4-n-Nonylphenol D8 (ring D4-ethylD4), 100 ng/µl, 1.1ml

1,2,3,4,7,8,9-Heptachloro[13C12]dibenzofuran, 1.2ml x 50ug/ml, toluene

EPA Method 8260 Internal & Surrogate Standard

Ethidimuron, 10 µg/ml, Acetonitrile, 10ml