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[[Image:Aquaest plation float packet.jpg|thumb|right|150px| Cross-section through a concrete biosand filter]]
All Plation® products are based on inactivation of (pathogenic) bacteria by silver ions. The use of silver as a water purification technique goes back millennia and is a proven method. The silver ions are released by a natural ionization process by using special ceramic balls with a coating of pure, high quality colloidal silver (microscopic small silver particles). For heavily contaminated drinking water as well as rooftop harvested rainwater, silver-ceramic balls are combined with metallic copper, as copper and silver ions together are even more effective against bacteria, algae and other microbiological contaminations.