Reference electrode assembly
US6719888B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 29, 1997 |
| Grant date | Apr 13, 2004 |
| Priority date | — |
| Expiry date | Aug 29, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/301
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A reference electrode assembly having a constrained-diffusion liquid junction between a liquid junction solution and a sample solution having separate flow paths, said assembly comprising a flow cell having attached thereto a constraint comprising a region of porous material permeable to water and salts; a remote reservoir for holding said liquid junction solution; a means for moving said liquid junction solution from said reservoir to said constraint; and a reference contact region is provided. This unique configuration provides a reference electrode device of the constrained-diffusion liquid junction type useful in pH and/or ion-selective electrode (ISE) potentiometric sensors and is particularly suitable for use in a mini-integrated electrochemical analyzer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.