- Joined
- Feb 16, 2019
- Messages
- 51
- Reaction score
- 15
I recently changed all the filters on my ro/di system, and after flushing everything out I tested 4 tds coming out of the ro membrane and 4 tds exiting from the di resin. All of these filters were purchased new, is it possible that the di resin is faulty? The water coming into the system was tested at 285 tds. For clarification these values are all in ppm. Most of the time placing these filters are easy, but this has been a real headache chasing 0 tds. Any help would be greatly appreciated.