... cGMP standard, E.S., USP, China Pharmacopoeia. Reverse osmosis Summarize: Reverse Osmosis is the opposite process of the natural ... on the concentrate solution, which is contacted with the semi permeable membrane. Reverse Osmosis is adopted almost in all industries, ... EDI removes ions from aqueous streams, typically in conjunction with reverse osmosis and other purification devices. 1 stage RO+EDI ...