Unverified90% confidenceDecision RuleTime unknown
水垢（碳酸钙）主要用酸性除垢剂（柠檬酸、氨基磺酸、盐酸类），pH＜3效果好；铁锈（氧化铁）需含还原剂或螯合剂（EDTA、草酸）的配方，普通酸性剂对铁锈效果差
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