EPA Method 508 - Performance Check Solution Back Catalog number: 19132 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 677817 Ethoprophos, 100 µg/ml, Acetonitrile, 1ml Price on request 50246 ICP-MS Internal Standard Price on request MFHET 2-Perfluorohexyl-[1,1-2H2]-[1,2-13C2]-ethanol (6:2), 50µg/ml in MeOH, 1,2ml Price on request