I just checked my TDS
after the membrane but BEFORE the DI
. Getting a reading of 36ppm. That works out to a 94-95% rejection considering it going in at 560-580
Now looking at my DI
closer, I'd say its close to 80-85% exhausted. I know I'll need to replace it, but am I depleting my DI
resin prematurely with my TDS
at 36ppm going in to it?
Whats normal. Or is this just "My" normal seeing my feed water is so poor.