This has been covered already. When added to freshly brewed CS the
Tyndall increases and apparent quality goes down, when added to CS that
has been aged for 48 hours the Tyndall goes down and quality goes up. I
THINK the difference between the two is that newly brewed CS has a high
level of silver hydroxide that the aged does not, and that H2O2 converts
this hydroxide to oxide immediately and thus exceeds the oxide's
solubility level and it precipitates out. But that is an unproven theory.
Marshall
David AuBuchon wrote:
I can't reconcile these two statements about CS and H2O2. They both
make comments about how the Tyndall will change with the addition of
H2O2, but they seem to contradict. Can anyone reconcile these for me?
From: http://www.silvermedicine.org/h2o2archives.html
"This image was taken by using a laser pen to examine the tyndall
effect of a freshly brewed colloidal silver batch, just after the
addition of two drops of 35% H2O2. Prior to the addition, the
colloidal silver was crystal clear with a very faint tyndall. Upon the
addition of the hydrogen peroxide, which begins to work immediately to
atomize and ionize minute silver particles, there was a vast increase
in the tyndall effect, although in normal light *the solution remained
crystal clear*. One could easily observe slightly spiralling "clouds"
of minute particles by using the laser pen as the hydrogen peroxide
came in contact with the *silver particles*. This batch was a lower
quality batch with some "larger" ( but invisible ) particles.
When the same process is done with a highly ionic batch, without the
larger-sized silver particles, the tyndall effect would have increased
temporarily, then completely dissapeared as the minute particles were
ionized by the hydrogen peroxide."
From: http://silver-lightning.com/theory.html#HP
"When H2O2 is added to EIS (one or two drops per glass of EIS), it
will be noted that there is an immediate clearing effect. The Tyndall
(what you see if you shine a laser pointer though the liquid) will
become very faint as well. If the ppm of the EIS is sufficiently high
(25 to 30 ppm) a white cloudy precipitate may form as well.
There are a number of reactions that occur. H2O2 is normally thought
of as an oxidizer, but it can act as a reducer as well. Also silver is
considered a catalyst for H2O2, but in actuality gets directly
involved in the reactions.
The H2O2 reacts with the silver particles, producing ionic silver, a
combination of silver hydroxide and silver oxide. This makes the large
particles disappear, reducing the tyndall. However H2O2 also reacts
with the silver oxide and silver hydroxide producing a 2 atom colloid
of silver plus oxygen (and water in the case of silver hydroxide).
Over time this 2 atom colloidal particle can end up being converted
back to silver oxide and silver hydroxide, and so forth. The final
result is a mixture of ionic silver (hydroxide and oxide) and very
small colloidal particles. Thus if you add H2O2 to freshly made EIS,
you can sometimes see the oxygen bubble off, and the tyndall may
change significantly. But more importantly, the particulate portion of
the EIS will go from being medium or large particles to many more very
small particles, and the particle content will increase from a typical
5-15% to around 30-50%. If you have a strong tyndall from large
particles, it will decrease, and if you have a weak or no tyndall it
will increase with the formation of the 2 atom particles. This
enhances absorption, as well as effectiveness. Note that it is
recommended to let the EIS sit for 5 or more minutes after adding the
H2O2 to let it stabilize. Also some experts recommend letting EIS age
for 2 or more days before adding the H2O2, and experiments by me
indicate a more consistant effect if this is done. For some images of
the effect H2O2 has on silver particles"
~David
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