Urine pH indicator system and associated methods

Details Urine pH indicator system and associated methods Urine pH indicator system and associated methods

1998-05-18

2000-12-19

Markoff, Alexander

Chemistry: analytical and immunological testing

Optical result

Including reagent preparation

436163, 422 56, G01N 2180, G01N 2178, G01N 2177

Patent

active

061626465

ABSTRACT:
A urine pH indicator has a plurality of hydrophilic, non-ionic, polymer foam carrier particles. The carrier particles are impregnated with an indicator complex having more than one chromophore and indicating more than one pH threshold via at least three distinguishable colors. The carrier particles are preferable chopped and soaked in a solution containing the chromophore complex. Upon evaporation of the solvent, the chromophore complex is bound to the carrier particles which can then be spread upon animal litter to receive urine and indicate pH via color display.

REFERENCES:
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patent: 5143023 (1992-09-01), Kuhns
patent: 5267532 (1993-12-01), Franklin et al.
patent: 5409472 (1995-04-01), Rawlings et al.
patent: 5415131 (1995-05-01), Dodman
patent: 5468450 (1995-11-01), Michael
patent: 5578317 (1996-11-01), Mulder

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