EPA Method 504 Back Catalog number: 81806 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 3338.12-100-AN Chlorfenvinphos, 100µg/mL, Solvent-acetonitrile, Unit 1mL, # of units-1, Cas.no. 470-90-6 Price on request 72706 Triflusulfuron-methyl, 1000µg/ml in Acetone, 1ml Price on request C17875000 Trimethoprim, certified, 0.25g Price on request