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  1. #1

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    Contrast control & Crane paper

    Greeting,

    Since I'm unable to ship Potassium Chlorate or Dichromate for pt/pd process, Is there an alternative chemical that I can use that do not fall under Hazmat? I hesitate to buy sol. no. 2 due to it's short shelf life and frequent shipping expanse.

    For anyone who purchase paper directly from crane.com, could you kindly let me know if Crane's Choice Wove 8.5 x 11 90lb. Cover Sheets is the correct range of paper for pt/pd? I'm looking at #25044 Crane's Choice Pearl White Wove from that range.

    Response appreciated!

  2. #2

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    I think Crane's Choice Wove 8.5 x 11 90lb. Cover Sheets isn't the correct range as the description says 25% cotton. Thanks again!

  3. #3

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    Quote Originally Posted by eggshell
    Greeting,

    Since I'm unable to ship Potassium Chlorate or Dichromate for pt/pd process, Is there an alternative chemical that I can use that do not fall under Hazmat? I hesitate to buy sol. no. 2 due to it's short shelf life and frequent shipping expanse.

    For anyone who purchase paper directly from crane.com, could you kindly let me know if Crane's Choice Wove 8.5 x 11 90lb. Cover Sheets is the correct range of paper for pt/pd? I'm looking at #25044 Crane's Choice Pearl White Wove from that range.

    Response appreciated!
    YOu can use hydrogen peroxide in the developer for contrast control. I think some people also use it in the emulsion but I am not sure.

    OTOH I dont know why you cant ship Potassium Chlorate, I got some from B&S. As long as you keep it under certain amount it is not a hazardous material. I think 10 gr is not Haz. 10 Gr should be enough to make you a lot of the evil #2.

  4. #4
    Mateo's Avatar
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    I would consider trying the sol #2 anyways. You do realize that you can buy it as a drypack, add water on your end and away you go.
    "If I only had a brain"-Some badly dressed guy made of straw in some movie I think I saw

  5. #5
    clay's Avatar
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    If you are doing pure palladium, consider using the Na2 contrast control method. It will cool the image tone down a little, but it is very flexible and does not go bad on you. It also does not cause any graining or floculation when trying to really increase the print contrast.

  6. #6

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    Thanks jorge, meteo. I would certainly try to get a small amount Potassium Chlorate from B&S. They indicated "No international shipping" for the mentioned chemicals, but as meteo says, they have drypack (which I'm confused about initially) so I think my problem is solved.

    Clay, I'm going to ask the stupid question. What is Na2? Unless I missed it, I couldn't find it in "The New Platinum Print" book.

    Thanks to everyone for the help.

  7. #7

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    It's a new idea on contrast control - sodium chloroplatinate - not mentioned in the book due to publishing date. Probably the simplest method - you just use it with palladium solution and ferric Oxalate no.1 . As Clay suggests, you cannot get very warm tones with it, but it last for a very long time and does not cause any issues even when you are requiring a huge contrast boost. I think Dick Arentz' website has a little info on it.

  8. #8

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    Thanks Donsta, sounds cool to me. I'll check it out. Appreciate it!

  9. #9

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    Quote Originally Posted by Donsta
    It's a new idea on contrast control - sodium chloroplatinate - not mentioned in the book due to publishing date. Probably the simplest method - you just use it with palladium solution and ferric Oxalate no.1 . As Clay suggests, you cannot get very warm tones with it, but it last for a very long time and does not cause any issues even when you are requiring a huge contrast boost. I think Dick Arentz' website has a little info on it.
    You can find the information in the 2nd editioin of Dick's book. There is also a chart for contrast control for negatives of different DR on his web site.

    Sandy

  10. #10

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    Thanks Sandy, I am investigating Dick Arentz's website as we speak. Appreciate the response.



 

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