FIELD: analytical methods. SUBSTANCE: invention is intended to by, in particular, applied to compressed and oxidizable gas mixtures. Oil is sorbed when test sample is passed through sorbent in separate sorption cartridge, after which sorbent is washed out with organic solvent into indicator tube and oil content is determined from length of colored layer of indicator tube. As sorbent, activated alumina is utilized. EFFECT: enlarged analysis area. 2 cl, 2 dwg, 1 tbl
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