A SMALL WASHBOTTLE C. SHELDON HART.SYRACUSE UNIVERSITY, SYRACUSE, NEW YORK
The usual type of washbottle, constructed from a Florence flask, glass bends, and a two-hole stopper, is not easily made in the smallest sizes. One difficultylies in securing two-hole stoppers to fit 25-cc. and 50-cc. flasks. Then, too, these small stoppers require glass tubing of smaller diameter than is ordinarily available. These difficulties are met by a modification of the familiar groundglass-stoppered washbottle. The device (Fig. 1) consists of a "Y-tube through which a long nozzle-tube passes ver; tically to the bottom of the flask. The bottom end of the " Y tube fits in a one-hole stopper, while the top is closed by a slip rubber connection carrying the nozzle-tube. A side-arm serves as the mouthpiece. The only glassblowing required is in the construction of t h e "Y-tube. If a "Ytube is a t hand it may be substituted for the "Y"-tube. The device FIGURE2. reouires a one-hole stopper, but with a very narrow-necked flask, where a stopper may be impossible, a piece of rubber tubing may be slipped over the shank to serve as a stopper. In Figure 2 the same result is attained by sealing the joint instead of using a rubber connection. To avoid making the washbottle topheavy it is imperative that the overall height be kept a t a minimum; also, both mouthpiece and nozzle should be as short as possible. The dimensions are governed by the size of bottle desired.
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