Device and method for assay of liquid sample

Details Device and method for assay of liquid sample Device and method for assay of liquid sample

1989-11-30

1993-07-13

Warden, Robert J.

Chemistry: analytical and immunological testing

Optical result

With reagent in absorbent or bibulous substrate

422 56, 422 57, 422 58, 435 14, 435 28, 436170, G01N 2101

Patent

active

052273105

ABSTRACT:
A device for colorimetric assay of at least one component in a liquid sample, which device comprises a support having a through hole with an area of from 3 to 80 mm.sup.2, a transparent porous film which is provided on the support to cover the hole, a reagent layer provided on a surface of the porous film which is not contacted to the support, and a sample-holding layer which covers the reagent layer and a part of a surface of the support, whereby an amount or concentration of at least one component in the liquid sample may be easily and accurately measured.

REFERENCES:
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patent: 4256693 (1981-03-01), Kondo et al.
patent: 4271121 (1981-06-01), Diller et al.
patent: 4333339 (1982-06-01), McNeely et al.
patent: 4477575 (1984-10-01), Vogel et al.
patent: 4495291 (1985-01-01), Lawton
patent: 4587102 (1986-05-01), Nagatomo et al.
patent: 4631174 (1986-12-01), Kondo et al.

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