4-Nitrophenol, 10.0 µg/ml, Acetonitrile, 10ml

a-1,2,3,4,5,6-Hexachloro(13C6)cyclohexane, 1.2mL x 100ug/mL, nonane

Fluometuron, 100 µg/ml, Acetonitrile, 5ml

17?(H),21ß(H)-(22R)-Homohopane, 500µg/mL in Isooctane, 1mL