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Thermo Scientific Dionex IonPac AS26 Hydroxide-Selective Anion-Exchange Column

For Separation of Haloacetic Acids and Bromate in Drinking Water Using Two-Dimensional Ion Chromatography (2D-IC) Analysis

The Thermo Scientific Dionex IonPac^* AS26 hydroxide-selective anion-exchange column is specifically designed for 2D-IC separation of haloacetic acids (HAAs) in drinking water. The capacity and selectivity of this column enables analysis of haloacetic acids in drinking water at low-μg/L concentrations. The Dionex IonPac AS26 column is available in standard bore (4 × 250 mm), microbore (2 × 250 mm), and capillary (0.4 × 250 mm) formats, supporting flow rates from 10 ?L/min to 3 mL/min.

High capacity: 250 μeq per column (4 × 250 mm)
Determines HAAs in high-ionic-strength matrices without sample pretreatment
Column selectivity optimized for a 15 ?C operating temperature
Compatible with HPLC organic solvents
Used as second-dimension column in 2D-IC method for HAAs (0.4 × 250 mm)

Dionex IonPac^? AS26 Anion Exchange Column Specifications
Substrate Characteristics:	Bead Diameter and Pore Size: 7.5 ?m (2 × 250, 4 × 250, and 0.4 × 250 mm); supermacroporous resin (2000 ?) 13 ?m (2 × 50, 4 × 50, 0.4 × 50 mm); microporous resin (<10 ?) Crosslinking (%DVB): 55%
Ion-Exchange Group:	Functional Group: Alkanol quaternary ammonium ion
Functional Group Characteristics:	Ultralow Hydrophobicity
Capacity:	250 ?eq (4 × 250 mm analytical column) 6 ?eq* (4 × 50 mm guard column) 62.5 ?eq (2 × 250 mm analytical column) 1.5 ?eq* (2 × 50 mm guard column) 2.5 ?eq (0.4 × 250 mm capillary column) 0.06 ?eq* (0.4 × 50 mm capillary guard column) *Guard is packed with a low-capacity microporous resin.
Column Construction:	PEEK^? with 10-32 threaded ferrule-style end fittings. All components are nonmetallic.
Dimensions:	Dionex IonPac AS26 Analytical Column: 2 × 250 mm, 4 × 250 mm Dionex IonPac AG26 Guard Column: 2 × 50 mm, 4 × 50 mm Dionex IonPac AS26 Capillary Column: 0.4 × 250 mm Dionex IonPac AG26 Capillary Guard Column: 0.4 × 50 mm
Maximum Operating Pressure:	3000 psi (standard, microbore and capillary)
Phase Compatibility:	pH 0–14; 0–100% HPLC solvents