Ammonia as NH3 Back Catalog number: 50779 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 94830 PCB Congeners Price on request 1925.10 trans-1,2-Dihydroxy-1,2-dihydrophenanthrene, Please inquire, Solvent-, Unit , # of units-1, Cas.no. 60917-41-1 Price on request 94090 Oxygenates Price on request