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#1 Frank Cook

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Posted 25 August 2007 - 12:32 AM

I found some really old 35mm film. It's Panachrome. I have not been able to find much on this type of stock. Has anyone used it? I'm guessing it is B&W reversal film that was made in the mid-sixties.

The can is in good shape, and I would like to develop a small piece of the film to see if it is useable (maybe 6"). Could I use D-76?

Thanks for any advice. I would like to be able to use this film.
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#2 Frank Cook

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Posted 28 August 2007 - 10:24 PM

Okay, I need to correct the information on this film. It is DuPont 928B, negative perforation, panchomatic, non-halation, superior 4. Sorry about the mis-information in the first post.

The only thing I have found out is that the film is simular to Tri-X. The film has been stored on an office shelf for at least 10 years (Maybe 20 - 30 years).
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#3 Leo Anthony Vale

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Posted 29 August 2007 - 02:59 PM

The only thing I have found out is that the film is simular to Tri-X. The film has been stored on an office shelf for at least 10 years (Maybe 20 - 30 years).


Make that at least 30 years.

Dupont discontinued MP films in the 70s, at the latest.
It would correspond to when the B/W motion picture film market tanked.

They were good quality, their nitrate base was more stable than Kodak's.
Cellulose nitrate is gun cotton and DuPont started in the explosive business.

& 35mm would not be reversal.
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#4 Mark Dunn

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Posted 29 August 2007 - 03:57 PM

D-76 would be fine. You could load some into a cassette and shoot it in an SLR, but after all that time the base fog will be terrible.
Incidentally, there hasn't been any nitrate base since the 30s.
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#5 Matthew Buick

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Posted 29 August 2007 - 05:57 PM

there hasn't been any nitrate base since the 30s.


1951.
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#6 Brian Pritchard

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Posted 30 August 2007 - 05:34 AM

1951.

Kodak stopped making nitrate film in 1951 but China and Russia continued to make nitrate until well into the 60's. Incidentally Russia sometimes cut 35mm nitrate down to 16mm so it is possible to come across 16mm nitrate. It is usually stated that 16mm is always safety.
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#7 Leo Anthony Vale

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Posted 04 September 2007 - 01:46 PM

Kodak stopped making nitrate film in 1951 but China and Russia continued to make nitrate until well into the 60's. Incidentally Russia sometimes cut 35mm nitrate down to 16mm so it is possible to come across 16mm nitrate. It is usually stated that 16mm is always safety.


But DuPont's nitrate base was the best. Agfa/Ansco shrunk the most. Kodak inbetween.
I mentioned nitrate to point out that DuPont was high quality stock, in someways better than Kodak.

I've encountered Agfa or Perutz negs and prints from 1953/54 that would burn but not as fiercely as older nitrate bases.
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#8 Matthew Buick

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Posted 04 September 2007 - 02:55 PM

Perutz negs and prints from 1953/54 that would burn but not as fiercely as older nitrate bases.


What happened to Perutz? I have one roll of Perutzchrome in my freezer, it would be nice to know more about the companny it came from.
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