Device for sample pickup and washing

Details Device for sample pickup and washing Device for sample pickup and washing

G - Physics

01

N

73/103

G01N 1/14 (2006.01) G01N 35/10 (2006.01)

Patent

CA 1149640

ABSTRACT OF THE DISCLOSURE: The invention concerns a device for picking up liquid samples to be analyzed, especially in automatic samplers,it comprises a needle connected to a sucking pump and supported by a support which moves the needle downwards to pick up the sample from a vial containing same and up- wards from the vial. In order to perform a washing step after one aspiration and before the subsequent one, the needle support is designed to perform an oscillating move- ment when the support is in its upward position with respect to the vial. The oscillating movement is performed by the cooperation of cam means and a control rod having at least a pivot axis controlling the alternative movements. The oxcillating movement makes the needle plunge into a side- wardly positioned trough containing a washing liquid.

372261

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