ASTM D6901-03
(Specification)Standard Specification for Artists' Colored Pencils
Standard Specification for Artists' Colored Pencils
SCOPE
1.1 This specification establishes requirements for composition, performance, and labeling of artists' colored pencils.
1.2 This specification covers vehicles and additives. Requirements are included for identification, lightfastness, and consistency.
1.3 Colored pencil specimens are exposed to both natural daylight through window glass and simulated window glass-filtered daylight radiation to determine the lightfastness rating for each pencil.
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Standards Content (Sample)
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Designation: D 6901 – 03
Standard Specification for
1
Artists’ Colored Pencils
This standard is issued under the fixed designation D 6901; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope 3.2.1 colored pencil, n—a core of extenders, binders, pig-
ments and additives, such as wax/oil and thickeners surrounded
1.1 This specification establishes requirements for compo-
by a casing.
sition, performance, and labeling of artists’ colored pencils.
3.2.2 watercolor pencil, n— a colored pencil with a water-
1.2 This specification covers vehicles and additives. Re-
dispersible core.
quirements are included for identification, lightfastness, and
3.2.3 color stick, n—a core of extenders, binders, pigments
consistency.
and additives, such as wax/oil and thickeners without a casing
1.3 Colored pencil specimens are exposed to both natural
but sometimes with a paper sleeve.
daylight through window glass and simulated window glass-
3.2.4 water-soluble color stick, n—a water-dispersible color
filtered daylight radiation to determine the lightfastness rating
stick.
for each pencil.
3.2.5 bloom, n—hazy appearance that sometimes appears
2. Referenced Documents on the surface of applied colored pencil.
3.2.6 substrate, n—white, uncoated, neutral pH, buffered
2.1 ASTM Standards:
paper, or board, without optical brighteners, to which color is
D 1729 Practice for Visual Evaluation of Color Differences
2
applied.
of Opaque Materials
D 2244 Test Method for Calculation of Color Differences
4. Significance and Use
2
from Instrumentally Measured Color Coordinates
4.1 This specification establishes quality requirements and
D 4236 Practice for Labeling Art Materials for Chronic
3 provides a basis for common understanding among producers,
Health Hazards
distributors, and users.
D 4303 Test Methods for Lightfastness of Pigments Used in
3 4.2 It is not intended that all pencils meeting the require-
Artists’ Paints
ments be identical nor of uniform excellence in all respects.
D 5383 Practice for Visual Determination of the Lightfast-
3
Variations in manufacture, not covered by this specification,
ness of Art Materials by Art Technologists
2
may cause some artists to prefer one brand over another, either
E 284 Terminology of Appearance of Materials
of which may be acceptable under this specification.
G 24 Practice for Conducting Exposures to Daylight Fil-
4
4.3 Variation in test results can result from differences in
tered Through Glass
pigment manufacture from time to time in a company, different
G 113 Terminology Relating to Natural and Artificial
4
varieties of a pigment from company to company, different
Weathering Tests of Nonmetallic Materials
combinations of pigments and other ingredients, specimen
G 151 Practice for Exposing Nonmetallic Materials in Ac-
4 preparation, different instruments and instrumental readings,
celerated Test Devices that Use Laboratory Light Sources
variations in the surface of the specimen, and the conditions of
G 155 Practice for Operating Xenon Arc Light Apparatus
4 exposure. Allowance for these variations is made by establish-
for Exposure of Nonmetallic Materials
ing lightfastness categories that include a range of color
3. Terminology differences.
4.4 Since a specific colored pencil may be unusually sensi-
3.1 Definitions—Refer to Terminology E 284 for appear-
tive to some aspect of a particular method of accelerated
ance terms used in this specification.
lightfastness testing and show a change in color that would not
3.2 Definitions of Terms Specific to This Standard:
occur in a normal home or gallery environment, two types of
exposure are required.
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This specification is under the jurisdiction of ASTM Committee D01 on Paint
4.5 Some variation in test results is to be expected even
and Related Coatings and Materials and is the direct responsibility of Subcommittee
when the same type of exposure is repeated; therefore, after
D01.57 on Artist Paints and Related Materials.
triplicate specimens are exposed in the two types of exposure,
Current edition approved Oct. 1, 2003. Published October 2003.
2
Annual Book of ASTM Standards, Vol 06.01. outliers are discarded and, depending on how similar test
3
Annual Book of ASTM Standards, Vol 06.02.
4
Annual Book of ASTM Standards, Vol 14.04.
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D6901–03
results are, the mean is found of the two, or in some cases three tion given in Test Method D 2244, between the measurements
exposures, to deter
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