculations involved.
Wilhoit, Randolph C. J. Chem. Educ. 1967, 44, A571.
Calorimetry / Thermochemistry |
Instrumental Methods |
Laboratory Equipment / Apparatus
Modern laboratory balances  Hirsch, Roland F.
Examines the theory behind the operation of lever-arm balances and their methods of operation.
Hirsch, Roland F. J. Chem. Educ. 1967, 44, A1023.
Instrumental Methods |
Laboratory Equipment / Apparatus
Avoiding parallax error when reading a mercury manometer  Carroll, H. L.
This short note describes a simple method employing graph paper to avoid parallax error when reading a mercury manometer.
Carroll, H. L. J. Chem. Educ. 1967, 44, 763.
Instrumental Methods |
Laboratory Equipment / Apparatus
Evaporative distillation assembly  Giese, Roger
A short note diagramming the construction of an evaporative distillation assembly.
Giese, Roger J. Chem. Educ. 1967, 44, 690.
Laboratory Equipment / Apparatus |
Phases / Phase Transitions / Diagrams
Recyclization apparatus for esterification  Naff, M. Benton; Naff, Anna S.
Describes an apparatus and procedure involved in preparing and distilling n-butyl acetate.
Naff, M. Benton; Naff, Anna S. J. Chem. Educ. 1967, 44, 680.
Laboratory Equipment / Apparatus |
Esters
Construction of an inexpensive desiccator  Birdwhistell, R. K.
A short note on a simple desiccator made from a jar and electrical conduit.
Birdwhistell, R. K. J. Chem. Educ. 1967, 44, 667.
Laboratory Equipment / Apparatus
A simple distillation apparatus  Fenster, A. N.
This short note presents a modified Kugelrohr-type short-path distillation apparatus.
Fenster, A. N. J. Chem. Educ. 1967, 44, 660.
Phases / Phase Transitions / Diagrams |
Laboratory Equipment / Apparatus
Accurate measurement of gas volumes by a soap-film method  Hello, O.
The measurement of small gas volumes can be greatly improved by using the soap-film apparatus described in this article.
Hello, O. J. Chem. Educ. 1967, 44, 568.
Laboratory Equipment / Apparatus |
Gases
Letter to the editor  Jadd, Eugene C.
Describes the Teflon tubing "Flo-Tite."
Jadd, Eugene C. J. Chem. Educ. 1967, 44, 486.
Laboratory Equipment / Apparatus |
Laboratory Management
The ultrasonic cleaner in the laboratory  Robertson, William B.
The ultrasonic cleaner is indispensable in the laboratory or glass shop.
Robertson, William B. J. Chem. Educ. 1967, 44, 460.
Laboratory Equipment / Apparatus |
Laboratory Management
A continuous gas-mixing apparatus  Bultman, J. D.; Hannan, P. J.
Describes a continuous gas-mixing apparatus that allows gas mixtures of any desired concentration to be generated directly from tanks of compressed gas.
Bultman, J. D.; Hannan, P. J. J. Chem. Educ. 1967, 44, 424.
Laboratory Equipment / Apparatus |
Gases
A thermostatic bath for temperatures between 90 and 300K  Wood, T. Aylmer
Describes a simple, precisely controlled, variable temperature bath for gaseous adsorption studies.
Wood, T. Aylmer J. Chem. Educ. 1967, 44, 423.
Laboratory Equipment / Apparatus |
Gases
Automatic temperature control  Patton, J. W.
Provides a diagram for an automatic temperature control circuit.
Patton, J. W. J. Chem. Educ. 1967, 44, 422.
Laboratory Equipment / Apparatus
Diffusion-seal desiccator for student use  Turk, Amos; Turk, Jonathan
Describes an inexpensive desiccator that dispenses with the usual hermetic seal.
Turk, Amos; Turk, Jonathan J. Chem. Educ. 1967, 44, 421.
Laboratory Equipment / Apparatus
A simple stand for the determination of alpha particle range  Borke, Mitchell L.
This short note describes a simple stand for the determination of alpha particle range and energy.
Borke, Mitchell L. J. Chem. Educ. 1967, 44, 390.
Nuclear / Radiochemistry |
Laboratory Equipment / Apparatus
The rest point of the balance  Hakala, Reino W.
Elaborates on the formula for finding the rest point of a balance.
Hakala, Reino W. J. Chem. Educ. 1967, 44, 306.
Laboratory Equipment / Apparatus
A laboratory method for teflon-to-glass connections  Krulfeld, M.
Describes a method of connecting Teflon tubing to glass or silica.
Krulfeld, M. J. Chem. Educ. 1967, 44, 303.
Laboratory Equipment / Apparatus
Liquid-liquid extraction  Joseph-Nathan, P.
Describes how liquid-liquid extraction can be done using commercially available substances and an apparatus of small dimensions that still allows an experiment to be followed visually.
Joseph-Nathan, P. J. Chem. Educ. 1967, 44, 176.
Separation Science |
Liquids |
Laboratory Equipment / Apparatus
A new short-path distillation apparatus  Morrison, Harry
This design is basically a modification of the kugelrohr method but was created to surmount difficulties in cooling the receiver and removing the distillant.
Morrison, Harry J. Chem. Educ. 1967, 44, 161.
Laboratory Equipment / Apparatus |
Phases / Phase Transitions / Diagrams
An automatic distillation apparatus  Hinton, J. F.; Than, A.; Amis, E. S.
Presents a design for an automatic distillation apparatus capable of handling large amounts of liquid.
Hinton, J. F.; Than, A.; Amis, E. S. J. Chem. Educ. 1967, 44, 112.
Laboratory Equipment / Apparatus |
Phases / Phase Transitions / Diagrams
Application of binary and ternary arithmetic to weighing problems  Lang, Sidney B.; Peck, Robert L.
The purpose of this paper is to illustrate some of the advantages of using a ternary system of weights on a two-pan balance and a binary system on a single-pan balance.
Lang, Sidney B.; Peck, Robert L. J. Chem. Educ. 1967, 44, 48.
Laboratory Equipment / Apparatus
Construction of an inexpensive constant temperature device  Walsh, Brother Joseph M.
Presents a design for a simple constant temperature device.
Walsh, Brother Joseph M. J. Chem. Educ. 1967, 44, 29.
Laboratory Equipment / Apparatus
Enamine reactions for the undergraduate organic laboratory: A student water separator  Darling, S. D.
This note describes the design and efficiency of a device that facilitates the removal of water in reactions such as enamine preparation or esterfications.
Darling, S. D. J. Chem. Educ. 1966, 43, 665.
Laboratory Equipment / Apparatus |
Amines / Ammonium Compounds |
Esters |
Synthesis |
Separation Science
A simple variable speed wavelength drive  Harrison, W. W.; Norvelle, A. W., Jr.
Describes a simple variable speed wavelength drive designed for use with a Beckman DU.
Harrison, W. W.; Norvelle, A. W., Jr. J. Chem. Educ. 1966, 43, 598.
Laboratory Equipment / Apparatus |
Instrumental Methods
A radiochemical experiment in gas chromatography  Merrigan, J. A.; Nicholas, J. B.; Rack, E. P.
This article presents a method for building a radiogaschromatograph from materials generally available in a radiochemistry laboratory, and an experiment using this chromatograph that illustrates Szilard-Chalmers effects, energies associated with nuclear transformations, and characteristics of the chromatograph.
Merrigan, J. A.; Nicholas, J. B.; Rack, E. P. J. Chem. Educ. 1966, 43, 543.
Nuclear / Radiochemistry |
Gas Chromatography |
Laboratory Equipment / Apparatus
Improvements in the Victor-Meyer  Bader, Morris
Two improvements in the Victor-Meyer have simplified the apparatus and greatly increased the accuracy of molecular weight determinations.
Bader, Morris J. Chem. Educ. 1966, 43, 500.
Laboratory Equipment / Apparatus |
Molecular Properties / Structure
Letter to the editor  Radimer, K. J.
Describes a device to produce a range of constant liquid flows.
Radimer, K. J. J. Chem. Educ. 1966, 43, 446.
Laboratory Equipment / Apparatus
The labstand: A successor to the ring stand  Rinquist, Olaf; Runquist, Alfonse; Senkler, George
A vertical pegboard replaces conventional ring stands.
Rinquist, Olaf; Runquist, Alfonse; Senkler, George J. Chem. Educ. 1966, 43, 444.
Laboratory Equipment / Apparatus
Porous glass salt bridges  Durst, Richard A.
Describes the characteristics and applications of porous glass salt bridges.
Durst, Richard A. J. Chem. Educ. 1966, 43, 437.
Laboratory Equipment / Apparatus |
Electrochemistry
Discarded "IV" bottles are useful  Ostrander, Charles
Discarded "IV" bottles are useful for dispensing solutions and reduce the chances of contamination.
Ostrander, Charles J. Chem. Educ. 1966, 43, 379.
Laboratory Equipment / Apparatus |
Solutions / Solvents
Preventing spillage when pouring mercury  Carlton, Terry S.
A glass adapter of the type used in distillations has proved effective in preventing spillage during mercury transfers.
Carlton, Terry S. J. Chem. Educ. 1966, 43, 320.
Laboratory Equipment / Apparatus |
Laboratory Management
Electrical conductance apparatus  Steinberg, Edwin E.; Nordmann, J.
A circuit diagram for an electrical conductance apparatus that is safe, accurate, and allows for qualitative measurements.
Steinberg, Edwin E.; Nordmann, J. J. Chem. Educ. 1966, 43, 309.
Electrochemistry |
Conductivity |
Laboratory Equipment / Apparatus
Coulometry: A series experiment  Van Lente, K. A.
In this experiment Faraday's Laws are applied to three coulometers - a silver coulometer, an iodine coulometer, and a gas coulometer - all connected in series.
Van Lente, K. A. J. Chem. Educ. 1966, 43, 306.
Electrochemistry |
Laboratory Equipment / Apparatus
Closed system stirring apparatus  Ostroff, A. G.
Described here is a simple device for stirring closed systems.
Ostroff, A. G. J. Chem. Educ. 1966, 43, 266.
Laboratory Equipment / Apparatus
Versatile magnetic stirrer and flexible coupler  Warkentin, J.
Describes a versatile magnetic stirrer and flexible coupler connected to a vacuum line that can be used to determine reaction rates by monitoring gas volume as a function of time.
Warkentin, J. J. Chem. Educ. 1966, 43, 265.
Laboratory Equipment / Apparatus |
Kinetics |
Rate Law
A versatile continuous percolator-extractor  Ciereszko, Leon S.
An apparatus that may be used either for the continuous percolation of solids or for the continuous extraction of liquids is presented.
Ciereszko, Leon S. J. Chem. Educ. 1966, 43, 252.
Laboratory Equipment / Apparatus |
Separation Science |
Solids |
Liquids
Short-range manometer  Miller, N. E.
Presents a design for an inexpensive, rugged, and accurate short-range manometer.
Miller, N. E. J. Chem. Educ. 1966, 43, 244.
Laboratory Equipment / Apparatus
Constant rate gas generator  Asakura, Shizuo
By reversing the usual procedure of a Kipp generator and dropping the liquid reagent onto the solid, a constant flow of gas may be obtained.
