U of S | Mailing List Archive | alt-photo-process-l | Re: Freezing gum solution

Re: Freezing gum solution

I do know that ammonium dichromate activity slows at low temps but I have no idea and haven't done this. I can't wait til you let us know if it works. We're told not to freeze jello so I might think it would follow that gelatin shouldn't be frozen, but gum???? I know they say not to mix gum with hot water, but freezing??? So many unknowns, so little time...

----- Original Message ----- From: "Marek Matusz" <marekmatusz@hotmail.com>
To: <alt-photo-process-l@usask.ca>
Sent: Tuesday, May 08, 2007 11:44 AM
Subject: Freezing gum solution


I have a question for veteran gum users, or maybe those with long memories. Short background. I print in batches and make enough gum solution containing gum, pigment and dichromate for a session. For 10 11x17 prints that amounts to 70 cc solution. The other day I made double the amount (that was a mistake on my part). At the end of the coating session I had a big batch of premixed gum solution with dichromate left over. Not wanting to waste perfectly good solution I froze it. Here is my question: does anybody think the solution is usable and what would be even more valuable, does anybody have experience with freezing sensitized gum solution?


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