Receiving Flask, Condenser, and Vacuum Adapter
The assembly of the distillation apparatus is demonstrated. The 12 thumbnail images summarize the content of the video. Click an image to see the image gallery.
Loosely clamp the receiving flask and place it approximately where it belongs. Lightly grease the condenser and insert it in the vacuum adapter. Align the condenser with the joint on the side arm of the distillation flask. Complete the assembly by inserting the vacuum adapter into the neck of the receiving round-bottomed flask. Clamp your condenser using the metal joint clamps.
Note the location of all clamps. A common tendency of beginning students is to "over clamp" apparatus. (Too many technico clamps can stress the glassware causing it to break. Avoid placing undue pressure on the glassware.) Tighten the clamps only enough to hold each piece in place.
The distillate is collected in the receiving flask. Before beginning a distillation, verify that the system is open to the atmosphere. Never heat a closed system. It may explode or fly apart. Have a look at the vacuum adapter side arm. If it has an opening to allow pressure to equalize, you are ready to begin heating.
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