Centrifuge tube for improved pellet retention

Details Centrifuge tube for improved pellet retention Centrifuge tube for improved pellet retention

1992-02-03

1993-08-10

Housel, James C.

Chemical apparatus and process disinfecting, deodorizing, preser

Control element responsive to a sensed operating condition

422 99, 422 72, 435299, 435296, B01L 300

Patent

active

052346676

ABSTRACT:
A centrifuge tube has elongated hollow vessel, and the vessel has a closed bottom end. A portion of the inner surface of the vessel is roughened near the closed bottom end, e.g., by micropitting the portion such that the solid pellet or precipitate that is separated from the supernatant of a specimen during centrifuging is retained on the roughened portion when the supernatant is drawn out of the tube subsequent to centrifuging. If desired, a sticky substance can be deposited on the roughened portion of the inner surface to further facilitate retention of the pellet on the roughened portion when the supernatant is drawn out of the tube subsequent to centrifuging.

REFERENCES:
patent: 3841838 (1974-10-01), Natelson
patent: 4579828 (1986-04-01), Ali
patent: 4713219 (1987-12-01), Gerken et al.
patent: 4755356 (1988-07-01), Robbins et al.
patent: 4902270 (1990-02-01), Comeau et al.
patent: 4956103 (1990-09-01), Jessop et al.
patent: 5084240 (1992-01-01), Babson

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