Device for providing a means for internal calibration in an electrochemical sensor
US9347907B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 30, 2014 |
| Grant date | May 24, 2016 |
| Priority date | — |
| Expiry date | Sep 30, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S977/742
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Internally calibrated pH and other analyte sensors based on redox agents provide more accurate results when the redox active reference agent is in a constant chemical environment, yet separated from the solution being analyzed in such a way as to maintain electrical contact with the sample. Room temperature ionic liquids (RTIL) can be used to achieve these results when used as a salt bridge between the reference material and the sample being analyzed. The RTIL provides the constant chemical environment and ionic strength for the redox active material (RAM) and provides an electrolytic layer that limits or eliminates direct chemical interaction with the sample. A broad range of RAMs can be employed in a variety of configurations in such “Analyte Insensitive Electrode” devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.