EPA Method 551.1 Surrogate Standard Back Catalog number: 31102 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 675718 Flucythrinate, 100 µg/ml, Ethyl acetate, 5ml Price on request 70366 1,3-Dinitrobenzene Price on request 675953 D7-Benzyldimethyloctadecylammonium chloride, 10mg Price on request