Copper and silver have been used for centuries to sanitize water. Copper is a well know algicide & silver is a powerful bactericide. In the ancient Greek civilization, the royalty used to drink from silver goblets & their water was stored in silver urns in order to purify their drinking water. As the pioneer settlers moved west across the American continent, they insured safe drinking water by putting silver coins in their barrels of water & milk.
In the 1960's, NASA developed an electrolytic silver ionizer to purify the astronaut's drinking water for use on the Apollo missions. Today silver is used in medications for treatment of burn patients to prevent infections, for newborns to prevent blindness, to make bacteria free cosmetics, in drinking water filters, and for filling cavities in teeth to help prevent further decay. Copper based algaecides have long been used in swimming pools, fountains, lakes & ponds to safely control algae problems.
The process of an atom gaining or losing electrons is called ionization. Poolpure India ionizer generates copper & silver ions in minute quantities for water purification. A safe low DC current like that of several flashlight batteries is passed through a set of copper & silver alloy anodes. As the water passes through the sealed chamber, metallic ions are generated to purify the water. The microscopic action of the ions with the algae & bacteria are twofold. First, the algae & bacteria are destroyed through a change in their enzyme processes. Second, all these charged particles floc together & then they are more effectively pulled out by the filter. The ions maintain a stable sanitizer residual in the water until they are used up by this process hence keeping the pool clean.