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六偏磷(lin)酸(suan)鈉（SHMP）
阻垢劑(ji)主要防止反滲透膜結(jie)垢，一(yi)般在（過濾器）之前，阻垢劑(ji)和分散(san)劑(ji)典型添(tian)加量為2-5ppm，一般藥(yao)劑用量(liang)在7-10天.
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