Ammonia as (NH4+) Back Catalog number: 54212 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended M3-MEL [13C3]-Melamine, 1.2ml x 100ug/ml, water Price on request 66014 PCB No. 14, 100µg/ml in Isooctane, 1ml Price on request S-4405-100-DB Deuterated EPA PAH-mix in deuterated benzene, See S-solutions pricelist, Solvent-, Unit , # of units-, Cas.no. Price on request