Anion-exchange (AEX) products are commonly used as a polish step in product flow-through (FT) mode to bind impurities. Comparing resins with membranes and membranes with membranes is challenging because of the complicated and unique scaled-down model formats of the products offered by different vendors. A novel approach to AEX FT using a short, 5-cm length, packed-bed format with a faster operating flow rate is explained. The performance of commonly used AEX resins and membrane adsorbers, detailing dynamic…