Abstract
Summary
A pipetting machine designed for the repetitive delivery of fluid volumes in the range of 0.01 cc to 0.60 cc has been described. A counter and its associated parts drives an accurately made stainless steel plunger forward displacing the fluid in a glass cylinder at such a rate that one count represents a delivered volume of 0.01 cc. Any given number of counts up to 60 may be selected allowing the operator to deliver that volume repeatedly to a large series of tubes. Accuracy of delivery is ensured since the linear movement of the plunger is directly proportional to the volume delivered; time is saved in pipetting operations involving large series of tubes and the fatigue of frequent pipette refillings is reduced.
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