IonPac AS21
– 1 column
The AS21 hydroxide-selective anion-exchange column is specifically designed for determination of trace perchlorate in drinking water prior to MS/MS detection. The capacity and selectivity enable fast analysis of perchlorate at low μg/L concentrations. The AS21 is the specified column in US EPA Method 331.0.
- Fast separation of perchlorate prior to MS/MS detection
- Optimized for methylamine or hydroxide mobile phases
- Specified column for US EPA Method 331.0
- Optimum capacity: 45 μeq per column (2 × 250 mm)
- Operates at ambient or elevated temperatures
- Compatible with organic solvents
The AS21 2 × 250 mm column format was specifically developed for MS/MS compatibility to allow use of volatile mobile phases such as methylamine.
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Brand specifications
Every parameter recorded for every column in this Brand is shown here. A single value applies across the Brand; multiple values show what is recorded across its columns.
| Mode | Anion-Exchange | Max Pressure | 3000 |
|---|---|---|---|
| Modification | Quaternary ammonium | pH stability from | 0.0 |
| Pore Size (Å) | 2000 | pH stability to | 14.0 |
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Columns in this brand
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| 63009 | 250 | 2.0 | 7.0 | 2000 |