220 volts, solid-state self-compensating circuit, reversible flow, pumping rate adjustable from 3 ml per min to 5000 ml per min, accommodates plastic tubing sizes 1/8, 3/16, 1/4, 5/16 and 3/8 in. Id by 1/16 in. Wall thkns, o/a dim. 12.5 in. Lg by 9.5 in. Deep by 7.5 in. H
