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Filtration Gravity and vacuum filtration are demonstrated.
Laboratory Equipment / Apparatus |
Separation Science
Separating and Purifying Laboratory processes frequently used to separate mixtures or purify substances including centrifuging, chromatography, distillation, extraction, filtration, and recrystallization are demonstrated.
Laboratory Equipment / Apparatus |
Separation Science
Centrifuging a SampleJohn W. Moore, Jerrold J. Jacobsen, Lois M. Browne, John F. Zimmerman The demonstration on this page shows a technique that should not be used by undergraduate chemistry laboratory. This video shows what happens to sample in a centrifuge while the centrifuge is on, and the result of stopping the centrifuge improperly. A narrative is included in this video: The centrifuging process allows the solvent to completely settle out. The jarring caused by hand braking destroys the distinct separation between supernatant and solid.
Analysis of the Thickening Agents in Automotive Greases by GC–MSDavid Mayotte, Craig J. Donahue, and Cheryl A. Snyder Describes a laboratory procedure for the identification of the thickening agents in lubricating greases by GCMS. Mayotte, David; Donahue, Craig J.; Snyder, Cheryl A. J. Chem. Educ.2006, 83, 902.
Applications of Chemistry |
Consumer Chemistry |
Gas Chromatography |
Industrial Chemistry |
Mass Spectrometry |
Separation Science |
Fatty Acids
The Isolation of Rubber from Milkweed Leaves. An Introductory Organic Chemistry LabLisa Volaric and John P. Hagen Experiment that teaches many basic laboratory techniques (refluxing, vacuum filtering, extracting, centrifuging, and IR fingerprinting) while introducing students to polymers and natural-product isolations. Volaric, Lisa; Hagen, John P. J. Chem. Educ.2002, 79, 91.
