tds meter

[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