Hitachi, Ltd.

Masao Endo

Shunsuke Uchida

Yamato Asakura

Masami Matsuda

Kazumichi Suzuki

A method and apparatus for analyzing the electrode impedance, in which an a.c. voltage with its frequency varied at intervals is applied between a pair of measuring electrodes dipped in the sample liquid, the complex a.c. impedance between the electrodes is measured at each frequency, the maximum value among absolute values of imaginary part of the measured impedance values is detected as the electrode polarization resistance, and the solution resistance of the liquid is calculated by subtracting the detected maximum value from the real part of the impedance corresponding to the maximum imaginary part.

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Hitachi, Japan

Masao Endo