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IonPac AS4A-SC Carbonate Eluent Anion-Exchange Column

品牌 厂商性质 产地 货期
赛默飞 一般经销商 美国 订货

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For the Fast Isocratic Separation of Inorganic Anions in Drinking Water and Wastewater

The IonPac®AS4A-SC 2 mm and 4 mm anion-exchange columns are designed for the fast analysis of inorganic anions in environmental waters. The AS4A-SC was introduced in 1984 and has been the preferred column for inorganic anion analysis for many years. It is the specified column in US EPA Method 300.0 (A).

  • Resolves inorganic anions in 8 min using an isocratic carbonate/bicarbonate eluent.

  • Sodium tetraborate gradient optimizes difficult separations.

  • Meets or exceeds US EPA Method 300.0 (A) performance requirements.

  • Provides excellent performance for fast analysis of inorganic anions.

The IonPac AS4A-SC (solvent-compatible) is a low-capacity carbonate eluent anion-exchange column for the fast, isocratic separation of inorganic anions such as nitrate or sulfate, using a carbonate/bicarbonate eluent coupled with suppressed conductivity detection. Inorganic anions are easily determined in any liquid, including water, foods, and other diverse sample matrices.

Separation of the common inorganic anions can be achieved in less than 10 min using an isocratic carbonate/bicarbonate eluent. For simplified operation, use the AS4A-SC Eluent Concentrate and the Combined Seven Anion Standard. The Anion Self-Regenerating Suppressor (ASRS®300) is recommended for use with the AS4A-SC column.

Note: The AS22 is the newest carbonate eluent column recommended for fast analysis of inorganic anions.


IonPac AS4A-SC Anion-Exchange Column Specifications
DimensionsIonPac AS4A-SC Analytical Column:
2×250 mm and 4 × 250 mm
IonPac AG4A-SC Guard Column:
2 × 50 mm and 4 × 50 mm
Maximum operating pressure4000 psi
Mobile phase compatibilitypH 0–14; 0–100% HPLC solvents
Substrate characteristicsBead Diameter: 13 µm
Cross-Linking (%DVB): 55%
Latex characteristicsFunctional Group: Alkanol quaternary ammonium ion
Latex Cross-Linking: 0.5%
Latex Diameter: 160 nm
Hydrophobicity: Medium low
Capacity5 µeq (2×250 mm analytical column)
1 µeq (2 × 50 mm guard column)
20 µeq (4 × 250 mm analytical column)
4 µeq (4 × 50 mm guard column)
Column constructionPEEK with 10-32 threaded ferrule-style end fittings.
All components are nonmetallic.


Determination of inorganic anions in a drinking water sample using an IonPac AS4A-SC column.

Determination of inorganic anions in a wastewater sample using an IonPac AS4A-SC column.

Tetraborate gradient separation of anions using the IonPac AS4A-SC 2 mm column.

Direct injection of anions in a solvent extract using the IonPac AS4ASC column.


Analytical Columns
IonPac AS4A-SC Analytical Column (2 x 250 mm)043125
IonPac AS4A-SC Analytical Column (4 x 250 mm)043174
Guard Columns
IonPac AG4A-SC Guard Column (4 x 50 mm)043175
IonPac AG4A-SC Guard Column (2 x 50 mm)043126


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注:该产品未在中华人民共和国食品药品监督管理部门申请医疗器械注册和备案,不可用于临床诊断或治疗等相关用途