EPA Method 525 Pesticide Standard Sub Conc

Trimethoprim, 100 µg/ml, Methanol, 1ml

EPA Method 500 Internal Standard #6

n-Butylcyclohexane, 1000µg/mL, Solvent-cyclohexane, Unit 1mL, # of units-1, Cas.no. 1678-93-9