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  1. #11
    Dan Henderson's Avatar
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    I have committed to scratch mixing as many chemicals as I logically can. As Kirk noted, selenium powder is reputed to be extremely dangerous to handle, so I will stick with premixed. Awhile back I costed out the bulk chemicals to make TF 3 (or maybe 4, can't remember now) vs. buying TF4 or 5, and unless I calculated wrongly, the savings were so minimal that I decided to stick with premixed. And I can't find a lith developer formula that works as reliably as premixed, but everything else is scratch made.


    web site: Dan Henderson, Photographer.com

    blog: https://danhendersonphotographer.wordpress.com/

    I am not anti-digital. I am pro-film.

  2. #12
    Bob Carnie's Avatar
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    What working dilution for working
    Quote Originally Posted by pcyco View Post
    hallo

    i mix one (kodak f-8, i think)
    works very well
    not because its cheap etc. for me it´s fun.
    --
    thomas

    edit:
    360 grams of sodiumthiosulfate
    50 grams of ammonium chlorid
    per liter

  3. #13
    pcyco's Avatar
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    hallo

    recommended is no dilution
    but film clears in the stocksolution within appr. 30 sec.

    i´m sur it works also with 1+1 or 1+3
    http://www.photokb.com/Uwe/Forum.asp...F8-Rapid-fixer

    --
    thomas
    --------------------------------------------------
    vfdkv (259)

  4. #14
    RPC
    RPC is online now

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    Quote Originally Posted by bdial View Post
    Here is another, older discussion on using C-41 fix, with some dilution recommendations; http://www.apug.org/forums/archive/i...p/t-22113.html
    In that thread, PE states that it is alkaline...
    The pH range he gives in his post indicates it is acidic. It is the post he is quoting that says it is alkaline.

    RPC

  5. #15
    Mike Wilde's Avatar
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    I have had quotes from Nymoc (John, I think was his name) in the past.

    I found that Claire, the Formulary,and Artcraft had him beat on price by quite a margin when I was stocking up on dry chems for the mix from scratch stocks 3-4 years ago.

    Now I am getting around to restock on things I am running low on. Some of them the Formulary can't ship internationally. Post 9/11 this is due mainly to the ability to use them for more nefarous purposes than just in a darkroom.

    So I may be visiting McGee St in the future.
    my real name, imagine that.

  6. #16
    Bob Carnie's Avatar
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    Mike
    If you want we can tag up on an order, I am thinking about September.
    I do know John and he is great, so is his son, and they do give great prices on bulk.
    I am thinking of these chems, and any Canadians wanting to jump on this give me an email.
    BW developer scratch
    Glacial Acid
    Fix scratch
    Hypo Clear Scratch
    Carbon material Scratch
    Sepia toner scratch
    Gum printing scratch

    basically the gamut, we will be placing an order and could bulk it up if those of you are serious of stocking up a bit.

    Quote Originally Posted by Mike Wilde View Post
    I have had quotes from Nymoc (John, I think was his name) in the past.

    I found that Claire, the Formulary,and Artcraft had him beat on price by quite a margin when I was stocking up on dry chems for the mix from scratch stocks 3-4 years ago.

    Now I am getting around to restock on things I am running low on. Some of them the Formulary can't ship internationally. Post 9/11 this is due mainly to the ability to use them for more nefarous purposes than just in a darkroom.

    So I may be visiting McGee St in the future.

  7. #17
    Bob Carnie's Avatar
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    double post

  8. #18

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    I am trained as a chemist. The only time I would consider making selenium toner would be when it was no longer available commercially.
    A rock pile ceases to be a rock pile the moment a single man contemplates it, bearing within him the image of a cathedral.

    ~Antoine de Saint-Exupery

  9. #19
    Bob Carnie's Avatar
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    I will take that to heart

    Quote Originally Posted by Gerald C Koch View Post
    I am trained as a chemist. The only time I would consider making selenium toner would be when it was no longer available commercially.

  10. #20
    Mike Wilde's Avatar
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    I have made up direct selenium toner in the past, with great care, under a fume hood (well, immediately adjacent to the exhaust intake to my HRV that draws at the end of my sink where the fixer tray usually sits) running full blast.

    Heating the mixture of the very finely divided Se powder and getting it into a sulfite solution, then heating it, all the whle in nitrile gloves, and wearing a full mouth and nose filtered respirator was a real pain in the ass.

    After that first effor I had a few different lots of of KRST come my way. It will be quite a while before I consider mixing selenium from scratch again.
    my real name, imagine that.

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