Precision Scientific, Inc.

Theodore Christie

Clifford C Johnson

Peter Juodikis

Apparatus for measuring the vapor pressure of a volatile liquid includes one or more cylindrical test chambers immersed in a constant temperature water bath. Each test chamber includes connected liquid and vapor compartments, with the vapor compartment coupled to a pressure transducer and display arrangement. The test chambers are mounted to a movable tray in the constant temperature water bath. An eccentric drive assembly driven by the combination of a motor and gear box is coupled to the tray for linearly displacing the tray and test chambers in a reciprocating manner until a constant pressure is observed on the pressure display.

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Evanston, IL, United States of America

Theodore Christie