Ammonia as (NH4+) Back Catalog number: 54214 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 9072.6-K-IP 3,4-Dichlorocatechol, 1000µg/mL, Solvent-isopropanol, Unit 1mL, # of units-1, Cas.no. 3978-67-4 Price on request 3751.6-K-IO 1,2,3,5-Tetrachlorobenzene, 1000µg/mLin Isooctane, 1ml Price on request 2043.8-50-AN Perfluorooctane sulfonamide, 50ug/ml, Solvent-acetonitrile, Unit 1mL, # of units-1, Cas.no. 754-91-6 Price on request