Patent ID: 9028774
Filing Date: 2015-05-12
Classification: B01L,B23P,Y10T

Abstract:
1. Pipetting apparatus ( 1 ), in particular for pipetting a fluid sample ( 9 a ) by aspiration into a pipetting container ( 9 ) by means of air ( 9 b ) under a pipetting pressure, said pipetting apparatus comprising the following a valve arrangement ( at least one pump device ( a pipetting channel ( a bypass channel ( wherein the pipetting channel and the bypass channel are each connected to the valve chamber; wherein the at least one valve device is designed such that, to generate the desired pipetting pressure in the pipetting channel, the chamber pressure is distributed by the valve device between the pipetting channel and the bypass channel, wherein the pipetting channel ( wherein the valve device comprises a closure support element ( and wherein the closure element is formed such that it partially opens the first connecting channel and the second connecting channel when it is arranged in a third position between the first and second position.