Asakura, Shizuo J. Chem. Educ. 1966, 43, 203.
Gases |
Laboratory Equipment / Apparatus
Instructional NMR instrument  Proffitt, Michael H.; Gardiner, W. C., Jr.
Presents circuit diagrams for the components of an instructional NMR instrument.
Proffitt, Michael H.; Gardiner, W. C., Jr. J. Chem. Educ. 1966, 43, 152.
NMR Spectroscopy |
Instrumental Methods |
Laboratory Equipment / Apparatus
Letter to the editor  Kruh, Daniel
Points out a possible alternative to multiple prolonged underwater magnetic stirrers in a constant temperature system.
Kruh, Daniel J. Chem. Educ. 1966, 43, 46.
Laboratory Equipment / Apparatus
Flexible gas cells for infrared spectroscopy  Carter, K. N.
A useful and inexpensive gas cell with salt windows can be easily made from a polyethylene bag.
Carter, K. N. J. Chem. Educ. 1966, 43, 9.
IR Spectroscopy |
Spectroscopy |
Laboratory Equipment / Apparatus
Instrumentation for micrometry and microscopyPart Five  Lewin, S. Z.
Examines double-imaging, surface profile, and standards microscopes, as well as oculars, body tubes, objectives, and stages.
Lewin, S. Z. J. Chem. Educ. 1965, 42, A945.
Instrumental Methods |
Laboratory Equipment / Apparatus
Instrumentation for micrometry and microscopyPart four  Lewin, S. Z.
Examines types of compound microscopes and micrometer-equiped microscopes.
Lewin, S. Z. J. Chem. Educ. 1965, 42, A853.
Instrumental Methods |
Laboratory Equipment / Apparatus
Design and construction of glass vacuum systemsConcluded  Rondeau, Roger E.
Examines the transfer of gases, vacuum gauges, glass seals, break seals, manifolds, cold traps, and high vacuum stopcocks.
Rondeau, Roger E. J. Chem. Educ. 1965, 42, A511.
Laboratory Equipment / Apparatus |
Gases
Emergency exhaust ventilation  Steere, Norman V.
Considers laboratory safety design standards and chemical safety in biological laboratories.
Steere, Norman V. J. Chem. Educ. 1965, 42, A464.
Laboratory Equipment / Apparatus |
Laboratory Management
Lasers and masersControl of health hazards  Daniels, Roswell G.; Goldstein, Bernard L.
Considers laser and maser emissions, variable factors in tissue, variables of beam characteristics, environmental considerations, and the need for control over radiation hazards.
Daniels, Roswell G.; Goldstein, Bernard L. J. Chem. Educ. 1965, 42, A182.
Lasers |
Laboratory Equipment / Apparatus |
Laboratory Management
Luminous gas light sources  Lewin, S. Z.
Examines luminous gas behavior, glow discharge tubes, high intensity glow discharge lamps, electronic flask tubes, and arc discharge lamps.
Lewin, S. Z. J. Chem. Educ. 1965, 42, A165.
Gases |
Instrumental Methods |
Laboratory Equipment / Apparatus
The rest point of the balance  Crawford, Crayton M.
This paper offers a new method for determining the rest point of a balance.
Crawford, Crayton M. J. Chem. Educ. 1965, 42, 669.
Laboratory Equipment / Apparatus
Student potentiometer using a zener diode  Atkinson, George F.
Presents a circuit diagram for a student potentiometer using a zener diode.
Atkinson, George F. J. Chem. Educ. 1965, 42, 656.
Laboratory Equipment / Apparatus |
Electrochemistry
Improvised melting point apparatus  Rogers, F. E.
A simple substitute for the Fisher-Johns melting point apparatus can be improvised using Wood's alloy.
Rogers, F. E. J. Chem. Educ. 1965, 42, 619.
Laboratory Equipment / Apparatus |
Phases / Phase Transitions / Diagrams
Multiple remote magnetic stirring device  Miller, Bernard
Presents the design of a multiple remote magnetic stirring device.
Miller, Bernard J. Chem. Educ. 1965, 42, 617.
Laboratory Equipment / Apparatus
Melting point techniques for volatile mixtures  Wilcox, W. R.
Describes two techniques for avoiding volatilization while taking melting points of small quantities of a mixture.
Wilcox, W. R. J. Chem. Educ. 1965, 42, 616.
Laboratory Equipment / Apparatus |
Phases / Phase Transitions / Diagrams
An inexpensive immersion heater for an oil bath  Ault, Addison
A short note on an inexpensive immersion heater for an oil bath made from a resistor.
Ault, Addison J. Chem. Educ. 1965, 42, 603.
Laboratory Equipment / Apparatus
Safety gas washing bottle and gas safety valve  Molau, G. E.; Keller, R. T.
Presents a new design of a safety gas washing bottle in which the principle of the Kipp gas generator is combined with the principle of a gas washing bottle.
Molau, G. E.; Keller, R. T. J. Chem. Educ. 1965, 42, 563.
Gases |
Laboratory Equipment / Apparatus
Electronic timer for the study of electron transfer reactions  Stephens, J. F.; Chakrabarty, M. R.
Studies of rapid kinetic processes by a quenching method necessitated the construction of electronic timing devices, capable of pumping reacting solutions into a vessel and introducing a quenching solution at desired time intervals.
Stephens, J. F.; Chakrabarty, M. R. J. Chem. Educ. 1965, 42, 562.
Laboratory Equipment / Apparatus |
Reactions
Apparatus for preparations and filtrations under inert, dry conditions  Holah, D. G.
The equipment described here presents an easily constructed and versatile means for carrying out reactions and filtrations under inert conditions.
Holah, D. G. J. Chem. Educ. 1965, 42, 561.
Laboratory Equipment / Apparatus
An automatic mercury still  Low, Manfred J. D.; Abrams, L.
The automatic vacuum still described here is useful for the continuous distillation of mercury for use in a variety of equipment.
Low, Manfred J. D.; Abrams, L. J. Chem. Educ. 1965, 42, 557.
Laboratory Equipment / Apparatus
An economical laboratory safety shield  Lutz, W. B; Gehres, D. W.
A laminated safety sheet available at automotive glass dealers is used as an economical laboratory safety shield.
Lutz, W. B; Gehres, D. W. J. Chem. Educ. 1965, 42, 535.
Laboratory Equipment / Apparatus
A sensitive inexpensive thermometer  Slabaugh, W. H.
Presents a circuit diagram for a simple thermistor.
Slabaugh, W. H. J. Chem. Educ. 1965, 42, 467.
Laboratory Equipment / Apparatus |
Calorimetry / Thermochemistry
Simple devices aid laboratory efficiency  Baker, Wilbur L.
Pictures of a sink strainer, balance cover, buret storage rack, and self-leveling buret support feet.
Baker, Wilbur L. J. Chem. Educ. 1965, 42, 457.
Laboratory Equipment / Apparatus
Letters  Robertson, R. E.
Describes a safe solution to problems with squeeze bottles containing high vapor pressure liquids.
Robertson, R. E. J. Chem. Educ. 1965, 42, 457.
Laboratory Equipment / Apparatus |
Liquids
Flame-ionization detector for gas chromatography  Hughes, D. E. P.
Describes the design of an extremely sensitive and readily visible flame-ionization detector for gas chromatography.
Hughes, D. E. P. J. Chem. Educ. 1965, 42, 450.
Chromatography |
Gas Chromatography |
Laboratory Equipment / Apparatus
A simple high frequency transistor recorder for chromatography  Jackson, A.
Describes the design and operation of a simple high frequency transistor recorder for chromatography.
Jackson, A. J. Chem. Educ. 1965, 42, 447.
Laboratory Equipment / Apparatus |
Chromatography |
Separation Science
Automatic fraction collector for column chromatography  Herbener, R. E.
This article describes the construction of an automatically timed fraction collector for use with chromatographic columns.
Herbener, R. E. J. Chem. Educ. 1965, 42, 445.
Chromatography |
Separation Science |
Laboratory Equipment / Apparatus
The laboratory ringstand problem and the UCLA solution  Robertson, G. Ross
Efforts to improve upon the standard laboratory ringstand.
Robertson, G. Ross J. Chem. Educ. 1965, 42, 399.
Laboratory Equipment / Apparatus
Semi-micro vapor density apparatus: A rapid technique  Svec, Harry J.; Peterson, Norman C.
The authors have developed a rapid technique to determine the molecular weight of 5 to 15 microliters of a volatile compound with a precision of about +/- 2%.
Svec, Harry J.; Peterson, Norman C. J. Chem. Educ. 1965, 42, 336.
Microscale Lab |
Laboratory Equipment / Apparatus
A versatile bubbler valve  Bissey, Jack Edwin
This device was developed to control nitrogen pressure as gas is admitted to a vacuum system.
Bissey, Jack Edwin J. Chem. Educ. 1965, 42, 317.
Laboratory Equipment / Apparatus |
Gases |
Laboratory Management
Standard taper lab-kit for undergraduate organic chemistry  Darling, S. D.; Brown, R. F.
Describes a standard taper lab-kit for undergraduate organic chemistry.
Darling, S. D.; Brown, R. F. J. Chem. Educ. 1965, 42, 280.
Laboratory Equipment / Apparatus
A boiling point apparatus for organic laboratories  Wright, Oscar L.
A rather simple but effective ebulliometer can be built by anyone with a minimum of glass-blowing ability.
Wright, Oscar L. J. Chem. Educ. 1965, 42, 259.
Laboratory Equipment / Apparatus
A simple float valve for maintaining the water level of a bath at elevated temperatures  Thacker, Raymond
Presents a simple float valve for maintaining the water level of a bath at temperatures close to 100C despite evaporation.
Thacker, Raymond J. Chem. Educ. 1965, 42, 215.
Laboratory Equipment / Apparatus
Several designs for constructing potentiometers  Battino, Rubin
This paper describes several designs for constructing inexpensive potentiometers that possess a practical degree of precision.
Battino, Rubin J. Chem. Educ. 1965, 42, 211.
Electrochemistry |
Instrumental Methods |
Laboratory Equipment / Apparatus
A gas scrubber for eliminating noxious vapors  Goddard, Charles; Henry, Malcolm C.
Presents an apparatus for preventing the escape of undesirable materials into the air.
Goddard, Charles; Henry, Malcolm C. J. Chem. Educ. 1965, 42, 136.
Gases |
Laboratory Equipment / Apparatus
Letter to the editor  Uebele, Curtis E.
Describes a simple method by which the effectiveness of magnetic stir bars may be greatly improved in solutions containing an undissolved solid.
Uebele, Curtis E. J. Chem. Educ. 1965, 42, 48.
Laboratory Equipment / Apparatus
Modular instrumentation in analytical chemistry  Ewing, Galen W.
It is the purpose of this paper to describe an approach to modular instrumentation in analytical chemistry in which students complete the assembly of partially assembled instruments.
Ewing, Galen W. J. Chem. Educ. 1965, 42, 32.
Instrumental Methods |
Laboratory Equipment / Apparatus
Eye protection in laboratories  Steere, Norman V.
Reviews requirements for and issues related to eye protection in laboratories.
Steere, Norman V. J. Chem. Educ. 1964, 41, A936.
