2,2’,3,4’,5,5’,6-Heptachlorobiphenyl (187) Back Catalog number: 66187 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 97344 2,4-Dimethylaniline Price on request 53068 Spiking Standard Kit Price on request 52144 EPA 1638Mix A Price on request