beta-HCH, 100 µg/ml, Methanol, 1ml

EPA Method 502.2/524.2 - Liquids, VOC, 200ug/ml in MeOH, 1ml

Sterigmatocystine, 50µg/mL, Solvent-acetonitrile, Unit 5mL, # of units-1, Cas.no. 10048-13-2

1-Chloro-4-nitrobenzene