EPA Method 537 Analyte Primary Dilution Standard, 2000ng/ml in MeOH, 1,2ml Back Catalog number: EPA-537PDSL-R1 Availability: In the manufacturer's stock Price on request - + Recommended C14995000-5ML Methanol, 5ml Price on request 2958.8-100-AN Methyl parathion-d6 (dimethyl-d6), 100µg/mL, Solvent-acetonitrile, Unit 1mL, # of units-1, Cas.no. 96740-32-8 Price on request 676107 Fenitrothion, 250mg Price on request