4,4'-DDE, 100 µg/ml, Toluene, 5ml

1H-1,2,4-Triazole, 100μg/ml in Acetonitrile, 5ml

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

2,3,6,8-Tetrachlorodibenzofuran, 1.2ml x 50ug/ml, nonane