[Neil Williams]

A question that has been asked on Carpet cleaning about pure water needs some answers from experts on the subject so:

1) Is the water still as hard after RO as before it goes in
2) Ph is not affected by going threw R/O
3) Hot pure water is not more acidic than cold
4) Pure water doesnt clean carpets any better than normal water and is not more aggresive

I have my opinions but would like some others first.

[Nathanael Jones]

1. Its softer after the RO,... normally 97% softer
2. PH is unaffected
3. Hot pure water is a teeny tiny bit more acidic,.. not enough to make a difference tho
4. I'd never use tap water to clean carpets again, pure water is MUCH better!

[Clive McDonald]

Soft usually means pure, deionised, or just purer.Rainwater is soft and the usual defintion is that soap lathers easily in it.How this translates is that rainwater is known to be much better and kinder for washing hair, so the statement, you wouldn't wash up with cold water so why use it on windows, Could be analgous to, You'd choose to wash your hair in the purest softest rainwater so why not your carpets?

Hot pure water tends to have more carbon dioxide dissolved in it, which is also called carbonic acid.This could affect Ph.There was a wfp company that was regularly quoted on here that said hot was dangerous because of this and must never be used.They now flog hotboxes and say hot is the best thing since sliced bread.So you are in an area where different experts say different things.

[SherwoodCleaningSe]

2 PH is affected slightly causing it to become more acidic as it strips CO2 out the atmosphere.
3 The hotter it gets the more acidic it gets as it strips even more CO2 from the atmosphere.

The thing to remember though is that we are only talking fractions here.  Did an experiment once with a ph measuring kit and you could just notice the difference in colour.

Simon.