Results 1 to 6 of 6

Thread: using fixer multiple times on 8x10, how?

  1. #1
    3d Visual Effects artist
    Join Date
    Jul 2007
    Location
    Culver City, CA
    Posts
    1,176

    using fixer multiple times on 8x10, how?

    My standard way to mix my fixer (TF-4) is to mix up the ammount that I needed for my 4x5 processing, which is 1200ml that would be re-use multiple times (in batches of 6 negatives each time).

    Now that I'm throwing rotary processing 8x10 into the mix, it only calls for around 300ml of solution with the way I'm processing them. What would be the best way to re-use my solution for both formats when I'm only using a part of my entire mixture for the 8x10 developing? Would I use the 300ml for 8x10, then mix it back into the remaining 900ml, and mark off a single sheet of 8x10 of usage? And then go back and use the entire (some of it partially used) 1200ml when it comes time to develop a batch of 4x5 sheets?

    My guess is that this will be ok, since the more depleted fixer will be mixed back into the less depleted, it'll even out just as if I used the entire batch of fixer on a single 8x10 sheet. Is this correct? Or is this not wise?
    Daniel Buck - 3d VFX artist
    3d work: DanielBuck.net
    photography: 404Photography.net - BuckshotsBlog.com

  2. #2
    ic-racer's Avatar
    Join Date
    Feb 2007
    Posts
    5,285

    Re: using fixer multiple times on 8x10, how?

    Don't know what the right answer for you would be, however, I now do all my rotary as one-shot. I few years ago I was printing some negatives from the 80s. Back then, as a poor graduate student, I re-used fixer. Some rolls from the 80s now demonstrate severe degradation of the image. My processing records from the 80s kept track of how many rolls went through each gallon of fixer, and I was under the recommended limit (though, I suspect my storage times were way beyond any recommended limit). The rolls processed with the oldest fixer show the most severe degredation. So, in my case it took 20 years for improper fixing to become evident.

  3. #3
    matthew blais's Avatar
    Join Date
    Oct 2003
    Location
    Riverside, CA
    Posts
    739

    Re: using fixer multiple times on 8x10, how?

    Dump the 300 ml into a container and use 100ml of that (or whatever) with some fresh each time.

    But, overall I use fresh for each batch. Small price to pay for longevity.
    "I invent nothing, I rediscover"
    August Rodin

    My Now old Photo Site

  4. #4

    Join Date
    Feb 2005
    Posts
    2,952

    Re: using fixer multiple times on 8x10, how?

    I process in a Jobo using TF-4, mixed fresh from the concentrate, as you do. I mix 500 ml at a time and put all 500 ml in. When first mixed I do a clearing test (measure the time required, with constant gentle agitation, for a tiny piece of unexposed film to clear). I periodically run a clearing test, when the clearing time has doubled I dump the fixer, and mix another 500 ml.

  5. #5
    3d Visual Effects artist
    Join Date
    Jul 2007
    Location
    Culver City, CA
    Posts
    1,176

    Re: using fixer multiple times on 8x10, how?

    Quote Originally Posted by matthew blais View Post
    Dump the 300 ml into a container and use 100ml of that (or whatever) with some fresh each time.

    But, overall I use fresh for each batch. Small price to pay for longevity.
    I'm starting to wonder, if I can get my 4x5 tank to work on my roller, I'll be able to use much less solution for the 4x5 tank (I'm inverting now, so it needs alot of solution). Then I could use fresh 300ml for each batch (each batch would give me 4 uses of fresh 300ml) which would put me close to the limit for 1200ml of initial solution. Formulary suggested no more than about 20 4x5 sheets per liter, but I try to keep it no more than either 16 4x5s (a few batches) or 4 8x10s, or a combo of the two.
    Daniel Buck - 3d VFX artist
    3d work: DanielBuck.net
    photography: 404Photography.net - BuckshotsBlog.com

  6. #6

    Join Date
    Sep 2003
    Posts
    1,791

    Re: using fixer multiple times on 8x10, how?

    Aren't you doing two bath fixing? Safer and actually cheaper.

Similar Threads

  1. differences betwen 4x5 5x7 and 8x10 when you shoot
    By luis prado in forum Darkroom: Film, Processing & Printing
    Replies: 16
    Last Post: 12-Jun-2008, 11:52
  2. 8X10 w/WP Back OR WP Camera only?
    By audioexcels in forum Cameras & Camera Accessories
    Replies: 0
    Last Post: 8-Nov-2007, 03:44
  3. Advice needed. 4x5 vs 8x10. Should I upgrade
    By Craig Griffiths in forum Cameras & Camera Accessories
    Replies: 19
    Last Post: 18-Nov-2006, 06:06
  4. Best 8x10 scanner and Labs for 8x10 Color Enlargements
    By Robert_4191 in forum Cameras & Camera Accessories
    Replies: 11
    Last Post: 21-Jul-2004, 08:27
  5. Pushing HP5+ in 8x10
    By David R Munson in forum Darkroom: Film, Processing & Printing
    Replies: 5
    Last Post: 24-Mar-2002, 13:30

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
  •