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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 AS18 Hydroxide-Selective Anion-Exchange Col

          IonPac AS18 Hydroxide-Selective Anion-Exchange Col

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          IonPac AS18 Hydroxide-Selective Anion-Exchange Columnmonitoring of inorganic anions in drinking water and wastewater samples in accordance with US EPA Methods 300.0 (A) and 300.1.

          詳細(xì)介紹

          For Determination of Inorganic Anions and Low-Molecular-Weight Organic Acids

          The IonPac® AS18 anion-exchange column is the hydroxide-selective column of choice for compliance monitoring of inorganic anions in drinking water and wastewater samples in accordance with US EPA Methods 300.0 (A) and 300.1. 

          The new IonPac AS18-Fast columns offer the same selectivity as the AS18 analytical scale columns, but with a reduced length of 150 mm, these columns can separate the common inorganic anions in significantly less time. The capillary format offers the advantage of reduced eluent consumption, thereby lowering operating costs.  

          • Fast separation of the common inorganic anions (4 min) using the AS18-Fast columns

          • Recommended hydroxide-selective column for inorganic anions in diverse sample matrices

          • Isocratic separation of common inorganic anions in 9 minutes

          • Inorganic anion and low-molecular weight organic acids in complex sample matrices

          • Superior retention and quantification of fluoride, acetate, and formate

          • Meets performance requirements specified in US EPA Method 300.0 (A)

          The  IonPac AS18 column can determine inorganic anions and low-molecular-weight organic acids in a variety of sample matrices. This column has excellent retention of fluoride from the water dip. It is approved for compliance monitoring of inorganic anions in drinking water and wastewater samples in accordance with US EPA Methods 300.0 and 300.1. The AS18 column is now available in capillary format providing the advantage of reduced eluent consumption, thereby lowering operating costs.

          IonPac® AS18 Anion-Exchange Column Specifications
          Dimensions

          IonPac AS18 Analytical Column:
          2 × 250 mm and 4 × 250 mm
          IonPac AG18 Guard Column:
          2 × 50 mm and 4 × 50 mm
          IonPac AS18 Capillary Column:
          0.4 × 250 mm
          IonPac AG18 Capillary Guard Column:
          0.4 × 50 mm
          IonPac AS18-Fast Analytical Column:
          2 × 150 mm and 4 × 150 mm
          IonPac AG18-Fast Guard Column:
          2 × 30 mm and 4 × 30 mm
          IonPac AS18-Fast Capillary Column:
          0.4 × 150 mm
          IonPac AG18-Fast Capillary Guard Column:
          0.4 × 35 mm

          Maximum operating pressure4000 psi (standard and microbore)
          5000 psi (capillary)
          phase compatibilitypH 0–14; 0–* HPLC solvents
          Latex characteristicsFunctional Group: Alkanol quaternary ammonium ion
          Latex Crosslinking: The effective crossslinking after functionalization is 8%
          Latex Diameter: 65 nm
          Hydrophobicity: Low
          Substrate characteristicsBead Diameter and Pore Size: 7.5 µm (0.4 × 250, 2 × 250, 4 × 250, 0.4 × 150 mm, 2 ×150 and 4 × 150); supermacroporous resin (2000 Å)
          13 µm (0.4 x 50 mm, 2 × 50, 4 × 50, 2 × 30, 4 × 30, and 0.4 × 35 mm);
          microporous resin (<10 Å)
          Crosslinking (%DVB): 55%
          Capacity

          1.71 µeq (0.4 × 150 mm capillary column)
          0.07 µeq* (0.4 × 35 mm capillary guard column)
          2.85 µeq (0.4 × 250 mm capillary column)
          0.10 µeq* (0.4 × 50mm capillary guard column)
          171 µeq (4 × 150 mm analytical column)
          6 µeq* (4 × 30 mm guard column)
          45 µeq (2 × 150 mm analytical column)
          1.5 µeq* (2 × 30 mm guard column)
          75 µeq (2 × 250 mm analytical column)
          2.5 µeq* (2 × 50 mm guard column)
          285 µeq (4 × 250 mm analytical column)
          10 µeq* (4 × 50 mm guard column)
          *Guards are packed with a low-capacity microporous resin.

          Column constructionPEEK with 10-32 threaded ferrule-style end fittings.
          All components are nonmetallic.
           

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