Pipetting unit and method of pipetting a test liquid

摘要

A pipetting unit (100) and a method of using the pipetting unit (100) for pipetting a volume V1 of test liquid (10) for carrying out an in vitro diagnostic test, are here disclosed. The method comprises dipping a nozzle (50) of a pipetting unit (100) into a test liquid (10) and aspirating a volume V4 of the test liquid (10) larger than the volume V1 required for carrying out the test. The method further comprises dipping the pipetting unit (100) into a wash liquid (20) and dispensing a volume V2 equal or smaller than V4 -V1 of the test liquid (10) into the wash liquid (20). The method further comprises dipping the pipetting unit (100) into a reaction liquid (30) and dispensing the volume V1 of test liquid (10) required for the test.