EPA Method 8270A Analytes

beta-Endosulfan, 100 µg/ml, Ethyl acetate, 5ml

Tri-o-tolyl phosphate, 1.2ml x 50ug/ml, toluene

1,2,3,7,8-Pentachlorodibenzo-p-dioxin, 1.2ml x 50ug/ml, nonane