Laboratory Equipment / Apparatus |
Laboratory Management
Instrumentation teaching equipment. Part one: Optical devices (continued)  Eisner, Leonard
Examines lasers used as instrumental teaching equipment.
Eisner, Leonard J. Chem. Educ. 1964, 41, A551.
Instrumental Methods |
Lasers |
Laboratory Equipment / Apparatus
An improvised steam bath  Kaye, I. A.
Presents a design for a simple, inexpensive, and easily constructed heating bath.
Kaye, I. A. J. Chem. Educ. 1964, 41, 669.
Laboratory Equipment / Apparatus
Storage of scientific glassware in polystyrene  Hunter, I. R.; Walden, M. K.
Suggests preparing a foamed polystyrene sheet for the storage of laboratory glassware.
Hunter, I. R.; Walden, M. K. J. Chem. Educ. 1964, 41, 667.
Laboratory Equipment / Apparatus |
Laboratory Management
A simple direct current source for the laboratory  de Ita, Odon Sanchez; Urquiza, Manual
Presents a simple apparatus for the conversion of ac to dc.
de Ita, Odon Sanchez; Urquiza, Manual J. Chem. Educ. 1964, 41, 655.
Laboratory Equipment / Apparatus
Nonvoiding plastic squeeze bottles  Harber, W. I.
A simple modification eliminates the problem of voiding in plastic squeeze bottles.
Harber, W. I. J. Chem. Educ. 1964, 41, 653.
Laboratory Equipment / Apparatus
A simple method of coating with polyethylene  Anderson, H. L.; Jones, F. R.; Wood, R. H.
Describes a process for coating metal containers (aluminum, copper, and stainless steel) with a thin layer of relatively inert polyethylene.
Anderson, H. L.; Jones, F. R.; Wood, R. H. J. Chem. Educ. 1964, 41, 638.
Laboratory Equipment / Apparatus |
Laboratory Management
Hinged plate flask support  McAchran, Gerald E.
This brief note describes a simple alternative to a conventional iron ring.
McAchran, Gerald E. J. Chem. Educ. 1964, 41, 632.
Laboratory Equipment / Apparatus
Adaptation of a Sargent polarograph to a pen recording instrument  Haas, J. W., Jr.
This brief note describes the adaptation of a Sargent polarograph to a pen recording instrument.
Haas, J. W., Jr. J. Chem. Educ. 1964, 41, 632.
Laboratory Equipment / Apparatus |
Instrumental Methods
A constant-level device for water baths  Harlan, H. D.
A brief note regarding the application of a siphon as a constant-level device for water baths.
Harlan, H. D. J. Chem. Educ. 1964, 41, 614.
Laboratory Equipment / Apparatus
Pedestal for a substitution-type balance  Weaver, E. C.; Foster, Laurence S.
Presents a sturdy pedestal for a substitution-type balance that eliminates vibrations.
Weaver, E. C.; Foster, Laurence S. J. Chem. Educ. 1964, 41, 514.
Laboratory Equipment / Apparatus
Method for the determination of liquid-vapor binary equilibria  Colgate, S. O.; Hanrahan, R. J.
In the method described here, which is a modification of the refluxing procedure, provision is made for collecting samples of both condensed vapor and liquid without disturbing the equilibrium.
Colgate, S. O.; Hanrahan, R. J. J. Chem. Educ. 1964, 41, 433.
Equilibrium |
Liquids |
Gases |
Laboratory Equipment / Apparatus
An inexpensive photochemical reactor  Starr, J. Edward; Eastman, Richard H.
The study of photolytic reactions can be readily and effectively carried out using this inexpensive and easily constructed photolysis apparatus.
Starr, J. Edward; Eastman, Richard H. J. Chem. Educ. 1964, 41, 394.
Laboratory Equipment / Apparatus |
Photochemistry
A versatile cell for electrochemical measurements  Feldman, L.; Kuhn, A. T.
Presents a versatile cell for electrochemical measurements whose basic component is a five-necked Pyrex flask.
Feldman, L.; Kuhn, A. T. J. Chem. Educ. 1964, 41, 390.
Electrochemistry |
Electrolytic / Galvanic Cells / Potentials |
Laboratory Equipment / Apparatus
A convenient apparatus for small scale ozonizations  Rubin, Mordecai B.
Describes a convenient apparatus for small scale ozonizations.
Rubin, Mordecai B. J. Chem. Educ. 1964, 41, 388.
Laboratory Equipment / Apparatus
A constant-level oil-bath melting point apparatus  Powell, H. B.; Mellon, E. K., Jr.; Burow, D. F.
Presents a modification of the Theile-Denis melting point apparatus.
Powell, H. B.; Mellon, E. K., Jr.; Burow, D. F. J. Chem. Educ. 1964, 41, 345.
Laboratory Equipment / Apparatus |
Phases / Phase Transitions / Diagrams |
Physical Properties
Construction of a simple refractometer: A chemical instrumentation experiment  Coe, Gordon R.; Conlon, Ralph D.; Dessy, Raymond E.
The construction of a simple refractometer can be used as an experiment to teach basic concepts of instrumentation.
Coe, Gordon R.; Conlon, Ralph D.; Dessy, Raymond E. J. Chem. Educ. 1964, 41, 337.
Instrumental Methods |
Laboratory Equipment / Apparatus
The history of the Warburg apparatus: Some reminiscences on its use  Oesper, Peter
The Warburg apparatus is a device for measuring the pressure of a gas at constant volume and constant temperature so that the pressure is a measure of the quantity of gas and changes in pressure reflect the production or absorption of gas.
Oesper, Peter J. Chem. Educ. 1964, 41, 294.
Laboratory Equipment / Apparatus |
Gases
A versatile and inexpensive controlled potential polarographic analyzer  Enke, C. G.; Baxter, R. A.
The instrument described in this article was built to be used for basic research in nonaqueous and ac polarography and for instruction in polarographic principles and techniques in introductory and advanced analytical chemistry laboratories.
Enke, C. G.; Baxter, R. A. J. Chem. Educ. 1964, 41, 202.
Instrumental Methods |
Electrochemistry |
Laboratory Equipment / Apparatus
A demonstration device for gas chromatography  Herbener, R. E.
This paper describes the construction and use of a simple gas chromatograph with removable covers for class demonstrations.
Herbener, R. E. J. Chem. Educ. 1964, 41, 162.
Laboratory Equipment / Apparatus |
Separation Science |
Gas Chromatography
Laboratory jack: Apparatus for undergraduate laboratories  Cordes, A. W.
Suggests use of a modified automobile jack.
Cordes, A. W. J. Chem. Educ. 1964, 41, 130.
Laboratory Equipment / Apparatus
Using variable voltage transformers to control heaters  Battino, Rubin
Presents a graph relating the wattage (heat output) to the voltage applied to a heater.
Battino, Rubin J. Chem. Educ. 1964, 41, 104.
Laboratory Equipment / Apparatus |
Laboratory Management
A convenient micro filter-stick  Cooper, Paul D.
This brief note describes a device that can serve to replace conventional sintered filter-sticks.
Cooper, Paul D. J. Chem. Educ. 1964, 41, 85.
Laboratory Equipment / Apparatus |
Microscale Lab
A constant current source for student use  Mann, C. K.
Suggests constructing a constant current source as described in the cited article.
Mann, C. K. J. Chem. Educ. 1963, 40, A986.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis
A temperature sensitive stirring rod  Eddy, R. D.
Provides suggestions for research based on an earlier published article.
Eddy, R. D. J. Chem. Educ. 1963, 40, A186.
Undergraduate Research |
Laboratory Equipment / Apparatus
Uses for rubber eye-dropper bulbs  Markowitz, Meyer M.; Boryta, Daniel A.
These simple diagrams present seven inventive uses for rubber eye-dropper bulbs.
Markowitz, Meyer M.; Boryta, Daniel A. J. Chem. Educ. 1963, 40, 482.
Laboratory Equipment / Apparatus
An inexpensive spectrograph of moderately high resolution  Schoenbeck, Ralph; Tabbutt, Frederick D.
This article describes a spectrograph with a resolving power greater than 6000 that can easily be built for a minimal cost.
Schoenbeck, Ralph; Tabbutt, Frederick D. J. Chem. Educ. 1963, 40, 452.
Spectroscopy |
Instrumental Methods |
Laboratory Equipment / Apparatus
A simple pressure stopcock  Gilmont, Roger
Describes the modification of a standard stopcock into a pressure stopcock.
Gilmont, Roger J. Chem. Educ. 1963, 40, 432.
Laboratory Equipment / Apparatus
A simple closed end manometer  Trumbull, Elmer R.
Presents the design for a simple closed end manometer that minimizes spillage of mercury.
Trumbull, Elmer R. J. Chem. Educ. 1963, 40, 350.
Laboratory Equipment / Apparatus
Modification of a vacuum desiccator  Head, E. L.; Pavone, D.
A simple device has been constructed to eliminate the difficulty normally encountered in the removal of vacuum desiccator lids.
Head, E. L.; Pavone, D. J. Chem. Educ. 1963, 40, 316.
Laboratory Equipment / Apparatus
A gas saturation apparatus  Shatzberg, Paul
Presents a simple apparatus for saturating air with water or, more generally, gases with liquids.
Shatzberg, Paul J. Chem. Educ. 1963, 40, 267.
Gases |
Laboratory Equipment / Apparatus
A thermistor actuated proportional temperature controller  Milligan, Barton
Presents the design of a thermistor actuated proportional temperature controller employing only solid-state devices.
Milligan, Barton J. Chem. Educ. 1963, 40, 263.
Laboratory Equipment / Apparatus
Device for measuring temperature in a closed rotating flask  Lubbs, Eugene K.
Presents a simple thermocouple for measuring temperature in a closed rotating flask.
Lubbs, Eugene K. J. Chem. Educ. 1963, 40, 200.
Laboratory Equipment / Apparatus
Letters to the editor  Verbit, Lawrence P.
The author warns that only seamless Teflon-covered stirring bars should be used at elevated temperatures and reduced pressures.
Verbit, Lawrence P. J. Chem. Educ. 1963, 40, 92.
Laboratory Equipment / Apparatus
A glass electrode pH meter using a vacuum tube voltmeter  Brower, Harold E.
A simple pH meter can be constructed using a vacuum tube voltmeter.
Brower, Harold E. J. Chem. Educ. 1963, 40, 85.
pH |
Laboratory Equipment / Apparatus |
Aqueous Solution Chemistry |
Instrumental Methods
Beam protective device for an automatic analytical balance  Vollmer, Robert
Describes a device that will emit an audible signal if the door of an analytical balance is raised with the beam in an unarrested position.
Vollmer, Robert J. Chem. Educ. 1963, 40, 77.
Laboratory Equipment / Apparatus
Separatory funnel for successive extraction of the heavier phase  Hanrahan, Robert J.
Presents a double separatory funnel for re-extraction of the heavier phase.
Hanrahan, Robert J. J. Chem. Educ. 1963, 40, 69.
Laboratory Equipment / Apparatus |
Separation Science
Constant current power supply  Svec, Harry J.; Peterson, Norman C.
Provides a circuit diagram for a constant current power supply.
Svec, Harry J.; Peterson, Norman C. J. Chem. Educ. 1963, 40, 37.
