alkaline water purifier manufactur in rajkot To select the best alkaline water purifier for your home, consider your water's source and its Total Dissolved Solids (TDS) level. Many alkaline water purifiers use a multi-stage process that includes reverse osmosis (RO), which is highly effective but can lower the water's pH by stripping it of natural minerals. To counteract this, a subsequent alkaline filter re-mineralizes the water, raising its pH to a desirable level of 8 to 9