EPA Method 1666 Standard #1 Back Catalog number: 82449 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 66174 2,2',3,3',4,5,6'-Heptachlorobiphenyl (174) Price on request 52017 ICP-AES - Verification I Standard 1 Price on request 679916 2,3-Dichlorophenol, 250mg Price on request