Apparatus for maintaining the activity of an enzyme electrode
US5288387A · kind A · utility
87Cited by
5References
3Claims
0Family size
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Key dates
| Filing date | Jun 10, 1991 |
| Grant date | Feb 22, 1994 |
| Priority date | — |
| Expiry date | Jun 10, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12Q1/001
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
A concentration measuring apparatus includes an enzyme electrode which accelerates an oxidation reaction or a reduction reaction of a test substance in a liquid and outputs an electrical signal corresponding to a quantity of the test substance therefrom due to the reaction. The enzyme electrode is supplied with a reviving voltage for removing interfering substances on the enzyme electrode not only prior to concentration measuring but also according to a predetermined time interval. The reviving voltage has a polarity which is the reverse of the voltage used for concentration measurement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.