| Certifications/Compliance | Method 300.0 and 300.1 |
|---|---|
| Column Chemistry | Hydroxide |
| Column Construction | PEEK |
| Flow Rate | 0.25 to 0.38 mL/min. |
| For Use With (Application) | Anion Exchange |
| For Use With (Equipment) | Dionex IonPac AS19-4μm Analytical Column |
| Green Features | FSC |
| Max. Pressure | 5000 psi (345 bar) |
| Quantity | Each 1 |
| Solvent Compatibility | pH 0 to 14, 0 to 100% HPLC Solvents |
| Solvents | 0 to 100% of HPLC Solvents |
| Column Type | Guard Column |
| Diameter (Metric) | 2 mm |
| Format | Microbore |
| Length (Metric) | 50 mm |
| pH | 0 to 14 |
| Unit Size | Each 1 |
Answer:It is a 2 × 50 mm guard column.
Answer:It protects the matching analytical column during anion and oxyhalide analysis.
Answer:The maximum pressure is 5000 psi (345 bar), and the recommended flow rate is 0.25–0.38 mL/min.
Dionex™ IonPac™ AS19-4μm IC Columns is designed for protecting an AS19-4μm analytical column during trace-anion and oxyhalide measurements by ion chromatography. This exact configuration is a 2 × 50 mm guard column, not the longer analytical separation column. Its hydroxide-selective ion-exchange chemistry supports methods that resolve bromate and other inorganic anions in drinking-water matrices. Positioned ahead of the matching 2 mm analytical column, the short guard bed captures sample-derived contaminants before they reach the primary separation bed while retaining compatible selectivity. The column uses PEEK construction and supports a recommended flow range of 0.25–0.38 mL/min, maximum pressure of 5000 psi (345 bar), and a solvent-compatibility range of pH 0–14. The guard format can be used with methods associated with US EPA Methods 300.0 and 300.1. It is supplied individually and is suited to protecting the analytical column in drinking-water testing where low-level bromate detection and reliable chromatographic peak shape are important. The guard's 50 mm length distinguishes it from the 250 mm analytical configuration.
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