Sorry I left out some info- I guess I got too excited.
I use a quart jar, The electrodes are 10 gauge fine
silver, spacing is 2", with 4&7/8" under water. I used
a Fritos bean dip can to put the lite in, and I think
it did warm the bottom a little, it should have been
enough to set up a slow thermal convection. After 5
hours the electrodes were a little grey, so I wiped
them and switched the poles, then shut it off after 9
hours. The current varied slightly between 260
microamps and 300 microamps, so  .275 sounds close
enough to me for an estimate.

Thanks for the advice,  kathryn

__________________________________________________
Hi Kathryn
Need more info. What size batch are we taking about?
What was the current .2-,3 or ,275 mA? What are you
using for Electrodes and what size. Whats the spacing
on the electrodes. 
At .275 mA  I would run the batch 24 hours per quart
with electrode spacing of 1.5 inch's using a total of
12 inch's of 12 gauge wire (6 inch's per electrode)..

If you take a peanut can , drill a one inch hole in
the top center and a one inch hole in the side, put
the light bulb in the hole in the side and the cs on
top, this will work good on a short glass jar. The
thermal stirring wont go above 5 inch's or so.

The batches I make = 50 ppm or so on the Faraday
calculations but some of the silver is left on the
electrodes or on the glass container. The cs stays
clear most of the time. 

Faraday calculations work but their are many of other
factors involved to produce a good CS. Stirring is
very important as is current control per sq inch of
electrodes. Ode from silver puppy sells a magnetic
stirrer of which has solved many of my problems, 

I have used very low current before with somewhat good
results. I prefer to use 1 mA of current per 12 inch's
of 12 or 14 gauge wire or .5mA per square inch of
total wet electrodes. 

Hope this helps.

Sam L. 


On 12/7/06, bs clayton <[email protected]> wrote:
I am looking for some input on this new batch I did. I
changed 2 of the parameters, adding a light bulb under
the jar as a thermal stirrer, and I lowered the
current to .2-.3 mA.

So I have a 27V battery (3 nines)  hooked up in series

with a potentiometer and a multimeter, with the jar
now sitting atop a clear xmas light bulb, I ran it for
9 hours, wiping the electrodes off once and switching
the polarity once, just for kicks. It had a faint 
Tyndall effect when I turned it off.

According to my Faraday calculations, it should be
8.33 ppm. BUT it has no Tyndall effectnow, after
sitting overnight, which every other batch I have made
has had, but those batches were at 4 mA, not .275 mA. 
So I am missing my visual cue. Are the calculations
real? Is this stuff strong enough to use?

By the way, the water was really good, no conductivity
at all that I could measure with my ohm meter. And
this is my first try with very low current. 

Kathryn



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