PROBLEM TO BE SOLVED: To provide an algae proofing composition safe for organisms and preventing growth of algae, water-bloom, etc., in various kinds of water tanks, water storage tanks, etc., of cooling towers over a long period.SOLUTION: The algae proofing composition is composed of a molded product containing a mixture of a zinc compound with an organic acid. In the algae proofing composition, the zinc compound is one or more kinds selected from the group consisting of zinc oxide, zinc sulfate, zinc chloride and zinc nitrate. In the algae proofing composition, the organic acid is one or more kinds selected from the group consisting of hydroxycarboxylic acids, amino acids and monosaccharides.COPYRIGHT: (C)2006,JPO&NCIPI【課題】 各種水槽、クーリングタワーの貯水槽等において、藻類、アオコ等の発生を長期にわたり防止し、かつ、生物に対して安全な防藻組成物を提供すること。【解決手段】 亜鉛化合物と有機酸との混合物を含む成形体よりなる防藻組成物である。【選択図】 なし
