Cleaning an RO system

Hello all,

I have an RO system which I don’t think has been cleaned in many years and I would like to give it a clean. I have read an article from this forum which recommends cleaning using citric acid and then an alkaline cleaner followed by a clean with peroxide. I would like to use this sequence on our system but unfortunately the article didn’t mention the concentrations of the chemicals. I have a concentration for the peroxide solution but not for the others.

If anyone would have any information on concentrations I would love to hear them.

Many thanks,



The concentration usually provided by the vendor/supplier during installation of RO system, followed by testing of quality of purified water.
Also we should ideally use recommended Acidic, alkaline and neutral agents for chemical cleaning of RO membrane for better longevity.