Old Tmax in XTol or D76

Discussion in 'B&W: Film, Paper, Chemistry' started by jd callow, Jun 24, 2005.

  1. jd callow

    jd callow Moderator Staff Member Moderator

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    Good day,

    I want to try out a JOBO I sold prior to shipping. I was thinking of using some TMX 120 for the test. The only dev I have are Xtol and D76.

    The film is past date and the old version, but should be fine. Any recommendations for which dev, dilution and time?

    This is not critical, but I thought it would be nice to get a leg up.

    jdc
     
  2. Keith Tapscott.

    Keith Tapscott. Member

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    If you have already sold the Jobo and it is working properly, then it probably doesn`t really matter which developer you try. I like D-76 diluted 1+1 and despite the recommendations of a 15% reduction of the small tank times, I find that the small tank times work best for me. Of course, these are starting points and you simply adjust them according to the contrast that the times yield. If they`re too contrasty for you, then reduce in 30 second or 1 minute increments until you reach the desired contrast, if too flat, then increase in the same time increments. It may be a good idea to bracket the exposures 1 stop either side of the meter reading in half f/stop increments to ensure an optimum exposed negative too, to help with the meter calibration.
    Jobo recommend a 5 minute pre-rinse although personally, I don`t use one.
    The Jobo is useful for developing several films exposed on the same day, for the odd roll or two, I develop in a Paterson tank with inversion agititation.
    I hope this is of some use to you.
     
  3. jd callow

    jd callow Moderator Staff Member Moderator

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    I sold the to jobo an appugger. JOBO USA is a 45min drive if anything is wrong I will be able to manage it better here then they will in Mexico. I ran it for a bout 1hour when i got it. As a matter of due diligence I want to run complete B&W film process and a mock colour before I ship it.

    It is 90+ degrees here. My cold tap water is a beautiful 64 degrees. The cpp2 has the capability to cool the water down for B&W. The conditions here should make for a good test.

    I am going to do a mock colour only because colour is a bit more messy and odiferous.

    Notes from prior exp would recommend
    an exposure of 64, bracket 1/2 stop up and down, soup in d76 1:3 for 17min at 68 degrees.

    The box recommends 12min for d76 1:1 @68 degrees and an exposure of iso 100.

    I am not the most adept at b&w so I appreciate any help given.
     
  4. Neal

    Neal Subscriber

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    Dear jdc,

    My old (April 200) Xtol data sheet has the following for TMX/120 developd using rotary tubes and exposed at EI100:

    Full strength, 68°, 7 minutes
    1:1 Dilution, 68°, 7-3/4 minutes

    Neal Wydra