EPA Method 551.1 Surrogate Standard Back Catalog number: 31102 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 79129 2,3,5,6-Tetrachlorophenol Price on request BPF 4,4'-Dihydroxydiphenylmethane, 1.2ml x 50ug/ml, methanol Price on request 79150 4,4’-DDT Price on request