1.1 This specification establishes requirements for composition, physical properties, performance, and labeling of artists’ watercolor paints.
1.2 This specification covers pigments, vehicles, and additives. Requirements are included for pigment identification, lightfastness, and consistency.
1.3 Table 1 lists some pigments meeting the lightfastness requirements in this specification. In order to identify other pigments that meet these requirements, instructions are given for test specimen preparation. Test methods for determining relative lightfastness are referenced.
1.4 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only.
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
ASTM D5067-16(2021) Referenced Document
ASTM D1210 Standard Test Method for Fineness of Dispersion of Pigment-Vehicle Systems by Hegman-Type Gage
ASTM D185 Standard Test Methods for Coarse Particles in Pigments, Pastes, and Paints
ASTM D4236 Standard Practice for Labeling Art Materials for Chronic Health Hazards
ASTM D4303 Standard Test Methods for Lightfastness of Pigments Used in Artists' Paints