Harry
P. Schultz
University of Miami Coral Gables, Florida
A Broad-Surface Condenser
It is convenient or even necessary in some laboratory operations to condense vapors of hot,, volatile liquids contained in vessels with large surface areas, such as beakers or funnels. The use of a large, round-bottom flask as a condenser under such conditions, as described by Morton,' is cumbersome. This paper describes a light, broad-surface condenser made from two 6-in. Pyrex watch glasses whose edges have been sealed to one another with epoxy resin to form a convex condensing surface. Short water inlet and outlet tubes of glass provide connections for rubber condenser tubing. The condenser2may be used atop beakers up to 2 1 in
MORTON, A. D., "Laboratory Technique in Organic Chemistry," hlcGraw-Hill Book Company, Inc., New York, 1938, p. 204. The author thanks the Corning Glass Works, Corning, N. Y., for producing the prototype Sehultz condenser a.; a gift.
272
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Journal o f Chemical Educofion
size, on conical funnels during hot filtration, and also on conical funnels during the unit process of hot extraction (see photographs).
