Processing OLD Tri-X

[rjphil]

HI - I have a few "mystery rolls" of (exposed) Tri-X that are probably 25 years old. Processed one as a test in D76 1:1, with Benzotriazole added per directions and the film was completely blank. Not even the edgeprint came up. Any thoughts on this, or maybe a different developer? Thanks !

 

[Mike Wilde]

I don't have old exposed film to try, but I do know that old film recently exposed needs heaps of exposure.

I use mid 60's long frozen film, that statrted as 100 iso. It is now around 12 iso in sensitivity, and needs 18 minutes in straight d-76, 20C, 30 seconds interval of 2 second agitiation with no additional anti-foggants to get anything like a normal gamma for the processed film.

So you say 'per directions' - do you mean some old film processing threead instructions, or the package directions?

 

[Bill Burk]

Maybe try exposing an image onto a tail of the film for the next time, at EI 64 (my favorite old Tri-X advice)... And perhaps skip the Benzotriazole - you will get fog, but maybe there will be traces of image. If you can develop by inspection, give it a long time in developer.

 

[rjphil]

Thanks. This is film that was shot "back then". I'll try a longer development time, and maybe a higher energy developer. I used the D76 times that I process at now, just added 10% for "insurance".

 

[luizjorgemn]

Thanks. This is film that was shot "back then". I'll try a longer development time, and maybe a higher energy developer. I used the D76 times that I process at now, just added 10% for "insurance".

Use d76 stock, 20 minutes...


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