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水 | 知って得しない?豆知識

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Tag: 水

水の豆知識

ミネラルウォーターブームの中、一般的になった水の硬度には2種類があるのをご存知でしょうか? アメリカ硬度とドイツ硬度です。 アメリカ硬度は、水1L中に含まれるカルシウムとマグネシウムの量を、炭酸カルシウム(CaCO3)の […]