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  1. #21
    RalphLambrecht's Avatar
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    Quote Originally Posted by MVNelson View Post
    any comments on on ILford's archival fixing recommendation ... basically highly conc. fix for very short times ?
    That's the preferred technique. The logic is sound, fix as short as possible, and that's what I use and recommend for two-bath fixing. I fix paper in film-strength fixer.
    Regards

    Ralph W. Lambrecht
    www.darkroomagic.comrorrlambrec@ymail.com[/URL]
    www.waybeyondmonochrome.com

  2. #22
    Ian Grant's Avatar
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    The reason for the short fix times is so that the partially soluble Silver Thiosulphate complexes formed during fixing have little or no time to diffuse into the Fibre base where the can form weak bonds with the cellulose. This is the why staining from poor fixing is often in the paper, even on the rear not just in the emulsion.

    Ian

  3. #23
    MVNelson's Avatar
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    It's what I have been doing all along. I still do a longish wash after Permawash bath. I use T4 for film but for paper I use Hypam .

    Miles
    Miles :
    cherish light

  4. #24
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    Quote Originally Posted by RalphLambrecht View Post
    A little hint:
    Don't discard your old fixer after a printing session. Discard it in the middle of the session, after test strips and work prints are done. This way you get fresh fixer for the final prints.
    Sounds like good advice to me.
    www.thephotoshop.ie
    www.monochromemeath.com

    "you get your mouth off of my finger" Les McLean

  5. #25

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    Quote Originally Posted by RalphLambrecht View Post
    That's the preferred technique. The logic is sound, fix as short as possible, and that's what I use and recommend for two-bath fixing. I fix paper in film-strength fixer.
    I found this product on the net
    Arista Premium Odorless Liquid Fixer
    http://www.freestylephoto.biz/6200-A...2.5?cat_id=303

    It can fix FB papers within one minute. Should be perfect then!

  6. #26
    RalphLambrecht's Avatar
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    Quote Originally Posted by wiggywag View Post
    I found this product on the net
    Arista Premium Odorless Liquid Fixer
    http://www.freestylephoto.biz/6200-A...2.5?cat_id=303

    It can fix FB papers within one minute. Should be perfect then!
    That's pretty much standard for any ammonium thiosulfate (rapid) fixer at film strength, but don't split this time in half for two-bath fixing. 30s agitation is not enough to guarantee uniform fixing.
    Regards

    Ralph W. Lambrecht
    www.darkroomagic.comrorrlambrec@ymail.com[/URL]
    www.waybeyondmonochrome.com

  7. #27

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    History!

    Quote Originally Posted by MVNelson View Post
    Any comments on on ILford's archival fixing recommendation
    ... basically highly conc. fix for very short times?
    Ilford's Archival Processing Sequence debuted in 1981.
    Ilford has for several years disassociated the Sequence
    from the word Archival. In fact their 2002 PDF on fixers
    does not even mention the sequence; the post film
    strength 1 minute fix followed by a 5-10-5 minute
    wash-hca-wash. They do still list a fix time for
    film strength. ??????

    To put it bluntly, the 1 minute fix at film strength is no
    longer to be associated with archival. The sequence
    itself is no longer.

    Ilford's guide line for greatest Life Expectancy is the
    level of dissolved silver in the fixer. They've pegged
    it at 0.5 grams silver per liter. That works out to be
    10, 8x10s through 1 liter of working strength be it
    1:4, 1:9, or if you can believe the chemistry
    capacity statments, 1:19.

    Ilford's reasons for dropping the sequence are, I believe
    multiple. One reason repeatedly mentioned; some papers
    simply will not fix completely in 1 minute. Also, doubts
    were raised of the 10 minutes in hca replacing
    a second fix. Essentially the quick fix in film
    strength was never any more than the
    quickest way to a clean print.

    If Ilford promotes any fix routine it is the two bath
    which they describe as "... extremely efficient ...".
    Hey! They want us to turn out clean prints
    and save on chemistry. Dan

  8. #28

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    How important is double bath fixing? If you are selling prints it would seem your clients should reasonably expect your print to last multiple decades without significant deterioration if displayed or stored under reasonable conditions. Two bath fixing should be part of your process. Then again, if you are printing for your own enjoyment do you really care if a print lasts 30, 50 or 100 years? How long are you going display a print before you decide a change is due? How much trouble would it be to reprint an image after, say 15 years? If you are printing for the joy of it, as I do, I vote for single bath fixing taking care not to over use the fix followed by a sensible washing routine.

  9. #29

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    Quote Originally Posted by RalphLambrecht View Post
    That's pretty much standard for any ammonium thiosulfate (rapid) fixer at film strength, but don't split this time in half for two-bath fixing. 30s agitation is not enough to guarantee uniform fixing.
    What would you recommend as minimum time for agitation to guarantee uniform fixing with a two bath approach?

  10. #30
    polyglot's Avatar
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    Quote Originally Posted by wiggywag View Post
    What would you recommend as minimum time for agitation to guarantee uniform fixing with a two bath approach?
    I found 2x45s (constant agitation) to work well with Kentmere FB and Ilford Rapid Fixer at 1+4. After fixing and washing, I left paper developer on a blank area (lights on) and got no marking at all of the paper surface, indicating that no silver salts remained.

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