Hafnium (Hf) Back Catalog number: 58072 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 50590 Copper (Cu) - 1 PPM Price on request 1991.12-50-IO 3,3',4,4'-Tetrabromodiphenyl ether, 50µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 93703-48-1 Price on request D3452 3-(3,5-Di-tert-butyl-4-hydroxyphenyl)propionic Aci Price on request