Switch to English Language Passer en langue française Omschakelen naar Nederlandse Taal Wechseln Sie zu deutschen Sprache Passa alla lingua italiana
Members: 68,649   Posts: 1,481,288   Online: 742
      
Results 1 to 2 of 2
  1. #1
    Sean's Avatar
    Join Date
    Aug 2002
    Location
    New Zealand
    Shooter
    Multi Format
    Posts
    8,517
    Blog Entries
    7
    Images
    15

    Clearing/hardening solution for Type 665 negatives

    There is a non-official formula for clearing and hardening T-665 film. It is a combination clearing/hardening solution for Type 665 negatives that does not require the clearing bucket. It was published in an article in Popular Photography, November, 1976, and reported in Adams' book. This formula clears and hardens at the same time, and allows the photographer to carry around a smaller container of solution in the field and not worry as much about the negatives.

    Ingredient
    Amount (Metric)
    Amount (English)

    Potassium alum
    30 gm
    1 oz.

    Sodium sulfate (not sulfite)
    90 gm
    3 oz.

    Water
    1 L
    1 qt.


    Note that this formula uses sodium sulfate not sulfite. This formula can be used on Type 55 negatives if the 3 oz. of sodium sulfate are replaced with 60gm (2 oz.) of sodium bisulfite, but supposedly this solution has an "obnoxious odor."

  2. #2

    Join Date
    May 2009
    Shooter
    Medium Format
    Posts
    39
    Just as an aside, now that Polaroid has axed all of their films, "gram" should be labeled just "g" to avoid confusing with the similar "grain", which used to be abreviated with a similar "gn." all the time. To avoid confusion, one is "g" and the other is "gr."

    I see gram labeled "gr." all the time though too, so, ick, what a mess.

    As for quarts, as there is a liquid & dry U.S. version, and an Imperial one, it is best to label these U.S. or Imperial.

    Don't even go there with teaspoons, tablespoons, or coffeespoons! ;-)



 

APUG PARTNERS EQUALLY FUNDING OUR COMMUNITY:



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