Laboratory Equipment / Apparatus
Thin layer chromatography apparatus  Hansbury, Elizabeth; Ott, D. G.; Perrings, J. D.
Describes the preparation of the grooved plate and adsorbent layer for a simple and inexpensive, thin layer chromatography apparatus.
Hansbury, Elizabeth; Ott, D. G.; Perrings, J. D. J. Chem. Educ. 1963, 40, 31.
Thin Layer Chromatography |
Chromatography |
Laboratory Equipment / Apparatus
Instrumentation based on operational amplifiers (Part II)  Reilley, C. N.
Examines standard voltage sources, differential operational amplifiers, consecutive circuits, and the solution of equations through op amp circuitry.
Reilley, C. N. J. Chem. Educ. 1962, 39, A933.
Instrumental Methods |
Laboratory Equipment / Apparatus
Experiments and equipment for teaching chemical instrumentation  Tabbutt, Frederick D.
Examines a variety of instruments and their application in an instrumental course.
Tabbutt, Frederick D. J. Chem. Educ. 1962, 39, 611.
Instrumental Methods |
Laboratory Equipment / Apparatus
A laboratory blower-dryer  Naff, M. Benton
Describes the construction of a simple hot-air blower.
Naff, M. Benton J. Chem. Educ. 1962, 39, 601.
Laboratory Equipment / Apparatus
Letters  Cohen, Irwin
Identifies three additional, independent reports on polyethylene cells for infrared spectra.
Cohen, Irwin J. Chem. Educ. 1962, 39, 595.
IR Spectroscopy |
Spectroscopy |
Laboratory Equipment / Apparatus
Letters  Naiman, Barnet
Suggests small vials modified to hold eyedroppers to weigh samples of a volatile liquid accurately.
Naiman, Barnet J. Chem. Educ. 1962, 39, 594.
Laboratory Equipment / Apparatus
A large capacity laboratory extraction apparatus  Diaper, Dennis G. M.; Kuksis, Arnis
Presents a non-commercial design for a large capacity, Soxhlet extractor.
Diaper, Dennis G. M.; Kuksis, Arnis J. Chem. Educ. 1962, 39, 532.
Laboratory Equipment / Apparatus |
Separation Science
Simplified atomic absorption spectrophotometer  Rechnitz, Garry A.
This paper presents a simple atomic absorption spectrophotometer that can be constructed from inexpensive and readily available components.
Rechnitz, Garry A. J. Chem. Educ. 1962, 39, 475.
Spectroscopy |
Atomic Spectroscopy |
Laboratory Equipment / Apparatus |
Instrumental Methods
Technique for infrared measurements on solutions of moisture-sensitive compounds  Duckworth, Martin W.; Fowles, Gerald W. A.
Presents a device and method for infrared measurements on solutions of moisture-sensitive compounds.
Duckworth, Martin W.; Fowles, Gerald W. A. J. Chem. Educ. 1962, 39, 474.
Spectroscopy |
IR Spectroscopy |
Laboratory Equipment / Apparatus
A simple inexpensive glove box  Shore, Sheldon G.
Presents a design for a simple and inexpensive glove box that relies on the use of a polyethylene bag.
Shore, Sheldon G. J. Chem. Educ. 1962, 39, 465.
Laboratory Equipment / Apparatus |
Gases
An efficient and inexpensive inert gas chamber  Ocone, L. R.; Simkin, Joseph
Describes a plastic bag modified for use as an efficient and inexpensive inert gas chamber.
Ocone, L. R.; Simkin, Joseph J. Chem. Educ. 1962, 39, 463.
Gases |
Laboratory Equipment / Apparatus
Portable down-draft table for lecture experiments  Campbell, J. A.; Hollenberg, J. Leland
Presents a designed for a portable down-draft table for lecture experiments requiring the ventilation of noxious products.
Campbell, J. A.; Hollenberg, J. Leland J. Chem. Educ. 1962, 39, 422.
Laboratory Equipment / Apparatus
An X-Y recorder for reading a meter: A photoelectric scanning device  Drake, G. Wilson; Johnston, C. B.
Describes the design and operation of an automatic photoelectric scanning device that serves as an X-Y recorder.
Drake, G. Wilson; Johnston, C. B. J. Chem. Educ. 1962, 39, 314.
Laboratory Equipment / Apparatus |
Instrumental Methods
A semimicro Kipp apparatus  Polya, J. B.
Presents a design for a semimicro Kipp apparatus.
Polya, J. B. J. Chem. Educ. 1962, 39, 295.
Laboratory Equipment / Apparatus |
Gases
Microchemical applications of the H-flask  Polya, J. B.
Illustrates and describes the microchemical applications of the H-flask.
Polya, J. B. J. Chem. Educ. 1962, 39, 294.
Laboratory Equipment / Apparatus |
Microscale Lab
Perforated board mounting for semimicro set-ups  Beech, J. A.
Presents a semimicro mounting system that is versatile and portable.
Beech, J. A. J. Chem. Educ. 1962, 39, 293.
Laboratory Equipment / Apparatus |
Microscale Lab
Observations of molecular behavior in cold traps  Morrow, J. I.; Turk, Amos; Kaplan, Bruce E.
describes the operation of a modified cold trap.
Morrow, J. I.; Turk, Amos; Kaplan, Bruce E. J. Chem. Educ. 1962, 39, 263.
Laboratory Equipment / Apparatus
Disposable polyethylene cells for infrared spectra  Cohen, Irwin
Describes the use of very thin polyethylene to support infrared samples.
Cohen, Irwin J. Chem. Educ. 1962, 39, 262.
IR Spectroscopy |
Laboratory Equipment / Apparatus
A convenient laboratory sublimation apparatus  Mallory, Frank B.
Reduced-pressure sublimation can eliminate many of the problems involved in purification through recrystallization.
Mallory, Frank B. J. Chem. Educ. 1962, 39, 261.
Laboratory Equipment / Apparatus |
Phases / Phase Transitions / Diagrams
A funnel for the controlled addition of solids  Bloomfield, Jordan J.; Nunamaker, Harry
Describes an addition funnel for solids based on the use of a Teflon screw to deliver solids at any desired rate to a reaction.
Bloomfield, Jordan J.; Nunamaker, Harry J. Chem. Educ. 1962, 39, 255.
Laboratory Equipment / Apparatus
A student preparation of butyl ether  Smith, William B.
This preparation uses a Dean-Stark tube to separate water from the reaction mixture as it is formed.
Smith, William B. J. Chem. Educ. 1962, 39, 212.
Ethers |
Synthesis |
Laboratory Equipment / Apparatus
A convenient and safe method for the evaporation of organic solvents  Kamphausen, H. A.
Solutions of a wide variety of organic compounds in common organic solvents have been evaporated to dryness rapidly and safely with this apparatus.
Kamphausen, H. A. J. Chem. Educ. 1962, 39, 208.
Laboratory Equipment / Apparatus
A rotating tubular reactor  Markowitz, Meyer M.; Boryta, Daniel A.
Presents a simple design for a rotating tubular reactor to achieve efficient interaction between a solid and a gas.
Markowitz, Meyer M.; Boryta, Daniel A. J. Chem. Educ. 1962, 39, 122.
Laboratory Equipment / Apparatus |
Reactions |
Solids |
Gases
Disposable aluminum weighing dishes  Houston, David F.
Describes the production of aluminum weighing dishes of varying sizes from aluminum foil.
Houston, David F. J. Chem. Educ. 1962, 39, 101.
Laboratory Equipment / Apparatus
Filter-pipets  Rapoport, Morris; Hancock, C. Kinney
This short note describes the use of filter-pipets to separate solid particles from supernatant solutions.
Rapoport, Morris; Hancock, C. Kinney J. Chem. Educ. 1962, 39, 98.
Laboratory Equipment / Apparatus
Countercurrent distribution: Apparatus for a simple experiment  Verzele, M.; Schamp, N.
Presents an apparatus and its application to perform a countercurrent distribution.
Verzele, M.; Schamp, N. J. Chem. Educ. 1962, 39, 97.
Laboratory Equipment / Apparatus |
Separation Science |
Liquids
Magnetic stirrer for large volumes  Markowitz, Meyer M.; Boryta, Daniel A.
A horseshoe magnet is adapted for use as a magnetic stirrer.
Markowitz, Meyer M.; Boryta, Daniel A. J. Chem. Educ. 1962, 39, 96.
Laboratory Equipment / Apparatus
Locating ultraviolet-absorbing substances on paper chromatography  Katz, Sam
Describes a simple device for scanning paper chromatographs that is a version of the Haines apparatus and is suitable for classroom use.
Katz, Sam J. Chem. Educ. 1962, 39, 34.
Chromatography |
Laboratory Equipment / Apparatus
Nuclear Radiation Detectors  Lewin, S. Z.
Examines electroscopes, ion chambers, Geiger-Mueller counters, scintillation detectors, and the voltage characteristics of detectors.
Lewin, S. Z. J. Chem. Educ. 1961, 38, A135.
Nuclear / Radiochemistry |
Laboratory Equipment / Apparatus |
Instrumental Methods
A titration controller for demonstrating the behavior of acid-base indicators  Stock, John T.
Presents a circuit diagram for a device that permits the automatic back-and-forth titration with acid and alkali of a solution containing an appropriate indicator.
Stock, John T. J. Chem. Educ. 1961, 38, 633.
Acids / Bases |
Aqueous Solution Chemistry |
Titration / Volumetric Analysis |
Laboratory Equipment / Apparatus |
Instrumental Methods |
Quantitative Analysis
Device to convert a hypodermic syringe into a multi-purpose apparatus  Shapiro, Samuel
Summarizes several ways in which hypodermic syringes can be used in the laboratory.
Shapiro, Samuel J. Chem. Educ. 1961, 38, 626.
Laboratory Equipment / Apparatus
Adapting hospital "castoffs" for use in a chemistry laboratory  Martinette, Sister Mary B. V. M.; Crowell, Sister Agnita D. C.
A short note on the use of discarded hospital bottles in the chemistry laboratory.
Martinette, Sister Mary B. V. M.; Crowell, Sister Agnita D. C. J. Chem. Educ. 1961, 38, 619.
Laboratory Equipment / Apparatus
A teflon bearing for stirrers  Kaplan, M. L.; Crocker, R. E.; Sargent, Herbert
Describes a stirrer bearing assembly that can be operated at high speeds for long durations without additional lubrication.
Kaplan, M. L.; Crocker, R. E.; Sargent, Herbert J. Chem. Educ. 1961, 38, 577.
Laboratory Equipment / Apparatus
Safety device for vacuum diffusion pumps  Pritchard, G. O.; Miller, G. H.
This device ensures a continuous stream of coolant water for pumps in a vacuum system.
Pritchard, G. O.; Miller, G. H. J. Chem. Educ. 1961, 38, 525.
Laboratory Equipment / Apparatus
A low cost direct current source for the laboratory  Barnard, W. Robert.; Woodriff, Ray
Presents a low cost source of variable direct current.
Barnard, W. Robert.; Woodriff, Ray J. Chem. Educ. 1961, 38, 521.
Laboratory Equipment / Apparatus |
Electrochemistry
A constant current source for student use  Mann, Charles K.; Champeaux, Vernel C.
