o-Toluidine-d9,1000 µg/mL,acetonitrile,1mL,

N-Nitrosopiperidine, 2000µg/mL, Solvent-dichloromethane, Unit 1mL, # of units-1, Cas.no. 100-75-4

Pentachlorophenol 13C6, certified, 10mg

4,4'-DDT, 10.0 µg/ml, Cyclohexane, 10ml