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Formulas

Chemistry Formulas

  • Dev:

    • Tetenal eukobrom : 1+9 @ 20° (manual deals about 60 to 90 seconds as dev time)
    • Ilford PQ : 1+9 @ 20° (manual deals about 60 seconds as dev time)
  • Water

  • Fix: same as film.

  • Notes about quantities : 1 liter for format less than 24x30 is ok... 2 liter for 24x30 better

timesheet

Concentration or product type is not important here. If paper is well exposed, 2 minutes is ok.

Dev

  • 120 secondes or 30/45 secondes after image appear.

Stop

  • 10 to 15 secondes

Fix

  • 2 minutes or more (no more than 5 minutes !)

  • Can use 2 bath (divide time by 2, so 1 minute per bath):

    • first one will receive on the use papers from stop bath (so first bath will contain after the session some of the stop bath chemistry)
    • second one will stay more pure and we can add taner to it.

Water Bath

  • 15 minutes or more