Nina,

     That's a good question.  I get my deionized water from a local science lab.  They use it for water sampling and general lab work.  The PWT water tester I have measures this deionized water @ .6 PPM.  The best DW I can find is poland springs which reads in @ 1.1 PPM.  From what I understand the lower the reading w/the PWT the better.  I think the major difference is that deionized water has a lower conductivity and therefore is better as a start solution for CS.  If my understanding is correct the CS from deionized water will have a higher amount of positive ionization, which is desirable.

     To those knowledgeable in this area, should one only use water with a reading of say, .2 PPM or better?  I have heard varying opinions on this matter.  Any insights appreciated.

Thanks,

Dan

>From: "Nina Silver"
>Reply-To: silver-list@eskimo.com
>To:
>Subject: Re: CS>Ionized Vs Distilled water
>Date: Sun, 21 Oct 2001 11:40:08 -0400
>
>
>----- Original Message -----
>From: daniel johnson
>To:
>Sent: Sunday, October 21, 2001 10:50 AM
>Subject: Re: CS>Ionized Vs Distilled water
>
>
> > I am aiming for consistency in batches. Using distilled or deionized
>water near boiling temp each time should be more consistent I believe.
>Unless the general belief is that seeding creates a superior CS to heating
>water.
> >
> > I wonder if deionized water is advised over DW. I have heard that by
>starting w/deionized water one ends up with a more positively ionic CS,
>which is a good thing.
>
>What's the difference between deionized water and distilled?
>
>Thanks.
>Nina
>
>
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