It's my understanding that CS, or EIS should only be made with distilled water. Tap water can contain minerals and metals which will contaminate the process. In the case of some generators, they simply will not accept that and shut off.
On Feb 12, 2011, at 11:47 AM, Marshall wrote:

If you are using tap water than you are making silver chloride, silver fluoride and possible silver nitrate. They are all photoactive and will eventually fall out in a bottle, or in your skin if you drink it. I would not touch that at all.

Marshall

On 2/12/2011 6:05 AM, Tony Moody wrote:
Properly made colloidal silver lasts a long time. More than two years in a
 polycarbonate bottle
left in a sunny window showed very little if any deterioration. Ref Ole
 Bob's experiments in the
archives.

The way I make it using tap water, it may last a week if kept cool and in
 the dark before the
silver falls out of suspension. Of course adding a tiny amount of H2O2 seems
 to re-dissolve
that.

OK,
Tony

On 11 Feb 2011 at 19:38, Deborah Gerard wrote about :
Subject : CS>CS falling out of suspesion

The statement below was posted in one of my other groups....could I get some clarity from people in the group about this please? thanks in advance
Debbie

As for storing CS, unfortunately it does not have a long shelf life.
The silver particles and ions fall out of suspension after a period of time. I think they lose their electrical charge and clump together, most
commercially available CS contain stabilizers.





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