Thermo Scientific™

Dionex™ IonPac™ AS16-4μm Analytical, Capillary, and Guard IC Columns

Related applications:

Industrial Chromatography

Analyze trace perchlorate and other highly polarizable anions including thiosulfate, iodide, and thiocyanate in a variety of water matrices by ion chromatography (IC) using Thermo Scientific™ Dionex™ IonPac™ AS16-4µm columns. Compared to standard Dionex IonPac AS16 columns, these new Dionex IonPac AS16-4µm columns use smaller resin particles for more efficient separations resulting in more accurate peak integration and more reliable results. Dionex IonPac AS16-4µm columns are the ideal choice for determining trace perchlorate in drinking water in accordance with U.S. EPA Methods 314.0, 314.1, 314.2, and 332.

Back to top
Designed for simple, sensitive analysis
  • Easily measure trace concentrations of perchlorate in drinking water, surface water, and ground water matrices using a large-loop injection
  • Improved efficiencies and resolution compared to the standard Dionex IonPac AS16 column
  • Easily transfer applications from the Dionex IonPac AS16 column to the Dionex IonPac AS16-4µm column due to their similar selectivity
  • Ultralow hydrophobicity allows for fast analysis of highly polarizable anions (thiosulfate, iodide, thiocyanate, and perchlorate) with a simple, isocratic eluent
  • Ideal for polyvalent anions, including polyphosphates
Use with a high-pressure IC system

Higher resolution is achieved through the use of smaller resin particles, which produce a column backpressure over 3000 psi at the standard flow rates. A high-pressure IC system, such as the Thermo Scientific™ Dionex™ ICS-5000+ HPIC™ system, Dionex Integrion™ HPIC system, or the Dionex ICS-4000 Integrated Capillary HPIC system is required to operate this column under standard conditions.

Reduce operating costs with lower eluent requirements

Capillary Dionex IonPac AS16-4µm columns provide the same performance as the standard bore and microbore Dionex IonPac AS16-4µm columns because they are packed with the same material. Operating costs are reduced because the capillary system operates at only 1% of the eluent flow rate of the standard bore system, requiring less eluent and producing less waste.

Multiple Formats Available

  • 4 x 250 mm and 2 x 250 mm analytical columns
  • 4 x 50 mm and 2 x 50 mm analytical guard columns
  • 0.4 x 250 mm capillary columns
  • 0.4 x 50 mm capillary guard columns
  • Smaller i.d. columns provide higher mass sensitivity, eluent and reagent conservation, and lower operating costs