Reference electrode
US4980043A · kind A · utility
16Cited by
1References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 24, 1987 |
| Grant date | Dec 25, 1990 |
| Priority date | — |
| Expiry date | Nov 24, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/301
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In a sheet type reference electrode having a gelatinized internal solution, a liquid junction surface of the gelatinized internal solution is coated with a hydrophilic porous thin film. Alternatively, a liquid junction member contacts the gelatinized internal solution and is coated with a hydrophilic porous thin film. In either event, the thin film controls the diffusion of ions from the gelatinized internal solution. A liquid junction portion is also provided by impregnating a chemically stabilized, hydrophilic, high molecular porous material with a gelatinized composition which remains wet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.