Solid phase extraction filtration disk and method for its manufa

Details Solid phase extraction filtration disk and method for its manufa Solid phase extraction filtration disk and method for its manufa

1995-04-27

1996-07-23

Fortuna, Ana

Liquid purification or separation

Filter

Material

2101983, 2105021, 210505, 264451, 264257, 501 55, B01D 3900

Patent

active

055386342

ABSTRACT:
A solid phase extraction (SPE) filtration disk provides a glass fiber disk embedded with bonded silica/particulate chemistries homogeneously dispersed throughout the disk. Bonded silica/particulate chemistries are added to the glass fibers (and acidified water/solvent solution) during the formation of the glass fiber paper, as opposed to after the formation of the glass fiber paper. This enables homogenous dispersion of silica throughout the entire depth of the filtration disk.

REFERENCES:
patent: Re32107 (1986-04-01), January
patent: 3455818 (1969-07-01), Leifield
patent: 3904422 (1975-09-01), Eaton
patent: 4789479 (1988-12-01), Onitsuka et al.
patent: 4971736 (1990-11-01), Hagen et al.
patent: 5403489 (1995-04-01), Hagen et al.

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