David AuBuchon wrote:
Lots of questions here! I guess the only "archives" to speak of are
the actual emails? I guess this group is intentionally low key.
1. Ions in solution:
I've read that ionic silver is in pure water is saturated at 13.3PPM.
Silver oxide has a solubility of approximately 13 ppm. Pure silver is
insoluble.
I have also read that there are not ions in the solution, but a
combination of silver oxide and silverhydroxide, and that each has
roughly 13PPM saturation point,
Silver oxide and silver hydroxide dissolve ionically, that is the anion
and cation separate in the water and both become ions that are free to
move about. Thus when dissolved you will have ions, and in fact such a
solution is what is referred to as ionic silver.
so the total "ionic" silver could get as high as 26PPM.
That is correct. Silver oxide has a solubility of around 13 ppm, and
silver hydroxide which has a higher solubility limit is limited because
the two continually convert from one to the other and back again. Thus
the silver oxide sets the upper limit of solubility for them when
equilibrium, and assuming an equilibrium of 1:1, that would set the
limit of silver to 26 ppm
This conflicts with the idea that only 13.3 can be reached.
No it doesn't. That only applies to silver oxide, not total silver. If
for instance you added silver citrate or silver acetate, which are also
ionic, the solubility would go way up.
Can anyone explain what the ions are actually doing in solution?
They are moving around due to Browning movement.
Why wouldn't people brew up to 26 PPM if that were the case.
They do, in fact that is considered pretty well the upper limit. However
since solubility is affected by temperature, ph and other physical
factors, we normally recommend stopping at around 20 so there is a
little head room.
2. Filtering:
I use 2 layered white coffee filters to filter my CS. I read
filtering may cause particles to clump together, which I guess is
called "agglomeration". Is this really an issue?
Yes it is. If the aggregate then the become bigger which decreases
their effectiveness and stability.
Also, I don't immediately trash the filters. I let them sit in the
funnel and if they still look clean, I use them next time. Sometimes
they turn weird colors. What is up with that?
That is a visual sign of the aggregation. Silver particles absorb light
depending on the particle size, the smallest in the UV range, the
largest in the IR range, and everything in between within different
colors of the visible range.
3. Charred anode:
Why does the anode turn black and look charred after brewing a batch.
Is that just the color of silver that is no longer smooth, but roughed up?
Yes it is and can also be some silver oxide depositing.
4. Sparklies:
I think my particle size is real good, and the maker of the gen
measured it at 2 to 4 nanometers at CSL. Still it sometimes looks
slightly yellow, which makes me worry I am not clean enough in my
process, and I am getting large particles. I can see a faint tyndall
with a laser pointer in pitch black. In the stream of red light, I
can see a tiny flash a light here and there that looks like a tiny
dust particle shining in the sunlight while blowing through the air.
They are by no means able to be isolated. Are these the same thing as
what people call "sparklies"? Is that an indication of large particles?
You should be able to see large particles, or sparkles with your necked
eye. You are likely seeing some air bubbles. Slight yellow is fine,
especially if the Tyndall is weak.
5. Argyria:
FYI, I think I have a mild sign of argyria. Only in the roof of my
mouth their is a grayish area. I keep an eye on it.
That is an odd place for it. It does not normally receive much sunlight
there.
6. Making CS more effective:
I read that 1 drop of 35% food grade H2O2 per 8 oz of CS can break up
particles into diatomic size particles! Is this for real?
Yes it is.
If this is the case, then what does it matter what kind of generator
is used? After adding H2O2, it all ends up the same right?
That is certainly possible. However if made improperly you might find
much of the silver drops out before you can add the H2O2, so you do have
to have at least a minimum level of quality.
In fact, if you brew to a very high PPM (which would tend to get
larger particles), that may actually allow more mass of silver to
ultimately end up in the solution after treating it with H2O2. From
that standpoint, a bad generator might be best! How do you know
you've used enough H2O2? Is it more effective because of the new
small particles or for some other reason? I have had IV H202 with no
effect. Also, diatomic particles would be smaller than mesosilver?
I think it was Brooks that initially gave us information that the
effectiveness was greatly increased by the addition of a little H2O2.
Experimentation and theory gave us why. If you add H2O2 to very high
PPM EIS, then it will often turn white, and the excess silver oxide will
precipitate out. This does NOT get around the solubility limit of
silver oxide.
FYI, I use a generator that runs on 2 double A batteries. Very very
tiny current. Takes 2.5 days to brew a quart to about 12PPM.
You better keep some around then, too slow to generate on demand.
Marshall
Thanks,
~David
p.s. the digest mode hurts my foggy brain, and now I am trying
individual email subscription. I guess I am spoiled using yahoo
groups were you don't need to get emails.
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