2,3,3',4,4',5'-Hexachlorobiphenyl (157) Back Catalog number: 68157 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 677066 3-(4-tert-Butylphenyl)isobutyraldehyde, 250mg Price on request 93595 EPA Method 8141 Standard Price on request 673416 Promecarb, 10.0 µg/ml, Acetonitrile, 10ml Price on request