Results 1 to 6 of 6

Thread: Pyrocat HD part B adding dry chemistry to distilled water + part A

  1. #1

    Pyrocat HD part B adding dry chemistry to distilled water + part A

    To make 1liter of Pyrocat HD working developer.
    I want to start with 800ml of distilled water and then add 10ml part A.
    Then add sodium carbonate
    Then top up to 1liter
    How much sodium carbonate (anhy) or (mono) or crystal should I add?

  2. #2

    Join Date
    Oct 2003
    Location
    St. Simons Island, Georgia
    Posts
    654

    Re: Pyrocat HD part B adding dry chemistry to distilled water + part A

    7.5G assuming you’re using 1:1:100 dilution.

  3. #3
    David Schaller
    Join Date
    Mar 2002
    Location
    Williamstown, MA
    Posts
    755

    Re: Pyrocat HD part B adding dry chemistry to distilled water + part A

    I mix up Part A and Part B in distilled water, and keep them in separate bottles. Then I add 10ml of each to a liter of tap water when I develop film. The Part B will last forever mixed.

  4. #4

    Re: Pyrocat HD part B adding dry chemistry to distilled water + part A

    Quote Originally Posted by j.e.simmons View Post
    7.5G assuming you’re using 1:1:100 dilution.
    Thank you for the reply, just to be clear 7.5g anhydrous sod. Carbonate ?

  5. #5

    Join Date
    Oct 2003
    Location
    St. Simons Island, Georgia
    Posts
    654

    Re: Pyrocat HD part B adding dry chemistry to distilled water + part A

    I use Arm & Hammer Washing Soda from the grocery store. A poster on the old Azo Forum called the company and learned it is mono hydrate. I don’t think in this application it makes much difference so long as you are consistent. You’ll adjust your developing times as you get used to the developer.

    People say the B solution doesn’t go bad, but I’ve seen it happen a couple of times. Mixing the dry chemical avoids this, and it can also help avoid contaminating the A solution.

  6. #6

    Re: Pyrocat HD part B adding dry chemistry to distilled water + part A

    Found this post
    https://www.largeformatphotography.i...-HD-Solution-B
    7.5g or 10g sod. Carbonate per ltr or 7.5g pot. Carbonate per litre?

Similar Threads

  1. Pyrocat-HD Part A precipitate
    By Hedd-wyn in forum Darkroom: Film, Processing & Printing
    Replies: 4
    Last Post: 22-Sep-2020, 16:36
  2. Pur water filtration instead of Distilled water?
    By Dhuiting in forum Darkroom: Film, Processing & Printing
    Replies: 26
    Last Post: 17-Sep-2020, 15:07

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •