by Dionex
The IonPac® AS4A-SC 2 mm and 4 mm anion-exchange columns are designed for the fast analysis of inorganic anions in environmental waters. The AS4A-SC was introduced in 1984 and has been the preferred column for inorganic anion analysis for many years. It is the specified column in US EPA Method 300.0 (A).
The IonPac AS4A-SC (solvent-compatible) is a low-capacity carbonate eluent anion-exchange column for the fast, isocratic separation of inorganic anions such as nitrate or sulfate, using a carbonate/bicarbonate eluent coupled with suppressed conductivity detection. Inorganic anions are easily determined in any liquid, including water, foods, and other diverse sample matrices.
| Vendor | Dionex | Internal Diameter | |
| Brand | IonPac AS4A-SC | Max Pressure | 4000 |
| 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 |
|---|---|---|---|---|---|---|---|---|
| Shodex | QA8 | Anion-Exchange | Quaternary ammonium | 0.5 mm | 150 mm | 12.0 μm | — | On request |
| Shodex | QA8 | Anion-Exchange | Quaternary ammonium | 2.0 mm | 150 mm | 12.0 μm | — | On request |
| GRACE | Alltech IC Allsep Anion Metal Free | Anion-Exchange | Quaternary ammonium | 4.6 mm | 50 mm | 7.0 μm | — | On request |
| Dionex | CarboPac PA1 | Anion-Exchange | Quaternary ammonium | 22.0 mm | 250 mm | 10.0 μm | — | On request |
| Dionex | CarboPac PA1 | Anion-Exchange | Quaternary ammonium | 4.0 mm | 250 mm | 10.0 μm | — | On request |
| Shodex | IC NI | Anion-Exchange | Quaternary ammonium | 4.6 mm | 100 mm | — | — | On request |
| Dionex | IonPac AS5 | Anion-Exchange | Quaternary ammonium | 4.0 mm | 250 mm | 15.0 μm | — | On request |
| Dionex | DNAPac PA200 | Anion-Exchange | Quaternary ammonium | 4.0 mm | 250 mm | 8.0 μm | — | On request |
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