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Orio
Joined: 24 Feb 2007 Posts: 29545 Location: West Emilia
Expire: 2012-12-04
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Posted: Thu Apr 26, 2012 11:39 am Post subject: 1-2 yrs expired chemicals use |
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Orio wrote:
What is your experience with 1-2 years expired chemicals still closed in original bottles, never opened?
Do you need to make times longer when using them? And by how much, on average?
(I know it's a trial and error thing... I'm just trying to start testing from an average point). _________________ Orio, Administrator
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wupdigoj
Joined: 18 Mar 2010 Posts: 85
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Posted: Thu Apr 26, 2012 2:23 pm Post subject: |
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wupdigoj wrote:
I suppose it will depend on the type of chemical. Stop bath, humectant and probably fixer and (some) toners will be probably just fine. Developers can also be fine or useless. Just try it with an unimportant roll.
In my experience, if the bottles are completely air-free, the chemicals will be just fine for many months (or even years) after the expiration date, even if previously opened and partly used. Rodinal will last (almost) forever.
Please, take my advice with a pinch of salt, it could be wrong for you!
Javier |
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Orio
Joined: 24 Feb 2007 Posts: 29545 Location: West Emilia
Expire: 2012-12-04
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Posted: Thu Apr 26, 2012 2:30 pm Post subject: |
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Orio wrote:
Thanks Javier!
I read some on the net, and apparently many people agrees that bottles of developer that were never opened and still factory airtight will work acceptably well even after expiration date. _________________ Orio, Administrator
T*
NE CEDE MALIS AUDENTIOR ITO
Ferrania film is reborn! http://www.filmferrania.it/
Support the Ornano film chemicals company and help them survive!
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Attila
Joined: 24 Feb 2007 Posts: 57840 Location: Hungary
Expire: 2021-11-18
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Posted: Thu Apr 26, 2012 5:18 pm Post subject: |
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Attila wrote:
wupdigoj wrote: |
I suppose it will depend on the type of chemical. Stop bath, humectant and probably fixer and (some) toners will be probably just fine. Developers can also be fine or useless. Just try it with an unimportant roll.
In my experience, if the bottles are completely air-free, the chemicals will be just fine for many months (or even years) after the expiration date, even if previously opened and partly used. Rodinal will last (almost) forever.
Please, take my advice with a pinch of salt, it could be wrong for you!
Javier |
+1 I did use successfully 10yrs expired C41 chemical but had to find with sulfur on film surface 1-2 yrs no matter I think. _________________ -------------------------------
Items on sale on Ebay
Sony NEX-7 Carl Zeiss Planar 85mm f1.4, Minolta MD 35mm f1.8, Konica 135mm f2.5, Minolta MD 50mm f1.2, Minolta MD 250mm f5.6, Carl Zeiss Sonnar 180mm f2.8
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ForenSeil
Joined: 15 Apr 2011 Posts: 2726 Location: Kiel, Germany.
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Posted: Thu Apr 26, 2012 5:58 pm Post subject: |
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ForenSeil wrote:
As Attila said, even many years above the expiration date should be no problem with unopened bottles as long as long as they were not stored at high temperatures on an attic etc. or exposed to sun.
These chemicals are not radioactive etc., they won't destroy them self
When stored cold, artight, without sun, in PTFE or glas bottles with good stoppers, maybe even 100 years are no problem.
It's like with wine _________________ I'm not a collector, I'm a tester
My camera: Sony A7+Zeiss Sonnar 55/1.8
Current favourite lenses (I have many more):
A few macro-Tominons, Samyang 12/2.8, Noritsu 50.7/9.5, Rodagon 105/5.6 on bellows, Samyang 135/2, Nikon ED 180/2.8, Leitz Elmar-R 250/4, Celestron C8 2000mm F10
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Orio
Joined: 24 Feb 2007 Posts: 29545 Location: West Emilia
Expire: 2012-12-04
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Posted: Thu Apr 26, 2012 6:15 pm Post subject: |
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Orio wrote:
Thanks! I'll make sure not to drink them with roast _________________ Orio, Administrator
T*
NE CEDE MALIS AUDENTIOR ITO
Ferrania film is reborn! http://www.filmferrania.it/
Support the Ornano film chemicals company and help them survive!
http://forum.mflenses.com/ornano-chemical-products-t55525.html |
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Attila
Joined: 24 Feb 2007 Posts: 57840 Location: Hungary
Expire: 2021-11-18
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Posted: Thu Apr 26, 2012 7:36 pm Post subject: |
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Attila wrote:
Orio wrote: |
Thanks! I'll make sure not to drink them with roast |
_________________ -------------------------------
Items on sale on Ebay
Sony NEX-7 Carl Zeiss Planar 85mm f1.4, Minolta MD 35mm f1.8, Konica 135mm f2.5, Minolta MD 50mm f1.2, Minolta MD 250mm f5.6, Carl Zeiss Sonnar 180mm f2.8
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iangreenhalgh1
Joined: 18 Mar 2011 Posts: 15685
Expire: 2014-01-07
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Posted: Thu Apr 26, 2012 9:02 pm Post subject: |
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iangreenhalgh1 wrote:
Chemicals can expire, I tried using a 40 year old box of Ilford Hyfin developer that you make up from powder, it was all still sealed but didn't work at all.
The 20 year old box of Microphen I had did work however. _________________ I don't care who designed it, who made it or what country it comes from - I just enjoy using it! |
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David
Joined: 13 Apr 2011 Posts: 1869 Location: Denver, Colorado
Expire: 2013-01-25
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Posted: Fri Apr 27, 2012 5:26 am Post subject: |
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David wrote:
I have a bunch of Dektol, fixer, and D-76 that expired in the mid-1980s and it works just fine. Use as directed. One issue with the developers: If they are brown, they work well, but oxidize rapidly. The containers need to be cracked open every few days to replenish the air supply removed by the oxidation. This keeps them from collapsing and cracking. _________________ http://www.youtube.com/user/hancockDavidM |
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