Dionex IonPac AS20 Column 阴离子交换色谱柱

Dionex IonPac AS20 Column 阴离子交换色谱柱



型号 美国戴安 P/N: 063148

IonPac AS20 Hydroxide-Selective Anion-Exchange Column

For Determination of Trace Perchlorate Using Suppressed Conductivity Detection

The IonPac? AS20 hydroxide-selective anion-exchange column is specifically designed for determination of trace concentrations of perchlorate in drinking water, surface water, and groundwater matrices. The capacity and selectivity of the AS20 ensures that perchlorate can be quantified at low μg/L concentrations using suppressed conductivity detection, even in the presence of very high concentrations of chloride, carbonate, and sulfate. The new IonPac AS20 Capillary Column is packed with the same material as the equivalent standard bore version (providing the same performance as a 4 mm column) but requires only 1/100th the eluent flow rate. The capillary format provides the advantage of significantly reduced eluent consumption, which helps reduce operating costs.

  • Recommended for US EPA Method 314.1 (Confirmatory Method)
  • High capacity: 310 μeq per column. (4 × 250 mm)
  • Use the Cryptand C1 Concentrator Column for sample preconcentration with the analytical column
  • Simplified Reagent-Free IC operation provided by the Eluent Generator
  • ASRS 300 or ACES 300 provides RFIC operation with low background and enhanced analyte sensitivity
  • Column selectivity is optimized for 30 °C operating temperature
  • Compatible with organic solvents

The IonPac AS20 is the specified column in US EPA Method 314.1 (Confirmatory Method). The Cryptand C1 Concentrator Column is the specified concentrator column for sample preconcentration in that method.

Use the IonPac AS20 column with an RFIC? system for optimum detection limits. Use the Anion Self-Regenerating Suppressor (ASRS? 300) or the Anion Capillary Electrolytic Suppressor (ACES 300) with the AS20 column for eluent suppression.

IonPac AS20 Anion-Exchange Column   Specifications
Maximum Operating Pressure: 4000 psi (standard and microbore) 5000 psi (capillary)
Phase Compatibility: pH 0–14; 0–100% HPLC solvents
Ion Exchange Group: Functional Group: Alkanol quaternary ammonium ion
Column Construction: PEEK with 10–32 threaded ferrule style end fittings.
All components are nonmetallic.
Functional Group Characteristics: Ultralow Hydrophobicity
Dimensions: IonPac AS20 Capillary Column:
0.4 ×250 mm 
IonPac AG20 Capillary Guard Column: 
0.4 × 50 mm 
IonPac AS20 Analytical Column:
2 × 250 mm
IonPac AG20 Guard Column:
2 × 50 mm
IonPac AS20 Analytical Column:
4 × 250 mm
IonPac AG20 Guard Column:
4 × 50 mm


3.1 ?eq (0.4 × 250 mm capillary column)
77.5 ?eq (2 × 250 mm analytical column)
310 ?eq (4 × 250 mm analytical column)
0.06 ?eq*(0.4 × 50 mm capillary guard column)
1.5 ?eq* (2 × 50 mm guard column)
6 ?eq* (4 × 50 mm guard column)
*Guards are packed with a low-capacity microporous resin.

Substrate Characteristics: Bead Diameter and Pore Size:
7.5 ?m (2 × 250, 4 × 250 and 0.4 × 250 mm);
super macroporous resin (2000 ?)
11 ?m (2 × 50, 4 × 50 and 0.4 × 50 mm);
microporous resin (<1 ?)
Crosslinking (%DVB): 55%

Analytical Columns
IonPac AS20 Analytical Column (2 x 250 mm) 063065
IonPac AS20 Analytical Column (4 x 250 mm) 063148
IonPac AS20 Capillary Column (0.4 x 250 mm) 075399
Guard Columns
IonPac AG20 Guard Column (2 x 50 mm) 063066
IonPac AG20 Guard Column (4 x 50 mm) 063154
IonPac AG20 Capillary Guard Column (0.4 x 50 mm) 075400