What are hard water, softened water, and deionized water? 【Video】
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Hard water: Water that contains high levels of minerals such as calcium and magnesium, and tends to form scale. Softened water: Water whose hardness is reduced by removing or lowering the levels of calcium and magnesium ions; it is commonly used in industry and daily life to prevent scaling. Deionized water: Water in which almost all ions and salts are removed through methods such as ion exchange and reverse osmosis, resulting in water of high purity; it is commonly used in industrial production. .