Measuring and testing – Sampler – sample handling – etc. – Capture device
Patent
1989-12-18
1991-10-22
Noland, Tom
Measuring and testing
Sampler, sample handling, etc.
Capture device
7386323, 7386401, 7386414, G01N 114, B01L 302
Patent
active
050584413
ABSTRACT:
A disposable pipette comprises a tube having first and second ends, a porous barrier plug mounted in the tube at the second end, and a sealing device mounted in the tube between the second end and the barrier plug. The sealing device has a closed position and an open position into which it must be forced. The pipette further comprises a closure mounted in the tube between the second end and the sealing device, wherein the first end is immersed in a fluid, when the sealing device is forced to the open position and when the second end is connected to a suction, fluid is suctioned into the pipette. A safety pipette adaptor comprises an annular sleeve for mounting on the suction end of a pipette. A rod is provided in the sleeve in the direction of an axis for insertion into a pipette or pipette insert and is capable of displacing a sealing device in a pipette or pipette insert into an open position. A disposable pipette insert comprises a tube having first and second ends and sealably fitting in the suction end of a pipette with the second end of the tube being flush with the pipette' s suction end, a porous barrier plug mounted in the tube at the first end, and a sealing device mounted in the tube between the second end and the barrier plug. The sealing device has a closed position and an open position into which it must be forced. The pipette further includes a closure mounted in the tube at a position between the second end and the sealing device, wherein when the sealing device is forced into the open position, air can flow in and out of the tube.
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Noland Tom
The United States of America as represented by the Department of
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