Chlorthion, 100 µg/ml, Ethyl acetate, 5ml

Trimethoprim, 100 µg/ml, Methanol, 1ml

n-Hydrocarbon Standard (C5-C15), 2000µg/mL in MeOH, 1ml

N-Nitrososarcosine, 1000µg/mL, Solvent-acetonitrile, Unit 1mL, # of units-1, Cas.no. 13256-22-9