EPA 1638Mix A Back Catalog number: 52144 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1004.8-1ML Di-tert-butylsulfide, neat, Solvent-neat, Unit 1mL, # of units-1, Cas.no. 107-47-1 Price on request 2687.18-K-IO Hexaethylbenzene, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 604-88-6 Price on request 95338 PAH Standard Price on request