osmosis (RO).
Professor Sidney Loeb and engineer Ed Selover remove newly
manufactured reverse osmosis membrane from plate-andframe
production unit circa 1960.
About the same time, some researchers were
investigating a non-permeable membrane
technology known as electrodialysis. Both
the electrodialysis (ED) and Reverse
Osmosis (RO) processes use membranes to
separate dissolved salts from water.