Considering that they called silver a heavy metal, I would not put much 
credance in any of the rest of
it.  Obviously they have not done proper research.

Marshall

Fred wrote:

> The Canadian Gov. silver site: 
> http://www.env.gov.bc.ca/epd/cpr/criteria/awqcfs.html
> states basically that "solver ions are 300 times more effective then silver 
> chloride
> (if you salt water) and 15,000 times more effective then silver sulphide. The 
> chance
> of using water with sulphide in it is small but the point is that other 
> silver compounds
> may be just as non-effective! As I always stress, you must know what you 
> start with,
> to get an effective form of silver for delivery to your body.
>
> <snip>silver is one of the most toxic of the heavy metals to freshwater 
> micro-organisms.
> <snip>
>  The effect of speciation on the acute and chronic toxicity of silver was 
> compared using the fathead
>  minnow as the test organism. Silver sulfide, silver thiosulfate and silver 
> chloride were compared to
>  the silver ion, added as silver nitrate. The tests were flow-through in soft 
> water at 25°C. Silver
>  chloride was found to be 300 times less toxic, silver sulfide was 15,000 
> times less toxic, and silver
>  thiosulfate was 17,500 times less toxic than silver nitrate.
>
>  Most existing silver criteria, objectives or regulated amounts are not based 
> on the free ionic
>  monovalent ion, which is acutely toxic to aquatic life. Instead they are 
> based on total silver which
>  includes the metal, complexes and precipitates, all of which are very much 
> less toxic than the
>  monovalent ion. </snip>
>
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