Silica HPLC column XSelect™

Selectivity Matters XSelect™ HPLC Columns are designed for scientists who routinely perform chromatographic method development. These chromatographic columns provide a diverse selection of sorbents to help separate the most difficult analyte co-elutions. XSelect Columns are: Designed for selectivity improve your ability to separate co-eluting peaks Ideal for rapid method development reduce the time and cost spent developing methods Intended for isolation and purification highest analyte mass loading available Particle Technologies Waters offers XSelect HPLC columns with Charged Surface Hybrid (CSH) and High Strength Silica (HSS) particle technologies. Based on Waters patented Ethylene-Bridged Hybrid (BEH) particle technology, CSH particles incorporate a low-level surface charge, designed to improve sample loadability and peak asymmetry in low-ionic-strength mobile phases, while maintaining the mechanical and chemical stability inherent in BEH particle technology. Advantages of CSH Technology include: Superior peak shape for basic compounds Increased loading capacity Rapid column equilibration after changing mobile-phase pH Improved batch-to-batch reproducibility Excellent stability at low pH