EPA Method 551 Analytes Back Catalog number: 32095 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 676773 4,4'-Diaminodiphenyl sulfide, 250mg Price on request 91515 8260 Surrogates / Internals Standard Price on request 8370.6-25MG 4-Bromo-2,3,5,6-tetrachloroaniline, neat, Solvent-neat, Unit 25mg, # of units-1, Cas.no. Price on request