Prob'ly Ken can answer this best, but a few things come to mind;
The green scrubby's often have soap in them or other contaminants.
Polishing the silver would not be necessary in any case, mild soap,
water and three good rinses in distilled after they're "cleaned", a
clean fresh paper towel after. The white scrubbers are the best, ones
without any grit in them.
What was your vessel made of? I like mason jars, plastic can sometimes
lead to problems.
The H2O2 may have had something in it, particularly if it was diluted
down from the high-grade stuff at 35% concentration. Anything like that
35% stuff has to have a stabilizer in it or the H2O2 will degrade,
particularly in light and sometimes violently. (In fact any
concentration or H2O2 will degrade in light.) The point being you may
have contaminated your vessel. Of course it may have had something in
it, like dried soap film or what-have-you from previous usage or
dishwasher soap ("Dries Streak-Free!" Oh, yeah!); the best is again mild
soap and rinse squeaky clean, trust your freshly thoroughly washed and
rinsed fingers to look with; rinse w/distilled water three times, put
upside down on paper towel to dry. Put your distilled into the vessel,
Then check your purity.
A TDS meter is sometimes a pretty blunt tool, EC meter that reads in
tenths of a U-Siemens is best, but run what you got.
Both rods? Were you running swap? Black sounds like silver oxide
exposed to light - like photo-sensitivity, huh?
HTH, Malcolm
On Sat, 2009-10-31 at 00:17 -0400, Catherine Creel wrote:
> Hi All,
>
>
> I know this question has been answered before. Unfortunately, I
> can't recall the answer.
>
>
> I set up to make some CS the other night (I'm using the Silver
> Puppy). I cleaned my silver rods with a clean green scrubbing pad
> until they looked shiny. I used steam distilled water and checked it
> with a TDS prior to beginning. I also cleaned my vessel with 3% H2o2
> and let it thoroughly dry. 1.5 hours later my rods were covered in
> black and wisps of black were in the bottom of my glass.
>
> What happened? Thanks.
>
> --
> Regards,
> Catherine
>
>
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