G - Physics – 01 – N
Patent
G - Physics
01
N
G01N 1/10 (2006.01) B01L 99/00 (2010.01) G01N 35/10 (2006.01) G01N 35/06 (1990.01) B01L 11/00 (2006.01)
Patent
CA 2132270
RAN 4090/246 Abstract An automatic pipetting device in which only one pipetting needle is available with an appropriate metering or transport means for the pipetting needle, the pipetting needle being connected to a metering syringe by a first tube and a first T- connection. In order to allow rapid and thorough cleaning of the interior of the pipetting needle with minimum complexity, the pipetting device has one arm of the first T-connection (13) is connected to a cleaning means comprising the following components: a) a plunger pump (24) connected by a second T- connection (23), a second tube (22) and 3 first valve (21) to one arm of the first T-connection (13), b) a suction tube (32), which is immersed in a cleaning liquid contained in a container (33) and which is connected to one arm of the second T-connection (23) by a second valve (31), and c) a control means (41) for controlling the first valve (21), the second valve (31 ) and the plunger pump (24). (Fig. 1)
F. Hoffmann-La Roche Ag
Gowling Lafleur Henderson Llp
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