Naproxen, 100µg/ml in MeOH, 1ml

Fluazifop-P-butyl, 100µg/ml in Acetonitrile, 5ml

Propyphenazone, neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. 479-92-5

EPA Method 537 Surrogate Primary Dilution Standard (SUR PDS), 1.2ml, methanol