Processing Ilford PanF 50 in Scala Black and White Reversal Processing Kit

miaaglanz

Member
Joined
Aug 28, 2024
Messages
2
Location
Mexico City
Format
Medium Format
Crazy experience doing this process and would love to learn how to fix it for next time!
I followed this forum in order to figure out my processing times for my PanF 50 film shot at ISO 25, 120mm film using the Scala Black and White Reversal Kit.
All went well during the first stages of the process. I developed at 22C for 10 minutes and then followed the instructions for Scala 160 at 24dgs as according to the manual.
When I re-exposed the film it looked great, very yellow and clear, however I noticed the emulsion was beginning to flake on the sides. It did not go well from here. During the second development the emulsion began to flake off in large chunks, which I noticed when I rinsed and there were large pieces of emulsion when I dumped the water. I stopped rinsing and checked my negative strip. Half of it, the last 3 frames and first three frames had completely worn off, and were blank. The remaining negatives seemed to have great contrast, but the emulsion is barely holding on.

Could I have rinsed too much? Bleached too long (6 minutes)? Agitated too vigorously? Should I add a fixing agent?
I am thinking of trying again with another roll, this time bleaching for 5 minutes. I have also ordered Rollei RBMF Black Magic which I will add to the second developer. Could this help?

I shot the roll two months ago, so it already may be deteriorating?

Please help! I am new to this process and am I am hopeful I won't destroy all my film.
 

DeletedAcct1

Member
Joined
Sep 24, 2020
Messages
869
Location
World
Format
35mm
What causes the emulsion to flake off is not an emulsion damage, the emulsion doesn't melt, otherwise you wouldn't get flakes.
What fails is the subbing layer, an adhesive layer between the emulsion layer and the base, and there's nothing that can be done to prevent its failing other than reducing the bleach concentration, the time spent in the bleach plus a lower temperature (say 18°C).
Not all b&w films are up to a permanganate bleach. Generally stick with Fomapan R 100, Fomapan 100, Adox Scala 50 and nothing else.
And don't use the final fixer bath at regular strenght (1+4). Try 1+9 instead.
 
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