Varied TDS Readings

RonPeter · #1 11-02-2008, 08:46 PM

Quote:

Originally Posted by Jaws

I've got it hooked up to a sink in the basement that is right beside the washer and dryer. Is it possible that other sources like having the washing machine on at the same time is contaminating the water?

My guess would be when having the washing machine on at the same time you don't have enough water pressure for the membrane to work efficiently.

Jaws · #2 11-02-2008, 08:50 PM

The pressure guage still shows 50 to 60 on average.

RonPeter · #3 11-02-2008, 08:55 PM

I believe the membrane is most effcient at 80 psi.

Jaws · #4 11-02-2008, 09:01 PM

K, so I've tested it over the last 24 hours and the reading is substantially less when its first filtered (2 to 6) than after its sat for 24 hours (30 to 50).

RonPeter · #5 11-02-2008, 09:04 PM

Thats the TDS of your saved water after 24 hours? If that is you have something leaching into the water from water pail you are saving the water in I would guess.

Canadian · #6 11-02-2008, 09:35 PM

Quote:

Originally Posted by RonPeter

Thats the TDS of your saved water after 24 hours? If that is you have something leaching into the water from water pail you are saving the water in I would guess.

+1

But additionally, you should absolutely be getting 0 TDS coming straight out of the RODI unit. Run the output from the RODI into a clean glass and check the TDS. It sounds like you're getting contamination from your storage vessel.

Jaws · #7 11-03-2008, 03:50 AM

I just tested it right out of the RO unit and it's reading 6. Could I have installed the RO membrane incorrectly? It didn't look like there's much to screw up in the installation.