gamma-HCH, 10 µg/ml, Acetonitrile, 10ml

2,2',3,4',5,5',6-Heptachloro-4-methoxy[13C12]biphenyl, 1.2ml x 50ug/ml, toluene

EPA Method 8260 Internal & Surrogate Standard

D3-Testosterone 3-phenylpropionate, 5mg