PCB No. 31, certified, 25mg Back Catalog number: C20003100 Availability: In the manufacturer's stock Price on request - + Recommended 94945 Chlorinated Pesticides Mix#1, 10ug/ml in MeOH, 1ml Price on request DF-LCS-B Mass-Labelled PCDD/PCDF Solution/Mixture, 1.2ml, nonane Price on request 59252 Metals Mix Price on request