I have been taking photographs of the inside of a commerical reactor using Kodak Tech Pan 120 roll film in a heavily modified Mamiya 6x7 camera. Because the film becomes partially irradiated and fogged I have processed it in Fotospeed FD30 (1:19 dilution, 12 minutes at 20c) which gives the film a push and increase in contrast, resulting in very acceptable negatives.
Fotospeed no longer manufacture FD30, does anyone have some experience of alternative chemistry that will give me a similar negative, what dilution, processing times etc?
Additionally how much does the above FD30 dilution, temperature and time actually push the Tech Pan film as the fotospeed information only quotes push values using a 1:9 dilution.
Thanks for any thoughts, input or pointers that can be provided