FIELD: chemistry.
SUBSTANCE: standard sample composition contains an aprotic organic solvent, an oil product and a stabiliser, where the aprotic organic solvent is tetrchloroethylene which is pre-purified from impurities. The oil product has boiling point over 70°C and the stabiliser is a hydroxyl-containing organic compound taken in amount of at least 0.025 g/dm3. Use of the standard sample enables to check correctness of the method of measuring content of oil products in aqueous media through infrared spectrometry based on tetrachloroethylene as a solvent-extractant, as well as calibration and directly checking measurement apparatus.
EFFECT: more reliable measurement results.
19 cl, 9 ex, 2 tbl
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