ADOX 25 in Ro9

Discussion in 'B&W: Film, Paper, Chemistry' started by troutmask, Nov 4, 2006.

  1. troutmask

    troutmask Member

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    I have been using ADOX 25 5" x 4", exposing it as 25 ISO and processing it at 15 mins in Perceptol at 1:3;this has given good results.
    I have just brought some ADOX R09 (which is claimed to be like Rodinal), this is cheaper than Perceptol.
    ADOX reccomend under exposing the film by a stop (why they don't just rate it at 50 is beyond me) andthen R09 1 + 100 for between 36 - 42 minutes.
    i am processing 6 sheets at a time, in a tank designed for 12, which takes 1.4 lts to fill, so don't want to whaste to much chemistry.
    I would apreciate the views of any body who has used this film and processed it in R 09, partcuallrly about the times as 36 - 42 is quite a big margin!
     
  2. Petzi

    Petzi Member

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    R09 should give higher speed yield than Perceptol, so it makes sense to give the film a little less exposure.
     
  3. titrisol

    titrisol Member

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    Hi Peter!
    Welcome to APUG!
     
  4. Alan Johnson

    Alan Johnson Subscriber

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    I have not used this combination but would expect times close to Efke 25 (same film?) in Rodinal 1:100: www.digitaltruth.com/chart/menu.html
    Speed and times you give may be push processing?
     
  5. P C Headland

    P C Headland Subscriber

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    Given that you will be using quite dilute solutions, the time range is not that unreasonable.

    For Adox/Efke 25 roll or (9x12cm) sheet film I use Rodinal 1+100 and either 18 minutes with "reduced" agitation, or 1 hr stand. This is for when shot at EI25. When I accidentally shot a couple of sheets at 100, I developed it for 30 minutes using my reduced agitation scheme. Seemed to work fine.

    At 1+100, you are only using 14ml developer. You can also try 1+200 stand, for about 2 hours.

    (BTW, I seem to recall reading that R09 1+40 is equivalent to Rodinal 1+50)
     
  6. Petzi

    Petzi Member

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    If you want something fast, try "Rodinal Special".
     
  7. Gerald Koch

    Gerald Koch Member

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    I like the results with this developer using the more dilute solution recommended by Agfa. Times are longer and easier to use.