Erythrosine Emulsion

Discussion in 'Silver Gelatin Based Emulsion Making & Coating' started by wildbillbugman, Apr 8, 2009.

  1. wildbillbugman

    wildbillbugman Member

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    Hi Ron,
    I was wondering: If I make a batch of the erythrosine orthochromatic emulsion from the class handouts, would the adition of a red sensitizing dye after washing create a panchromatic dye? That is something I have not tried yet. So far, I have been adding both green and red sensitizing dyes after washing. But I recall that erythrosine must be present durring percipitation to work.
    Thanks,
    Bill
     
  2. Photo Engineer

    Photo Engineer Subscriber

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    Bill;

    It might. IDK. The problem with Erythrosine is that it is not used in the most classic manner being added after the emulsion is made. Erythrosine, as I teach in class, is added before the emulsion is made. So, I cannot predict what might result. The other dyes that we discussed here on APUG would be better choices.

    PE