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Disposable, pre-calibrated, pre-validated sensors for use in bio-processing applications

  • US 7,927,010 B2
  • Filed: 07/20/2007
  • Issued: 04/19/2011
  • Est. Priority Date: 12/05/2005
  • Status: Active Grant
First Claim
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1. 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.

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