Describes a controlled current power supply suitable for coulometric and potentiometric titrations, chronopotentiometry, and current scanning polarography.
Mann, Charles K.; Champeaux, Vernel C. J. Chem. Educ. 1961, 38, 519.
Laboratory Equipment / Apparatus |
Electrochemistry |
Titration / Volumetric Analysis
Simplified moving-boundary transference cell  Tobey, Stephen W.
Presents a transference cell for determining cation transference numbers by the moving boundary method.
Tobey, Stephen W. J. Chem. Educ. 1961, 38, 516.
Laboratory Equipment / Apparatus |
Aqueous Solution Chemistry |
Solutions / Solvents
Substitute for separatory funnels  Jean, Marcel
A modified polyethylene wash bottle can make a convenient substitute for a separatory funnel.
Jean, Marcel J. Chem. Educ. 1961, 38, 515.
Laboratory Equipment / Apparatus
Temperature and power measurements in precision solution calorimetry  O'Hara, William F.; Wu, Ching-Hsien; Hepler, Loren G.
Presents the design of a calorimetric apparatus, and accompanying circuit schematic, and their application to calorimetry measurements.
O'Hara, William F.; Wu, Ching-Hsien; Hepler, Loren G. J. Chem. Educ. 1961, 38, 512.
Calorimetry / Thermochemistry |
Laboratory Equipment / Apparatus
An inexpensive versatile multi-column gas chromatograph for students  Sicilio, F.; Bull, H., III; Palmer, R. C.; Knight, J. A.
Presents the design of a multi-column, gas chromatography unit constructed from common laboratory materials.
Sicilio, F.; Bull, H., III; Palmer, R. C.; Knight, J. A. J. Chem. Educ. 1961, 38, 506.
Gas Chromatography |
Separation Science |
Gases |
Instrumental Methods |
Laboratory Equipment / Apparatus
An inexpensive coulometer for titrations with externally generated reagents  Head, William F., Jr.; Marsh, Max M.
Describes the design and use of an inexpensive coulometer for titrations with externally generated reagents.
Head, William F., Jr.; Marsh, Max M. J. Chem. Educ. 1961, 38, 361.
Instrumental Methods |
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis
Apparatus for the Friedel-Crafts reaction: For the undergraduate organic chemistry laboratory  Kremer, Chester B.; Wilen, Samuel H.
A simple and practical reaction apparatus has been designed that offers several advantages over earlier set-ups.
Kremer, Chester B.; Wilen, Samuel H. J. Chem. Educ. 1961, 38, 306.
Laboratory Equipment / Apparatus |
Electrophilic Substitution
Laboratory heating bath using fluidized solid  Manes, Milton; Chalmers, David G.
The laboratory heating bath described herein combines the high temperature limit of the traditional sand bath with the good heat transfer and temperature uniformity of fluidized beds.
Manes, Milton; Chalmers, David G. J. Chem. Educ. 1961, 38, 102.
Laboratory Equipment / Apparatus
Spectrophotometers (cont'd)  Lewin, S. Z.
Examines the various components and operating characteristics of the Beckman Model DU.
Lewin, S. Z. J. Chem. Educ. 1960, 37, A455.
Spectroscopy |
Instrumental Methods |
Laboratory Equipment / Apparatus
Spectrophotometers  Lewin, S. Z.
Examines the important components and operating characteristics of spectrophotometers.
Lewin, S. Z. J. Chem. Educ. 1960, 37, A401.
Instrumental Methods |
Laboratory Equipment / Apparatus
Photometers and colorimeters (cont'd)  Lewin, S. Z.
Examines vacuum phototube photometers, photomultiplier tube photometers, instruments for color specification, and tristmulus colorimetry.
Lewin, S. Z. J. Chem. Educ. 1960, 37, A271.
Instrumental Methods |
Laboratory Equipment / Apparatus
A constant temperature reaction vessel for the thermal decomposition of solids  Prout, E. G.; Herley, P. J.
Describes an apparatus suitable for studying the thermal decomposition of potassium permanganate in high vacuum.
Prout, E. G.; Herley, P. J. J. Chem. Educ. 1960, 37, 643.
Laboratory Equipment / Apparatus |
Solids |
Rate Law |
Kinetics
Line-operated constant voltage supplies for recorders and potentiometers  Thomas, E. B.; Nook, R. J.
Transistors, operated as diodes, may be used as zener diodes to regulate D.C. constant voltage supplies with low current requirements.
Thomas, E. B.; Nook, R. J. J. Chem. Educ. 1960, 37, 641.
Laboratory Equipment / Apparatus |
Semiconductors
Water equivalent of vacuum flask calorimeter by the ice fusion method  Dunicz, Boleslaw Ludwik
Presents the design of a vacuum flask calorimeter and describes the determination of its water equivalent by the ice fusion method.
Dunicz, Boleslaw Ludwik J. Chem. Educ. 1960, 37, 635.
Calorimetry / Thermochemistry |
Laboratory Equipment / Apparatus
A convenient device for the evaporation of solvents  Sprinkzak, Yair
Presents the design of a device attached to a rotatory evaporator.
Sprinkzak, Yair J. Chem. Educ. 1960, 37, 606.
Laboratory Equipment / Apparatus |
Separation Science |
Solutions / Solvents
Letters  Bretherick, L.
The author notes that he had previously developed a flexible vacuum flask connection.
Bretherick, L. J. Chem. Educ. 1960, 37, 602.
Laboratory Equipment / Apparatus
Method for attaching glass, water aspirators to water lines  Perrine, Theodore D.
Describes the attachment of glass aspirators to water pipelines by means of metal pipe bushings.
Perrine, Theodore D. J. Chem. Educ. 1960, 37, 481.
Laboratory Equipment / Apparatus
A universal azeotropic water separator  Balasubrahmanyam, S. N.
Describes the design and construction of a universal azeotropic water separator.
Balasubrahmanyam, S. N. J. Chem. Educ. 1960, 37, 475.
Laboratory Equipment / Apparatus |
Water / Water Chemistry
Letters  Lebowitz, William
Comments on the preferred method for cleaning laboratory glassware.
Lebowitz, William J. Chem. Educ. 1960, 37, 437.
Laboratory Equipment / Apparatus |
Laboratory Management
A useful glass-blowing lathe for small equipment  Bonner, William A.
This brief note describes a useful glass-blowing lathe for small equipment.
Bonner, William A. J. Chem. Educ. 1960, 37, 402.
Laboratory Equipment / Apparatus
An aid to weighing by swings  Stock, John T.; Fill, M. A.
To get maximum balance performance, weighing must be done by the method of swings; presented here is an electromagnetic device to facilitate controlled swings.
Stock, John T.; Fill, M. A. J. Chem. Educ. 1960, 37, 366.
Laboratory Equipment / Apparatus |
Physical Properties
An inexpensive electric cork boring machine  Barnard, W. Robert
This short note describes an inexpensive electric cork boring machine modified from a household drill.
Barnard, W. Robert J. Chem. Educ. 1960, 37, 334.
Laboratory Equipment / Apparatus
Building a high-frequency titrator for instructional use  Clinkscales, J. K., Jr.; Frye, Herschel
Describes the design and operating characteristics of a high-frequency titrator for instructional use.
Clinkscales, J. K., Jr.; Frye, Herschel J. Chem. Educ. 1960, 37, 304.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis |
Quantitative Analysis |
Instrumental Methods
Acceleration of flash distillation  Kasman, Sidney.; Rubin, L. E.
The rate of flash distillation can be accelerated through a simple modification.
Kasman, Sidney.; Rubin, L. E. J. Chem. Educ. 1960, 37, 292.
Laboratory Equipment / Apparatus
Removable vacuum connectors for filter flasks  Doty, W. R.
This brief note describes a removable vacuum connector for filter flasks.
Doty, W. R. J. Chem. Educ. 1960, 37, 292.
Laboratory Equipment / Apparatus
A simple, inexpensive rotary film evaporator  Arnett, Edward M.
Presents a design for a simple, inexpensive rotary film evaporator.
Arnett, Edward M. J. Chem. Educ. 1960, 37, 247.
Laboratory Equipment / Apparatus
A semiautomatic polarograph: A low cost instrument for student use  Drake, G. Wilson; Johnston, C. B.
Presents the design of a semiautomatic polarograph suitable for introductory analytical chemistry.
Drake, G. Wilson; Johnston, C. B. J. Chem. Educ. 1960, 37, 240.
Laboratory Equipment / Apparatus |
Instrumental Methods
A demonstration polarimeter  Spear, Carleton S.
Describes the construction of a simple polarimeter that can be constructed by students for use in laboratory experiments.
Spear, Carleton S. J. Chem. Educ. 1960, 37, 203.
Laboratory Equipment / Apparatus |
Instrumental Methods
A simplified bomb for hydrothermal synthesis  Plumley, Arthur L.
Details the construction of a simplified bomb for hydrothermal synthesis.
Plumley, Arthur L. J. Chem. Educ. 1960, 37, 201.
Laboratory Equipment / Apparatus |
Calorimetry / Thermochemistry |
Synthesis
A thermogravimetric balance for student experiments  Delhez, Robert
Presents the design of a simple, homemade thermobalance.
Delhez, Robert J. Chem. Educ. 1960, 37, 151.
Gravimetric Analysis |
Laboratory Equipment / Apparatus
Vessel for small-scale reactions  Kasman, Sidney
This brief note describes a modified test tube that allows a thermometer to be used to measure temperature changes involved in the reaction of very small amounts of material.
Kasman, Sidney J. Chem. Educ. 1960, 37, 150.
Laboratory Equipment / Apparatus
An inexpensive apparatus for solubility measurements  Schmitt, Robert H.; Grove, E. L.
This brief note describes an inexpensive apparatus for solubility measurements.
Schmitt, Robert H.; Grove, E. L. J. Chem. Educ. 1960, 37, 150.
Laboratory Equipment / Apparatus |
Precipitation / Solubility |
Instrumental Methods
Apparatus for handling liquefied gases  Badgett, James M., Jr.; Stansbury, Harry A., Jr.
A simple, safe, and useful apparatus has been constructed to facilitate the liquefaction, measurement, and feeding of low-boiling gases in laboratory experiments.
Badgett, James M., Jr.; Stansbury, Harry A., Jr. J. Chem. Educ. 1960, 37, 43.
Gases |
Laboratory Equipment / Apparatus
Vacuum pumps (continued)  Lewin, S. Z.
Examines a variety of commercial vacuum pumps.
Lewin, S. Z. J. Chem. Educ. 1959, 36, A433.
Laboratory Equipment / Apparatus
Vacuum pumps  Lewin, S. Z.
Examines the physical principles and operating characteristics of vacuum pumps.
Lewin, S. Z. J. Chem. Educ. 1959, 36, A391.
Laboratory Equipment / Apparatus
Centrifuges (continued)  Lewin, S. Z.
Examines a variety of commercial centrifuges.
Lewin, S. Z. J. Chem. Educ. 1959, 36, A337.
Laboratory Equipment / Apparatus
Centrifuges  Lewin, S. Z.
Examines the operating characteristics and components of centrifuges.
