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Go Back   APUG > APUG English Forums > Darkroom > B&W: Film, Paper, Chemistry > Pink or Magenta Cast with T-max, new Tri-X, and other films (not blue or green cast)

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Old 07-04-2005, 11:47 AM   #121 (permalink)
 
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Refix and treat in HCA or 2% sodium sulphite solution for 10 minutes and rewash. Usually HCA is helpful in eliminating the punk coloroation but it is very important that the film be completely fixed. If the film is completely fixed a bit of pinkness would not significantly impair negative printing characteristics.
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Old 07-04-2005, 01:46 PM   #122 (permalink)
 
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You can clear the pink tint by rewashing in Herco's "Perma-Wash". Rapid fixer or TF-4 both do a better job of removing the pink. I agree with NOT mixing film types in a batch, T-Max needs more fixing than other films, you would over-fix the other film.
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Old 07-04-2005, 01:55 PM   #123 (permalink)
 
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I did that dance too - and gave up. The best I could do is minimize it - I found that Ilford Rapidfix for about 8-9 (1:4) minutes and a VERY thorough washing gave me best results.

Of course then I still had Tmax negatives...
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Old 07-04-2005, 02:09 PM   #124 (permalink)
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sodium sulfite is very effective also


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Old 07-04-2005, 02:15 PM   #125 (permalink)
 
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I always find that T-max benefits from longer fixing time than advised. I tend to at least double it, though you might find the colour goes a bit when the film is properly dry.

David.
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Old 07-04-2005, 02:17 PM   #126 (permalink)
 
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Odd - I found the tinge to be stronger when dry... Now I'm wondering what in the world else I managed to screw up
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Old 07-05-2005, 02:29 AM   #127 (permalink)
 
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You definitely need more fix time. David.
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Old 07-05-2005, 03:43 AM   #128 (permalink)
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I've had pink films from buffered developers and near-neutral fixer, but not from high pH developers (like Neofin) and alkaline fix. An afterbath in HCA might help in decolorising the pink dye. More fixing doesn't necessarily help, it looks to me to be more of a pH issue.
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Old 07-05-2005, 07:21 AM   #129 (permalink)
 
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There is a very simple way to eliminate teh pink cast often left behind in TMax negatives. Kodak's technical publication F4016 deals with this problem in the "Final Steps" section. It works. It's simple. What more could you want?

Excerpt from the tech pub:

"Fix at 65 to 75°F (18 to 24°C) for 3 to 5 minutes with vigorous agitation in KODAK Rapid Fixer. Be sure to agitate the film frequently during fixing.

Note: To keep fixing times as short as possible, we strongly recommend using KODAK Rapid Fixer. If you use another fixer, such as KODAK Fixer or KODAFIX Solution, fix for 5 to 10 minutes or twice the time it takes for the film to clear. You can check the film for clearing after 3 minutes in KODAK Rapid Fixer or 5 minutes in KODAK Fixer or KODAFIX Solution.

Important: Your fixer will be exhausted more rapidly with these films than with other films. If your negatives show a magenta (pink) stain after fixing, your fixer may be near exhaustion, or you may not have used a long enough time. If the stain is slight, it will not affect image stability, negative contrast, or printing times. You can remove a slight pink stain with KODAK Hypo Clearing Agent. However, if the stain is pronounced and irregular over the film surface, refix the film in fresh fixer.

Wash for 20 to 30 minutes in running water at 65 to 75°F (18 to 24°C) with a flow rate that provides at least one complete change of water in 5 minutes. You can wash long rolls on the processing reel. To save time and conserve water, use KODAK Hypo Clearing Agent."


Find the complete tech pub here:

http://www.kodak.com/global/en/profe...alt-max100film
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Old 07-05-2005, 10:29 AM   #130 (permalink)
 
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TMAX 400 TMY requires a lot of fixing (compared with non-tabular grained films). Some fixers have trouble removing the residual dye from this film. I recently tested a fixer that was quite successful in removing the TMAX 400 dye. The freshly mixed fixer had a measured pH of about 7 which slowly decreased (over several weeks of use) to a pH of about 6.

http://www.apug.org/forums/forum37/15333-initial-evaluation-fine-art-photo-supply-tabular-grain-fixer.html
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