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Unformatted text preview: on apparatus as
shown in Figure 3. This apparatus consists of a 125 mL filter flask, a black #3
neoprene adapter, and a plastic filtering funnel with a white fritted glass filter inside.
Clamp the filter flask securely to the support rods. Wet the tip of the thick rubber
tubing and connect it to the flask from vacuum supply in the lab. Obtain a small circle
of filter paper from the front of the room. Always use filter paper when filtering
through a funnel. The filter paper is thin. Be sure you only have one sheet of filter
paper. Place the filter paper against the fritted glass inside the funnel. Begin by
turning on the vacuum. Seat the filter paper to the fritted glass by squirting a little
deionized water on the filter paper. If everything is working properly, the paper 42 should be pulled down against the fritted glass and the small spray of deionized water
should be pulled through into the flask.
Vacuum Figure 3: Filtering Apparatus
8. Once the product has crystallized, remove the casserole from the ice bath and, using a
rubber policeman, carefully transf...
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This note was uploaded on 04/09/2013 for the course CHE CHE 2C taught by Professor Nasiri during the Spring '07 term at UC Davis.
- Spring '07