Device for sample preparation

Details Device for sample preparation Device for sample preparation

2007-11-15

2011-10-11

Therkorn, Ernest G (Department: 1778)

Liquid purification or separation

With means to add treating material

Chromatography

C210S635000, C210S656000, C422S070000, C422S525000

Reexamination Certificate

active

08034239

ABSTRACT:
This invention relates to a pipette tip or tube designed to perform biological or chemical sample preparation, purification or separation. The narrow end of the pipette tip is twisted in such a way that it forms a narrow spiral passage, which allows the retention of the chromatographic material in the pipette tip. The narrow spiral formed by twisting the capillary or the tube creates an opening that is large enough to permit the passage of fluids or smaller particles, but small enough to block the passage of solid materials or larger particles, The device described herein can be used for sample separation or purification using a vacuum, pressure, centrifugation, gravitation or other separation methods.

REFERENCES:
patent: 1840053 (1932-01-01), Seymour
patent: 2049225 (1936-07-01), Ripley
patent: 3478886 (1969-11-01), Hornbeck
patent: 4187724 (1980-02-01), Citrin
patent: 4369665 (1983-01-01), Citrin
patent: 4934272 (1990-06-01), Sternin et al.
patent: 6190559 (2001-02-01), Valaskovic
patent: 6537502 (2003-03-01), Shukla et al.
patent: 7276158 (2007-10-01), Shukla et al.
patent: 2002/0162655 (2002-11-01), Lynde et al.

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