Hi mudabir If you have done ...

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Hi mudabir
If you have done the cleaning procedure correctly and based on the manufacturer`s guide lines, this situation is normal and its due to the chemicals effects on the membranes surface during the cleaning. Based on the cleaning chemicals and cleaning each steps duration this situation could stand for 2 days.
I suggest you to keep the system on the operating for this period and determine the TDS changes during this days. I wish your permeadity get back even earlier, otherwise you will need to shut the system off immediately and check its condition more closely.

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Thanks Mohammad, its now more than 30 days and condition is the same, would you suggest me to go for CIP alkaline first and then acidic .

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