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          廣州尖分科學(xué)儀器有限公司>>戴安 Dionex>>IC and RFIC Columns>> IonPac AS21 Hydroxide-Selective Anion-Exchange Col

          IonPac AS21 Hydroxide-Selective Anion-Exchange Col

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          IonPac AS21 Hydroxide-Selective Anion-Exchange Columnhe AS21 hydroxide-selective anion-exchange column is specifically designed for determination of trace perchlorate in drinking water prior to MS/MS

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          For Fast Analysis of Trace Perchlorate in Drinking Water Prior to Detection with MS/MS

          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 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 phases such as methylamine.

          IonPac AS21 Anion-Exchange Column Specifications
          Dimensions:IonPac AS21 Analytical Column:
          2 × 250 mm
          IonPac AG21 Guard Column:
          2 × 50 mm
          Maximum Operating Pressure:3000 psi
          Phase Compatibility:pH 0–14; 0–* HPLC solvents
          Substrate Characteristics:Bead Diameter and Pore Size:
          7 µm (2 × 250 mm); super macroporous resin (2000 Å)
          11 µm (2 × 50 mm); microporous resin (<1 Å)
          Crosslinking (%DVB): 55%
          Ion Exchange Group:Functional Group: Alkanol quaternary ammonium ion
          Functional Group Characteristics:Ultralow Hydrophobicity
          Capacity:45 µeq (2 × 250-mm analytical column)
          1.5 µeq* (2 × 50-mm guard column)
          *Guards are packed with a low-capacity microporous resin.
          Column Construction:PEEK with 10–32 threaded ferrule style end fittings.
          All components are nonmetallic.
           

           

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