Determining the concentration of a biocide additive in a liquid

Details Determining the concentration of a biocide additive in a liquid Determining the concentration of a biocide additive in a liquid

1976-03-22

1977-07-19

Reese, Robert M.

Chemistry: physical processes

Physical processes

Crystallization

252327, 252329, B01D 1704, G01N 3316

Patent

active

040365891

ABSTRACT:
A method and a kit for testing the biocide concentration of a liquid containing a biocide of the type which breaks down in acidic aqueous solution to liberate formaldehyde. A strong aqueous acid is added to the liquid, and a modified Schiff's reagent is also added. Time is given for color to develop, and then the color intensity of the solution is read. In instances where oil-water emulsions or latices are involved, the emulsion is broken before adding the Schiff's reagent.

REFERENCES:
patent: 1771096 (1930-07-01), Penn
patent: 2504019 (1950-04-01), Hall
patent: 3673183 (1972-06-01), Erickson
Hoffpavir et al. Anal. Chem. 15,605(1943).
M. Beroza, Anal. Chem. 26, 1970(1954).
Sawicki et al. Anal. Chem. 34,1460(1962).
Skelley et al., Clin. Chem. 19,146,156(1973).
Aloe Chemical Catalog 103,1952, pp. 127, 129, 1010.

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