Home>Conservation> Watercolors > The Science Behind QoR

The Science Behind QoR

6 thoughts on “The Science Behind QoR”

  1. I am planning to buy some QOR watercolors but would like to know if they are lightfast and permanent. I have been painting with Golden Heavy and Fluid paints for over 35 years and think they are the best. I need a new ‘adventure’ and think watercolors would be a challenge but I always thought that that medium was not fadeproof and archival. Could QOR be what I’m looking for? Marie LyonI

    I do not have a website.

    • Hello Marie,

      Thank you for supporting our acrylic products for such a long time. Actually, the majority of our QoR colors have an ASTM Lightfastenss of I (excellent) and just a handful have a II (very good), thus these colors are just as lightfast as our acrylic colors. In same cases our QoR tube label don’t list an ASTM rating for the specific pigments used. This happens either when there is no official ASTM rating for the pigment yet, or when our own lightfastness testing performed differently/better than the ASTM rating for the same type of pigment. You will find more information on the topic in these two articles:

      QoR Lightfastness Testing Update: https://justpaint.org/qor-lightfastness-testing-update/
      QoR® Watercolor Questions: Labeling and Lightfastness Ratings: https://justpaint.org/qor-watercolor-questions-labeling-and-lightfastness-ratings/


Leave a Comment