Switch to English Language Passer en langue française Omschakelen naar Nederlandse Taal Wechseln Sie zu deutschen Sprache Passa alla lingua italiana
Members: 71,528   Posts: 1,572,410   Online: 1150
      
Results 1 to 4 of 4
  1. #1
    dpurdy's Avatar
    Join Date
    Jun 2006
    Location
    Portland OR USA
    Shooter
    8x10 Format
    Posts
    2,064
    Images
    38

    Tween 20 Question

    I could probably just call Bostick and Sullivan and ask them but I will ask here first.
    I have used a little bit of tween 20 in the past at the 10% strength. It was very old and a hand me down from another photographer. It definitely helped make smoother prints but I had a problem with sparkles left on the surface of the paper that stayed even after washing and drying. I heated the bottle of tween up and gave it a good shaking and then I used hot developer for my platinum print and the sparkles went away.
    I have two questions now. I just ordered a 50% solution of tween from B&S and I know I will need to dilute it for using for 8x10 and smaller prints. Is there anything to worry about other than just using some distilled water?

    Also is the sparkles problem I had with the old stuff due to age or is it a problem inherent in Tween? Is there another way to avoid it?

    Thanks for the help
    Dennis Purdy

  2. #2

    Join Date
    Sep 2005
    Location
    Istanbul, Turkey
    Shooter
    Multi Format
    Posts
    652
    Dennis, not an answer to your question but just wanted to mention for the records; you can use Ilford's wetting agent Ilfotol too w/o any adverse effects. It's similar -> a non-ionic surfactant. I was using it 2-3 drops into 10ml coating solution - but that depends much on paper...

  3. #3
    dpurdy's Avatar
    Join Date
    Jun 2006
    Location
    Portland OR USA
    Shooter
    8x10 Format
    Posts
    2,064
    Images
    38
    Thank you Loris, I will look into that.
    Dennis

  4. #4
    michael9793's Avatar
    Join Date
    Feb 2003
    Location
    Fort Myers, Florida, USA
    Shooter
    ULarge Format
    Posts
    2,001
    Images
    111
    I use it almost on every paper. One to two drops on 8x10s and up to 4 drops on 8x20's or 14x12 prints. they say to be careful it will lower the DMax if you use to much. I don't measure my DMax's so I can't tell you.

    mike a
    "Capturing an image is only one step of the long chain of events to create a beautiful Photograph” See my updated website: mandersenphotography.com



 

APUG PARTNERS EQUALLY FUNDING OUR COMMUNITY:



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