KPK740 wrote:Dude what.....
Don't buy water purifier with TDS controller. All these just add impure water to Purified water with only single stage Filtration mostly UF/UV without RO Filtration.
TDS lower value also no problem, we get necessary minerals from food easily. These all are marketing strategies. Those who don't know reality fall for it.
It does not add impure water, it adds water which has not gone through RO loop (which is only responsible for controlling TDS levels).
Water Input 1: Purified water output from the RO membrane
Water Input 2: Purified Water from Activated Carbon / UF Membrane
Final Water Output: Mix of two water inputs in the required ratio.
Water is already purified before it goes to the RO membrane, RO membrane is not a purification step.