Apparatus for, and methods of, operating upon a fluid

Details Apparatus for, and methods of, operating upon a fluid Apparatus for, and methods of, operating upon a fluid

B - Operations, Transporting

01

D

182/105, 233/9

B01D 29/085 (2006.01) B01D 29/01 (2006.01) B01J 19/00 (2006.01) G01N 30/00 (2006.01) G01N 30/14 (2006.01) G01N 30/46 (2006.01) G01N 30/60 (2006.01)

Patent

CA 1289894

27998-1 APPARATUS FOR, AND METHOD OF, OPERATING UPON A FLUID Abstract of the Disclosure This invention provides a filter comprising a nonporous support member open at one end and a porous disc rigidly secured to the support member at an opposite, preferably smaller, end. The disc may be formed from fibers preferably having a thickness of approximately 0.5-50 micrometers, or it may be formed from a plurality of particles or beads retained by a pair of membranes. When the disc is relatively small such as approximately 1 millimeter in diameter, it may be pressed into a constricted end of the support member. When the disc has an increased diameter, it may be rigidly supported by a retainer preferably made from a mesh material and welded to the support member. For even larger disc sizes, the disc may be supported between two (2) retainers preferably welded to the support member A plurality of receptacles may be disposed in a tray to, serve as the filters, or receive the filters, in a relationship for providing for a flow of fluid through the filters. The fluid may be introduced into, and retained in, the support members and discs by capillary action. The fluid may be passed through the filters by centrifuging the tray with the filters. The trays bearing the filters may be centered in a container to inhibit contact with the container walls and fluid vapor may be passed through the container to interact with material on the centered filters. An absorbent sheet moistened with the fluid may be positioned against the container walls to maximize vapor content within the container.

519159

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