2,3,3',4,4',5,5'-Heptachlorobiphenyl, 5mg Back Catalog number: C-189N Availability: In the manufacturer's stock Price on request - + Recommended 676268 Fenthion-oxon-sulfoxide, 100 µg/ml, Acetonitrile, Price on request 54460 Linear Alkylate Benzene Sulfonate Price on request 66215 Group 4 PCB’s - Mix Type / Low Incidence Price on request