PCB No. 31, certified, 25mg Back Catalog number: C20003100 Availability: In the manufacturer's stock Price on request - + Recommended 3214.18-K-IO 11-trans-Octadecenoic acid, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 693-72-1 Price on request 2258.12-50-IO 3'-Fluoro-2,4-dibromodiphenyl ether, 50µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. Price on request 92405 Chlorinated Pesticides Price on request