Method, device and test reagent for detecting free available chl

Details Method, device and test reagent for detecting free available chl Method, device and test reagent for detecting free available chl

1977-05-20

1978-05-30

Reese, Robert M.

Chemistry: physical processes

Physical processes

Crystallization

23253TP, 252408, G01N 3122, G01N 3318

Patent

active

040921158

ABSTRACT:
A method, device and test reagent for detecting free available chlorine in aqueous fluids which utilizes as an indicator substance azine compounds of the formula: ##STR1## where R and R' are hydroxy or amino substituents and X, X', Y and Y' are hydrogen, hydroxy, methyl or methoxy substituents and may be the same or different. Preferably such test reagents are incorporated with a carrier member or with a wicking device for concentrating the aqueous fluid being tested in the area of the test reagent.

REFERENCES:
patent: 2385471 (1945-09-01), Scharer
patent: 3008879 (1961-11-01), Harvill
patent: 3104209 (1963-09-01), Scott
patent: 3233974 (1966-02-01), Bradley

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