Disposable chemical indicators

Details Disposable chemical indicators Disposable chemical indicators

1977-01-12

1977-11-22

Serwin, R.E.

Chemistry: physical processes

Physical processes

Crystallization

23230B, 1951035C, 195127, G01N 3316

Patent

active

040594076

ABSTRACT:
A disposable indicator is disclosed which is useful for the measurement of ketones, proteins including albumin and uric acid in biological fluids. The instrument registers the concentration of substance in a given biological fluid with indicia which are directly readable in a convenient notation system (e.g., digital or other symbolic notation). The indicator comprises an improvement over prior art disposable devices which require a comparison of the viewable indication with a color intensity scale to translate the indicia registered to meaningful numerical values or other symbolic notations. The indicator permits the use of chemical reagent concentrations which are at least an order of magnitude greater than those used in prior art, thereby improving stability and drastically lowering the magnitude of interferences.

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