Ammonia as (NH4+) Back Catalog number: 54112 Manufacturer: ABSOLUTE STANDARDS Availability: 3 weeks Price on request - + Recommended 59930 Fluoride 0.1 µg/mL (F-) in Water, 500ml Price on request N-11940-100MG Ethylmercuric chloride(Technical), 100mg Price on request 2495.1 4-Chlorophenol solution, 200mg AOX/l, 100ml Price on request