Ammonium (NH4+) Back Catalog number: 50184 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1853.16-100MG 1,8-Anthracenedicarboxylic acid, neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. 93655-34-6 Price on request 11687.12-100-IO 2,2',3,6'-Tetrachlorobiphenyl,100 µg/mL,isooctane,1mL, Price on request 91407 Florida 8100 - TPH n-Hydrocarbons C8-C40 Even Price on request