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消毒用的乙醇浓度是多少
更新时间: 2020-10-08 00:00:00  

百分之七十五的乙醇用于消毒。乙醇浓度过高和过低都不足以使细菌死亡。这是因为,过高浓度的酒精会在细菌表面形成一层保护膜,阻止其进入细菌体内,难以将细菌彻底杀死。若酒精浓度过低,虽可渗透入细菌,但不能将其体内的蛋白质凝固,同样也不能将细菌彻底杀死。只有一定浓度的酒精溶液,才能达到良好的消毒杀菌目的。

关键词: 消毒 乙醇 浓度 多少

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