• The longer 250mm Dionex IonPac AS18 hydroxide selective chromatography column can achieve higher resolution separation of more complex sample matrices li>
• Standard well, microwell and capillary models are available, suitable for the analysis of common inorganic anions and

• Compliance monitoring of common anions in drinking water as described in U.S. EPA Method 300.0 (A)
• Determination of low-level inorganic anions in complex matrices using large loop injection
• Excellent retention and quantitation of fluoride, acetate, and formate
• Isocratic separation of common inorganic anions in a variety of matrices in 9 minutes using a 250mm column
• For higher capacity applications, use 250mm columns, allowing injection of higher concentration samples without column overloading or peak broadening
• Compatible with organic solvents, thus Can improve analyte solubility, change column selectivity, or facilitate efficient column cleaning

• Water source water and drinking water, municipal and industrial wastewater
• Industrial cooling water, hazardous waste extracts and landfill leakage sewage, acid rain
• Food and beverages, pharmaceutical preparations and synthesis Anionic counterions in peptides
• Polymers such as polyols and polysulfonates, detergents

Using these longer 250mm analytical columns can achieve higher resolution separations of more complex sample matrices. Choose from standard bore, micropore, and capillary tube sizes and use appropriate guard columns to protect the analytical column and extend its life. Use:

• 4x250mm standard bore column with 4x50mm guard column
• 2x250mm microbore column with 2x50mm guard column
• 0.4x250mm capillary column Used with 0.4x50mm guard columns

Capillary columns can save eluent by And significantly reduce operating costs and waste liquid disposal costs. Dionex IonPac AS18 capillary columns use the same packing materials as their standard and microbore counterparts, providing the same performance. Operating costs are reduced because the eluent flow rate when operating a capillary system is only 1% of a standard orifice system. Capillary columns can be used with Thermo Scientific™ Dionex™ ICS-4000 and ICS-5000+ capillary systems.

• For faster performance in relatively clean matrices For faster, higher-resolution runs, use the shorter 150mm Dionex™ IonPac™ AS18-Fast Hydroxide Selective Anion Exchange Column
• For faster, higher-resolution separations, use smaller particle sizes Dionex™ IonPac™ AS18-4µm Hydroxide Selective Anion Exchange Column. Using 4µm columns requires a high-pressure IC system.