Hensen-Stempel Pipette

An easy, quick method for sub-sampling plankton samples. Wide bore pipettes are ideal for accurately filling SedgewickRafter, Palmer Cell or Ward Counting Wheel. In three sizes, each with two different, changeable Delrin plastic spools - spool size determines sample size. Handi-Grip plastic handles, and stainless steel springs. Also known as Aliquot Transfer Pipettes. Available with and without spring-loaded plungers.