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Thread: Keeping times

  1. #1

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    Keeping times

    Can anyone give me an idea of the shelf life of citric acid, and EDTA/Sulphite mixes, used for clearing of prints in the Ziatype process?
    Many thanks
    John

  2. #2
    Jim Noel's Avatar
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    I don't worry about keeping times. It is so easy and cheap to mix these that I do so fresh each time I work. I never carry over either of these chemicals from one session to another. When using them for a class I sometimes mix up enough to last for a month, but we still do not re-use them.
    [FONT=Comic Sans MS]Films NOT Dead - Just getting fixed![/FONT]

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    ann
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    or you asking about dry chemicals?
    http://www.aclancyphotography.com

  4. #4

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    I was meaning when mixed with water. I ask because although I agree citric acid and sodium sulphite are cheap, the EDTA Disodium I bought here in the UK was not.



 

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