Determination of calcium
US3938954A · kind A · utility
9Cited by
0References
8Claims
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Assignee
Inventors
Key dates
| Filing date | Jan 20, 1975 |
| Grant date | Feb 17, 1976 |
| Priority date | — |
| Expiry date | Jan 20, 1995 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/84
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An improved reagent system for determining calcium by the orthocresolphthalein complexone color reaction. The reagent utilizes an alkaline buffer containing an aminoloweralkanol providing a pH of about 10.2 - 10.5. A method for using the reagent is also described. The composition is stable for extended periods.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.