Test means and method for interference resistant determination of oxidizing substances
US4119405A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 13, 1978 |
| Grant date | Oct 10, 1978 |
| Priority date | — |
| Expiry date | Feb 13, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/144444
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
Test means, such as a composition or device, method of making a test device and process for determination of at least one oxidizing substance, such as a peroxide, are disclosed. More particularly, the contemplated test means comprises a hydrazone and a hydroxynapthalenesulfonate selected from the group 4,5-dihydroxy-2,7-naphthalene disulfonic acid (chromotropic acid) and 1-hydroxy-2-naphthalene sulfonic acid. Further provided is a test system for the determination of a constituent in a sample, having means responsive to the presence of said constituent in said sample to produce at least one oxidizing substance and a composition for determining said at least one oxidizing substance, having the improvement wherein said composition comprises a hydrazone and a hydroxynapthalenesulfonate selected from the group of 4,5-dihydroxy-2,7-naphthalene disulfonic acid and 1-hydroxy-2-naphthalene sulfonic acid. The test system is preferably of the type which determines peroxides formed from enzymatic conversion of constituents in biological fluids. When in the form of compositions the test means can optionally be incorporated with a carrier, such as a tablet or matrix, to provide a test device. T…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.