13C6-Hexachlorobenzene, 100 µg/ml, Cyclohexane,

2-Ethylhexyldiphenyl phosphate,1000 µg/mL,isooctane,1mL

Fluroxypyr, 100 µg/ml, Acetonitrile, 5ml

D8-N-Nitrosobis(2-hydroxyethyl)amine, 10mg