Micromedic Systems, Inc.

Icn Micromedic Systems, Inc.

James J Cornelison

Edgar G Johnson

Paul V Mackovjak

An improved beta activity counter is disclosed which provides for counting plural, preferably even numbers of, samples simultaneously, while allowing automated handling of sample vial racks which are different widths are multiples of the number of simultaneous testing cells. The number of indexing steps needed per rack are adjusted automatically according to the number of vials that each rack will hold. Quench counting of adjacent samples simultaneously via use of one external source is also provided.

Beta counting means and apparatus

This invention is directed to an automatic pipette which directly detects the volume of an inserted syringe, thus eliminating the need for operator specification of this quantity.

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Gurley, AL, United States of America

James J Cornelison