Pipette device for aspirating and dispensing a metered liquid

摘要

The apparatus (10) has a hollow shaped metallic cylinder (20) delimiting a work space (44) along a cylinder section in a radial direction, and a pot-shaped hollow outer piston (40) delimiting the work space in axial direction. The cylinder and the piston move with respect to each other such that a piston-cylinder system has an axial longitudinal end region for metering liquids and an axial longitudinal end region for work. The piston surrounds outer side of the cylinder in the longitudinal region for work. The piston accommodates a pressure sensor (64) for acquiring pressure of a work fluid.