Chemical testing systems

Details Chemical testing systems Chemical testing systems

1976-01-22

1980-01-01

Marcus, Michael S.

Chemistry: physical processes

Physical processes

Crystallization

23925, 252408, 422 58, 422 56, G01N 3122, G01N 3116

Patent

active

041815009

ABSTRACT:
A test system and method is described for determining if a material (e.g. uric acid) oxidizable by iodine is present in an aqueous fluid in an amount equal to or greater than a predetermined amount and which includes a dry solid iodine indicator and a dry solid means for rapidly generating iodine in situ upon activation thereof to color said indicator, said system preferably being in test strip form.
As another feature of this invention there is provided a solid source of basic anions capable upon activation of neutralizing excess protons remaining after generating iodine in situ to permit rapid oxidation of the material oxidizable by said iodine without substantially interfering with the rapid generation of said iodine.

REFERENCES:
patent: 2785057 (1957-03-01), Schwab et al.
patent: 3485587 (1969-12-01), Keston
patent: 3523011 (1970-08-01), Bhiwandker et al.
patent: 3552928 (1971-01-01), Fetter
patent: 3673183 (1972-06-01), Erickson
patent: 3711252 (1973-01-01), Roy
patent: 3783105 (1974-01-01), Moyer et al.
patent: 3810739 (1974-05-01), Nussbaum
Larson et al., Anal. Chem. 25,802 (1953).

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