Columns and Accessories > IC and RFIC Columns > Carbonate-Based Anion Columns > IonPac AS12A Anion-Exchange Column
 
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IonPac AS12A Anion-Exchange Column

The IonPac® AS12A anion-exchange column is designed for fast analysis of the common inorganic anions and oxyhalides in environmental waters. This column is also recommended for trace chloride and sulfate in high carbonate matrices. The AS23 is the recommended column for the determination of oxyhalides and inorganic anions.

  • The AS12A can be used for fast analysis of inorganic anions and oxyhalides at similar concentrations.
  • The AS12A can be used for trace chloride and sulfate in samples high in carbonate.
  • The AS23 column is the newest carbonate column for fast analysis of oxyhalides and inorganic anions at similar concentrations.
  • For trace bromate in ozonated drinking water, use the high-capacity AS23 column.

The IonPac AS12A is a moderate-capacity, carbonate-based, anion-exchange column designed for the fast, isocratic separation of inorganic anions and oxyhalides, including fluoride, chlorite, bromate, chloride, nitrite, bromide, chlorate, nitrate, phosphate, and sulfate in drinking water, wastewater, groundwater, and other diverse sample matrices. The common inorganic anions and oxyhalides can be determined in less than 12 min using an isocratic carbonate/bicarbonate eluent coupled with suppressed conductivity detection. The AS12A offers excellent retention and quantification of fluoride. It resolves chloride from high concentrations of carbonate. Use the Atlas® Anion Electrolytic Suppressor (AAES®) with the AS12A column.

IonPac AS12A Anion-Exchange Column  Specifications
Dimensions

IonPac AS12A Analytical Column:
2 × 200 mm and 4 × 200 mm

IonPac AG12A Guard Column:
2 × 50 mm and 4 × 50 mm

Maximum operating pressure

4000 psi

Mobile phase compatibility

pH 0–14; 0–100% HPLC solvents

Substrate characteristics

Bead Diameter: 9.0 µm

Pore Size: 2000 Å

Cross-Linking (%DVB): 55%

Latex characteristics

Functional Group: Alkyl quaternary ammonium ion

Latex Cross-Linking: 0.2%

Latex Diameter: 140 nm

Hydrophobicity: Medium hydrophobic

Capacity

13 µeq (2 × 200 mm analytical column)

1 µeq (2 × 50 mm guard column)

52 µeq (4 × 200 mm analytical column)

4 µeq (4 × 50 mm guard column)

Column construction

PEEK with 10-32 threaded ferrule-style end fitting. All components are nonmetallic

Order Information
IonPac AS12A Analytical Column (4 x 200 mm)046034
IonPac AG12A Guard Column (4 x 50 mm)046035
IonPac AS12A Analytical Column (2 x 200 mm)046055
IonPac AG12A Guard Column (2 x 50 mm)046056
Data Sheets
IonPac AS12A Anion-Exchange Column Data Sheet   221K
AN 93: Determination of Trace Anions in Concentrated Bases Using AutoNeutralization Pretreatment/Ion Chromatography   1MB
IonPac AS12A Analytical Column Manual   394K
AS23 Column

The new IonPac® AS23 is a very high-capacity anion-exchange column and is the recommended carbonate-based column designed for inorganic anions and oxyhalides.  The AS23 is recommended for trace bromate in drinking water. This column meets performance requirements specified in U.S. EPA Methods 300.1 and 317.0.

Ion Standards

The IonPac® ready-to-use ion standards are designed for routine anion or cation determinations.

AES

The fifth-generation Atlas® Electrolytic Suppressor delivers very low noise with fast start-up and is tailored for use with carbonate and MSA eluents. It can also be used with hydroxide and even sulfuric acid.

   
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