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Gold or platinum electrodes are widely used in conductivity measurements on acids because it is well known that these metals are not readily attacked. The authors have observed the corrosion of stainless steel, gold and platinum electrodes when low‐frequency alternating currents were passed through concentrated acids. The corrosion was not evident at frequencies greater than a few kilocycles/sec. The mechanism of the corrosion is discussed and the application of the results to conductivity measurement is mentioned.
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Bentley et al. (1957) studied this question.
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