• Separation of common anions and low molecular weight organic acids
• For both high purity water matrices and complex matrices including chemical and petrochemical samples
• Compatible with organic solvents to enhance analyte solubility, modify column selectivity, and facilitate effective column clean-up

• Improved efficiencies and resolution compared to the Dionex IonPac AS15 column
• Easily transfer applications from the Dionex IonPac AS15 column to the AS28-Fast-4µm column due to the similar selectivity

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™ or the Thermo Scientific Dionex ICS-4000 Capillary HPIC system is required to operate this column under standard conditions and take advantage of elevated flow rates and faster run times.

The Dionex IonPac AS28-Fast-4µm capillary columns provide the same performance as the standard bore and microbore Dionex IonPac AS28-Fast-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.

• 4 x 150mm and 2 x 150mm analytical columns
• 4 x 30mm and 2 x 30mm analytical guard columns
• 0.4 x 150mm capillary columns
• 0.4 x 35mm capillary guard columns
• Smaller i.d. columns provide higher mass sensitivity, eluent and reagent conservation, and lower operating costs