Excellent information------and quite correct.
Sincerely. Brooks Bradley.
James Vernon, Allison wrote:
> >I have only recently started making colloidal silver and sometines the
> water turns a >pale yellow as it cools and other times it turns a deep
> amber. Why does this happen >and what does the color mean? if I do not boil
> the distilled water first it remains clear >even after it has cooled and I
> don't understand this. Anyone know? Thanks much.
>
> One of the more cogent explanations for the often touted yellow color was
> offered by Peter A. Lindemann in his article about colloidal silver
> entitled: Colloidal Silver, A Closer Look. To quote Peter's article
> directly:
>
> There has been a fair amount of controversy in the public literature
> concerning the appearance of the "yellow" color. A lot of well meaning
> people have told me that "yellow is bad", "silver isn't yellow", "yellow is
> sulfur contamination", "yellow is iron contamination", and lots of other
> things. I finally found what I believe to be the answer to this question in
> a book titled Practical Colloid Chemistry, published in London in 1926. In
> the section on the "Colours of Colloidal Metals", sub-section on the
> "Polychromism of silver solutions" on page 69, I found the following
> statements: "The continuous change in colour from yellow to blue corresponds
> to a change in the absorption maximum of the shorter to longer wave-lengths
> with a decreasing degree of dispersion. This is a general phenomenon in
> colloid chemistry illustrating the relation between colour and degree of
> dispersion." This section goes on to describe the colors that show up in a
> wide variety of colloidal metal solutions. Interestingly, they ALL have
> ayellow phase.
>
> For true "electro-colloidal" silver, the particle size range thatcan appear
> yellow is .01 to .001microns (10 to 100 angstroms) because that is the size
> of silver particle that best absorbs theindigo light, leaving only its
> inverse color, yellow, to beobserved. The final transparent-yellow
> appearance only shows up after the particles have become evenly dispersed.
>
> Clear Color
>
> A few individuals who sell colloidal silver or colloidal silvergenerators
> claim that a clear solution is more desireable .According to Dr Bob Beck,
> silver atoms sinter off the wire in equal particle size (approximately .001
> microns) when using a DC generator of approximately 30 volts. Therefore,
> with a DC generator, distilled water will usually begin to turn a pale
> yellow color when the concentration approaches 7-10 ppm. Higher
> concentrations reveal a deeper yellow color, while lower concentrations
> (usually 1-5 ppm) display more of a clear color.
>
> Yours in health,
> James Allison
>
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