DESCRIPTION
Use the newer Thermo Scientific™ Dionex™ IonPac™ AS22 columns as substitutes for Dionex IonPac AS4A Analytical & Guard Cation-Exchange Columns. Dionex IonPac AS4A columns are now only available in limited quantities for customers who have established validated methods using this column. The Dionex IonPac AS22 column provides fast separation of common inorganic anions in a variety of sample matrices including drinking water, wastewater, process streams, and scrubber solutions using a simple isocratic carbonate/bicarbonate eluent.