EPA Method 548.1 Analyte Back Catalog number: 30277 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 71578 2,4-Dinitrophenol-PFB derivative Price on request 10641.15-10MG RPA 202248 (a metabolite of isoxaflutol), 10mg Price on request 31005 EPA Method 502/524 Fortification Solution Price on request