Dionex™ IonPac™ AS31 Analytical and Guard Columns (Thermo Scientific™)

Achieve faster separation of haloacetic acids (HAAs), bromate, and dalapon in drinking water prior to detection with ion chromatography (IC) and mass spectrometry (MS) with the new Thermo Scientific™ Dionex™ IonPac™ AS31 column. Specifically designed for fast analysis, the Dionex IonPac AS31 provides approximately 39% shorter run times relative to the Dionex IonPac AS24, reducing U.S. EPA Method 557 run time from 57 minutes to approximately 35 minutes. This new hydroxide-selective anion-exchange column has relatively high capacity to allow large loop injections for trace analysis (μg/L) without sample pre-treatment.

Key Features

Superior Chromatographic Performance

Can meet or exceed the performance requirements of U.S. EPA Method 557.
High capacity (116 μeq/column) allows injection of complex matrices without overloading the column while maintaining excellent peak shapes for lower concentration analytes.
Requires no sample pre-treatment when determining haloacetic acids in high-ionic strength matrices.
Column selectivity has been optimized at an operating temperature of 15°C to ensure reproducible recovery for haloacetic acids.

Use with a High-Pressure IC system

A high-pressure IC system, such as the Thermo Scientific™ Dionex™ ICS-5000⁺ HPIC™ system or Dionex ICS-6000 HPIC system is required to operate this column under standard conditions.

Order Codes

Code	Description
303148	Catalog Number: 303148 Unit Size: Each Column Type: Guard Column Length (Metric): 50 mm Particle Size: 11 μm
303147	Catalog Number: 303147 Unit Size: Each Column Type: Analytical Column Length (Metric): 250 mm Particle Size: 6 μm