This booklet of specifications establishes requirements for composition, physical properties, performance, and labeling of artists' oil paints and artists' acrylic emulsion paints. It covers pigments, vehicles, and additives. Requirements are included for pigment identification, lightfastness, consistency, drying time, and in the case of acrylic emulsion paints, freeze thaw stability. This specification references methods for determining the relative lightfastness of pigments in artists' oil and acrylic emulsion paints and includes a table listing some pigments meeting these lightfastness requirements.