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  1. #81
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    You can make any emulsion panchromatic. It is not difficult, just expensive!

    PE

  2. #82
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    PE, do you ever hunt eBay or lab closeouts for cheap(er) dyes that might be suitable for sensitizing? If you were to make a comprehensive list of useful & practical sensitizers, about how long would it be??

    Shaz, I'd love to hear Mssr. Lumiere's method. What is Orthochrome T though? A dye?
    If you are the big tree, we are the small axe

  3. #83
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    Do you know where we can find "Orthochrome T" ?
    When I see the recipe , i find this very difficult.
    Can you tell us how you will do if someone ask you PE ?

    Shaz
    Last edited by shaz; 03-30-2011 at 12:38 PM. Click to view previous post history.

  4. #84
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    Yes Holmburgers...Orthochrome T is the dye for the panchromatic emulsion. Kodak produce this dye.... I've send a mail to Kodak, to ask them Orthochrome T, but they never answer me . One of the reason why it is impossible to make like the original .
    I forget the Lavedrine book where i work...tomorrow i will try to translate it

    Shaz

  5. #85
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    Again one thing...it's like the "vert solide nouveau 3B" called too "Bleu Flexo 810", made by BASF. If someone work with BASF on the forum, perhaps he will sale us a little bit .

    Shaz

  6. #86
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    Hello Umut,

    Have you buy Orthochrome T ?
    And have you buy "vert solide nouveau 3B" ?

    Shaz

  7. #87
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    Quote Originally Posted by holmburgers View Post
    PE, do you ever hunt eBay or lab closeouts for cheap(er) dyes that might be suitable for sensitizing? If you were to make a comprehensive list of useful & practical sensitizers, about how long would it be??

    Shaz, I'd love to hear Mssr. Lumiere's method. What is Orthochrome T though? A dye?
    The list is about 15 names long. Orthochrome T is probably not on it as it is NOT a very good sensitizing dye.

    It seems to me that I posted the list of available Kodak dyes here on APUG back a while ago, upon just such requests. I'll repost it here for you all. The top set is best and the bottom set is quite marginal but they work. They are a lot less expensive.

    PE
    Attached Thumbnails Attached Thumbnails sensitizing dyes.jpg  

  8. #88
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    Thanks PE, that's great, sorry to make you repost it.
    If you are the big tree, we are the small axe

  9. #89
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    I am sorry for you PE, but Orthochrome T is on the list. Perhaps you want a scan from the Lavédrine Book.
    In your list, i don't see the "vert solide nouveau 3B", it's in the list.
    If you don't use the same dyes like Louis Lumière then it will be a PEpanchromatic emulsion and not the Louis Lumière panchromatic emulsion. . And Louis Lumière was one of the best in his time for the panchromatic emulsion.

    Where can i see on the Eastman organic chemical website the page where you can buy Orthochrome T please ?
    I don't find it.

    Shaz
    Last edited by shaz; 03-30-2011 at 02:58 PM. Click to view previous post history.

  10. #90
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    Acridine Orange: 350139860138, 140304815302
    Congo Red: 230519851416
    Eosin Y: 230519851517
    Rhodamine: 280408148225

    So these are just a handful of "quick & dirty" eBay searches. Careful searching, and going through the "Business, Office & Industrial > Medical/ Lab Equipment > Lab Supplies > Chemicals" chain of categories will, over time, yield results. I guarantee it!

    I remember seeing a huge jar of congo red once. And the key with dyes is finding the colloquial name, or searching by title & description, or sometimes you might even have to go into the auction and look at a picture to identify it. Truth is, the sellers have no idea what they have or how to market it best.

    edit: Shaz is right, it is on the list
    Last edited by holmburgers; 03-30-2011 at 03:11 PM. Click to view previous post history.
    If you are the big tree, we are the small axe



 

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