ZORBAX Ion Exchange columns are available as both Strong Anion-Exchange (SAX) and Strong Cation-Exchange (300SCX) columns. Each column is packed with bonded, 5 µm, spherical silica particles for optimum efficiency in separating and purifying biological macromolecules, including proteins, peptides and polynucleotides. ZORBAX Ion Exchange columns exhibit a high degree of mechanical stability. Therefore, they can be used at high operating flow rates and pressures. The columns are compatible with rapid changes in ionic strength, thus short gradient times and rapid re-equilibration are possible. View our full range of bioHPLC columns for your area of interest, get resources, and take advantage of special offers.