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Thread: HYDROQUIONE

  1. #1
    Bruce Osgood's Avatar
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    I'm about to replenish my supply of Hydroquione purchased from Photographers Formulatry. To purchase it locally I can shop at Adorama but they list Photographers Formulary Hydroquione as Residual Hydroquione. I cannot find Residual Hydroquione at the Photographers Formulary site and wonder if I may be getting something I need to adjust my formulae for?

    What is the difference between Residual Hydroquione and Hydroquione?

    Are adjustments in usage necessary?

    Any idea which way? How much?

  2. #2
    Jorge Oliveira's Avatar
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    Honest, it's the first time I've heard about residual hydroquinone - in 33 yrs.

    Jorge O

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    Silverpixels5's Avatar
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    Its the first I've hear of it as well. Perhaps its a process term in the way its made. There may be a way that they process hydorquinone directly and another way in which it is a by-product of a different reaction, and thereby gets the term 'residual'. Just speculation though....
    RL Foley

  4. #4
    Bruce Osgood's Avatar
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    Well, I went into Adorama and searched Hi and Low for "Residual" Hydroquione and could only find Hydroquione.

    I had a printout of their web page showing "Residual" and the clerk said "I have no idea what residual hydroquione is. We only sell plain hydroquione."

    Okay, back to the real world.



 

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