Thermo Scientific Dionex IonPac AS23-4μm IC Columns

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.

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.

Specifications

• Anion Exchange Capacity: 320 μeq
• Crosslinking: 55% DVB
• Column Capacity: 320 μeq
• Column Chemistry: Carbonate/Bicarbonate
• For Use With (Application): Anion Exchange
• Ion Exchange Group: Alkanol Quaternary Ammonium Ion
• Max. Pressure: 5000 psi (345 bar)
• Solvent Compatibility: pH 0 to 14, 0 to 100% HPLC Solvents
• Stationary phase: IonPac AS23-4μm
• Format: Standard Bore
• Packing material: Polyvinylbenzyl Ammonium Polymer/Divinylbenzene