Quote Originally Posted by demoreal
Anyway, just find me an article about why pH of RO is important, not about stability stuff.
Hmm...I wonder if I'm reading this wrong then:

"And did you know that it is useless to measure the pH of RO-water or demiwater? Both demiwater and RO-water do not contain any buffer ions. This means that the pH can be as low as four, but it can also be as high as 12. Both kinds of water are not readily usable in their natural form."

Ph and Alkalinity