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Thermo Scientific™

Dionex™ IonPac™ AS23-4µm Analytical and Guard Columns

 Related applications:
Industrial Chromatography

Analyze trace bromate and other oxyhalides in drinking water, ground water, wastewater, and other diverse matrices using the Thermo Scientific™ Dionex™ IonPac™ AS23-4µm columns. The high capacity and selectivity of this column facilitates the determination of trace bromate at low-µg/L levels in the presence of high amounts of chloride, sulfate, and carbonate. Compared to Dionex IonPac AS23 column, the new Dionex IonPac AS23-4µm columns use smaller resin particles for more efficient separations resulting in more accurate peak integration and more reliable results.

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Compared to the Thermo Scientific™ Dionex™ IonPac™ AS23 columns, these columns use smaller resin particles for more efficient separations resulting in more accurate peak integration and more reliable results.

Designed Specifically for Trace Bromate Analysis in Drinking Water
  • Use the Dionex IonPac AS23-4µm for diverse matrices including drinking water, ground water, and waste water.
  • High capacity allows routine drinking water analysis without sample pretreatment or preconcentration.
  • Improved efficiencies and resolution compared to the Dionex IonPac AS23 column.
  • Easily transfer applications from the Dionex IonPac AS23 column to the AS23-4µm column due to the similar selectivity.
  • Compatible with organic solvents to enhance analyte solubility, modify column selectivity, and facilitate effective column clean-up.

Use With a High-Pressure IC System

Higher resolution is achieved through the use of smaller resin particles, which produce a column backpressure over 3000psi at the standard flow rates. A high-pressure IC system, such as the Thermo Scientific™ Dionex™ ICS-5000+ HPIC™ or the Thermo Scientific™ Dionex™ Integrion™ HPIC™ system is required to operate this column under standard conditions and take advantage of elevated flow rates and faster run times.

Multiple Formats Available
  • 4x250mm and 2x250mm analytical columns
  • 4x50mm and 2x50mm guard columns

Note: Use the Dionex AS23 Eluent Concentrate for simple, accurate eluent preparation.

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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