Lewin, S. Z. J. Chem. Educ. 1959, 36, A269.
Instrumental Methods |
Laboratory Equipment / Apparatus
Temperature-controlled baths (continued)  Lewin, S. Z.
Examines several commercial, temperature-controlled baths.
Lewin, S. Z. J. Chem. Educ. 1959, 36, A199.
Laboratory Equipment / Apparatus
Temperature-controlled baths  Lewin, S. Z.
Examines control systems, thermoregulators, heaters, stirrers, and baths.
Lewin, S. Z. J. Chem. Educ. 1959, 36, A131.
Laboratory Equipment / Apparatus
Precise coulometric titrations based on silver coulometer measurements  Van Lente, K. A.; van Atta, R. E.; Willard, H. H.
The purpose of this article is to describe a method for coulometric titrations using a different type of silver coulometer and a versatile type of apparatus with which gas evolution causes no trouble.
Van Lente, K. A.; van Atta, R. E.; Willard, H. H. J. Chem. Educ. 1959, 36, 576.
Electrochemistry |
Titration / Volumetric Analysis |
Quantitative Analysis |
Laboratory Equipment / Apparatus
Letters to the editor  Boryta, Daniel
The author offers a suggestion to stop water splashing from aspirator pumps.
Boryta, Daniel J. Chem. Educ. 1959, 36, 530.
Laboratory Management |
Laboratory Equipment / Apparatus
A simple katharometer design  Thomas, Carl O.; Smith, Hilton A.
Presents the design of a simple katharometer that requires no glass work.
Thomas, Carl O.; Smith, Hilton A. J. Chem. Educ. 1959, 36, 527.
Laboratory Equipment / Apparatus |
Gas Chromatography
A modified water rheostat  Yeh, Ping-Yuan; Yu, Chen-Pin
A modified water rheostat is easily constructed from two pieces of glass tubing and copper wire electrodes.
Yeh, Ping-Yuan; Yu, Chen-Pin J. Chem. Educ. 1959, 36, 473.
Laboratory Equipment / Apparatus
A water aspirator hood  Moore, Wilbur D.
Presents the design of a small, localized hood that operates using water aspiration.
Moore, Wilbur D. J. Chem. Educ. 1959, 36, 407.
Laboratory Equipment / Apparatus
A gas testing device using liquids or test papers  Williams, T. R.; Stock, John T.
This simple device facilitates the qualitative testing of gases evolved during small-scale inorganic analysis using liquids or test papers.
Williams, T. R.; Stock, John T. J. Chem. Educ. 1959, 36, 384.
Qualitative Analysis |
Gases |
Laboratory Equipment / Apparatus
A splashless table drain  Smucker, Arthur A.; Weaver, Henry D., Jr.
Presents a design for a splashless table drain.
Smucker, Arthur A.; Weaver, Henry D., Jr. J. Chem. Educ. 1959, 36, 301.
Laboratory Management |
Laboratory Equipment / Apparatus
Glass rod as a stirrer in pH titrations  Venkatachalam, K. A.
This short note describes how a glass rod can be used as a stirrer in potentiometric titrations without interfering with the glass electrode.
Venkatachalam, K. A. J. Chem. Educ. 1959, 36, 301.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis
Letters to the editor  Guenther, William B.
The author questions the continued use of two pan balances in the quantitative analysis course.
Guenther, William B. J. Chem. Educ. 1959, 36, 257.
Laboratory Equipment / Apparatus
A simple universal apparatus for steam distillation  Wallenberger, Frederick T.; O'Connor, William F.; Moriconi, Emil J.
This paper reports on modifications to an earlier apparatus for steam distillation and its operating characteristics with respect to recovering organic products.
Wallenberger, Frederick T.; O'Connor, William F.; Moriconi, Emil J. J. Chem. Educ. 1959, 36, 251.
Laboratory Equipment / Apparatus |
Phases / Phase Transitions / Diagrams
A simple differential fermentograph  Borzani, Walter; Vairo, Marina L. R.
The very simple differential fermentograph described in this report can give good comparative measures of the influence of several factors on the fermentation rate when gases are produced.
Borzani, Walter; Vairo, Marina L. R. J. Chem. Educ. 1959, 36, 242.
Laboratory Equipment / Apparatus |
Gases
A portable semimicro reaction assembly  Stock, John T.; Fill, M. A.
Displays, describes, and itemizes the components of a portable semimicro reaction assembly.
Stock, John T.; Fill, M. A. J. Chem. Educ. 1959, 36, 194.
Laboratory Equipment / Apparatus |
Microscale Lab
A simple valve for burets or chromatographic columns  Harpur, R. P.
A new form of tetrafluoroethylene tubing is employed in a simple valve for burets or chromatographic columns.
Harpur, R. P. J. Chem. Educ. 1959, 36, 149.
Laboratory Equipment / Apparatus
A simple Pyrex-detection system  Thompson, H. Bradford
A simple method for identifying Pyrex glassware.
Thompson, H. Bradford J. Chem. Educ. 1958, 35, 569.
Laboratory Management |
Laboratory Equipment / Apparatus
A boiling point apparatus  Lykos, Peter G.
A one-piece boiling-point apparatus that utilizes Cottrell's principle of spraying the thermometer with boiling liquid is described.
Lykos, Peter G. J. Chem. Educ. 1958, 35, 565.
Laboratory Equipment / Apparatus |
Phases / Phase Transitions / Diagrams
A microreaction block  Schultz, Harry P.
The author has developed an electrically heated reaction block for executing numerous laboratory operations on a micro scale, including distillations, refluxings, sealed tube reactions, sublimations, recrystallizations, drying of analytical samples, and determination of melting points.
Schultz, Harry P. J. Chem. Educ. 1958, 35, 564.
Laboratory Equipment / Apparatus |
Microscale Lab
A laboratory aid to speed-up filtration  Feinstein, H. I.
A laboratory aid to speed-up filtration is constructed from a funnel and an atomizer bulb.
Feinstein, H. I. J. Chem. Educ. 1958, 35, 509.
Laboratory Equipment / Apparatus
An improved magnetic rotation apparatus  Dodd, Thomas N., Jr.
This article is a continuation of an earlier paper describing the design, construction, and operation of an improved magnetic rotation apparatus.
Dodd, Thomas N., Jr. J. Chem. Educ. 1958, 35, 459.
Laboratory Equipment / Apparatus
A new addition apparatus  Scheer, Irving; D'Adamo, Amedeo F., Jr.
This device helps to ease the addition of a solid reagent in small portions to a reaction mixture, particularly reagents that are sensitive to air and moisture.
Scheer, Irving; D'Adamo, Amedeo F., Jr. J. Chem. Educ. 1958, 35, 281.
Laboratory Equipment / Apparatus
Apparatus for semimicro low temperature crystallizations  Bluhm, Aaron L.
An apparatus suitable for the crystallization of small quantities of materials at low temperatures is described.
Bluhm, Aaron L. J. Chem. Educ. 1958, 35, 200.
Laboratory Equipment / Apparatus |
Crystals / Crystallography |
Microscale Lab
Letters  Fieser, Louis F.
Calls attention to a stopperless separatory funnel design.
Fieser, Louis F. J. Chem. Educ. 1958, 35, 48.
Laboratory Equipment / Apparatus
A simple flow indicator  Apice, P. J.
A simple flow indicator can be easily constructed with a small piece of glass tubing and a few inches of wire.
Apice, P. J. J. Chem. Educ. 1958, 35, 33.
Laboratory Equipment / Apparatus
An improved stirrer  Ludwig, Jerome H.; Blatchford, John K.
This short note presents a simple, easily constructed, and rugged stirrer for laboratory use.
Ludwig, Jerome H.; Blatchford, John K. J. Chem. Educ. 1957, 34, 616.
Laboratory Equipment / Apparatus
Student-built spectrofluorometer  Goldstein, Jack M.; McNabb, Wallace M.; Hazel, J. Fred
Presents a student project involving the construction of an inexpensive, practical spectrofluorometer.
Goldstein, Jack M.; McNabb, Wallace M.; Hazel, J. Fred J. Chem. Educ. 1957, 34, 604.
Laboratory Equipment / Apparatus
Letters to the editor  Burnell, R. H.; Sangster, A. W.
Presents a simple apparatus for vacuum filtration.
Burnell, R. H.; Sangster, A. W. J. Chem. Educ. 1957, 34, 574.
Laboratory Equipment / Apparatus
A chromatographic chamber for the student laboratory  Wiggans, Donald S.
The construction of an effective chromatographic tank can be accomplished by means of two beakers.
Wiggans, Donald S. J. Chem. Educ. 1957, 34, 536.
Chromatography |
Separation Science |
Laboratory Equipment / Apparatus
A simplified isoteniscope for vapor pressure measurements  Sternberg, James C.
A modified isoteniscope method has been developed using an isoteniscope that is simple to operate and which the undergraduate can easily assemble himself.
Sternberg, James C. J. Chem. Educ. 1957, 34, 442.
Laboratory Equipment / Apparatus |
Liquids |
Gases
Microchemical apparatus: A long-term project  Stock, John T.
Presents a variety of laboratory devices developed for microscale work, including heating, stirring, electrochemical, and qualitative analysis devices.
Stock, John T. J. Chem. Educ. 1957, 34, 358.
Microscale Lab |
Laboratory Equipment / Apparatus |
Qualitative Analysis |
Electrochemistry
A simple and efficient device for cleaning dropping bottles  Shen, Samuel Yi-Wen
Presents a setup that has been successfully used for the cleaning of dropping bottles.
Shen, Samuel Yi-Wen J. Chem. Educ. 1957, 34, 327.
Laboratory Equipment / Apparatus |
Laboratory Management
A compact low-cost electrodeposition apparatus  Cook, Clarence L.
Briefly describes a compact low-cost electrodeposition apparatus.
Cook, Clarence L. J. Chem. Educ. 1957, 34, 280.
Laboratory Equipment / Apparatus |
Electrochemistry |
Quantitative Analysis |
Instrumental Methods
A portable mixture colorimeter of high absolute accuracy  Mowery, Dwight F., Jr.
The equipment described is designed to provide a more rapid and uniform mixing of solutions, allows the use of equal volumes, and requires only one Beckman thermometer.
Mowery, Dwight F., Jr. J. Chem. Educ. 1957, 34, 244.
Laboratory Equipment / Apparatus |
Instrumental Methods |
Calorimetry / Thermochemistry
An automatic titrator  Phillips, John P.
Describes the design and operation of a photoelectric automatic titrator suitable for demonstrations in elementary quantitative analysis.
Phillips, John P. J. Chem. Educ. 1957, 34, 203.
Laboratory Equipment / Apparatus |
Titration / Volumetric Analysis |
Quantitative Analysis
A combined oscillator, amplifier, and power supply for conductance bridges  Loytty, O. M.; McCarren, E. F., Jr.; Vernon, A. A.
Describes the investigation, development, and operation of a combined oscillator, amplifier, and power supply for conductance bridges.
Loytty, O. M.; McCarren, E. F., Jr.; Vernon, A. A. J. Chem. Educ. 1957, 34, 190.
Laboratory Equipment / Apparatus |
Instrumental Methods
Improvised traps for vacuum lines  Bloom, M.
