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Response to bw ifrared processing

from Jeff White (zonie@computer-concepts.com)
I will start by saying that I have virtually no experience with infrared film. Benzotriazole is a restrainer that I like to use in my paper developers. Your mix of Benzotriazole may be too strong. I usually start with a 2% mix; 20 grams to 1 liter of water. With paper I will start by processing a small piece of paper in just fixer and then wash to see what a clear blank piece should look like. I then start taking small pieces of paper and run it through the whole process adding a little of the 2% benzotriazole to the developer, maybe 10 ml, each time until the paper that went through the developer, stop and fixer is as clear as the Fixer only piece. I would think you could sacrfice 1 roll of film and do some kind of test like this to find out the correct amount of restrainer to add. I would think that a small amount of fog would be ok, with paper too much benzotriazole makes a big difference in the speed of the paper so I think it would be important not to go to far with the restainers strength. I hope this helps.
(posted 9389 days ago)

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