Chemistry: molecular biology and microbiology – Measuring or testing process involving enzymes or... – Involving oxidoreductase
Patent
1997-03-19
1998-09-22
Leary, Louise N.
Chemistry: molecular biology and microbiology
Measuring or testing process involving enzymes or...
Involving oxidoreductase
435 25, 435 4, 436 63, 436101, 423462, 423500, C12Q 128, C12Q 126, C12Q 100, G01N 3300
Patent
active
058112545
ABSTRACT:
A composition, method, and test device for determining the total available chlorine concentration of a test sample are disclosed. The test device includes a test pad having a suitable carrier matrix incorporating an indicator reagent composition capable of converting combined available chlorine to free available chlorine and of interacting with free available chlorine to produce a detectable and measurable response for total available chlorine over a range of 0 to over 5000 ppm total available chlorine in the test sample. An indicator reagent composition contains: (a) an indicator dye that is responsive to free available chlorine, such as tetramethylbenzidine, (b) a buffer, (c) a surfactant, (d) an optional catalyst, and (e) an optional polymer. An indicator reagent composition is incorporated into a carrier matrix, like filter paper, to provide a test pad useful in a dry phase total available chlorine assay of a test sample, such as a sanitizing solution for a hemodialysis unit.
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Integrated Biomedical Technology Inc.
Leary Louise N.
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