2,4'-DDD, 10.0 µg/ml, Ethyl acetate, 10ml

1,2,3,4,6,9-Hexachloro[13C12]dibenzofuran, 1.2ml x 1ug/ml, nonane

N-Methyldiethanolamine

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