The SH-AP-4 Anion Column is a high-resolution analytical column optimized for the precise separation of common and trace-level anions in a wide range of sample matrices. Developed using a proprietary high-capacity stationary phase, this column offers enhanced selectivity, sharp peak shapes, and robust performance across complex matrices such as environmental samples, food products, and industrial chemicals. The SH-AP-4 column is an upgraded version of the SH-AP series, offering stronger retention for weakly retained anions and better separation of complex ion mixtures, including organic acids and haloacetic acids.
Feature of SH-AP-4 Anion Column
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Enhanced resolution of low and high molecular weight anions
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Optimized for trace-level detection with low baseline drift
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Stable across a wide pH range (2–12) and high-pressure conditions
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Supports suppressed and non-suppressed IC detection systems
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Improved peak symmetry, especially for multivalent anions
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Excellent column reproducibility and long service life
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Compatible with carbonate, hydroxide, and mixed eluent systems
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