Unverified90% confidenceDecision RuleTime unknown
顽固黄渍/尿碱水垢需选含盐酸(HCl)或氨基磺酸的酸性洁厕剂，pH＜2溶解碳酸钙水垢效果最强；日常维护用含次氯酸钠的含氯型即可，二者不可混用会释放氯气
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Unverified顽固黄渍尿碱水垢需选含盐酸(HCl)≥9%的强酸型洁厕灵，柠檬酸/次氯酸钠类对陈年水垢基本无效87% similarUnverified顽固黄渍水垢应选含盐酸(HCl)成分的强力型洁厕液，浓度约9%-10%，对钙镁水垢溶解力最强；日常清洁选含表面活性剂+柠檬酸的温和型即可87% similarUnverified去除马桶顽固水垢/尿碱需选含盐酸（工业级）或有机酸浓度较高的酸性洁厕剂，pH值≤2；日常清洁维护选pH 2-4的温和酸性配方即可，长期用强酸易腐蚀釉面86% similarUnverified有效成分含盐酸(HCl)的洁厕灵溶解水垢和尿垢最强，适合黄垢/水锈严重的老马桶；但会释放刺激性气体，使用时必须开窗通风且绝不可与含氯漂白剂（84消毒液）混用85% similar
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