TDS meter

[Willow]

Originally Posted by Railskinner

so theTSD meters the quality of water that come out of the membrane and after the DI unit. I thought maybe u would test before membrane and then after DI unit

tds tests for disolved solids in water. doesnt matter what water you test it will tell you in ppm what the condition of your water is. its a good idea to test your source water as well as your production water.

[Kryten]

And high tds = algae and/or diatom growth, right? Anything else important that you learn from it?

[TheReefGeek]

You learn about when to replace your various RODI cartriges, and the membrane itself.