Designed specifically for compliance monitoring of inorganic anions in accordance with U.S. EPA Method 300.0 (A) and 300.1, the Thermo Scientific™Dionex™IonPac™AS22 column represents the culmination of more than 20 years of column development, and is a key complement to our award-winning Reagent-Free™IC (RFIC™) system. And now the Dionex IonPac AS22 column is available in capillary format. The Dionex IonPac AS22 Capillary column is packed with the same material as the equivalent standard bore version (providing the same performance as a 4 mm column), but requires only 1/100th the eluent flow rate. The capillary format provides the advantage of significantly reduced eluent consumption, which helps reduce operating costs.
Fast isocratic separation of the common inorganic anions in 8 minutes
Isocratic separation of inorganic anions in complex sample matrices in 12 minutes
Carbonate peak well-resolved from the common inorganic anions
Meets performance requirements specified in U.S. EPA Method 300.0 (A)
Ideal alternative for Dionex IonPac AS4A-SC, AS12A, AS14, and AS14A inorganic anion applications
Simple, accurate eluent preparation with the Dionex IonPac AS22 Eluent Concentrate
Optimized for a 30 °C operating temperature to ensure reproducible retention times
The Dionex IonPac AS22 column is designed for the determination of inorganic anions and low molecular weight organic acids including fluoride, acetate, formate, chloride, nitrite, bromide, nitrate, phosphate, and sulfate. The Dionex IonPac AS22 column can be used with isocratic carbonate/bicarbonate eluents and suppressed conductivity detection. Common inorganic anions can easily be separated in a variety of sample matrices including drinking water, wastewater, process streams, and scrubber solutions.
The Dionex IonPac AS22 column can be used in combination with the Eluent Generator and the Electrolytic pH Modifier (EPM) which automatically produce potassium carbonate/bicarbonate eluents from water. The Dionex IonPac AS22 column is the newest carbonate eluent column recommended for fast analysis of inorganic anions and is an ideal alternative, using carbonate-bicarbonate eluents, for Dionex IonPac AS4A-SC, AS12A, AS14, and AS14A inorganic anion applications.
Note: Use the Thermo Scientific Dionex ASRS 300 Anion Self-Regenerating Suppressor with the Dionex IonPac AS22 column for eluent suppression.
| Dionex IonPac AS22 Anion-Exchange Column Specifications | |
|---|---|
| Substrate Characteristics: | Bead Diameter and Pore Size: 6 µm (0.4 × 250, 2 × 250and 4 × 250 mm); super macroporous resin (2000 Å) 11 µm (0.4 × 50, 2 × 50and 4 × 50 mm); microporous resin (<1 Å) Cross-linking (%DVB): 55% |
| Ion Exchange Group: | Functional Group: Alkanol quaternary ammonium ion |
| Functional Group Characteristics: | Ultralow hydrophobicity |
| Column Construction: | PEEK with 10-32 threaded ferrule style end fittings. All components are nonmetallic. |
| Capacity: | 2.10 µeq (0.4 × 250 mmm) 52.5 µeq (2 × 250 mm analytical column) 210 µeq (4 × 250 mm analytical column) 0.06 µeq* (0.4 × 50 mm) 1.5 µeq* (2 × 50 mm guard column) 6 µeq* (4 × 50 mm guard column) *Guards are packed with a low-capacity microporous resin. |
| Dimensions: | Dionex IonPac AS22 Analytical Column: 2 × 250 mm and 4 × 250 mm Dionex IonPac AS22 Capillary Column: 0.4 × 250 mm Dionex IonPac AG22 Guard Column: 2 × 50 mm and 4 × 50 mm Dionex IonPac AS22 Capillary Guard Column 0.4 × 50 mm |
| Maximum Operating Pressure: | 3000 psi |
| Mobile Phase Compatibility: | pH 0–14; 0–100% HPLC solvents |
The analysis of a drinking water sample using the Dionex IonPac AS22 Capillary column.
The analysis of a carbonated water sample using the Dionex IonPac AS22 Capillary column.
| Analytical Columns | |
|---|---|
| IonPac AS22 Analytical Column (2 x 250 mm) | 064137 |
| IonPac AS22 Analytical Column (4 x 250 mm) | 064141 |
| Dionex IonPac AS22 Capillary Column (0.4 × 250 mm) | 079057 |
| Guard Columns | |
|---|---|
| IonPac AG22 Guard Column (2 x 50 mm) | 064135 |
| IonPac AG22 Guard Column (4 x 50 mm) | 064139 |
| Dionex IonPac AG22 Capillary Guard Column (0.4 × 50 mm) | 079058 |
| Anion Eluent Concentrates | |
|---|---|
| AS22 Eluent Concentrate (100x), 250 mL | 063965 |
