2,3,6,7-Tetrachloronaphthalene, 1.2ml x 50ug/ml, nonane Back Catalog number: PN-48S Manufacturer: Wellington Laboratories Availability: 1 week Price on request - + Recommended 20003 EPA Method 8240A/1666 - Purgeable Internal Std Price on request 8616.11-K-ME 3-Chloropropane-1,2-di(heptafluoro)butyrate, 1000µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. Price on request 56350 Tin (Sn) Price on request