RODI water 6ppm sodium

[Zachhll]

I just received an ICP on my RODI water. How can it have 6ppm of sodium when I have multiple tds sensors showing 0 TDS. I have the Cation, Anion, and mixed bed that were all replaced just before I ran 10 gallons of water through and was getting 0 TDS before and after mixed bed.

 

[exnisstech]

I quit trusting ICP especially for RODI. I sent two samples in from the same container of RODI and received two totally different analysis results both from the same company.

 

[Zachhll]

Good to know. I actually received this test for Free at reefapalooza. I also sent out an ATI ICP at the same time it will be interesting to see what the difference in results is.

 

[Randy Holmes-Farley Verified Community Expert]

I agree it may not be accurate, or it may have been contaminated after you produced it. Accurate or not, however, the test is fine for usability of the ro/di.

In fact, I know these ro/di tests are often free with a tank test, but I don’t recall seeing one where anything problematic was detected.

 

[exnisstech]

Good to know. I actually received this test for Free at reefapalooza. I also sent out an ATI ICP at the same time it will be interesting to see what the difference in results is.

ATI was the company that gave me the varying results from the same RODI. Don't be surprised if your ATI results are different than your current test. Different equipment, technicians etc. Then if they are different which you want to believe becomes the chore.