Do not buy pure ultimate ro uv because for storage tank it requires add booster pump https://m.mouthshut.com/rs rel="nofollow" target="_blank" >@rs 1500 and it takes 1 hr to fill tank with 80 percentage of water wasted in wastage pipe. ie for 2 liter ro uv water u require 10 liter water or 100 liter water to fill its tank.
After filling if u take out one glass to drink then its inbuilt function start checking water capacity after 15 sec and keeps on checking since ur booster pump is required to be off their is no solution, to this problem. pressure of outlet water is slow. It is dead sure that ultimate pure it is for those only where water pressure is high. it is wastage of water and electricity .