The improvised trap arrangement described here has the advantage that it does not involve the use of rubber tubing or stoppers and is consequently free of contamination from those sources.
Bloom, M. J. Chem. Educ. 1957, 34, 173.
Laboratory Equipment / Apparatus |
Laboratory Management
A technique for vacuum filtration  Brown, James R.
The method described here permits one to filter with suction directly into a variety of receivers, thus avoiding the need to transfer from a suction flask or to rinse down a filtering adapter.
Brown, James R. J. Chem. Educ. 1957, 34, 165.
Laboratory Equipment / Apparatus
Simple evacuable die for the preparation of potassium bromide discs  White, Emil H.
Provides a description of a simple and reliable evacuable die which can give crystal-clear windows of potassium bromide.
White, Emil H. J. Chem. Educ. 1957, 34, 41.
IR Spectroscopy |
Laboratory Equipment / Apparatus |
Laboratory Management
Heating devices for microchemical operations  Stock, John T.; Fill, M. A.
Two devices provide heating for microchemical operations.
Stock, John T.; Fill, M. A. J. Chem. Educ. 1956, 33, 619.
Laboratory Equipment / Apparatus |
Microscale Lab
An automatic still-head timer  Binder, L. O.
Presents a schematic diagram for an automatic timer.
Binder, L. O. J. Chem. Educ. 1956, 33, 591.
Laboratory Equipment / Apparatus |
Instrumental Methods
Inexpensive apparatus for speedy evaporation  Greef, Frances; Larsen, Clifford T.
A rotary film type of evaporator has been constructed from materials available in the laboratory.
Greef, Frances; Larsen, Clifford T. J. Chem. Educ. 1956, 33, 556.
Laboratory Equipment / Apparatus |
Phases / Phase Transitions / Diagrams
The recording potentiometer: Its use in the analytical chemistry laboratory  Ewing, Galen W.
Reviews types of recording potentiometers and their applications in the analytical chemistry laboratory.
Ewing, Galen W. J. Chem. Educ. 1956, 33, 424.
Instrumental Methods |
Laboratory Equipment / Apparatus
A gas-density balance for student use  Werner, A. E.
Describes a gas-density balance robust enough for student use
Werner, A. E. J. Chem. Educ. 1956, 33, 393.
Gases |
Laboratory Equipment / Apparatus |
Instrumental Methods
A reduced-scale Lassaigne technique: The detection of nitrogen, sulfur, and halogens in organic compounds  Stock, John T.
Presents apparatus that makes use of a reduced-scale Lassaigne technique involving fusion with metallic sodium for the detection of nitrogen, sulfur, and halogens in organic compounds.
Stock, John T. J. Chem. Educ. 1956, 33, 345.
Qualitative Analysis |
Laboratory Equipment / Apparatus
Notes on the lyophilization technique  Devor, Arthur W.; Titchener, Edward B.; Andr, Charles E.; Frajola, Walter J.
Presents a simple apparatus for demonstrating freeze-drying.
Devor, Arthur W.; Titchener, Edward B.; Andr, Charles E.; Frajola, Walter J. J. Chem. Educ. 1956, 33, 343.
Laboratory Equipment / Apparatus
A constant-level water bath for the student laboratory  Slagle, James R.; Wendlandt, Wesley W.
Presents the design of a very simple, constant-level water bath for the student laboratory.
Slagle, James R.; Wendlandt, Wesley W. J. Chem. Educ. 1956, 33, 330.
Laboratory Equipment / Apparatus
Constant temperature vapor bath  Bessinger, F.; Pretorius, V.
A very simple constant-temperature furnace for use in kinetic studies has been developed.
Bessinger, F.; Pretorius, V. J. Chem. Educ. 1956, 33, 330.
Laboratory Equipment / Apparatus
A convenient glass cutter for tubing  Woodriff, Ray
A convenient glass cutter for tubing is constructed from a long-nosed pliers.
Woodriff, Ray J. Chem. Educ. 1956, 33, 293.
Laboratory Equipment / Apparatus
Finding the rest point of a balance: A mathematical justification for an odd number of swings  Wirtschafter, Jonathan D.
Presents a mathematical justification for an odd number of swings in determining the rest point of a balance.
Wirtschafter, Jonathan D. J. Chem. Educ. 1956, 33, 216.
Laboratory Equipment / Apparatus
An inexpensive mercury thermoregulator  Clark, Louis W.
This inexpensive mercury thermoregulator requires a 50 mL pipet, a short piece of thick-wall capillary tubing, a short piece of platinum wire, mercury, and a Bunsen burner.
Clark, Louis W. J. Chem. Educ. 1956, 33, 147.
Laboratory Equipment / Apparatus
Semimicro cryoscopic molecular-weight determinations  Pinkus, A. G.; Barron, B. G.
These suggestions eliminate two sources of difficulty encountered by students in carrying out cryoscopic (Rast) molecular-weight determinations.
Pinkus, A. G.; Barron, B. G. J. Chem. Educ. 1956, 33, 138.
Physical Properties |
Laboratory Equipment / Apparatus
Calorimeter for determining heat capacities of liquids  Greene, Stanley A.
This paper describes a method for utilizing a constant-power heating device that eliminates the need for a preponderance of equipment yet permits reasonable accuracy in determining the heat capacities of liquids.
Greene, Stanley A. J. Chem. Educ. 1955, 32, 577.
Calorimetry / Thermochemistry |
Laboratory Equipment / Apparatus |
Liquids
Textbook errors: IV. The sensitivity change of analytical balances  Mysels, Karol J.
It is the relative position of the knife edges and not the bending of the beam that determines the variation of sensitivity with the load on an analytical balance.
Mysels, Karol J. J. Chem. Educ. 1955, 32, 518.
Laboratory Equipment / Apparatus
Lecture thermometer and voltmeter  Dutton, Frederic B.
A sensitive temperature-indicating device with a reasonable rapid response time that relies on a thermocouple and can be seen by a large group.
Dutton, Frederic B. J. Chem. Educ. 1955, 32, 478.
Laboratory Equipment / Apparatus
A current stabilizer for laboratory electrolytic processes  Thompson, H. Bradford; Boehm, Mary Jo; Rogers, Max T.
Presents a circuit diagram for a current stabilizer suitable for laboratory electrolytic processes.
Thompson, H. Bradford; Boehm, Mary Jo; Rogers, Max T. J. Chem. Educ. 1955, 32, 463.
Laboratory Equipment / Apparatus |
Electrochemistry
Fundamentals of the analytical balance  Evans, W. D.
The usefulness of the analytical balance increases when the chemist understands its operation well enough to utilize its full capabilities and to realize its limitations.
Evans, W. D. J. Chem. Educ. 1955, 32, 419.
Laboratory Equipment / Apparatus
Magnetic susceptibility balance  Ihrig, Judson L.; Caldwell, Robert G.
This paper describes the construction and operation of a magnetic susceptibility balance that may be built easily and economically.
Ihrig, Judson L.; Caldwell, Robert G. J. Chem. Educ. 1955, 32, 320.
Laboratory Equipment / Apparatus |
Magnetic Properties
Glascol adapter  Johnston, Jean V.
The usefulness of a Glascol heating mantle can be increased by fitting it with a sand bath.
Johnston, Jean V. J. Chem. Educ. 1955, 32, 318.
Laboratory Equipment / Apparatus
Device to prevent back-suction in vacuum systems  Mathur, G. P.; Mukherjee, S.
Presents a device designed to prevent back-suction in vacuum systems.
Mathur, G. P.; Mukherjee, S. J. Chem. Educ. 1955, 32, 216.
Laboratory Equipment / Apparatus
A laboratory ozonizer  Andrews, A. C.; Mickel, B. L.; Klassen, K. C.
Describes the construction of a small, self-contained ozonizer for use in the laboratory.
Andrews, A. C.; Mickel, B. L.; Klassen, K. C. J. Chem. Educ. 1955, 32, 154.
Laboratory Equipment / Apparatus
Finding the rest point of an undamped analytical balance  Stacy, Irving F.
Provides a mathematical analysis for finding the rest point of an undamped analytical balance.
Stacy, Irving F. J. Chem. Educ. 1955, 32, 90.
Laboratory Equipment / Apparatus |
Instrumental Methods |
Chemometrics
Letters to the editor  Blake, G. G.
The author comments on the lack of credit received in the reference list of a previous article.
Blake, G. G. J. Chem. Educ. 1955, 32, 52.
Laboratory Equipment / Apparatus |
Instrumental Methods
A micro gas generator  Baker, Louis C. W.; Stouffer, John E.
This micro Kipp generator for H2S could be modified for use with CO2 and other gases.
Baker, Louis C. W.; Stouffer, John E. J. Chem. Educ. 1954, 31, 593.
Laboratory Equipment / Apparatus |
Gases |
Microscale Lab
A student polarimeter  Nechamkin, Howard
Describes the construction and use of a crude polarimeter suitable for use by students in early chemistry courses.
Nechamkin, Howard J. Chem. Educ. 1954, 31, 579.
Laboratory Equipment / Apparatus
Multiple chromatograms for detection of amino acids in blood serum  Ven Horst, Sister Helene; Carstens, Yolanda
A simple piece of equipment was constructed whereby 2 to 16 chromatograms could be run simultaneously and under identical conditions.
Ven Horst, Sister Helene; Carstens, Yolanda J. Chem. Educ. 1954, 31, 576.
Chromatography |
Amino Acids |
Qualitative Analysis |
Laboratory Equipment / Apparatus
A simple valve to prevent back suction in a vacuum system  Chaco, M. C.
A simple, compact device has been designed to prevent back suction of water from a water pump.
Chaco, M. C. J. Chem. Educ. 1954, 31, 547.
Laboratory Equipment / Apparatus
A simple, automatic gas buret  Goodwin, Robert D.
Presents a simple buret that automatically makes adjustments to preserve a constant pressure in the system under study.
Goodwin, Robert D. J. Chem. Educ. 1954, 31, 369.
Laboratory Equipment / Apparatus |
Gases
A convenient constant-temperature heater  Wendlandt, Wesley W.
This convenient constant-temperature heater does away with liquid baths.
Wendlandt, Wesley W. J. Chem. Educ. 1954, 31, 312.
Laboratory Equipment / Apparatus
A new bridge circuit for conductometric titrations  Svec, Harry J.
This circuit is an alternative to the traditional Wheatstone bridge.
Svec, Harry J. J. Chem. Educ. 1954, 31, 193.
Laboratory Equipment / Apparatus |
Electrochemistry |
Conductivity |
Titration / Volumetric Analysis
Mercury contact for constant temperature thermoregulator  Cefola, Michael; Chadwick, Arthur J.
Presents a device for the precise regulation of temperature in constant temperature baths.
Cefola, Michael; Chadwick, Arthur J. J. Chem. Educ. 1954, 31, 142.
Laboratory Equipment / Apparatus
Assemblies for suction filtration  Kay, Irving Allan; Burlant, William J.
A filter bell, cut from a standard four-liter flask, has been used successfully for collecting filtrates in Erlenmeyer flasks ranging in size from 50 to 1000 mL.
Kay, Irving Allan; Burlant, William J. J. Chem. Educ. 1954, 31, 127.
