Ro/DO set up

[SteveDola]

Question about TDS readings from your RO membrane before the DI polish...whats your typical readings?

 

[PSU4ME]

Going into the DI stages, I read 3 tds. About 130 out of the tap. After first DI stage it reads zero and I have a second DI to make sure I fully exhaust the first one as it does “something” past the color change indication.

 

[MURedhawk]

Usually around 3; out of the tap reading (it is from a well) is usually in 70s-80s
(Spectrapure System with TDS)

 

[Chris A.]

5 before the di

 

[SteveDola]

TY all. I just set up a used RO/DI and have dual RO membranes and was getting 12 tds but after running for an hour the TDS dropped to 4/5 which is prolly more in line with what I should expect.