Trimethoprim, 100 µg/ml, Methanol, 1ml

Fenitrothion-d6 (O,O-dimethyl-d6), 100µg/ml in Acetone, 1ml

EPA Method 608 Pesticides

U{13C17}-Aflatoxin B2, 0.5µg/mL, Solvent-acetonitrile, Unit 1.2mL, # of units-1, Cas.no.