Patent ID: 7418977
Filing Date: 2008-09-02
Classification: B01L,G01N,Y10T

Abstract:
1. A liquid-handling apparatus having a liquid switch, the liquid switch comprising: a rotation body rotatable around a rotation axis; a first channel formed in the rotation body and, in a branching area, branching into a second channel and a third channel formed in the rotation body; wherein the first, second and third channels are adapted for a centrifugal liquid flow therethrough upon rotation of the rotation body, wherein the channels are adapted to route a liquid volume from the first channel into one of the second channel and the third channel, dependent on at least one selected from the group comprising a frequency of rotation, a sense of rotation and an acceleration of rotation of the rotation body, wherein a portion of the first channel running into the branching area extends in a first direction, wherein a portion of the second channel running into the branching area extends in a second direction, wherein a portion of the third channel running into the branching area extends in a third direction, and wherein the angle between the first and second directions is identical but opposite to the angle between the first and third directions.