I wish there were, but I have not found it yet.

Marshall

Michael Leavitt wrote:

> Hi Marshall,
> If we make good clear Cs, how do we know what size the particles are?  For 
> me, the
> stuff I make works great as is, I have a very weak tyndall effect and it 
> usually
> doesn't turn golden color.  Well, maybe a weak golden color sometimes. I 
> expect good
> results from the Cs that I make, but the particle size isn't really something 
> that I
> can measure.  I run my generator at low milliamps because the feedback from 
> this
> site seems to indicate that lower current (around 1ma.) produces smaller 
> particles.
> I can accept this from those whose opinion I respect, you are included in this
> group, but it would still be nice to have some idea of particle size. Is 
> there a way
> at a reasonable cost to measure the size?
>
> Thanks
> Mike
>
> Marshall Dudley wrote:
>
> > There are a number of books, "Colloidal Chemistry" being one of them, that 
> > state
> > that the effectiveness of a colloidal catalyst is essentially 0 at the 
> > atomic
> > size, and 0 when the particles are macroscopic.  That the catalytic action
> > increases as the particle size increases until it reaches a peak then 
> > decreases
> > with additional particle size.
> >
> > I have read, but been unable to find lately that particles must be smaller 
> > than
> > 15 nm to pass through the stomach wall. (If anyone knows the reference for 
> > this
> > I would appreciate hearing from you).  Thus we do have two effects for 
> > taking
> > colloids internally, the effectiveness increases upon size to some point, 
> > and
> > the absorption decreases with size, approaching 0 around 15 nm.  The 
> > product of
> > these two actions will necessarily increase from atomic size, reach a peak, 
> > then
> > drop as the size approaches 15 nm.  The exact shape of this curve, and the
> > absolute peak are unknown, at least to me.  However results tend to make me
> > think that the peak in the range of 1 to 15 nm is fairly broad.
> >
> > This is an area which I feel needs additional exploration.  Problem is that
> > costs are prohibitive for other than large companies.
> >
> > Sincerely,
> >
> > Marshall
> >
> > Stephen Quinto wrote:
> >
> > > Marshall,
> > > what data do you rely on to support your claim of correlation between size
> > > and effectiveness?
> > > Stephen
> > >
> > > ----- Original Message -----
> > > From: Marshall Dudley <[email protected]>
> > > To: <[email protected]>
> > > Sent: Wednesday, March 29, 2000 9:34 AM
> > > Subject: Re: CS Quality
> > >
> > > > Ideal particle size is believed to be between 1 and 15 nm.  Apparently 
> > > > the
> > > > the effectiveness decreases if you go below 1 nm, having minimum
> > > > effectiveness around .1 nm, which would be one atom.  Once you get above
> > > 15
> > > > nm, there is reduced absortption through the stomach lining.
> > > >
> > > > There isn't any one answer as to how large the particles can be to stay 
> > > > in
> > > > suspension.  This not only depends on particle size, but also the charge
> > > on
> > > > the particle (zeta I believe it is called), temperature and so forth.
> > > Also
> > > > you have to contend with aggregation, so if the ppm is too high, the
> > > > temperature too high, or the ph too low, small particles can aggregate
> > > until
> > > > they are too large to stay in suspension.
> > > >
> > > > Marshall
> > > >
> > > > Arnold Beland wrote:
> > > >
> > > > > What is the  "ideal particle size"?  How big does a particle have be 
> > > > > be
> > > > > before it falls out of suspension?
> > > > >
> > > > > Best Regards to all,
> > > > >
> > > > > Arnold
> > > > >
> > > > > --
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