EPA Method 531.1 - Analytes Back Catalog number: 30042 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 677990 Profenofos, 100 µg/ml, Toluene, 1ml Price on request 93063 Phenanthrene - 40% Price on request 677607 1H,1H,2H,2H-Perfluorooctanesulfonic acid, 10mg Price on request