EPA Method 507 Surrogate Standard Back Catalog number: 19049 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended H943795 (+)-13a-Hydroxylupanine, 1mg Price on request 1319.16-100-AN 3-Fluorofluoranthene,100 µg/mL,acetonitrile,1mL, Price on request B690270 L-Buthionine-(S,R)-sulfoximine, 98%, 500mg Price on request