EPA Method 8260B Mix #4 Back Catalog number: 82466 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 11704.12-100-IO 2,4,4',6-Tetrachlorobiphenyl ,100 µg/mL,isooctane,1mL, Price on request 66128 2,2’,3,3’,4,4’-Hexachlorobiphenyl (128) Price on request 56156 Barium (Ba) Price on request