Nitrapyrin, 10 µg/ml, Ethyl acetate, 10ml

EPA Method 502/524 Volatile Standard

Pirimiphos-methyl, 100 µg/ml, Acetonitrile, 1ml

2,3,7,8-Tetrabromo[13C12]dibenzo-p-dioxin, 1.2ml x 50ug/ml, toluene