EPA Method 525.2 Standard Back Catalog number: 92694 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 63128 2,2’,3,3’,4,4’-Hexachlorobiphenyl (128) Price on request 94724 4,4’-Thiodianiline Price on request 34501 2,2-Dimethylbutane Price on request