Patent ID: 7930110

Claim:
A method for determining biomass in a dielectric medium, in particular a medium comprising cells in suspension in a fluid, comprising: obtaining the biomass (X) from capacitance and conductance measurements that are carried out with a device comprising electrodes and electronic means for processing the capacitance and conductance signals obtained from said electrodes, the biomass (X) being determined from a difference (ΔC x (G,f 2 )) between: a first capacitance signal (C X — FG — C (G,f 2 )) of said medium, measured at a first frequency (f 2 ) and corrected according to at least one level of correction, this first level of correction comprising a step of correcting said first measured signal (Cm_(G, f 2 )) according to a model (Ccal(G, f 2 )) dependent on the conductance of the medium at said first frequency (f 2 ), and a second capacitance signal (Cm_cor(G,f 3 )) of said medium, measured at a second frequency (f 3 ) and corrected according to the at least one level of correction, this first level of correction comprising a step of correcting said second measured signal (Cm_(G, f 3 )) according to a model (Ccal(G, f 3 )) dependent on the conductance of the medium at said second frequency (f 3 ), wherein each of the measured signals is separately corrected according to the at least one level of correction.