This specification establishes requirements for composition, performance, and labeling artists pastels. This specification includes requirements for identification and lightfastness. Pastel specimens are exposed to both natural daylight through window glass and simulated daylight window glass-filtered radiation to determine the lightfastness rating for each pastel.
No standard currently exists for pigments, chalk and a light binder that keep the sticks together to be used for drawing or painting on a sanded or other gritty substrate.
Pastel, pastels, chalk, substrate, pigment, shades, tints, sanded paper, colored sticks, soft pastels, hard pastels, conte crayon, color mixing, light fastness
The title and scope are in draft form and are under development within this ASTM Committee.
Citing ASTM Standards
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