EPA Method 515.1 Internal Standard Back Catalog number: 30023 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2855.14-50-ME 1H,1H-Perfluorotetradecan-1-ol , 50µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 15622-57-8 Price on request 15900-5830-100AN5 lambda-Cyhalothric acid, 100µg/ml in Acetonitrile, 5ml Price on request X9163 Aroclor 1248 Price on request