Test devices and methods for determining halides in aqueous samp

Details Test devices and methods for determining halides in aqueous samp Test devices and methods for determining halides in aqueous samp

1992-04-21

1993-07-20

Alexander, Lyle

Chemistry: analytical and immunological testing

Halogen containing

In aqueous solution

436124, 436166, 436169, 422 56, G01N 3338, G01N 3352

Patent

active

052292991

ABSTRACT:
A test device and method of use for determination of aqueous halide ions is described. The device has a porous matrix containing a silver dichromate reagent that gives a colorimetric response in the presence of halide ions and a cationic substance that prevents the formation of silver oxide products. The cationic substance has no colorimetric response in the presence of halide ions that would interfere with the measurement of the colorimetric change of the silver dichromate reagent.

REFERENCES:
patent: 4444193 (1984-04-01), Fogt et al.
patent: 4650768 (1987-03-01), Cahill et al.

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