以下为句子列表：
英文: EP-RED will not give complete iron reduction in 24% or higher hydrochloric acid strength. It is likely to be ineffective in preventing iron induced sludging if 28% acid is required.
中文: 当盐酸浓度高过24%时，EP-RED将不能发挥完全的降铁作用。当使用28%浓度酸时，它已对降低铁渣失效。
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