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Polynuclear Aromatic Hydrocarbons Mix, certified reference material, 2000 μg/mL each component in benzene: dichloromethane (50:50), ampule of 1 mL
Polynuclear Aromatic Hydrocarbons Mix, certified reference material, TraceCERT®, 2000 μg/mL each component in methylene chloride: benzene (1:1)