Expired film (ORWO)

[chandrastudios]

so I've been using these expired films by OROW that I got from a studio. He used to bulk load it and sell it. I don't mind the kind of results it gives me but now i'm starting to think if there is a way to get better results from these films...like any formulas that works better, or anything that I can do to get better results...also what is actually happening when in the film that gives us this result ?

 

[koraks]

I think you meant "ORWO". I'll change the thread title.

what is actually happening when in the film that gives us this result

This might be something like moisture damage, chemical contamination or simply degeneration of the emulsion itself (some kind of crystallization process). There's nothing you can do to prevent this once the film is already in this state.

 

[Sanug]

The violet spots look like a leftover from the anti halation layer. With Orwo NP15, you will need an extended fixing time in thick acid fixer, or a 10% sulfide bath for the removal of the anti halation layer.

Old NP15 in 35mm is often usable, NP 20 and higher sometime suffers fogging. 120 film may have issues from the backing paper reacting with the emulsion.

Fogged Orwo NP20. Not usable.

Excellent Orwo NP15, Exp. 1991.
Developed in Fomadon LQR, 1+10, 7 Min.

 

[koraks]

10% sulfide bath

sulfiTe, not sulfiDe.

 

[Sanug]

Yes, thank you.

 

[DeletedAcct1]

The violet spots look like a leftover from the anti halation layer. With Orwo NP15, you will need an extended fixing time in thick acid fixer, or a 10% sulfide bath for the removal of the anti halation layer.

Old NP15 in 35mm is often usable, NP 20 and higher sometime suffers fogging. 120 film may have issues from the backing paper reacting with the emulsion.

View attachment 381697
Fogged Orwo NP20. Not usable.

View attachment 381698
Excellent Orwo NP15, Exp. 1991.
Developed in Fomadon LQR, 1+10, 7 Min.

Have you tried using Ilfosol 3 with NP20?
Ilfosol 3 contains benzotriazole.

 

[chandrastudios]

I think you meant "ORWO". I'll change the thread title.



This might be something like moisture damage, chemical contamination or simply degeneration of the emulsion itself (some kind of crystallization process). There's nothing you can do to prevent this once the film is already in this state.

I tried a batch with the fine grain developer (with glycin), it did perform better than the D - 76 formula....the density of the film came out much better....and also shooting on a lower ISO helped....and thanks for the correction!

 

[chandrastudios]

The violet spots look like a leftover from the anti halation layer. With Orwo NP15, you will need an extended fixing time in thick acid fixer, or a 10% sulfide bath for the removal of the anti halation layer.

Old NP15 in 35mm is often usable, NP 20 and higher sometime suffers fogging. 120 film may have issues from the backing paper reacting with the emulsion.

View attachment 381697
Fogged Orwo NP20. Not usable.

View attachment 381698
Excellent Orwo NP15, Exp. 1991.
Developed in Fomadon LQR, 1+10, 7 Min.

I'm using the fixer that is used for fixing x - ray sheets in the hospitals, I don't exactly know what kind of fixer that is. The bottle just mentions Rapid fixer. Its a 3 liter bottle that I dilute to make 13 liters. There's not much information on the bottle as well.

 

[DeletedAcct1]

I tried a batch with the fine grain developer (with glycin), it did perform better than the D - 76 formula....the density of the film came out much better....and also shooting on a lower ISO helped....and thanks for the correction!

d76 is not the "cleanest" formula around, it gets rather high DMin....