PCB No. 31, certified, 25mg Back Catalog number: C20003100 Availability: In the manufacturer's stock Price on request - + Recommended 9774.4-1G 2,3-Butandione, neat, Solvent-neat, Unit 1G, # of units-1, Cas.no. Price on request 70064 cis-Chlordane Price on request 92693 EPA Method 525.2 Standard Price on request