2,3,3',4'-Tetrachlorobiphenyl (56) Back Catalog number: 63056 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 680434 Zolpidem tartrate, 100 µg/ml, Methanol, 1ml Price on request 19108 EPA Method 8120 - Chlorinated Hydrocarbons Price on request 677894 Mevinphos, 100 µg/ml, Ethyl acetate, 1ml Price on request