Stabilized formazin composition

Details Stabilized formazin composition Stabilized formazin composition

1995-12-01

1998-07-07

Jagannathan, Vasu

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

524251, 524252, 524423, C08J 510, C08K 320

Patent

active

057770115

ABSTRACT:
Stabilized formazin compositions suitable as turbidity standards. The compositions can be prepared by diluting a concentrated formazin composition with a diluent containing hexamethylenetetramine and, optionally, a water-soluble sulfate salt such as sodium sulfate. The pH of the stabilized compositions is in the range of about 7 to 11.

REFERENCES:
patent: 3960493 (1976-06-01), Beitz et al.
patent: 4291980 (1981-09-01), Patterson
patent: 5093444 (1992-03-01), Uchida et al.
"The Preparation of Formazin Standards For Nephelometry", Rice, Analytica Chimica Acta, 87 (1976) 251-253.

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