Methods in chemical analysis : originated or developed in the Kent chemical laboratory of Yale university / comp. by Frank Austin Gooch.

  • Frank Austin Gooch
Date:
1912
Catalogue details

Licence: In copyright

Credit: Methods in chemical analysis : originated or developed in the Kent chemical laboratory of Yale university / comp. by Frank Austin Gooch. Source: Wellcome Collection.

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    The pump has been found serviceable in various applications. For filling burettes it is better than a siphon, the stoppers of the standard solution bottles being provided with two holes, through one of which the delivery tube passes, while to the other the pump is applied by the adapter shown in the figure. It may be applied to a Kipp generator in which higher pressure is momen- tarily required. In various other ways it has been found to be a useful piece of apparatus. A Convenient Form of Rotary Shaker. An apparatus designed by Perkins* serves admirably for put- ting a liquid into rotary motion for the purpose of securing gentle but thorough agitation. The container is an Erlenmeyer Fig. io. flask. This is suspended in a retort clamp held loosely in another clamp, which in turn is also loosely held by another clamp firmly attached to the upright rod, the whole forming a system of loose joints at right angles, which permits oscillatory movement of the flask. Motion is given to the flask by a wire crank attached eccentrically to the rotating table driven by the motor. The use of this apparatus in the absorption of iodine, free or liberated in reaction, by metallic silver will be described later. * Claude C. Perkins, Am. Jour. Sci., [4], xxviii, 33.
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