Internal Standard Stock Solution, 1.2ml, nonane Back Catalog number: EPA-1668IS Manufacturer: Wellington Laboratories Availability: 1 week Price on request - + Recommended 678013 Dichlofenthion, 100 µg/ml, Toluene, 1ml Price on request 11931.12-10MG N-Ethyl-N-(2-hydroxyethyl)perfluorooctylsulphonamide,neat,neat,10mg, Price on request MCPS Mass-Labelled Chlorophenol Solution/Mixture, 1.2ml, isooctane Price on request