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The construction of a compact rotating ring-disc electrode with a removable disc electrode is described and performance characteristics measured for rotational speeds up to 4900 rpm between 25° and 94 °C using the ferrocyanide–ferricyanide couple. The electrode is spun with a conventional laboratory stirrer and includes several electrode tips with different ring materials. Each tip can accommodate demountable discs of the material required for study. The electrode tips demonstrated in this paper have a high collection efficiency (0.55) which is remarkably insensitive to mismatch between the ring and disc plane. The electrode has a proven leak-free operation even in very hot solutions.