2,3,3',4,4',5,5'-Heptachlorobiphenyl, 5mg Back Catalog number: C-189N Availability: In the manufacturer's stock Price on request - + Recommended 676898 Cyanamide, 100mg Price on request 673514 Chlorthion, 100 µg/ml, Ethyl acetate, 5ml Price on request 91544 Volatile Mix #3 VOC - FID Price on request