U of S | Mailing List Archive | alt-photo-process-l | RE: mould over gum

RE: mould over gum


This is not a new technique, but a problem submitted me by a friend.
She told me that some of her gum bichromates have developed small white 
dots, and asks for something able to kill the mould and its spores but not 
the color of the image.
I am thinking to salicylic or ascorbic acid (or their salts) instead of the 
old and more poisonous mercuric chloride, or to some commercial agricultural

products. Have you any better solution?

I add a "squirt" of thymol solution to my gum when I mix it up. No mold.

Don Bryant

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