2,3,4,6-Tetrachlorophenol, 100 µg/ml, Methanol,

D6-Dimethoate, 10 µg/ml, Ethyl acetate, 10ml

Tin (Sn), 1000µg/ml in in 2%-HNO3 / 6%-HCl, 100ml

EPA Method 610 PAH Mix, in MeCH:MeOH, 1ml