| Abstract: | The resistivity of canine blood was measured at 37°C over a hematocrit range of 0 to 81 percent, with a variable-length conductivity cell similar to one developed by Dr. L. A. Geddes of Purdue University and his associates. Two different electrode materials were used. A vector impedance meter generating a 25 kHz signal was utilized in the measurement process. The data obtained with each electrode material was expressed by a least-squares exponential fit relating resistivity and hematocrit. Additional testing obtained data illustrating the temperature dependence of blood resistivity. The measurement system and technique were analyzed, and recommendations for future investigations were proposed |
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