beta-HCH, 10.0 µg/ml, Ethyl acetate, 10ml

Iprodione, 100 µg/ml, Acetonitrile, 5ml

2,2',3,4,4',5,5'-Heptachloro[13C12]diphenyl ether, 1.2ml x 50ug/ml, nonane

EPA Method 8040 - Surrogate Standard