Measuring and testing – Sampler – sample handling – etc. – Capture device
Patent
1990-05-21
1992-01-21
Noland, Tom
Measuring and testing
Sampler, sample handling, etc.
Capture device
7386385, 7386401, G01N 110, B01L 302
Patent
active
050818724
ABSTRACT:
A pipetting insert for a pipetting device for taking a liquid sample from a vacuum tube closed in air-tight manner by a stopper. In order to prevent the undesirable escape of fragments of a sample from the vacuum tube before the sample is taken, the pipetting insert is made of plastic, has an elongated body which has a conical part at one end, a hollow tip in the form of a wall for piercing by a pipetting needle at the other end, and a central tubular part therebetween. The central part of the body has a bore along its longitudinal axis for connecting the interior of the conical part to the interior of the hollow tip, and the outer wall of the central part of the body contains at least one connecting duct which extends between the conical part and the tip and the cross-section of which is considerably smaller than the cross-section of the bore in the central part of the body.
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Gould George M.
Hoffman-La Roche Inc.
Johnston George W.
Malaska Stephen L.
Noland Tom
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