Help with Parodinal concentrate

Discussion in 'B&W: Film, Paper, Chemistry' started by RobertoMiglioli, Jun 13, 2013.

  1. RobertoMiglioli

    RobertoMiglioli Member

    Messages:
    69
    Joined:
    Aug 24, 2011
    Location:
    São Paulo, B
    Shooter:
    Medium Format
    Hellos Guys and Girls. It´s been a few days since I made Parodinal and now I need some help. I want to develop up to 10 films at same time on a Jobo tank and I´m not sure what concentration should I use. I don´t want it to be exausted before the films be complete developed. So my thoughts are:

    5 ml of Parodinal for each 120 film ==> 10 films ==> 50 ml of Parodinal.

    2 liters to cover half of the reels ==> concentration 1:40.

    What are your thougths? Does it worth a try?
     
  2. RobertoMiglioli

    RobertoMiglioli Member

    Messages:
    69
    Joined:
    Aug 24, 2011
    Location:
    São Paulo, B
    Shooter:
    Medium Format
    Anyone?... Please?
     
  3. el wacho

    el wacho Member

    Messages:
    443
    Joined:
    May 12, 2007
    Location:
    central anat
    Shooter:
    Medium Format
    i have used parodinal at 1:50 for 16 minutes 20C. one full minute of slow inversions then 3 inversions at 4, 8, and 12 minute mark. i was photographing in snow so the concentration was good for getting good highlights and very close to box speed. i have experienced that parodinal is prone to fogging as time increases so i tend to keep times under 20 min. i'm developing for diffusion. hope this helps.
     
  4. Steve Smith

    Steve Smith Subscriber

    Messages:
    9,079
    Joined:
    May 3, 2006
    Location:
    Ryde, Isle o
    Shooter:
    Medium Format
    I think that would be o.k. People use it (and actual Rodinal) at much lower concentrations.


    Steve.
     
  5. RobertoMiglioli

    RobertoMiglioli Member

    Messages:
    69
    Joined:
    Aug 24, 2011
    Location:
    São Paulo, B
    Shooter:
    Medium Format
    Thank you, guys. Helped a lot.

    Anyone have experience developing 10 films all together?
     
  6. el wacho

    el wacho Member

    Messages:
    443
    Joined:
    May 12, 2007
    Location:
    central anat
    Shooter:
    Medium Format
    i wouldn't do 10 rolls together with a developer i barely knew. do the first roll and adjust your times from there. seriously.
     
  7. RobertoMiglioli

    RobertoMiglioli Member

    Messages:
    69
    Joined:
    Aug 24, 2011
    Location:
    São Paulo, B
    Shooter:
    Medium Format
    Thanks. Some friends told me the same.