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  • Title: A PCO2 surface electrode working on the principle of electrical conductivity.
    Author: Lis K, Acker H, Lübbers DW, Halle M.
    Journal: Pflugers Arch; 1979 Sep; 381(3):289-91. PubMed ID: 574639.
    Abstract:
    A PCO2 electrode working on the principle of electrical conductivity is described. The calibration curve can be linearized according to the formula G = Go + b square root PCO2. This linearity has been tested in the PCO2 range of 0.93-9.33 kPa (7--70 Torr). For the experiments electrodes are used which have conductivity values of about 50 nS and drifts of maximally 5%/h at a PCO2 of 5.33 kPa (40 Torr). The response time (T90) is about 20 s. The temperature sensitivity is 2.4 nS/1 K between 298 K-310 K. The standard error of the measurements is sigma = 0.33 nS. With these electrodes tissue PCO2 can be measured on the surface of various organs.
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