Urban dust - Organic contaminants, 2g Back Catalog number: NIST-1649B 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 C15171200 Metolachlor oxanilic acid (OA), certified, 10mg Price on request 683061 3-Bromoaniline, 1000mg Price on request