Pipetter barrel extension tube

Details Pipetter barrel extension tube Pipetter barrel extension tube

B - Operations, Transporting

01

L

222/2

B01L 3/02 (2006.01)

Patent

CA 1334957

A pipetter barrel extension tube, attachable at its proximal end to any one of a variety of pipetter barrels and at its distal end to standard disposable pipetter tips. The pipetter barrel extension tube serves to extend the length of the barrels and provide sterile access to deep containers while substantially isolating the permanent barrel of the micropipet from damage caused by chemical and radiochemical contamination. One novel design feature of the extension tube is an air channel designed to minimize dead air volume in the extension tube. A removable conical insert plug serves to reduce the air channel volume. Removal of the plug facilitates cleaning and reuse of the extension tube. The device also includes a distal end segment which, when intact, serves as a space-filler to reduce dead air volume in disposable tips for pipetting small volumes. When the segment is removed, the extension tube still attaches to the same disposable tips but allows larger volumes of liquid into these tips as required for larger capacity pipetting devices.

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