When I bought my enlarger in 2015 it came with a lot of ancient goodies like old Agfa paper. There are also a few proper glas ampules of Tetenal Neofin Blue and Red. One day I will have to try them out.
The packages must be from the 60s. The documentation lists times for various films: Adox, Ilfords Pan F, FP3, HP3 and HPS. There is Perutz, which I never heard about.
Anyway the documentation lists developing times for Neofin Blue and Red. The listed Ferrania Films are P24, 27, 30, 33 and 36. In case anyone has tried/would like to try Neofin Blue with P30 I'm going to give you guys the data. I don't know if the developer changed over the years.
Some remarks from the docs: Neofin Blue is low contrast, and should be perfect for P30. Most samples I've seen are quite contrasty. Another note is that Neofin requires rather short exposures, they recommend reducing exposure by 0.5 to 1.5 stops, compared to the usual exposure (but weren't DIN/ASA half the value of today, back then?). Anyway, they say the exposure should be 'just enough' for best results. So maybe ISO80 will be slow enough with Neofin?
The time for P30 at 20°C (1 ampule diluted to 500mL) is 15 Minutes (Blue) and 9 minutes (Red). If you want to develop two films in the tank simultaneous the times change to 18 and 12 minutes, respectively. Times should be extended by 25% for 120 film, btw. Was that a common practice with rollfilms in the 60s?
