Microphen-type replenisher

Discussion in 'Darkroom Developing and Printing' started by Lew, Apr 14, 2006.

  1. Lew

    Lew Guest

    Is there a published formula for a replenisher to match Formula #22,
    "Microphen-like" developer in the Darkroom Cookbook?
     
    Lew, Apr 14, 2006
    #1
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  2. The formula in Anchell is probably Ilford ID-68. The
    replenisher for it is Ilford ID-68R.

    Water (at 125F or 52C) 750.0 ml
    Sodium Sulfite, dessicated 85.0 grams
    Hydroquinone 8.0 grams
    Borax 7.0 grams
    Phenidone 0.22 grams
    Cold water to make 1.0 liter

    Add to the developer to keep up the volume.

    For those who might want the developer formula here it is:

    Ilford ID-68
    Water (at 125F or 52C) 750.0 ml
    Sodium Sulfite, dessicated 85.0 grams
    Hydroquinone 5.0 grams
    Borax 7.0 grams
    Boric Acid, crystaline 2.0 grams
    Potassium Bromide 1.0 gram
    Phenidone 0.13 grams
    Water to make 1.0 liter

    This is similar but not identical to Microphen. It is a
    Phenidone version of buffered D-76. ID-68 yields slightly
    higher speed and slightly coarser grain than D-76.
     
    Richard Knoppow, Apr 14, 2006
    #2
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  3. Lew

    Lew Guest

    Actually, Anchell gives ID-68, ID-68R, *and* #22 which is supposedly very
    similar to Microphen. The distinguishing characteristic between #22 and
    ID-68 seems to be amount of borax.

    Formula #22 from p.155:

    Water 750.0 ml
    Sodium sulfite 100.0 gms
    Hydroquinone 5.0 gms
    Borax, granular 3.0 gms
    Boric acid, granular 3.5 gms
    Potassium bromide 1.0 gms
    Phenidone 0.2 gms

    .... add water to make 1.0 l.
     
    Lew, Apr 15, 2006
    #3
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