Butralin, 10.0 µg/ml, Ethyl acetate, 10ml

Metobromuron, 1000µg/ml in Acetonitrile, 1ml

17 alpha(H),21ß(H)-(22R)-Homohopane, 50µg/mL in isooctane, 1ml

4,4’-Methylenedianiline