Flow-through electrochemical sensor
US4902399A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 12, 1989 |
| Grant date | Feb 20, 1990 |
| Priority date | — |
| Expiry date | Apr 12, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/28
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An improved ISE is provided for measuring the concentration of an electrolyte in a sample in a centrifuge-type analyzer utilizing a multichamber test pack. The reference cell and sensor cell of the ISE are each comprised of an electrode, fill solution, housing and membrane in a fully self-contained configuration. Each cell is of sufficiently small size to fit in the test pack. The electrode of each cell is provided with screw threads to allow each cell to be screwed directly into the test pack thereby securing the cell to the test pack and at the same time providing a convenient electrical contact to the readout electronics of the test pack. With the present design manipulation of the ISE sensor output voltage can be achieved by varying the known ion concentration of the fill solution. Also provided is a novel method of introducing a fill solution into the cell after all of the cell components are in place.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.