tds meter

[fiorano]

ok thanks guys

[digital-audiophile]

Man, I wish I had 14PPM coming out of my tap!

[o.c.d.]

I was told or read somewhere that the TDS increases over time because the water is so stripped of everything that is will pull and mix with air. The minute particle in air cause the TDS to rise over time. So all storage water should be in a tightly sealed container.

[Myka]

Originally Posted by Lance

Yes, I've found TDS increases quite rapidly in storage. Don't really know why, but it does.

That is because RO/DI water is very "aggressive", it pulls all sorts of crap out of the air very quickly. This is one of the theories behind why many people believe it is detrimental to our health to drink RO water.

Google "RO drinking water bad", or check this out: http://watershed.net/purified.aspx