2,2',3,4,4',5-Hexachlorobiphenyl (137) Back Catalog number: 66137 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 95450 PCB Congeners & Hexachlorobenzene Mix #1 Price on request 673916 Chloridazon-methyl-desphenyl, 10mg Price on request 0701.13-500-IO 1,2,4-Trimethylnaphthalene, 500µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 2717-42-2 Price on request