(Received 14 September 1972; accepted 12 December 1972)
Published Online: July
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Occasionally it is necessary in criminal investigations to compare oil stains on clothing with oil from a suspect automobile. The difficulties in identifying oil in such stains are complicated by the small size of sample which is normally available, by contaminants in the stain, and most of all by extraneous materials extracted from the cloth. Sometimes an additional complicating factor is the breakdown of the oil due to prolonged exposure, particularly to sunlight.
Chemistry Section, The Centre of Forensic Science, Toronto, Ontario
Stock #: JFS10452J