I forgot developer mixing order...

Discussion in 'B&W: Film, Paper, Chemistry' started by Ray Rogers, May 5, 2009.

  1. Ray Rogers

    Ray Rogers Member

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    What are the general rules when mixing up formulas?

    I know somethings have to go in at a certain time but I forgot what goes when and the never befores.
     
    Last edited by a moderator: May 5, 2009
  2. Photo Engineer

    Photo Engineer Subscriber

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    Ray, use the order in the printed formula for best results. Kodak gives them in their respective addition order in all cases.

    Some people prefer to put a pinch of Sulfite into the developer before adding the Metol (or HQ or both).

    PE
     
  3. jgjbowen

    jgjbowen Member

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    ingredient #1 is H2O.....after that you are on your own. Sorry Ray, I just couldn't help myself :smile:
     
  4. Ray Rogers

    Ray Rogers Member

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    I want to carry a special developer into the field, in powder form;
    I figure I can't get by just mixing EVERYTHING together...
    but I thought some good neighbor combinations might be permissible.

    IIRC, some known problems are, uh, well known.

    Something affects the solubility of something else....

    OK, Well - I may have to pre-pkg. ea. component seperately,
    but I was looking for a get out of jail card.
    :sad:

    Ray
     
  5. Ray Rogers

    Ray Rogers Member

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    It's OK.
    At least you didn't say something like:
    "7:33 is a very good time to mix YOUR developers."
    :D
     
  6. Photo Engineer

    Photo Engineer Subscriber

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    Ray;

    You didn't say what exactly you wanted to do.

    Package the developing agents in one small packet and everything else in another packet. When ready to go, add the alkali and then the developer packets to very warm water, about 40 deg C. This will work with most developers.

    PE
     
  7. dancqu

    dancqu Member

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    My guess, the developer will be mixed directly to
    working strength. At that dilution all together may
    dissolve easily enough. Test before field use. The
    less to be dissolved the better your chances. Dan
     
  8. Ray Rogers

    Ray Rogers Member

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    Interesting.
    Actually, I will prepare a stock, the working solution is however quite dilute... much more than a typical developer... infact, to mix working strength, I think I would need to be able to weigh out sub mg quantities...

    This I cannot do.