EPA Method 507 Surrogate Standard Back Catalog number: 19049 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 43014 1-Fluoronaphthalene Price on request 682621 Dibutyl sebacate, 1000mg Price on request 0170.13-500-IO 1,3,7-Trimethylnaphthalene, 500µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 2131-38-6 Price on request