EPA Method 515.1 Internal Standard Back Catalog number: 31023 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 9710.6-100-ME 2,5-Dihydroxymethylfuran, 100µg/mL, Solvent-, Unit 1mL, # of units-1, Cas.no. 1883-75-6 Price on request 679106 Undecane, 1ml Price on request 71854 Benzo(c)phenanthrene Price on request