Agfa Viradon

Discussion in 'Darkroom Developing and Printing' started by polly filler, Jun 15, 2011.

  1. polly filler

    polly filler Guest

    Hi All
    Just bought some Agfa Viradon,, and on the instructions it says to dilute1
    to 50 for usage.
    Then it says After toning wash thoroughly Na sulphite 10%, prevents
    posttoning.
    Could someone please explain the "Na sulphite10%" as I do not understand.
    Also what is the best way to use this toner to get the best results? I have
    never used it before.

    Many thanks in advance
     
    polly filler, Jun 15, 2011
    #1
    1. Advertisements

  2. Am 15.06.2011 18:33, schrieb polly filler:
    This is easy. After toning you will wash your prints with lots of water.
    The photo may have some posttoning effect while washing e.g. will get
    little bit more brown/yellow/dark.
    However, just give it a try.

    1. Have a nice photo. Developed, fixed, washed.
    2. Throw it in, check visual. If it is toned the way you like (maybe 8 -
    12 min) then
    3. take it out.
    4. wash it with plenty of water.
    5. That's it. If it's ok for you - congratulations.

    However, you might want to stop toning and prevent posttoning right away
    for some special reason. In this case you put the photo out of the toner
    bath (step 3) and then into Na Sulphite 10% (point 3.1).

    I think you won't need Na sulphite.

    HTH
    Andreas

    --

    Fotos unter http://www.gugau-foto.de/
    Blog unter http://exkommuniziert.blogspot.com/
    Big Picture http://www.fineart-schwarzweiss.de/
    Whisky unter http://whisky-guide.de/
     
    Andreas Gugau, Jun 15, 2011
    #2
    1. Advertisements

  3. Current Agfa Viradon is a polysulfide toner similar to
    Kodak Brown Toner. Polysulfide has the odd property of
    toning faster as it becomes diluted or exhauseted. That
    makes it tend to tone quickly when washed until a
    substantial amount of the toner is washed out. In addition
    it can cause staining if not washed out quickly. Sodium
    sulfite acts as a sort of stop bath, stopping the toning
    immediately and also clears the yellow stain from the toner.
    While its usually recommended that a 10% soluton be used I
    find a working solution (about 2%) of Kodak Hypo Clearing
    Agent works fine. Polysulfide also has the property of
    toning all densities equally so it will provide considerable
    protection to images when only partial toning is used.
    Kodak published formula T-8 is a similar toner but not so
    concentrated.
     
    Richard Knoppow, Jun 16, 2011
    #3
  4. polly filler

    Dennis Boone Guest

    Dennis Boone, Jun 18, 2011
    #4
  5. polly filler

    polly filler Guest

    polly filler, Jun 20, 2011
    #5
    1. Advertisements

Ask a Question

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.