auto tds controller ro manufacture in Rajkot An automatic TDS (Total Dissolved Solids) controller for an RO (Reverse Osmosis) water purifier is a device used to monitor and regulate the TDS levels in the purified water. It ensures that the water quality remains within acceptable limits by controlling the rejection rate of water based on the TDS levels. The controller helps maintain the efficiency of the RO system and ensures the water produced is safe and suitable for consumption. When it comes to manufacturing such a device, the process generally includes: