American Home Products Corporation

Miles G Hossom

Thomas L Kraft

Howard A Vick

An improved method for measuring and dispensing fractions of a liquid sample in a device which comprises a casing having a vertical axis and containing a central chamber and transparent cells distributed around the chamber. Each cell is connected to the chamber by a closure cup. A capillary constriction separates each pocket from the corresponding cell. The improvement comprises adding polyvinylpyrollidone to the liquid sample.

Method for measuring and dispensing fractionary volumes of liquid samples

Automated chemical analysis apparatus is disclosed for testing a plurality of chemical samples in variable testing sequences. In the preferred embodiment, the apparatus is operative to test bacterial sensitivity to a plurality of drugs, each of which may have varying concentrations. More specifically, one, two or three concentrations of each of a plurality of drugs may be tested in accordance with sequence command information on a source/record card which is automatically entered into the apparatus. The results of the variable sequence testing are recorded directly on the card adjacent to the identification of the drug being tested.

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Hauppauge, NY, United States of America

Miles G Hossom