[Jewelry making - Article 00112] - Re: [Orchid] Sparex No 2 101

[leonid surpin]

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>     Pickle is one of the safer things around if handled properly -
>     "pickle paranoia" is one of the great mysteries of the world. 

    And to really throw a monkey wrench in this whole discussion, I am
    going to state that the best and the safest pickle is 10% solution of
    sulphuric acid. Proper handling is the key here. After soldering the
    item should be boiled out in the acid solution. But if boiling out is
    done in any other vessel than pure unlined copper, the fumes can be
    dangerous and in large concentration can lead to the paralysis of the
    nerves controlling lung functions. That is where pickle paranoia
    comes from. If the copper pot is used the product is solution of
    harmless copper sulphate which can be dumped without further
    treatment. 

Leonid Surpin.
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