[Jewelry making - Article 00886] - Re: [Orchid] Katherine Palochak's Iridescent Patina

[John Burgess]

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    *G'day; I really don't know much about the effect of this, but am
    pretty sure it wouldn't be too lethal, bur would suggest that care
    be taken not the inhale very much of it. I have had great experience
    in breathing air tainted with hydrogen sulphide gas, as I spent many
    years working in teaching laboratories where the air always reeked of
    the rotten egg stink. I don't think that at 84 I can say it has done
    me all that much harm! I cannot see that the addition of ammonia and
    salt should make much difference. Just be careful.*

John Burgess; johnb AT ts.co.nz of Mapua, Nelson NZ

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