Metronidazole, 100 µg/ml, Acetonitrile, 1ml

9,10-Dihydrobenzo[a]pyren-7(8H)-one, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 3331-46-2

Benzo(e)pyrene, 100µg/ml in Cyclohexane, 5ml

COD Calibration Standard