Capillary bridge in apparatus for determining ionic activity
US4273639A · kind A · utility
69Cited by
2References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 20, 1979 |
| Grant date | Jun 16, 1981 |
| Priority date | — |
| Expiry date | Jun 20, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/307
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A device is disclosed for determining ion activity in liquid solutions by the use of electrodes over which a cover sheet with an internal capillary bridge promotes ionic migration between the electrodes. The cover sheet is formed of a porous material ribbon encapsulated in a nonporous web. Preferably, the cover sheet is punched at each electrode to provide fluid access holes for receiving drops of liquid solutions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.