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  1. #11
    Rudeofus's Avatar
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    Quote Originally Posted by Photo Engineer View Post
    It is a tricky process for the individual that can cause an explosion if not done correctly.
    Not only that, but SO2 is both very smelly and highly toxic and therefore generally not a gas you want around you, unless you are properly equipped and trained for it.
    Trying to be the best of whatever I am, even if what I am is no good.

  2. #12

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    Heck - nothin' to SO2. They work with it all the time at the Chevron refinery across town, and it has
    only blown up once this summer, and doubled our gasoline price only for a couple of months. Things
    are almost back to normal now.

  3. #13
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    Well, I forgot to add that they also bubble HBr gas into TEA to make the Bromide adduct to supply the pH balance and the Bromide ion as antifoggant.

    PE

  4. #14

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    TEA=triethanolamine?

  5. #15
    Photo Engineer's Avatar
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    Yes.

  6. #16
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    I think I will just continue to buy mine from Kodak. Maybe if I buy a bottle a month for the next year or two I'll have a large enough supply for my personal use.

    And probably a large enough supply to qualify as a large quantity generator for the EPA.

  7. #17
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    HC 110 Reverse Engineering

    I think Champion will continue with HC-110 no matter what happens with Kodak . If it does go away I imagine we will have much bigger problems to worry about.

  8. #18
    Photo Engineer's Avatar
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    I use D76.

  9. #19
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    Quote Originally Posted by DREW WILEY View Post
    This has already been done. Over on the Dye Transfer forum there's a fellow in Australia named Andy
    Cross who precisely reverse engineered it, but he has access to true research lab facilities. It's a highly difficult product to duplicate, involving hazardous precursors. You can't do it in a home lab. Apparently Kodak no longer offers liquid developers in Australia due to hazmat shipping issues, so he
    made himself a lifetime supply in a single batch. The concentrate allegedly keeps for decades. HC110
    is still readily available here, so I don't know why anyone would even bother attempting to duplicate
    it here, though I notice Freestyle claims to have an actual substitute.
    iirc Kodak Australia doesn't import it, but we have no problem on having it shipped from the U.S. and receiving it. B&H has no problem sending it over.

  10. #20
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    I loved HC-110 with Tri-X before they reformulated Tri-X and the developing times for dilution B are now too short for roll film on a reel. I have always found the grain structure and shadow density produced by the TX/HC110B combo to be much more to my liking than D-76. Rodinol has wonderful qualities, but for me HC-110 was it.

    Another thing about shelf life, I had someone give me bottles of very old HC-110. He said it worked fine. I saw a big difference in base fog, highlight separation, and D-Max areas when I processes a test roll (AKA a roll my wife shot). So it's shelf life is not infinite. Now that I got my old M2 repaired and fitted with a nice Summicron M lens, I'm playing with Tri-X in Rodinol, and T-Max 400 in HC-110B. Neither will be like the TX in HC-110. Sad face here.

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