Pipette for dispensing sample in equal amts. - using control element fitted to the plunger for movement with or independently of the plunger

摘要

Pipette for dispensing predetermined liq. quantities comprises a plunger within an axial bore and, arranged on the plunger, a movable element which jams with the plunger when moved in one direction but moves independently of it when moved in the opposite direction. Reproducible amts. can be dispensed.