EPA Method 551.1 Performance Check Soln Back Catalog number: 30104 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 673534 4,4'-DDE, 100 µg/ml, Ethyl acetate, 5ml Price on request 59032 ICP Main Price on request FOET 2-Perfluorooctyl ethanol (8:2), 1.2ml x 50ug/ml, methanol Price on request