2,3,3',4,4',5,5'-Heptachlorobiphenyl, 5mg Back Catalog number: C-189N Availability: In the manufacturer's stock Price on request - + Recommended 0243.24-10MG Dibenzo[a,l]pyrene, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 191-30-0 Price on request 683832 Dioxabenzofos, 100 µg/ml, Acetonitrile, 1ml Price on request 2142.6-100K-RF tert-Amyl methyl ether + blank RFA, 10Wt%, Solvent-RFA gasoline, Unit 10mL, # of units-2+1, Cas.no. 994-05-8 Price on request