EPA Method 549.1 Analytes Back Catalog number: 32079 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 687732 Perfluorotetradecanoic acid, 50mg Price on request 676746 Sodium perchlorate monohydrate, 250mg Price on request 95457 BTEX, MTBE, Naphthalene Price on request