2,4'-DDE, 10.0 µg/ml, Ethyl acetate, 10ml

Trimethoprim, 100μg/mL in Acetonitrile, 1ml

1-Methyl-4-n-propylbenzene, 1000µg/mL, Solvent-hexane, Unit 1mL, # of units-1, Cas.no. 1074-55-1

Triazophos, 100µg/ml in Cyclohexane, 5ml