Device for aspirating and dispensing liquid samples

摘要

A device for receiving and releasing liquid samples comprises a pump consisting of a cylinder chamber (3), a plunger (4) and a plunger drive (5); an impulse generator (6); a tip (8) connected via a line (7) to the cylinder chamber; and a channel (27) for rinsing the chamber. The chamber opens out into the cylinder chamber. An Independent claim is also included for a system for receiving and releasing liquid samples comprising several of the above devices. Preferred Features: The chamber formed by the cylinder chamber, plunger, line and tip is filled with a liquid column with or without an air gap. The volume of a liquid sample released is defined by the parameters of a single impulse produced by the impulse generator. The cylinder chamber has a capacity of 5-200 micro-liters.