PCB No. 4, certified, 25mg Back Catalog number: C20000400 Availability: In the manufacturer's stock Price on request - + Recommended 2126.12-K-IOX10 Arochlor 1242 , 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-10, Cas.no. 53469-21-9 Price on request 2595.36 Dibenzo[lm,yz]pyranthrene, Please inquire, Solvent-, Unit , # of units-, Cas.no. 191-06-0 Price on request 66166 2,3,4,4',5,6-Hexachlorobiphenyl (166) Price on request