Differential pH probe
US8366895B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 6, 2006 |
| Grant date | Feb 5, 2013 |
| Priority date | — |
| Expiry date | Jun 19, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/4035
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A differential pH probe design uses a container having an outer surface and an inner volume, where the inner volume is divided into a first chamber and a second chamber. A first pH-sensitive area is located on the outer surface of the first chamber where the first pH-sensitive area is configured to be exposed to a sample. A second pH-sensitive area is located on the outer surface of the second chamber where the second pH-sensitive area is shielded from the sample and is exposed to a buffer solution. A first electrode is configured to detect a first voltage in the first chamber and a second electrode is configured to detect a second voltage in the second chamber. Circuitry is coupled to the first and second electrodes and configured to process the first voltage and the second voltage to determine a pH of the sample.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.