Filtration technology- Smart 3 in 1 Copper + Zinc + Alkaline purification system , The active copper zinc booster cartridge infuses copper & zinc ions along with other essential minerals into the water. Copper & zinc are known to boost the immune system and enhance the taste of water.Multiple purification by RO + UV + UF + Cu + Zn + Alk , RO+UV , RO is certified to remove new age contaminants from the water while eliminating all viruses & bacterias.