Hi Neville:
I remember reading your initial post and being puzzled by it, but not
having anything of value to contribute.
As far as scrub pads contaminating pure silver, since silver is way
softer than steel, risk fo contamination is low unless you think
cleaning the silver is a sanding project.
You make my point. I myself use a plastic scrubber for my
straight/rounded electrodes, and have no problem. The point of using an
abrasive is to eliminate or reduce the electrode degradation, which is a
significant issue in my opinion, as far as it effects the brewing
process. You might be able to get away with using a paper towel to
clean electrodes, but you also might be surprised at the amount of
jagged edges are actually created on the silver electrode in the
standard "home brew" setup, over time.
Cleaning my Silvergen SG7 electrodes is much more involved. Luckily,
the degradation of the electrodes is very minimal due to the reverse
polarity used and the rapid water circulation. I have to use makeup
removers, which are made from a dense cotton, similar in shape to Q-Tips.
Since these are flat electrodes, ***the silver oxide particles that do
build up*** on the electrodes provides enough abrasion to reproduce a
completely smooth surface on the electrodes, thanks to the perfect
design of the electrode configuration.
~Jason
On 2/17/2015 5:21 PM, Neville wrote:
It would seem everything old becomes new again, trying to re-invent the
wheel. Scrub pads vs paper towel vs whatever else one may choose in
cleaning their electrodes, I know my preference, and it isn't steel or
plastic scrub pads, not that it really matters a hoot in the grand
scheme of things on the home front, it's a kitchen they are producing
this stuff in, not a sterile climate controlled laboratory environment.
{opinion}
OK, paper towel may have some salt residue or whatever else as a result
of the manufacturing process, but then scrub pads, and I'll assume
stainless steel pads for one example, contains any number of things,
chromium, nickel etc etc. There is no way I will accept that in the
electrode scrubbing process there will not be some contaminants ground
into the silver electrode, besides the excessive abrasive effect on that
electrode from scrubbing. Similarly with the "plastic?" scrub pads,
what contaminants are being ground into the electrodes from the plastic
during that scrubbing process, besides the added surface imperfections
created on those electrodes from scrubbing? And I don't believe any of
that can be eliminated simply by washing electrodes in DW? Electrodes
should be kept as smooth and imperfection free as possible I would have
thought. Even after probably the first batch produced using brand new
electrodes those electrodes will not be smooth anymore, why would anyone
want to compound that?
Where, and for what purpose are most producing their EIS? I thought it
was predominantly the home kitchen LVDC production method used by most
here, and for general use by all and sundry for all and sundry health
purposes? If not, then there's one reason new folk don't join or stick
around long maybe, it goes over their heads as simple home producers? I
don't have a need to know the complexities in the chemistry involved,
all I want/need to know is the basics and I can take it from there by
research to my satisfaction.
As for Jasons comment about nobody responding or stagnation or new ideas
or whatever, I posted something several months ago about fall out. I
filtered that batch and within days more fall out was observed, I
filtered it a second time and again *still* got some plating or fall out
on the bottom of my storage vessel a day or three later...??? And I
think the "fall out" or plate out was in the *centre* of the vessel. No
answers were forthcoming from memory, but my memory isn't what it once
was either so I guess someone will put me right on that. I put it down
to a bad batch of DW, among other "unknowns?" and NO, I don't bother
testing the DW prior to production any more, did plenty of that over a
time before and don't see a need to do it for an eternity for my
purposes. As well as it perhaps being a bad batch of DW from
manufacture I reckon the stir bar action had something to do with it,
{strange forces in nature or physics of which I fail to comprehend}
mainly because the fallout from memory was only in the *centre* of the
vessel as opposed to a general spread? Strange goings on indeed?
So there's something new of which I have never heard of or observed
before? This had never happened before in over 10 years of my
involvement with this stuff, and has not been repeated since? I'm
curious to know what was going on at *that* time?
Perhaps you could help me out here with this one Jason?
Back to the pads, perhaps someone can tell me then why scrubbing pads
would/should be considered preferable to paper towel, or even toilet
paper for that matter? I can live with the minuscule amount of salt
residue from paper, but I won't live with the metals in stainless steel
or poly-whatever it's called in plastic.
N.
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