Microbial detection and enumeration method and apparatus
US4246343A · kind A · utility
38Cited by
2References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 2, 1979 |
| Grant date | Jan 20, 1981 |
| Priority date | — |
| Expiry date | May 2, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S435/817
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
The presence of microorganisms in a sample is determined by culturing micrganisms in a growth medium which is in contact with a measuring electrode and a reference electrode and detecting the change in potential between the electrodes which arises by the migration and accumulation of said microorganisms adjacent the surface of the measuring electrodes thus forming a charge-charge interaction between said measuring electrode and accumulated microorganisms, by measuring the potential change with a high impedance potentiometer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.