I have a roll of PX from the 50's I need to process, I realize the fog issues (and likelyhood of failure).
I've never developed film this old, and typically process for about 25% more time, using HC110 to help tame fog without resorting to benzo. I don't have any of my older Dataguides anymore and as I recall the older versions of PlusX had different development characteristics. Anybody have relevent processing info, for either D76 or HC110?
erie
Erie, I assume that is Plus X Pan type 5062 emulsion. If so Kodak says:
D-76, small tank, 65 F for 6.5 min.; 68 F 5.5 min.; 70 F 5.0 min. 72 F 4.5 min.; 75 F 3.75 min. Agitation 30 sec. intervals.
All about 1 min. longer for large tank.
HC 110 dilution B, go 30 sec. longer than for D 76 at given temps.
My old frozen Plus X obeys this pretty well but shows a modest 0.1D fog in D 76 at 68F.
Good luck, Nate Potter, Austin TX.
Erie, data from 1965 shows Plus X Pan (I assume roll film) for D 76 with a 34.5 development number which translates to 6.0 min at 68 F for average contrast. 4.3 min. for lower contrast and 9 min. for higher contrast. HC110 dil B is about a min. shorter time. HC110 Dil. A is just too short at 3.5 min.
Nate Potter, Austin TX.
Erie, and if your film goes back before about 1955 Kodak lists Plus X 135 in D 76 at 7 min. at 68F, another minute longer than the 1965 data. Interestingly the same time for old Verichrome Pan, 7 min. in D 76.
Nate Potter, Austin TX.
Nate, all the other negatives that were with this roll are from 51-52 era (mostly images of the Korean War I'm scanning for a customer), They didn't realize that this roll was udeveloped as tehy never opened the can. Still in its nice little yellow aluminum can after all those years.
How cool! Best of luck to you!
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