Determination of biomass
US4810650A · kind A · utility
27Cited by
12References
12Claims
0Family size
Inventors
Key dates
| Filing date | Sep 22, 1987 |
| Grant date | Mar 7, 1989 |
| Priority date | — |
| Expiry date | Sep 22, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/48735
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Apparatus for the determination of biomass in a suspension and its use in a fermentation apparatus. The apparatus includes electrodes to be placed in the suspension and the following other components: circuit for applying an alternating voltage between the electrodes; circuit for providing a current signal indicative of the current in the current electrode circuit; circuit for providing a voltage signal indicative of the voltage between the ratio between the value of the voltage signal and the value of a quadrature component of the current signal, or vice versa, to provide a capacitance dependent signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.