pH measurement of an aqueous sample
US11169112B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 31, 2019 |
| Grant date | Nov 9, 2021 |
| Priority date | — |
| Expiry date | Jul 10, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/302
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An embodiment provides a method for measuring pH in an aqueous sample with a frit-less electrode, including: introducing an aqueous sample into a measurement device comprising at least three electrodes, wherein at least one electrode of the at least three electrodes comprises a ground rod electrode, wherein at least one electrode of the at least three electrodes comprises a first measurement electrode, and wherein at least one electrode of the at least three electrodes comprises a second measurement electrode; measuring a first electrical potential between the first measurement electrode and the ground rod electrode in the aqueous sample; measuring a second electrical potential between the second measurement electrode and the ground rod electrode in the aqueous sample; and identifying a pH of the aqueous sample based upon a difference between the first electrical potential and the second electrical potential. Other aspects are described and claimed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.