LIGHTFASTNESS RATING - HOW IT'S DONE

Recognizing that lightfastness is the single most important quality issue to colored pencil artists today, CPSA has been diligently working in conjuction with the ASTM (American Society for Testing Materials), colored pencil manufacturers, and art conservators towards the development of a standard of lightfastness for colored pencils. This is invaluable to our artists to help them choose the highest quality products. Ongoing lightfastness testing has been done by our Vice President of Consumer Standards and is currently continuing with our Product Research Director. These test results are made available to CPSA members, Patrons and Sponsors.

CPSA also recognized that pigment identification of colored pencils plays a vital role in lightfastness research. That is why we have been proactive in writing and attaining a grant, along with the ASTM, to conduct research using scientific methods to identify the pigments in colored pencils. We expect this will further the development of an ASTM standard of lightfastness for colored pencils. This pigment identification project and a lightfastness standard can only lead to the increased recognition of this fine art medium.

Colors as Rated by 5 independent Observers, using the Blue Wool Sample Rating at right

Blue Wool Samples
with Lightfastness Rating
(with 7+ being top rating,
0 being worst rating)
 

For more information on Lightfastness Testing, contact
CPSA Product Research Director
productresearch

CPSA HomeProduct ResearchSite Map