Use Thermo Scientific™ ProPac™ SAX-10 LC columns for exceptionally high resolution and efficiency in the separation of protein variants. ProPac columns are based on a non-porous 10 µm core particle that provides pressure stability and can resolve isoforms that differ in only a single charged residue. A thin, hydrophilic layer prevents unwanted secondary interactions. The grafted anion exchange surface provides pH-based selectivity control and rapid mass transfer for highly efficient separation and moderate capacity.