Test composition for detecting urobilinogen

Details Test composition for detecting urobilinogen Test composition for detecting urobilinogen

1976-05-10

1976-11-02

Reese, Robert M.

Chemistry: physical processes

Physical processes

Crystallization

23230B, 252408, G01N 2106, G01N 3122, G01N 3316

Patent

active

039894622

ABSTRACT:
4-Fluoro-3-nitrobenzenediazonium salts in test compositions capable of specific and sensitive determination of urobilinogen without any interference of bilirubin in an aqueous solution or body fluid such as urine. The diazonium salts have incorporated special stabilizing anions. In addition to a 4-fluoro-3-nitrobenzene diazonium salt, the test compositions preferably include an acid constituent capable of producing an acid pH upon contacting the solution to be tested. The test device comprises a bibulous carrier member, such as paper impregnated with the test composition in dry form.

REFERENCES:
patent: 3446599 (1969-05-01), Shand
patent: 3630680 (1971-12-01), Rittersdorf et al.
patent: 3814586 (1974-06-01), Fraser, Jr. et al.
patent: 3850576 (1974-11-01), Rittersdorf et al.
patent: 3853466 (1974-12-01), Rittersdorf et al.

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