Surrogate Standard Stock Solution, 1.2ml, nonane Back Catalog number: EPA-23SSS Manufacturer: Wellington Laboratories Availability: 1 week Price on request - + Recommended 63060 2,3,4,4'-Tetrachlorobiphenyl (60) Price on request 11933-10-50-AN N-?Ethylperfluorooctanesulfo?namide,50 µg/mL,acetonitrile,1mL, Price on request 91816 Surrogate Standard Price on request