I want say about the Kent RO system. This product is good and sales service is marvelous. This RO is good because it’s double purification. It is also looks very beautiful and the water tastes good. But the service cost of this product is very hight. I must say the water quality is very good. I have also tried other purifiers but I am not satisfied with other purifiers quality. It’s maximum capacity to store water is 12liter. 99% disease are water borne, so if you want RO system then buy Kent RO.