Dionex™ IonPac™ AS4A Analytical & Guard Anion-Exchange Columns (Thermo Scientific™)

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.

Key Features

Format: 4 × 250mm
Composed of 15 micron polystyrene/divinylbenzene substrate agglomerated with anion exchange latex that has been completely aminated
0.5% cross-linked latex particles have a diameter of approximately 0.180mm and carry the ion exchange sites
Ion exchange capacity is 20μeq/column
Stable between pH 0-14

Order Codes

Code	Description
037042	Catalog Number: 037042 Unit Size: Each 1 Column Type: Guard Column Length (Metric): 50 mm
037041	Catalog Number: 037041 Unit Size: Each 1 Column Type: Standard Bore Separator Diameter (Metric): 4 mm Length (Metric): 250 mm