Switch to English Language Passer en langue française Omschakelen naar Nederlandse Taal Wechseln Sie zu deutschen Sprache Passa alla lingua italiana
Members: 71,928   Posts: 1,585,178   Online: 765
      
Results 1 to 2 of 2
  1. #1

    Join Date
    Dec 2004
    Shooter
    Multi Format
    Posts
    1,670

    DuPont/Defender 56-D

    A rapid commercial paper developer.

    Distilled water (50°C) ................. 750 ml
    Metol .................................. 3.3 g
    Sodium sulfite (anhy) .................. 33.5 g
    Hydroquinone ........................... 10.0 g
    Sodium carbonate (mono) ................ 65.8 g
    Potassium bromide ...................... 3.3 g
    Distilled water to make ................ 1.0 l

    Usage

    For use dilute 1+2, develop for 1 to 2 minutes at 20°C.

  2. #2
    Sean's Avatar
    Join Date
    Aug 2002
    Location
    New Zealand
    Shooter
    Multi Format
    Posts
    8,594
    Blog Entries
    7
    Images
    15
    Comments from the previous article system:

    By titrisol - 07:19 PM, 05-01-2006 Edit Rating: None
    Thnaks Gerald!!!
    By Peter Schrager - 04:37 PM, 05-02-2006 Edit Rating: None
    Gerald-what is this recommended for? I have used and liked D55 very much. Thanks for posting
    By Gerald Koch - 05:37 PM, 05-02-2006 Edit Rating: None
    Someone asked for this formula. I have never used it but from the description assume it to be a general purpose paper developer. However, it is at least 50 years old and may not be useful for today's papers.
    By Raymond Copley - 02:25 PM, 05-30-2006 Edit Rating: None
    In the Cartier-Bresson classic "The Decisive Moment" published in 1952, there is a technical note that Magnum's standard paper develop was Defender 56 and preferred paper then was (and probably still is) Ilford Multigrade.



 

APUG PARTNERS EQUALLY FUNDING OUR COMMUNITY:



Contact Us  |  Support Us!  |  Advertise  |  Site Terms  |  Archive  —   Search  |  Mobile Device Access  |  RSS  |  Facebook  |  Linkedin