Thermo Fisher, 052960, Dionex™ IonPac™ AS11-HC IC Columns

Dionex™ IonPac™ AS11-HC IC Columns is designed for anion-exchange ion chromatography of inorganic anions and organic acid anions in complex sample matrices. This configuration is the 4 mm × 250 mm analytical column with a high-capacity AS11-HC stationary phase. It is built for hydroxide-gradient separations and is particularly suited to samples containing multiple inorganic anions and monovalent or divalent organic acids, including complex matrices such as chemical wastewater effluents and fermentation broth solutions. The column has a 290 µeq anion-exchange capacity and uses a PEEK body with ethylvinylbenzene/divinylbenzene packing, 55% DVB crosslinking, 70 nm latex, and 9 µm particles. Recommended flow is 1.5 to 3.0 mL/min, and maximum pressure is 4000 psi (275 bar). Solvent compatibility covers pH 0 to 14 and 0 to 100% HPLC solvents. The ion-exchange group is an alkanol quaternary ammonium functionality. The column is compatible with the ASRS 300 suppressor system. Its high capacity permits higher-concentration sample loading with reduced risk of overload and peak broadening, supporting single-run hydroxide-gradient analysis of chemically diverse anions. The high-capacity phase is especially useful when higher sample concentrations would otherwise increase the risk of column overload or peak broadening. Typical target acids include quinate, lactate, acetate, propionate, formate, and butyrate within hydroxide-gradient methods.