2,3,3',4,4',5,5'-Heptachlorobiphenyl, 5mg Back Catalog number: C-189N Availability: In the manufacturer's stock Price on request - + Recommended 675370 Sulfamethoxypyridazine, 250mg Price on request 680658 Sodium ethyl sulfate, 100mg Price on request 97131 Atrazine Price on request