Ammonia as (NH4+) Back Catalog number: 50631 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended FHUEA 2H-Perfluoro-2-octenoic acid (6:2), 1.2ml x 50ug/ml, isopropanol Price on request 94912 Volatile Mix # 1, in dimethylformamide, 1ml Price on request 66112 PCB No. 112, 100ug/ml in Isooctane, 1ml Price on request