Some DI resin are blue and will turn to brown when exhausted. Sometimes you can just have bad resin in a new DI. If you have TDS meter you can check your Membrane before DI unit and see what your reading. Like Jim said you want it around no higher than 02 after membrane and than after DI your reading 0.
yea 10tds before or after the di is high. i would change the filters out and see what it comes out as you may need to change the membrane or just need to be flushed. 2 tds after the membrane may or may not happen i actually have 6 coming out of my membrane but i also have like 400 tds coming out of the tap.
I just checked my Di. It's still full and the same color that's always been... I'm going to take samples to the store to have it checked out. Before and after membrane and after DI...
Yes, water is flowing thru.
I just got back from the store. I have never used a TDS meter myself so I was unsure of how it worked. The guy at this store said it was 2.27 after membrane and 1.4 after DI.
I'm planning on replacing the filters tonight. The ones before the membrane.