BAC1967
Subscriber
That was my experience with the above recently rediscovered roll of Tech Pan. When developed normally (for me) in Diafine, I got edge markings that were only just barely, barely visible, and images taken at EI 200+ were equally almost invisible. The easiest way to identify Tech Pan is that it's on a thin ESTAR (polyester) base that is obviously harder to tear than acetate.
I don't know if Tech Pan would be amenable to Diafine with more time in Part B or if it's just a non-starter. But I just bought more HC-110 anyway so I'm good.
The one roll of Tri-X that came in one of my bulk loaders was long expired. I did a bracket test on a short roll then developed it normally and came up with an ISO of 32. I use it as a slow film and still get good results.
