Colorimetric dry reagent test device and method for the determin

Details Colorimetric dry reagent test device and method for the determin Colorimetric dry reagent test device and method for the determin

1997-03-05

1999-01-05

Alexander, Lyle A.

Chemistry: analytical and immunological testing

Optical result

With reagent in absorbent or bibulous substrate

436164, 422 56, G01N 3348, G01N 2177

Patent

active

058561994

ABSTRACT:
A dry reagent colorimetric test system for determining analytes in sample solutions containing interfering colored materials is presented comprising a reagent impregnated matrix containing a chromogenic material responsive to the analyte being detected and a masking dyestuff for obviating the interference caused by the colored materials thus allowing a proportional visual estimation of the response of the chromogenic material due to the amount of analyte in the sample solution.

REFERENCES:
patent: 3973909 (1976-08-01), Van Der Werf et al.
patent: 5424215 (1995-06-01), Albarella et al.
patent: 5593895 (1997-01-01), Cahill et al.

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