ASTM D4303-99
Historical Standard: ASTM D4303-99 Standard Test Methods for Lightfastness of Pigments Used in Artists' Paints
SUPERSEDED (see Active link, below)
ASTM D4303
1. Scope
1.1 Three test methods consisting of exposure to light (natural sunlight or simulated sunlight) filtered through glass are described as follows:
1.1.1 Test Method A -Exposure under glass to the sun,
1.1.2 Test Method B -Exposure to irradiance from artificial daylight fluorescent lamps, and
1.1.3 Test Method C -Exposure in xenon-arc lightfastness apparatus.
1.2 These test methods are used to approximate the color change that can be expected over time in pigments used in artists' paints in normal indoor exposure.
Note 1-The color changes that result from accelerated exposure may not duplicate the results of normal indoor exposure in a home or gallery. The relative resistance to change, however, can be established so pigments can be assigned to categories of relative lightfastness.1.3 Lightfastness categories are established to which pigments are assigned based on the color difference between specimens before and after exposure.
1.4 Color difference units are calculated by the CIE 1976 L*a*b* color difference equation.
1.5 These test methods apply to artists' oil, resin-oil, acrylic emulsion, alkyd, and watercolor paints.
1.6 This standard does not purport to address the safety problems, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
ASTM Standards
D2244 Practice for Calculation of Color Tolerances and Color Differences from Instrumentally Measured Color Coordinates
D4302 Specification for Artists Oil, Resin-Oil, and Alkyd Paints
D4674 Practice for Accelerated Testing for Color Stability of Plastics Exposed to Indoor Office Environments
D5067 Specification for Artists Watercolor Paints
D5098 Specification for Artists Acrylic Dispersion Paints
D5724 Specification for Gouache Paints
D6901 Specification for Artists Colored Pencils
E284 Terminology of Appearance
E1347 Test Method for Color and Color-Difference Measurement by Tristimulus Colorimetry
E1348 Test Method for Transmittance and Color by Spectrophotometry Using Hemispherical Geometry
E1349 Test Method for Reflectance Factor and Color by Spectrophotometry Using Bidirectional (45:0 or 0:45) Geometry
G24 Practice for Conducting Exposures to Daylight Filtered Through Glass
G113 Terminology Relating to Natural and Artificial Weathering Tests of Nonmetallic Materials
G141 Guide for Addressing Variability in Exposure Testing of Nonmetallic Materials
G151 Practice for Exposing Nonmetallic Materials in Accelerated Test Devices that Use Laboratory Light Sources
G155 Practice for Operating Xenon Arc Light Apparatus for Exposure of Non-Metallic Materials
Keywords
art materials; colorants; lightfastness; lightfastness categories; relative humidity; test specimens; window glass filtered daylight exposure; xenon arc; Artists' materials/applications; Color--lightfastness; Exposure tests--light; Light exposure; Lightfastness; Pigments (general properties); Sunlight/monochromatic light exposure; Xenon-arc light exposure;
ICS Code
ICS Number Code 87.060.10 (Pigments and extenders)
DOI: 10.1520/D4303-99
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