Naphthalene, 100 µg/ml, Cyclohexane, 1ml

Oxytetracycline hydrochloride, 10 µg/ml, Methanol

D5-Fenuron, 100 µg/ml, Acetonitrile, 1ml

2,3,4,5-Tetrachloro-4'-methoxy[13C12]biphenyl, 1.2ml x 50ug/ml, toluene