by Dionex
The IonPac® AS20 hydroxide-selective anion-exchange column is specifically designed for determination of trace concentrations of perchlorate in drinking water, surface water, and groundwater matrices. The capacity and selectivity of the AS20 ensures that perchlorate can be quantified at low μg/L concentrations using suppressed conductivity detection, even in the presence of very high concentrations of chloride, carbonate, and sulfate. The new IonPac AS20 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.
| Vendor | Dionex | Internal Diameter | |
| Brand | IonPac AS20 | Max Pressure | 5000 |
| Modifification | Quaternary ammonium | pH stability from | 0.0 |
| Mode | Anion-Exchange | pH stability to | 14.0 |
| Length |
| Vendor | Brand | Mode | Modification | Int. diam. | Length | Particles | Pores | Price |
|---|---|---|---|---|---|---|---|---|
| Dionex | ProPac PA1 | Anion-Exchange | Quaternary ammonium | 9.0 mm | 250 mm | 10.0 μm | — | On request |
| Dionex | IonPac AS18 | Anion-Exchange | Quaternary ammonium | 0.4 mm | 150 mm | 7.5 μm | 2000 Å | On request |
| Dionex | IonPac AS22 | Anion-Exchange | Quaternary ammonium | 4.0 mm | 150 mm | 6.5 μm | 2000 Å | On request |
| GRACE | Alltech IC Allsep Anion | Anion-Exchange | Quaternary ammonium | 4.6 mm | 100 mm | 7.0 μm | — | On request |
| GRACE | Alltech IC Novosep A-2 | Anion-Exchange | Quaternary ammonium | 4.0 mm | 250 mm | 5.0 μm | — | On request |
| Dionex | AminoPac PA10 | Anion-Exchange | Quaternary ammonium | 9.0 mm | 250 mm | 8.5 μm | — | On request |
| Dionex | CarboPac PA100 | Anion-Exchange | Quaternary ammonium | 9.0 mm | 250 mm | 8.5 μm | — | On request |
| Dionex | IonPac AS9-HC | Anion-Exchange | Quaternary ammonium | 4.0 mm | 250 mm | 9.0 μm | 2000 Å | On request |
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