2,2',3,3',4,5,6,6'-Octachlorobiphenyl (200)

N-Nitroso-N-ethylurea

Alkane/Hopane Mix S-4100 0132,30 17 alpha(H), 21ß(H)-Hopane 0.1 mg/ml 13849-96-2 0627,15 Farnesane 1.0mg/ml 3891-98-3 0629,20 Phytane 1.0mg/ml 638-36-8 0628,18 Norpris

3,3´-Dimethoxybenzidine, certified, 0.1g