Re: Q: preservative -- was: gum-Spirts of Salts

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From: Judy Seigel (jseigel@panix.com)
Date: 02/05/00-02:23:13 AM Z


On Thu, 3 Feb 2000, Andre Fuhrmann wrote:
> So you could use glyoxal as a preservative?! I have a bottle of glyoxal
> sitting on my shelf, waiting to be good for something. How much would you
> add, say, to 100ml of a solution of 1:2 (water : gum)? Could you also use

I used 2 drops per ounce of mixed gum solution.

> glyoxal as a preservative for vandyke or cyanotype sensitizer to prevent
> fungus growth? Would that effect the sensitizer badly?

Folks say they use thymol for cyanotype A solution....(I just pluck out
the mold, which doesn't come back, BTW), but I never saw fungus on VDB.
Are you sure that's not Gloy?

Judy


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