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Trace Metals Analysis on Small Oil Samples
Volume 27, Number 6 (Dec. 1973) Page 490-490
Woods, Harry P.
The use of direct reading emission spectrographs is a well known means of analyzing used crankcase oils for trace metals. The analysis can be accomplished without any sample preparation by employing a rotating graphite disc as one of the electrodes. A graphite rod is used as the counterelectrode. The disc, as it rotates, is partially immersed in the sample, and thus a fresh supply of oil is continuously presented to the discharge gap.