Omeprazole, 1000µg/ml in MeOH, 1ml

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

4,4'-DDE, 10.0 µg/ml, Ethyl acetate, 10ml

1,2-Dichlorobenzene, 1000mg