ASTM D3928-00a

Standard Test Method for Evaluation of Gloss or Sheen Uniformity

SCOPE
1.1 This test method covers the determination of the uniformity of gloss or sheen of a paint applied by brush to a test panel simulating an interior wall section. Variations in gloss or sheen that may be caused by short wet edge time, poor leveling, and pigment orientation or flotation during and after application are evaluated visually.  
1.2 Because both the application and the panel evaluation are very subjective, this test method should be used only for comparative testing within one laboratory as the ratings assigned by different laboratories do not usually agree (see 8.1).  
1.3 The values given in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.4 This standard does not purport to address all of 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.

General Information

• Status: Historical
• Publication Date: 09-Jun-2000
• ICS: 87.040 - Paints and varnishes
• Technical Committee: D01 - Paint and Related Coatings, Materials, and Applications
• Drafting Committee: D01.42 - Architectural Coatings

Relations

• Replaced By: ASTM D3928-00a(2005) - Standard Test Method for Evaluation of Gloss or Sheen Uniformity
• Effective Date: 15-May-2005
• Referred By: ASTM D6577-15(2019) - Standard Guide for Testing Industrial Protective Coatings
• Effective Date: 10-Jun-2000
• Referred By: ASTM D5324-16(2022) - Standard Guide for Testing Water-Borne Architectural Coatings
• Effective Date: 10-Jun-2000
• Referred By: ASTM D5146-10(2019) - Standard Guide to Testing Solvent-Borne Architectural Coatings
• Effective Date: 10-Jun-2000
• Referred By: ASTM D6763-16(2022) - Standard Guide for Testing Exterior Wood Stains and Clear Water Repellents
• Effective Date: 10-Jun-2000
• Referred By: ASTM D3730-17(2022) - Standard Guide for Testing High-Performance Interior Architectural Wall Coatings
• Effective Date: 10-Jun-2000
• Referred By: ASTM E1808-96(2021) - Standard Guide for Designing and Conducting Visual Experiments
• Effective Date: 10-Jun-2000

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:D3928–00a
Standard Test Method for
1
Evaluation of Gloss or Sheen Uniformity
This standard is issued under the fixed designation D 3928; 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 3.3 Both buyers and sellers are interested in determining
whether a coating can be applied without exhibiting areas that
1.1 This test method covers the determination of the unifor-
differ in appearance because of laps and brush or roller marks,
mityofglossorsheenofapaintappliedbybrushtoatestpanel
and whether it can be readily touched up to provide a uniform
simulating an interior wall section. Variations in gloss or sheen
appearance in regard to gloss or sheen and all other aspects.
that may be caused by short wet edge time, poor leveling, and
pigmentorientationorflotationduringandafterapplicationare
4. Apparatus
evaluated visually.
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4.1 Paint Brush , 50 mm (2 in.) wide with polyester
1.2 Because both the application and the panel evaluation
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filaments70mm(2 ⁄4in.)long,chiseltip15mm( ⁄16in.)thick.
are very subjective, this test method should be used only for
Previously used brushes are preferred.
comparative testing within one laboratory as the ratings as-
4.2 Paint Brush, 25 mm (1 in.) wide with polyester fila-
signed by different laboratories do not usually agree (see 8.1).
1 7
ments 57 mm (2 ⁄4 in.) long, chisel tip 10 mm ( ⁄16 in. ) thick.
1.3 The values given in SI units are to be regarded as the
Previously used brushes are preferred.
standard. The values given in parentheses are for information
only.
5. Reagents and Materials
1.4 This standard does not purport to address all of the
5.1 Laminated Fiber Board, 610 by 300 mm (24 by 12 in. )
safety concerns, if any, associated with its use. It is the
with at least one smooth side.
responsibility of the user of this standard to establish appro-
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5.2 Latex-Base Primer.
priate safety and health practices and determine the applica-
5.3 Control Paint (optional)—Since there are no standard
bility of regulatory limitations prior to use.
panels, photographs, or paints for this test method, an agreed-
2. Summary of Test Method upon paint of known uniformity of appearance should be
included with the test paints as a control, unless the paints are
2.1 Paint is brush applied to a test panel using procedures
only ranked.
and conditions that are most likely to cause nonuniformity of
gloss or sheen. The dry film is then viewed under conditions
6. Procedure
that accentuate variations in gloss or sheen and the overall
6.1 Apply the latex primer by spray to the entire face of a
appearance is evaluated.
smooth side of the test panel so as to coat it uniformly at a
2 2
spreading rate of about 11 m /gal/L (450 ft ).
3. Significance and Use
6.2 Air dry at least 18 h under standard conditions of 23 6
3.1 When coatings are applied to large flat surfaces such as
2°C (73.5 6 3.5°F) and 50 6 5 % relative humidity and
walls, the film thickness may vary or there may be small areas
examine the panel for uniformity of primer application. If this
missed entirely (holidays) when the color of the fresh material
appears satisfactory, divide the coated area into sectionsAand
and the previous film are very similar. It is much less costly if
B as shown in Fig. 1.
these areas can be touched up instead of having to repaint the
6.3 Mount the panel vertically and position it as shown in
entire surface.
Fig. 1 with Section A to the right and Section B to the left of
3.2 Thickness is also affected in the locations where an area
the operator. Before painting, wet the brush with water if latex
coated a short time before is joined with the area currently
paints are to be tested or VM & Pnaphtha if the test paints are
being coated (laps). An application technique that may affect
the final appearance of the film is brushing or rolling the
material in different directions in adjacent areas.
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The sole source of supply of a polyester brush No. B-20CS, known to the
committee at this time is The Leneta Co., 15 Whitney Rd., Mahwah, NJ. If you are
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This test method is under the jursidiction of ASTM Committee D01 on Paint aware of alternative suppliers, please provide this information toASTM Headquar-
and Related Coatings, Materials, andApplications and is the direct responsibility of ters. Your comments will receive careful consideration at a meeting of the
1
Subcommittee D01.42 on Architectural Coatings. responsible technical committee, which you may attend.
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Current edition approved June 10, 2000. Published August 2000. Originally Similar to U.S. Federal Specification TT-P-650c Primer Coating Latex
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