Ilford MGW Warmtone FB paper storage longevity ...

Discussion in 'Darkroom Developing and Printing' started by Lloyd Erlick, Feb 15, 2006.

  1. Lloyd Erlick

    Lloyd Erlick Guest

    February 15, 2006, from Lloyd Erlick,

    I've recently been putting my darkroom back
    into operation after a hiatus of a couple of
    years.

    I just made prints on some paper I bought
    before I moved my darkroom. I marked the box
    November, 2002. So the paper is likely just
    about four years old. (It's 16x20 sheets of
    glossy material. I had about a quarter of a
    box left, judging by the weight, maybe ten or
    fifteen sheets.)

    At first I thought the paper had died,
    because the first few prints were flat and
    had lifeless blacks. But once I found the
    correct exposure the prints were fine.
    Perfectly dense black, pristine white
    borders, a nice tonality in the skin tones.

    So, although I am surprised, I've found that
    MGW will last three or four years minimum in
    very ordinary storage (room temperature,
    indoors).

    I did not make any change in my usual
    developer, either (i.e., no added bromide).

    regards,
    --le
    ________________________________
    Lloyd Erlick Portraits, Toronto.
    voice: 416-686-0326
    email: po
    net: www.heylloyd.com
    ________________________________
    --
     
    Lloyd Erlick, Feb 15, 2006
    #1
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  2. Refrigerated I found that is good up to 6 years so far.
    Rather than use this pack up, I've decided to put it back in the fridge
    and test it again next year. I also found that Forte' vcfb lasts as
    long. Oriental's vcfb did not fair as well.
     
    theyankeesnapper, Feb 16, 2006
    #2
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  3. Lloyd Erlick

    Lloyd Erlick Guest


    February 16, 2006, from Lloyd Erlick,

    What a great idea! I'm doing the same with a
    batch of selenium toner I made up in 2002.
    As long as it's good, I'll keep it and keep
    track of it. Something tells me selenium
    toner will last longer than photosensitive
    paper!

    regards,
    --le
    ________________________________
    Lloyd Erlick Portraits, Toronto.
    voice: 416-686-0326
    email:
    net: www.heylloyd.com
    ________________________________
    --
     
    Lloyd Erlick, Feb 16, 2006
    #3
  4. Oriental G graded has all turned to grade 1 after ~5 years
    at room temperature.
     
    Nicholas O. Lindan, Feb 16, 2006
    #4
  5. KRST toner contains sodium/ammonium thiosulfate
    which degrades with contact with oxygen.

    KRST should slowly turn into plain-ole [non-rapid]
    selenium-sulfide toner. The sulfide toner should work
    but will be slower.

    Selenium will form compounds with organic chemicals, I don't
    know how much gelatin etc. comes off in the toner or if
    anything significant will happen.

    Given time and use KRST throws a sludge, so obviously something
    _is_ happening.

    There are some _real_ chemists in this newsgroup...would
    any like to comment.
     
    Nicholas O. Lindan, Feb 16, 2006
    #5
  6. Lloyd Erlick

    ellinger Guest

    My experience is that MGWT loses contrast in room temperature storage.
    (I often print for maximum contrast with a grade 5 filter.) This is
    backed up by a local photographer who is very exacting about process
    and has done extensive tests. He keeps MGWT in a freezer and removes
    only enough sheets for a single printing session.

    YMMV.

    Chris Ellinger
    Ann Arbor, MI
    USA
     
    ellinger, Feb 16, 2006
    #6
  7. Lloyd Erlick

    Lloyd Erlick Guest


    February 17, 2006, from Lloyd Erlick,

    In my case I probably would not notice. I use
    it for ten minutes diluted 1+5. I wouldn't
    throw it out ...

    regards,
    --le
    ________________________________
    Lloyd Erlick Portraits, Toronto.
    voice: 416-686-0326
    email:
    net: www.heylloyd.com
    ________________________________
    --
     
    Lloyd Erlick, Feb 17, 2006
    #7
  8. Lloyd Erlick

    Lloyd Erlick Guest

    On Thu, 16 Feb 2006 15:13:52 -0500,

    February 17, 2006, from Lloyd Erlick,

    This is very interesting. I didn't do any
    scientific observation. My paper could well
    have lost contrast. Actually, it seemed to me
    the numbers I had to enter on the light
    controller were higher contrast than I would
    have predicted from looking at the negative.
    But all that is moot, since the paper
    performs. I won't be storing quantities of
    it, though.

    regards,
    --le
    ________________________________
    Lloyd Erlick Portraits, Toronto.
    voice: 416-686-0326
    email:
    net: www.heylloyd.com
    ________________________________
    --
     
    Lloyd Erlick, Feb 17, 2006
    #8
  9. Lloyd Erlick

    John Guest

    Started as Grade 2, right ?

    ==
    John - Photographer & Webmaster
    www.puresilver.org - www.xs750.net
     
    John, Feb 18, 2006
    #9
  10. Lloyd Erlick

    Lloyd Erlick Guest


    March 6, 2006, from Lloyd Erlick,

    Indeed it does throw a sludge! And I have
    found this sludge very mych reduced after
    removing any acid in my process. I'd love to
    hear comments from a real chemist...

    regards,
    --le
    ________________________________
    Lloyd Erlick Portraits, Toronto.
    voice: 416-686-0326
    email:
    net: www.heylloyd.com
    ________________________________
    --
     
    Lloyd Erlick, Mar 6, 2006
    #10
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