Moersch Catechol

Discussion in 'B&W: Film, Paper, Chemistry' started by Gary Holliday, Jan 11, 2008.

  1. Gary Holliday

    Gary Holliday Member

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    I'm using this as a single developer with great results at 1+7 and 10ml of finisher blue. Image came out nicely at around 3.5 minutes for a particular negative last night.

    How long is the tray life of this paper developer?

    I don't know whether it is oxidisation or developer temperature which has significally changed the development times this afternoon?

    Any thoughts?
     
  2. ath

    ath Member

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    from the HP of Wolfgang Moersch:

    Haltbarkeit Konzentrat 2-3 Jahre, nach Anbruch in Abhängigkeit von der Füllhöhe ca. 1 Jahr
    Keeping properties unopened bottle: 2-3 years, after opening depending on amount left ca. 1 year

    Haltbarkeit der Arbeitslösung 1-2 Monate
    Keeping properties working solution: 1-2 months

    Kapazität pro Liter Konzentrat ca. 200 Blatt 24x30cm
    capacity per liter concentrate: ca. 200 sh 24x30cm.
     
  3. Gary Holliday

    Gary Holliday Member

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    1-2 months thanks. That's a long time! The problem must be the temperature if it is not affected by oxidisation.

    Cheers.
     
  4. hka

    hka Member

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    I think that the keeping properties mentioned of 1-2 months are based on closed bottles and not in the open air...