Hi, can anyone help please i have a 4 stage RO/DI setup and i am getting TDS reading at 3ppm after going through DI Resin. To give more details, incoming water is mains water at 3.5 bar. First stage is sediment filter (just replaced), second stage Carbon (also replaced), membrane, then finally DI. i cannot seem to get Zero on the system. I resisted the TDS inline to before the DI and i get a reading which fluctuates between 6 and 3, incoming reads 325ppm. Is the DI resin depleted or is the membrane trashed as well? Sorry i meant to say all TDI readings taken after 20 mins of running.
do i need to add anything to my set up.
Thanks
do i need to add anything to my set up.
Thanks