Switch to English Language Passer en langue française Omschakelen naar Nederlandse Taal Wechseln Sie zu deutschen Sprache Passa alla lingua italiana
Members: 71,918   Posts: 1,584,733   Online: 817
      
Page 3 of 3 FirstFirst 123
Results 21 to 23 of 23

Thread: ordorless Stop

  1. #21

    Join Date
    Sep 2002
    Location
    Tijeras, NM
    Shooter
    Medium Format
    Posts
    1,246
    Concentraion of acid (for neutralization) is not that important, especially with a weak acid like citric acid. You can re-use your bath, so as OleTj mentioned you can use 15g per liter.
    If you don't feel like saving it, a 3 or 4 grams will do. This is at least enough to neutralize a dozen or so 8x10 negatives.
    art is about managing compromise

  2. #22

    Join Date
    Sep 2002
    Posts
    747
    Does the pH of the developer matter? I use D23 which isn't very alkaline. Others use developers which are much more so.

  3. #23

    Join Date
    Sep 2002
    Location
    Tijeras, NM
    Shooter
    Medium Format
    Posts
    1,246
    Actually PH doesn't really correlate to the amount of acid needed to neutralize different bases. Developers tend to have buffering agents in them as well which makes thing even more complicated.
    You can tell when the base on sheet film is properly neutralized, the sheet is slippery in the developer (bases always feel this way) and when you put it in the stop, the slipperyness rapidly dissapates. If this doesn't happen, you know that the stop is spent.
    art is about managing compromise

Page 3 of 3 FirstFirst 123


 

APUG PARTNERS EQUALLY FUNDING OUR COMMUNITY:



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