Two Kodak products

Discussion in 'Kodak' started by piterengel, Jan 12, 2008.

  1. piterengel

    piterengel Guest

    Hi, a friend of mine who is no more printing in darkroom gave me some
    cans of kodak D-11 developer and Kodak Unifix fixer. Here are the
    questions:

    - does D-11 really give a very high contrast with paper? I do not
    intend to use it for portraits, but for some more abstract subject. I
    thought eventually to use a less contrasted paper, i.e. contrast index
    3 instead o f 4. Can be a good idea?

    - the cans of D-11 have an amount of powder to prepare 5 liters of
    solution. Have I to diluite futher it?

    - the same for Unifix cans: powder is for 1 liter, have I to diluite?

    Thanks all.
    P.
     
    piterengel, Jan 12, 2008
    #1
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  2. Kodak D-11 is a high contrast developer but not a
    lithographic developer. It will yeild high contrast on many
    films and was intended for making line positives and similar
    work. For maximum contrast use it at full strength, to
    reduce contrast dilute it 1:1. It will probably give you
    high contrast with paper but you will have to experiment.
    The developer must be fairly recent to come in a
    5-liter size. As long as the powders are white the developer
    is OK. If its dark yellow or brown just dump it, its
    oxidized and not even worth mixing to test.
    Since this is relatively short lived developer it will
    probably last longest if stored in separate one liter
    bottles which can be completely filled and sealed until they
    are needed.
    For comparison to other developers here is the formula for
    D-11.

    Kodak D-11 Process Developer
    Water (at 125F or 52C) 500.0 ml
    Metol 1.0 gram
    Sodium sulfite, desiccated 75.0 grams
    Hydroquinone 9.0 grams
    Sodium carbonate, desiccated 25.0 grams
    Potassium bromide 5.0 grams
    Water to make 1.0 liter
    If sodium carbonate, monohydrated is used the amount
    to be used is 30.0 grams

    Note: In nearly all formulas containing Metol the
    sulfite is mixed before the Metol to prevent its being
    oxidized. I have checked three sources for this formula and
    all, including two Kodak formula booklets, give the
    ingredient list as above.


    I have no information about Unifix.
     
    Richard Knoppow, Jan 13, 2008
    #2
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