Thermo Fisher, 046129, Dionex™ IonPac™ AS14 IC Columns

Dionex™ IonPac™ AS14 IC Columns is designed for isocratic anion chromatography of common inorganic anions in environmental and other aqueous samples. This configuration is the 2 mm × 250 mm analytical column, not the shorter guard version. Its medium-capacity anion-exchange phase separates anions with a carbonate/bicarbonate eluent, allowing a straightforward isocratic workflow without the hydroxide-gradient setup used by some alternative ion chromatography phases. AS14 chemistry is suited to separating fluoride and other inorganic ions and offers improved fluoride retention and resolution relative to certain earlier IonPac phases. The long analytical bed provides the chromatographic separation, while a matching 2 mm AS14 guard can be used upstream to help protect it from sample contamination. Its 2 mm bore supports the corresponding small-bore IC configuration and should be matched to appropriate flow, suppressor and system hardware for the method. This configuration provides analytical separation in a defined 250 mm column rather than the protective function of the 50 mm guard. It is intended for laboratory anion measurements under established AS14 carbonate-eluent methods.