Ilford Ilfotec DD-X shelf life

Discussion in 'B&W: Film, Paper, Chemistry' started by Alessandro Serrao, Mar 1, 2005.

  1. Alessandro Serrao

    Alessandro Serrao Member

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    I was wondering if there's anyone who has experiences of how long can the shelf life of Ilford Ilfotec DD-X concentrate be, stored in a glass jar (250ml) filled to the top and air-displaced with buthane/propane. I'm asking this 'cause I've stored mine more than 6 months this way and there isn't any change in color whatsoever! Can I trust the color of the solution?
     
  2. titrisol

    titrisol Member

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    Mine is about that age in the plastic bottle, not full to the brim and it works fine.

    When in doubt prepare the working solution and drop an epxosed leader, check that it turns black in about 1/5 of the time you expect to develop and off you go
     
  3. FrankB

    FrankB Member

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    Excellent tip, titrisol!

    I've been wondering how to check whether a liquid film dev is still ok before immersing my masterpieces (ROTFL!) in it. With paper dev you can always throw it out, mix up fresh and do it again, but if you louse up film then that's your lot!

    On Delta 100 I've moved over to Rodinal which sort of eliminates the problem for a few decades(!), but Delta 400 I still soup in DD-X so this advice will be very useful!

    Many thanks.

    Frank
     
  4. rbarker

    rbarker Member

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    I've had a opened, partially used bottles of DD-X concentrate last for 6 months to a year without problems.

    Frank - as to the long life of Rodinal, I might limit the number of decades a bit. I recently came across several bottles of Rodinal (glass bottles with the rubber stoppers intended for hypodermic piercing) that I had purchased back in the late '60s. All were bad. (sniff, sniff, sob) :wink:
     
  5. BarrieB

    BarrieB Member

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    OT I use Kodak D 76 all the time :
    I mix up the 5 litre batch and I fill up 25 Brown Glass cough mixture bottles which have plastic screw-on lids (and plastic seals inside the lids ) till the developer overflows. I date the bottles with paper labels , the remainder of the batch is stored also in larger brown glass bottles.
    I get over twelve months out of my developer; Each year I discard what is left and mix up another 5 litres. I ALWAYS use one + one and dump.
    ** I am sure this method will work with all developers, You MUST keep all the air out. ... Cheers Barrie
     
  6. FrankB

    FrankB Member

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    Fair enough, Ralph. However, as I bought mine last year, I think I should be okay for a while yet! :wink: