EPA Method 531.1 Individual Analytes Back Catalog number: 31241 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1605.12-50-IO 4-Fluorodiphenyl ether, 50µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 330-84-7 Price on request C10045300 Acrylamide, certified, 0.25g Price on request 11932-10-50-AN N-?Methylperfluorooctanesulfo?namide,50 µg/mL,acetonitrile,1mL, Price on request