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  1. #41

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    Quote Originally Posted by MattKing View Post
    I bought some Cibachrome tubes that have stains that are permanent. I'd be willing to bet that Greg Davis' tubes were used for Cibachrome/Ilfochrome.

    The stains don't seem to affect RC prints.
    Yup, that's my guess also since I had stain just like that in my old Ciba drum and never could get it out. Like I said in my post above, I just bite my lip and use it the way it was. JohnW

  2. #42
    MattKing's Avatar
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    I nearly forgot to upload a photo of my "filthy" Cibachrome drums. Here it is:
    Attached Thumbnails Attached Thumbnails ciba tube-stained.jpg  
    Matt

    “Photography is a complex and fluid medium, and its many factors are not applied in simple sequence. Rather, the process may be likened to the art of the juggler in keeping many balls in the air at one time!”

    Ansel Adams, from the introduction to The Negative - The New Ansel Adams Photography Series / Book 2

  3. #43
    Greg Davis's Avatar
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    That's what it looks like. I checked my other drums and it appears that only two have this stuff in it, and they are both from the same purchase. I'm still going to try the tray cleaner formulas, and if they don't remove it, then I know it won't bother my prints in RA-4.
    www.gregorytdavis.com

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  4. #44
    Greg Davis's Avatar
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    Kodak TC-1 and TC-3 tray cleaner formulas did not remove the stains. If anyone knows of a solution or cleaner that removes ciba/ilfochrome residue from drums, please chime in.
    www.gregorytdavis.com

    Did millions of people suddenly disappear? This may have an answer.

    "No one knows that day or hour, not even the angels in heaven, nor the Son, but only the Father." -Matthew 24:36

  5. #45
    MattKing's Avatar
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    Greg:

    1) As I understand it, some of the Cibachrome/Ilfochrome chemistry is caustic and powerful;
    2) I've considered it possible that the discolouration in my tube(s) is not residue, but rather evidence of abrasion to the surface - i.e. there is nothing there to contaminate prints, but rather the surface just isn't smooth.

    Can you scrape any of the apparent residue off with a fingernail?
    Matt

    “Photography is a complex and fluid medium, and its many factors are not applied in simple sequence. Rather, the process may be likened to the art of the juggler in keeping many balls in the air at one time!”

    Ansel Adams, from the introduction to The Negative - The New Ansel Adams Photography Series / Book 2

  6. #46

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    Gregory, I bought some drums a while back and they looked exactly like yours. I tried to clean them with a few things, even using a rough pad, but they remained the same. I would guess that what we are seeing is oxidized plastic or something similar. I plan to just use them as is. If your prints aren't affected, just leave them alone.

  7. #47
    Photo Engineer's Avatar
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    If all else fails, maybe the drums have been partly destroyed by the chemistry.

    Ciba / Ilfochrome chemistry is not caustic, but rather it is exceptionally acidic which may be etching the drums.

    PE

  8. #48
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    Don't know if it will work on Ilfochrome stains but I used this for C-41 stains on a roller transport processor I bought and it worked well. It's potent smelling stuff. Use nitrile gloves and use it outdoors if you can.

    http://www.climaxdigital.com/hydra_blitz.htm

  9. #49
    MattKing's Avatar
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    Quote Originally Posted by Photo Engineer View Post
    If all else fails, maybe the drums have been partly destroyed by the chemistry.

    Ciba / Ilfochrome chemistry is not caustic, but rather it is exceptionally acidic which may be etching the drums.

    PE
    I should no better. When I used the word "caustic" I was really thinking "strong and potentially harmful".

    Of course, it really means alkaline, strong and potentially harmful, and PE is correct that it certainly isn't alkaline.
    Matt

    “Photography is a complex and fluid medium, and its many factors are not applied in simple sequence. Rather, the process may be likened to the art of the juggler in keeping many balls in the air at one time!”

    Ansel Adams, from the introduction to The Negative - The New Ansel Adams Photography Series / Book 2

  10. #50
    bvy
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    Since it's relevant, I'll bump this thread. I have a Unicolor drum here with a dull yellow/gray/white residue lining the inside walls. It easily scrapes off clean with a fingernail. Any ideas what this can be?

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