| 摘要 |
Abstract of the Disclosure A cationically charged material suitable for use as a filter medium that is capable of reducing a large number of active microorganisms from a fluid such as water. The filter medium includes a substrate material. Portions of the substrate material are modified by adhesion of a cationic polymer thereto, the cationic polymer having aluminum-containing groups. The cationically charged material can further include an antimicrobially active metal complexed with the polymer. Illustrative metals include copper, zinc, tin, and preferably silver.
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