Heres a follow-up to the 'Very High ppm' post I made a couple of days
ago.
A friend of mine (Geoff) told me he had produced colloidal silver
with a conductivity of 117 uS. Naturally I was sceptical, but he's
an an experienced and knowledgeable brewer, and meticulously careful,
so we had a coffee and talked about it.
Heres the story: For a month or two Geoff had been saving his
colloidal silver 'dregs' in a separate container. The purpose of this
was to accumulate about 300 mls (10 ozs) of extremely strong
colloidal silver to put into a Gel for external use. (I also do this
myself and it looks like axle grease). Geoff is a fastidious fellow
so these dregs were accumulated in a small jar that had been
thoroughly washed, and was capped after each top up. (Prior to this
project the jar had been used many times to brew CS so the chance of
external contamination from something other than silver is small.)
These dregs were collected from batches that had been made with 1.0
uS water and .9999 silver.
After collecting about 300mls of this inky stuff Geoff decided to
boost it even further, so he put his Silverwell (an Aussie
Silverpuppy) on top, put it in SWAP and Manual mode, turned on the
stirrer, and let go for about 24 hours. (Unfortunately he did not
measure the brew beforehand but I have a near identical jar of dregs
and it measured about 18uS).
After about 10 hours of brewing Geoff happened to measure the batch
and was surprised to discover it had hit 72.5 uS on his EC meter.
This was a surprise because usually when a batch is pushed too hard
it simply maxes out at about 20 uS and stays there (or falls) no
matter how long you run the generator.
So Geoff then decided to see how high he could raise the uS in this
particular jar of dregs. Each day from Oct 11 to Oct 24 he ran the
generator for 3.5 hours. As usual he kept records of everything. He
measured the batch before and after every batch. The generator
resulted in an increased uS on every occasion.
On day 1 the batch went from 72.5 to 82 uS. After each session the
uS would stabilise and drop back a few points, but ultimately his
most recent session on the 14th day started at 113 uS and finished at
117 uS.
By the way, the Silverwell Generator fits the top of the brewing jar
quite snuggly so significant contamination from the air is unlikely.
So regardless of the 'colloidal' or 'particulate' strength of this
particular mess it seems that he as produced CS with an ionic ppm of
117 ppm. I can't think of any other explanation for the increase in
conductivity, this batch contains nothing but silver and water and
has had very little exposure to the air.
So how could this high uS be possible? One crazy idea I have is that
this batch is now so laden with 'particles' that it has reached a
kind of 'colloidal saturation' that is forcing the silver ions to
stay in solution. The silver ions want to bind with something but
what if they can't find anything to bind with?
I want to mention again how meticulous this guy is. He has kept
detailed records of every single batch he has made in the last 5
years. He records brew time, water purity, final ppm, temperature,
and time of day. And as I said in the first post he cleans his
electrodes with an ultrasonic jewellery cleaner.
Any thoughts on this?
Cheers
David
(Footnote: I'm currently running my generator in my own jar of
dregs. It started out at 18 uS. It been running for about 6 hours now
and its up to 48.6 uS. Actually the brew is quite clear. The heavier
dregs have fallen to the bottom. )
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