Heptachlor endo-epoxide, 100 µg/ml, Methanol, 1m

4,4'-Diaminobiphenyl-d8 (Rings-d8)

3 Deuterated Compounds Internal Standard Mix 3 Analytes, each Wt.% as listed; units: 1x10mL, 5x10mL neat Name Wt.% Name Wt.% Benzene-d6 39.7 Naphthalene-d8 20.9 Ethylbenzene-d 10 39.3

2,3,3',4',5,5'-Hexachloro[13C12]biphenyl, 1.2ml x 50ug/ml, nonane