METHOD AND DEVICE FOR BIOMASS DETERMINATION IN A MEDIUM, IN PARTICULAR A MEDIUM CONTAINING BIOLOGICAL CELLS, AND MEASUREMENT APPARATUS IMPLEMENTING SAID METHOD

摘要

The invention concerns a method for biomass determination in a medium, in particular a medium containing biological cells suspended in a conductive fluid, the biomass concentration (X) being obtained from a difference between a first capacitance signal (C'1) of said medium, measured at a first frequency, and a second capacitance signal (C'2) of said medium, measured at a second frequency. The method comprises a separate correction of each of the measured signals, based at least on one correction level, said first correction level including a correction of said signals measured in accordance with a model dependent on the conductance of the medium at the first and second frequencies. The invention is useful in biomass measurement systems.