- Joined
- Jan 10, 2019
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Hi all. I have a Typhoon III 5 stage RO/DI system with two DI membranes. On and off I have had a lot of trouble with the TDS lately. Within the last week I have changed all the membranes and one of the DI membranes (accidently only ordered 1 - waiting for the other to come). I just changed the membranes in January of this year. The problem is my brand new TDS meter is showing 250 TDS. This has been confirmed with a handheld TDS meter. However the water leaving the DI membranes is showing 0 TDS. The last stage after the DI membranes is the DI resin cartridge which was changed last week. So the first three stages and the DI membranes are producing 0 TDS but once it enters and exits the color changing resin cartridge it is showing 250 TDS. What is wrong? Thanks