The LG water purifier's Dual Protection Stainless Steel Water Tank, maintain freshness of water and reduce the growth of bacteria and algae. Far more hygienic than a conventional plastic tank, it ensures that water remains safe for drinking with Dual Protection Seal.  LG's Stainless Steel water storage tanks have 94.4% less E.Coli growth in 24hrs as compared to plastic tanks. Thus, stainless steel storage tank in LG True water purifier is safer than regular plastic tank in other water purifier. The Stainless Steel Tank in LG True Water Purifier preserves the freshness of stored filtered water for an enhanced duration.  LG Digital Sterilizing Care Cleans and sanitizes water path, like hose, faucet and pipes, without using any harmful chemicals.  Auto Smart Connect is a technology that helps connect your water Purifier to your home inverter. Once the water purifier is connected to the home inverter, every time the power goes off it automatically takes inverter power to run the water purifier without any manual supervision.