Patent ID: 7927010

Claim:
A method of measuring the electrical conductivity of a bio-processing fluid, comprising: providing a particular pre-sterilized disposable electrical conductivity sensor assembly having a sensor component, a memory component and a conduit for directing a bio-processing fluid for electrical interaction with the bio-processing fluid flowing through the conduit; running a bio-processing fluid through the conduit of the particular electrical conductivity sensor assembly; passing a current through the particular electrical conductivity sensor component during said running of the bio-processing fluid through the conduit and measuring a resulting change in an electrical value across the sensor component, said change in electrical value being indicative of a measured electrical conductivity value of the bio-processing fluid; retrieving a sensor-specific constant stored on the memory component of the particular electrical conductivity sensor assembly; and calculating the actual electrical conductivity of the bio-processing fluid, said calculating comprising mathematically combining the measured electrical conductivity value with said stored constant.