| 摘要 |
The supported adsorbent used in an aquarium or pond water filter is of zeolite, aluminum oxides, bentonites, natural materials such as peat or peat products, cellulose-based materials, activated carbon or synthetic ion-exchangers. An Independent claim is included for the manufacture of the filter by applying the finely-divided absorbent as an aqueous solution or suspension or slurry onto the support.
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