warm tone developer comprising of hydroquinone and sodium hydroxide

Discussion in 'B&W: Film, Paper, Chemistry' started by el wacho, Aug 27, 2011.

  1. el wacho

    el wacho Member

    Messages:
    443
    Joined:
    May 12, 2007
    Location:
    central anat
    Shooter:
    Medium Format
    hi all,

    i vaguely remember reading this formula somewhere, perhaps in an agfa book - it was 12gr hydroquinone/litre as the sole developing agent, sodium hydroxide and preservative (perhaps some bromide). if anyone could furnish the complete formula i'll be very grateful.
     
  2. Mike Wilde

    Mike Wilde Member

    Messages:
    2,936
    Joined:
    Aug 10, 2006
    Location:
    Misissauaga
    Shooter:
    Multi Format
    This is usually a lithographic style high contrast film developer. The bromide was quite high as well.

    I use a Kodak variant of the similar formula, called D-85 when I want no grays whan processing graphic arts type lithographic film. There are also two parters that keep the hydroxide as a separate solution.

    I normally steer clear of hydroxide solutions when they are in trays. Too easy to get an alkili burn this way, let alone the risk of pulling the emulsion right off the print.