EPA Method 507Mix #7 Back Catalog number: 91185 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended M5PFHXA Perfluoro-n-[1,2,3,4,6-13C5]hexanoic acid, 50µg/ml in MeOH, 1,2ml Price on request 672951 Colistin sulfate, 100mg Price on request 33101 1,1,2-Trichlorotrifluoroethane Price on request