Ferrous Iron (Fe) Back Catalog number: 54174 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 690172 m-Phenylenediamine, 100mg Price on request 1962.12-50-IOX10 2,2',4,4'-Tetrabromodiphenyl ether, 50µg/mL, Solvent-isooctane, Unit 1mL, # of units-10, Cas.no. 5436-43-1 Price on request 1111.13-100-T 2,7-Dinitrofluorene, 100µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 5405-53-8 Price on request