Kent has the best water purification technology, it has advantages over other water purifiers as it offers you the following: Double purification of RO followed by UV, which removes even dissolved Impurities. The patented TDS control System retains essentials Natural Minerals. 7 liters of purified water storage capacity that makes water available on demand, even in the absence of electricity/water supply. Membrane is warranted for the period of 1 year. Computer Controlled Operation with filter Change Alarm and UV Fail Alarm. After a pre-set time, Filter Change Alarm is audible which indicated time to replace the filters. If filters are not changed within next 60 hours of use, the purifier stops functioning. In case the UV stops functioning, UV Fail Alarm is audible. The purifier will not function until the UV lamp is replaced. Spin-welded RO Membrane Housing to prevent tampering. Fully automatic operation with auto-start and auto-off.