EPA Method 551.1 Internal Standard Back Catalog number: 32103 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 8889.14-K-IO Diethyl sebacate, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 110-40-7 Price on request 90968 1,4-Difluorobenzene Price on request 1987.6-K-5ME Monophenyltin trichloride, 1000µg/mL, Solvent-methanol, Unit 5mL, # of units-1, Cas.no. 1124-19-2 Price on request