J. T. Baker Chemical Company

Allied Corporation

Frank J Antoci

Robert Baxter, Jr

Pasquale M Petrucci

George F Martin

William J Tynes, Iii

Bernard O Bachenheimer

Ernest N Pellegrino

Richard C Seltenreich

Edward L Carver, Jr

A system that is particularly useful in biological fluid analysis includes a face plate member and a mating flexible member, one of which has a plurality of passages. Selected motion of the flexible member provides a valving action to control fluid flow into, through, and out of the passages. An analysis chamber in a surface of the face plate member is in fluid communication with a passage and has an analyzer which, for a hematology analyzer, is preferably an impedance-type particle counter.

Particle analysis system

A system is provided for the automatic measurement of red and white blood cell counts and other blood parameters. The system includes hydraulic apparatus for the aspiration of a blood sample and the proper measurement of the parameters thereof. During operation, the system directs an operator at each step of the procedure, allowing only permitted functions to be performed, thereby decreasing the opportunity for operator error. Each blood cell count is performed twice and the answers compared, an indication of instrument malfunction being presented to the operator if the measurements do not agree within a predetermined percentage. The system monitors itself to detect malfunctions which may occur and alerts the operator to the occurrence of a malfunction.

Automatic blood analyzing system

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Milford, CT, United States of America

Frank J Antoci