Expired Kodak Super Panchro Press Type B

[David Bigeleisen]

I have an unopened box of Kodak Super Panchro Press Type B film. The box says that the film expired in 1951, three years after i was born. The box also says that one can develop the film in D50, D19n and Dektol. I have some of each of these.
I think the film has been stored at room temperature since it was new.
What is your best guess as a starting point for exposure and development, considering the age of the film?

Thank you in advance.

David

 

[blee1996]

I happen to have a few boxes of that film in various sheet size as well, also from 1950s. I have not used them yet and will be happy to hear what others have done to them.

I would guess shoot at iso 6-25, bracketing. And I will probably use HC-110, which is what I have and recommend for long expired film.

 

[film4Me]

Here's an old thread about it from 2016 ...

Kodak Super Panchro-Press, Type B

I've loaded up some 4x5 sheets of this to shoot tomorrow, and just glanced at the data sheet that was in the box. Even though the film expired in 1945, it's claiming a daylight speed of 500. For a 1940's emulsion, that seems awfully high to me. Can it be true?

www.photrio.com

 

[Don_ih]

What is your best guess as a starting point for exposure and development, considering the age of the film?

Expose at iso 12, 25, or 50. Develop for 2-5 minutes in Dektol diluted 1:3. If you happen to have some benzotriazole, add a bit to the developer. If you add benzotrialzole, add a minute or so to your developing. Ansco's slower films have aged well. The faster films, though....

If your film smells heavily like vinegar when you open it, you should probably not bother.