[Jewelry making - Article 00309] - Re: [Orchid] Ultrasonic tarnish

[Joseph Korona]

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>     Next time you have a piece that turns run this test. Polish off
>     tarnish Put fresh solution in a glass or Pyrex jar (in a typical
>     concentration) Put piece in for similar amount of time. If the
>     piece is tarnished then you need to use a DIFFERENT kind of
>     solution. If not old is contaminated don't forget about those
>     chemicals coming from the bench.

    it sounds like a good tip. i usually just make another batch of
    solution and it works for a while. i would like to know where the
    contamination is coming from.
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