Laboratory Equipment / Apparatus
Two effective but inexpensive antiwetting agents  Taylor, Jay E.
Procedure for producing and using two effective but inexpensive antiwetting agents.
Taylor, Jay E. J. Chem. Educ. 1954, 31, 124.
Laboratory Equipment / Apparatus
A taper-tube condenser  Feldkamp, Rolland F.; Wilt, William A.
In an attempt to improve the drainage and increase the efficiency of a small, Liebig-type condenser, the authors have designed and built a taper-tube condenser.
Feldkamp, Rolland F.; Wilt, William A. J. Chem. Educ. 1954, 31, 84.
Laboratory Equipment / Apparatus
Automatic equipment for precipitation with H2S  Garcia, S. Bartniski
The automatic equipment presented simplifies and improves the safety of precipitations with H2S.
Garcia, S. Bartniski J. Chem. Educ. 1954, 31, 73.
Laboratory Equipment / Apparatus |
Precipitation / Solubility
An easily constructed manometer  Castro, Albert T.; Blood, Alden E.
Describes an easily constructed manometer for use in the first-year organic chemistry course.
Castro, Albert T.; Blood, Alden E. J. Chem. Educ. 1954, 31, 23.
Laboratory Equipment / Apparatus
Tygon bulbs for medicine droppers  Margrave, John L.
Tygon bulbs are recommended to replace rubber bulbs that are susceptible to deterioration.
Margrave, John L. J. Chem. Educ. 1953, 30, 623.
Laboratory Equipment / Apparatus
An inexpensive portable electroanalyzer  Farrington, Paul S.; Pecsok, Robert L.
Describes the design and operating characteristics of an electrolytic analyzer.
Farrington, Paul S.; Pecsok, Robert L. J. Chem. Educ. 1953, 30, 461.
Laboratory Equipment / Apparatus |
Instrumental Methods |
Electrochemistry
An interferometer  Malik, Jim G.; Speirs, John L.; Rogers, Max T.
Presents the general theory of interferometery, its uses, and a description of a constructed instrument and its operation.
Malik, Jim G.; Speirs, John L.; Rogers, Max T. J. Chem. Educ. 1953, 30, 437.
Laboratory Equipment / Apparatus |
Instrumental Methods
Letters  Thompson, H. Bradford
Suggests a modification to an electronic relay presented in an earlier letter.
Thompson, H. Bradford J. Chem. Educ. 1953, 30, 374.
Laboratory Equipment / Apparatus
An inexpensive, easily constructed spectrophotometer  Safford, Hurd W.; Westneat, D. F.
Presents the design and describes the operation of an inexpensive, easily constructed spectrophotometer that relies on a wedge interference filter.
Safford, Hurd W.; Westneat, D. F. J. Chem. Educ. 1953, 30, 343.
Spectroscopy |
Laboratory Equipment / Apparatus
Storing rubber tubing  Young, Roland S.; Benfield, D. A.; Strachan, K. G.
A convenient arrangement to store rubber tubing in a minimum space is illustrated.
Young, Roland S.; Benfield, D. A.; Strachan, K. G. J. Chem. Educ. 1953, 30, 317.
Laboratory Management |
Laboratory Equipment / Apparatus
Small-scale techniques in the teaching of organic chemistry  Stock, John T.
Describes the glassware and other equipment used in micro- and semimicro chemical techniques in organic chemistry.
Stock, John T. J. Chem. Educ. 1953, 30, 296.
Laboratory Equipment / Apparatus |
Microscale Lab
Electrodeposition apparatus for student laboratories  Elving, Philip J.; Hayes, John R.; Mellon, M. G.
Presents the design of a simple electrodeposition apparatus for student laboratories in quantitative analysis.
Elving, Philip J.; Hayes, John R.; Mellon, M. G. J. Chem. Educ. 1953, 30, 254.
Laboratory Equipment / Apparatus |
Electrochemistry |
Quantitative Analysis
An electronic interval marker  Marion, Alexander P.
The device described here provides a tone impulse at a rate variable from 30 to 120 per minute and an additional characteristic signal for submultiples within a range of 5 to 15 per minute.
Marion, Alexander P. J. Chem. Educ. 1953, 30, 252.
Laboratory Equipment / Apparatus |
Kinetics
A convenient apparatus for the distillation of solids  Barkley, Lloyd B.; Sneed, James K.; McGrath, Thomas F.; Levine, Robert
This apparatus is designed to overcome common difficulties in the distillation of solids or mixtures of solids.
Barkley, Lloyd B.; Sneed, James K.; McGrath, Thomas F.; Levine, Robert J. Chem. Educ. 1953, 30, 115.
Laboratory Equipment / Apparatus |
Separation Science
Some uses of radio service kits in teaching quantitative analysis  Phillips, John P.
The problem of obtaining inexpensive and practical instruments to supplement conventional equipment specifically designed for chemical purposes has been partially solved by the purchase of radio service instrument kits.
Phillips, John P. J. Chem. Educ. 1953, 30, 70.
Quantitative Analysis |
Laboratory Equipment / Apparatus |
Instrumental Methods
Some (organic) lab tips  Antelman, Marvin
A short list of recommendations regarding boiling chips, a substitute cold finger, increasing the capacity of a stopper, inexpensive stirrers, and using bathtub plugs for stoppers.
Antelman, Marvin J. Chem. Educ. 1952, 29, 523.
Laboratory Equipment / Apparatus |
Laboratory Management
A continuous cloud chamber  Kuehner, A. L.
Details the construction and use of a continuous cloud chamber.
Kuehner, A. L. J. Chem. Educ. 1952, 29, 511.
Laboratory Equipment / Apparatus |
Nuclear / Radiochemistry
An inexpensive thermostat  Linke, William F.
A simple and surprisingly efficient thermostat can be constructed in minutes using a three-necked flask and a liquid (or mixture of liquids) that boils at a desired temperature.
Linke, William F. J. Chem. Educ. 1952, 29, 492.
Laboratory Equipment / Apparatus
A simple assembly for conductometric titrations  Thomas, E. B.; Nook, R. J.
The authors have modified a device for conductometric titrations to improve its precision.
Thomas, E. B.; Nook, R. J. J. Chem. Educ. 1952, 29, 491.
Conductivity |
Titration / Volumetric Analysis |
Quantitative Analysis |
Laboratory Equipment / Apparatus
A new and useful laboratory clamp  Grantom, Roy L.
Describes a clamp that holds a rubber stopper in place to allow the maintenance of a moderate pressure in a straight-wall glass tube.
Grantom, Roy L. J. Chem. Educ. 1952, 29, 455.
Laboratory Equipment / Apparatus
A recorder for polarography  Thomas, E. B.; Nook, R. J.
The switching arrangement and potential recorder presented here has been used primarily for polarographic work, but may be adapted to many other uses that employ small changes of potential or current to measure or control chemical processes.
Thomas, E. B.; Nook, R. J. J. Chem. Educ. 1952, 29, 414.
Laboratory Equipment / Apparatus |
Electrochemistry
The 4 in 1 chem-mixer  Wendland, Ray
This device allows one to rely on one- rather then three-necked flasks.
Wendland, Ray J. Chem. Educ. 1952, 29, 365.
Laboratory Equipment / Apparatus
The thermomatic steamer  Wendland, Ray
Presents an apparatus designed to be kept together, ready for immediate use and easy to clean without tearing down, to conduct steam distillations in organic chemistry.
Wendland, Ray J. Chem. Educ. 1952, 29, 364.
Laboratory Equipment / Apparatus
Semimicro laboratories  Chelberg, Raymond R.; Anderson, John E.
Describes the equipment and preparations needed to conduct semimicro laboratories in general, organic, and analytical chemistry.
Chelberg, Raymond R.; Anderson, John E. J. Chem. Educ. 1952, 29, 189.
Microscale Lab |
Laboratory Management |
Laboratory Equipment / Apparatus
A constant-temperature bath for warm climates  Loveless, W. M.; Marshall, Madison L.
Describes a simple water bath with a cooling element that can be moved from one room to the next.
Loveless, W. M.; Marshall, Madison L. J. Chem. Educ. 1952, 29, 137.
Laboratory Equipment / Apparatus
A continuous ether-extraction apparatus  Holliman, F. G.
The apparatus presented has been constructed to provide both speed of assembly and versatility in respect of volume of solution being extracted.
Holliman, F. G. J. Chem. Educ. 1952, 29, 96.
Laboratory Equipment / Apparatus |
Ethers |
Separation Science
Letters  Swinehart, D. F.
The author points out the repeated observation of positive corrections to be made in calibrating Exax burets.
Swinehart, D. F. J. Chem. Educ. 1951, 28, 660.
Calibration |
Laboratory Equipment / Apparatus
Electrolysis with controlled cathode potentials  Foster, Duncan G.
This paper describes the construction of an instrument for the control of a cathode's potential during an electrolysis procedure (a potentiostat) and its use in a quantitative analysis laboratory.
Foster, Duncan G. J. Chem. Educ. 1951, 28, 626.
Electrochemistry |
Instrumental Methods |
Laboratory Equipment / Apparatus |
Quantitative Analysis
A compact hydrogen sulfide generator  Gordon, H. B.
Describes a simple device that relies upon the heating of "Aitch-Tu-Ess" to generate hydrogen sulfide.
Gordon, H. B. J. Chem. Educ. 1951, 28, 583.
Laboratory Equipment / Apparatus
A laboratory pressure regulator  Lowe, George G.
Presents a device suitable for maintaining a constant pressure when performing low-pressure distillations.
Lowe, George G. J. Chem. Educ. 1951, 28, 535.
Laboratory Equipment / Apparatus
A rapid method for routine checking of melting points  Hughes, Virgil E.
Offers a device and procedure for checking the melting points of ten samples simultaneously.
Hughes, Virgil E. J. Chem. Educ. 1951, 28, 479.
Phases / Phase Transitions / Diagrams |
Physical Properties |
Laboratory Equipment / Apparatus
A simplified construction for vacuum distilling apparatus  Wendland, Ray
Describes a simplified construction for vacuum distilling apparatus and its use with a fractionating column.
Wendland, Ray J. Chem. Educ. 1951, 28, 332.
Laboratory Equipment / Apparatus |
Separation Science
An electric flask heater  Mathews, Frederick
Describes the construction of an electric flask heater from very simple materials.
Mathews, Frederick J. Chem. Educ. 1951, 28, 258.
Laboratory Equipment / Apparatus
An improved stirrer assembly  Patton, John T.
Presents the design of a leak-free stirrer assembly.
Patton, John T. J. Chem. Educ. 1951, 28, 207.
Laboratory Equipment / Apparatus
A versatile gas-absorption apparatus  Russell, Robert R.
Presents a design for a simple gas-absorption apparatus.
Russell, Robert R. J. Chem. Educ. 1951, 28, 145.
Laboratory Equipment / Apparatus |
Gases
An improvised ultramicroscope  Kiplinger, C. C.
The ultramicroscope is an effective device for demonstrating the probability of molecular motion by its revelation of Brownian movement.
Kiplinger, C. C. J. Chem. Educ. 1951, 28, 42.
Laboratory Equipment / Apparatus |
Kinetic-Molecular Theory |
Laboratory Equipment / Apparatus