Method for monitoring and controlling biological activity in fluids
US5698412A · kind A · utility
8Cited by
6References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 7, 1996 |
| Grant date | Dec 16, 1997 |
| Priority date | — |
| Expiry date | Nov 7, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/1866
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of monitoring a microbiological process in a fluid supply involving isolation of a fluid sample from a fluid supply, measuring the pH of the fluid sample at selected time intervals, then analyzing changes in pH, if any, to determine a pH production rate for the sample. Changes in pH production rate are then analyzed to determine when the pH production rate changes from a negative value to zero and/or to zero for the second time as an indicator of nitrification time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.