Ammonium as N Back Catalog number: 50791 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended MDD-1289 1,2,8,9-Tetrachloro(13C12)dibenzo-p-dioxin, 1.2mL x 50ug/mL, toluene Price on request 92387 EPA Method 8141 Surrogate Standard Price on request 8357.12 4-Amino-5-fluoro-PCB-163, Please inquire, Solvent-, Unit , # of units-, Cas.no. Price on request