## You can make EIS well beyond 20 PPM, however, having it look like
something you'd let your dog drink is another matter.
I've found that around 30 us [or PPM ionic] is about the limit, but Ionic
isn't all that there is and it can take a fair a amount of time for ions to
crystallize out of solution.
I've gone as high as 87uS and it took a month to drop back to 30 uS and
stay there...in the meantime, a nice looking batch, but since it took a
very long time to get to 87uS as conductivity rise rates leveled off from
constant current linear past 30 uS...I had no idea how strong it really
was. Maybe even 200 PPM..I dunno. [I suppose I could have extrapolated the
chart, but didn't]
If you change the electrode configuration, the manufacturers PPM auto off
settings, a "ballpark" guess to start with using the best WRONG tools
available.... are *out the window*.
Even a minor change makes a major difference and a coin has completely
different discharge characteristics than a narrow flat strip or a smooth
round rod.
Ode
The only way to exceed the 20 ppm is to make silver salts instead of EIS,
which all will cause argyria. Actually there IS one way according to some
postings on here a month or so ago. Supposedly you can slowly boil EIS
down to a higher ppm withour it precipitating out, apparently the silver
oxide/hydroxide will convert to colloidal and not fall out, but I have
never tried it.
How about H2O2? I haven't really tried that one yet. That will be next, I
guess.
For some experiments run long ago and reported here, H2O2 appeared to
improve the effectiveness of EIS by from 5:1 to 10:1 if I remember right.
Marshall
Dick
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