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Thread: D-23 stock shelf life

  1. #1

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    D-23 stock shelf life

    Hi all.
    Anybody out there knows once mixed how long D-23 developer will stay OK on the shelf ?
    TIA

  2. #2

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    Re: D-23 stock shelf life

    Quote Originally Posted by Iga View Post
    Hi all.
    Anybody out there knows once mixed how long D-23 developer will stay OK on the shelf ?
    TIA
    Why would you want to store D-23 when it's so easy to mix, as needed?

  3. #3

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    Re: D-23 stock shelf life

    Quote Originally Posted by Alan9940 View Post
    Why would you want to store D-23 when it's so easy to mix, as needed?
    Thanks.

  4. #4

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    Re: D-23 stock shelf life

    Quote Originally Posted by Iga View Post
    Hi all.
    Anybody out there knows once mixed how long D-23 developer will stay OK on the shelf ?
    TIA
    In my experience, it’s good for about two - maybe 3 - months in a FULL, tightly sealed bottle.

  5. #5

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    Re: D-23 stock shelf life

    Quote Originally Posted by paulbarden View Post
    In my experience, it’s good for about two - maybe 3 - months in a FULL, tightly sealed bottle.
    Thank you Paul ! That's what I was asking for.
    Best wishes.

  6. #6

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    Re: D-23 stock shelf life

    I've gone 7 months in a full, glass bottle. It was fine.

  7. #7

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    Re: D-23 stock shelf life

    3-6 months in a full bottle.

    Quote Originally Posted by Iga View Post
    Hi all.
    Anybody out there knows once mixed how long D-23 developer will stay OK on the shelf ?
    TIA

  8. #8

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    Re: D-23 stock shelf life

    Thanks to all, folks !
    It's really great to get help in minutes !

  9. #9

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    Re: D-23 stock shelf life

    Just FYI for everyone, my source is Kodak tech pub J-1 (p. 24).

    Quote Originally Posted by Iga View Post
    Thanks to all, folks !
    It's really great to get help in minutes !

  10. #10

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    Re: D-23 stock shelf life

    And for what it's worth, my Kodak Publication J-1, 6th edition, 1963, first 1965 printing gives the following "Keeping properties without use":

    Full stoppered bottle: 6 months
    Half-full stoppered bottle: 2 months
    Tray: 24 hours
    Gallon tank: 1 month
    This is for storage at 65-70 F, higher storage temperatures will give shorter life. And "The figures given in this table are estimates based on experience and are intended for use only as a guide."

    This is on page 30 of my edition of Kodak Professional Data Book J-1, Processing Chemicals and Formulas for Black-and-White Photography

    BTW Michael R., thank you for citing your source, guessing we have different editions as our page numbers differ.

    David

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