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Need yellow dye for one step past traditional developing process.

My company develops its own photos for use in and for vision screening instruments that are sold all over the world. Once the process (using Ilford MGIV FB paper and Ilford chemicals) is complete, those photos that need yellow over white are dipped into auramine 130% yellow dye until they are the correct color and then rinsed one more time. This process has been used since the late 1940's.

The dye is very difficult to obtain and has, we are now told, some unfavorable qualities. I am looking for a safe, easy-to-purchase, quality dye to replace the old product, and one that will work well with the Ilford paper and chemicals. The dye must also have a long life without fading, just as the cartridge inks for most color printers have now.

Do you have any suggestions? Please!

Judy for Keystone View

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  • judy296 Nov 20, 2008

    Dye manufacturers have been contacted. I am looking for an alternative to the previously-used dye. I apologize if I did not make that clear in the original posting.

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Try here also:

http://www.tradekey.com/ks-auramine-o/

regards and good luck

Posted on Nov 20, 2008

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Http://www.freepatentsonline.com/4121932.html try this site

Posted on Nov 20, 2008

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Contacting a dye manufacture in your area or a regitered company of making dye and asking them to make a dye of exactly what type you required can be made.

Posted on Nov 20, 2008

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