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Thermo Scientific™

Dionex™ IonPac™ AS4A Analytical & Guard Anion-Exchange Columns

 Related applications:
Industrial Chromatography
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.

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  • 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
Limited warranty period: Subject to all warranty requirements and exclusions set out in our Terms and Conditions of Sale, this product is warranted from the date we ship the product and for ninety (90) days thereafter. Disclaimer to internal research use restriction: Any restrictions on the purchaser to utilize the product(s) for internal research purposes only does not apply to the product(s) on the web pages associated with this statement.


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