[Jewelry making - Article 00051] - Re: [Orchid] [Source] Ferric nitrate

[Karen Christians]

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Rachel,

    For etching don't worry about the difference. The price difference
    can be huge so go with the technical grade. 

    Lab grade is important for most publishable scientific experiments
    or protocols. 

    However, used distilled water, not tap and store it with a
    desiccant. When you open the jar, use plastic gloves and keep a
    plastic scoop in the crystals. 

    Most important...add acid to water, not the other way around. 

Happy etching!
K
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