I have recently bought an RO system and the RO water comes down from 300 at
the input to 68ppm.  I then run it through a DI resin that then brings it
down to  near zero PPM on a TDS meter.

I believe that this is OK for CS.

Best,
J.

> -----Original Message-----
> From: Rowena [mailto:[email protected]]
> Sent: 27 June 2007 06:40
> To: [email protected]
> Subject: Re: CS>Water, RO is not Distilled
>
>
> When I bought my CS generator the old man I got it off, Peter Brooks in
> South Perth, Australia, gave us a demo on various aspects of CS
> making and
> also tested a variety of water I brought in; one from the local
> (very good)
> country water supply, one from my RO unit, and also a sample of distilled
> water.  He tested it with a TDS meter (total dissolved solids).  I came
> across the results the other day, but can't just remember where I
> put them.
> Anyway, the results were that the RO water was not ideal by a long shot.
>
> (I found it: PPMDS - parts per million dissolved solids, I
> suppose - Reverse
> Osmosis 122, Collie Harris River Dam water: 234)
>
> If you had nothing else at all in an emergency, and used RO water
> anyway, it
> would probably get you through the night, but don't buy an RO unit
> specifically for your CS making.  Get the RO for your drinking
> water.  Some
> complain that it takes out all the minerals, but hey, you can put
> those back
> in, but you don't want the fluoride and other chemicals and germs and
> possibly other nasties in your water, do you?
>
> I currently use a Purani RO system and run the "waste" water into
> the garden
> into a clay dish, from where it spills over into the garden soil.
>
> One thing I have found over the past - oo, must be fifteen or more years
> now - is that using RO water is extremely kind on kettles.  They stay new
> looking for years.  And years.
>
> Rowena
>
>
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