Some help needed regarding an old film emulsion labeled as "ORWO N3 25 ISO"!

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MariusV

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Hello,
I would like to ask for the Community to help me with some information regarding how to process an old film emulsion.
Context: I was gifted, through the Emulsive Secret Santa, among others 2 rolls of film: one was a Lomo Purple and the other was spooled by the owner and labeled as "ORWO N3 25 ISO". I exposed that roll at ISO 25 and now I am in a bit of a pickle: how to develop the roll?
I searched online and could not find any information on this film stock. I asked ORWO but they have yet to respond to my email (doubt that I will ever get an answer from them ...) and other online photography forums have not heard of this emulsion. My Secret Santa is none other than Frank Thorp V. I tried to contact him but he did not respond until now.
Can someone help me with information on this film stock and how to develop it?

Thanks,
Marius V.
 
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MattKing

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Welcome to Photrio.
I've tweaked your thread title in hopes of it attracting more responses.
We hope that you will get the help you need, and encourage you to stay and join in generally!
 

Molli

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Welcome Marius !
I've probably only found the same things you have - an "Orwo Pan 25" in Wikipedia's list of Obsolete Films and the Massive Dev Chart's Developer Options for that film. I've never used any of the developers they list, but perhaps someone who has would be able to extrapolate times for the developers you have on hand?
This is the Massive Dev Chart listing for Orwo Pan 25:

I'm sorry not to be of more help, but hopefully someone more informed than I am (i.e. everyone else here at Photrio ☺) will be able to give you better information.
Good luck and, again, welcome to Photrio!
 
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MariusV

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Joined
Aug 18, 2025
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Location
Bucharest, Romania
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Welcome Marius !
I've probably only found the same things you have - an "Orwo Pan 25" in Wikipedia's list of Obsolete Films and the Massive Dev Chart's Developer Options for that film. I've never used any of the developers they list, but perhaps someone who has would be able to extrapolate times for the developers you have on hand?
This is the Massive Dev Chart listing for Orwo Pan 25:

I'm sorry not to be of more help, but hopefully someone more informed than I am (i.e. everyone else here at Photrio ☺) will be able to give you better information.
Good luck and, again, welcome to Photrio!

Thanks Molli!
So this might be ORWO Pan 25?
 

Molli

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Thanks Molli!
So this might be ORWO Pan 25?
Unfortunately, that was the only Orwo film I could find with an ISO of 25. I thought, perhaps, the developing times listed for it might provide a starting point for you.
I don't have any personal experience of your film, I'm sorry to say. I'm hoping one of our more knowledgeable members might have a better idea and advice to offer you.
 
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