EPA 1638Mix A Back Catalog number: 52144 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 11931.12-50-AN N-Ethyl-N-(2-hydroxyethyl)perfluorooctylsulphonamide,50 µg/mL,acetonitrile,1mL, Price on request 682639 Diphenyl carbonate, 1000mg Price on request 0694.29-100-IO 28-Norlup-17(22)-ene, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 53767-52-5 Price on request