Permethrin, 100 µg/ml, Ethyl acetate, 5ml

Perfluoro-n-[1,2-13C2]dodecanoic acid, 50µg/ml in MeOH, 1,2ml

3,4,5-Tribromobiphenyl, 1.2ml x 50ug/ml, nonane

EPA Method 531.1 - Analytes Mixture