EPA Method 551 - Disinfection By-Products Back Catalog number: 32852 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 73384 2,4-Dinitrodiphenylamine Price on request S-4458-400-IO ISO 10382Multicomponent Solution of PCBs and Organochlorine pesticides + injection standards. each 400µg/mL in isooctane; unit: 1x1mL Polychlorinated biphenyls 1999.12-100-IO 2,4,4’-Trichlorobiphenyl PCB-28 7012-37-5 Price on request 90848 Acetophenone Price on request