PCB No. 4, certified, 25mg Back Catalog number: C20000400 Availability: In the manufacturer's stock Price on request - + Recommended DFP-LCS-B100 Mass-Labelled PCDDs/PCDFs/PCBs Solution/Mixture, 1.2ml, nonane Price on request 672929 Hexazinone, 100mg Price on request 97799 Acetonitrile Price on request