ASTM D3719-00

Standard Test Method for Quantifying Dirt Collection on Coated Exterior Panels (Withdrawn 2009)

SIGNIFICANCE AND USE
Change in color or appearance of coated exterior surfaces due to such factors as dirt collection or retention is undesirable. If Test Method D 3274 or other test methods are used to establish that dirt collection is the primary cause of such a change, this test method can be used to quantify the degree of dirt collection or, more properly, the degree of change in visual appearance of the coated surface due to dirt collection.
When used in this manner and with color change, exposure duration and environment specified, this test method can provide a performance specification with respect to dirt collection.
This test is only useful as a comparative test.
SCOPE
1.1 This test method covers an instrumental procedure for quantifying the degree of dirt collection on exposed exterior coated panels.
1.2 This test method is limited to those coated exterior panels with lightness values before exposure significantly greater than those after exposure.
1.3 The instrumental readings do not distinguish between mildew growth and other forms of dirt.
1.4 This test method measures total dirt collection. Loose dirt may be washed and removed from specimens if only imbedded dirt collection is to be measured.
1.5 This standard does not purport to address all of the safety concerns, 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.
WITHDRAWN RATIONALE
This test method covers an instrumental procedure for quantifying the degree of dirt collection on exposed exterior coated panels.
Formerly under the jurisdiction of Committee D01 on Paint and Related Coatings, Materials, and Applications, this test method was withdrawn in March 2009 in accordance with section 10.5.3.1 of the Regulations Governing ASTM Technical Committees, which requires that standards shall be updated by the end of the eighth year since the last approval date.

General Information

• Status: Withdrawn
• Publication Date: 09-Nov-2000
• Withdrawal Date: 08-Mar-2009
• ICS: 87.040 - Paints and varnishes
• Technical Committee: D01 - Paint and Related Coatings, Materials, and Applications
• Drafting Committee: D01.52 - Factory Coated Wood Products

Relations

• Replaces: ASTM D3719-95 - Standard Test Method for Quantifying Dirt Collection on Coated Exterior Panels
• Effective Date: 10-Nov-2000
• Referred By: ASTM D5324-16(2022) - Standard Guide for Testing Water-Borne Architectural Coatings
• Effective Date: 10-Nov-2000
• Referred By: ASTM D6763-16(2022) - Standard Guide for Testing Exterior Wood Stains and Clear Water Repellents
• Effective Date: 10-Nov-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:D3719 –00
Standard Test Method for
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Quantifying Dirt Collection on Coated Exterior Panels
This standard is issued under the fixed designation D 3719; 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 4. Summary of Test Method
1.1 This test method covers an instrumental procedure for 4.1 Lightness readings using a color difference meter are
quantifying the degree of dirt collection on exposed exterior made before and after exposure, and the difference is consid-
coated panels. ered to be due to dirt collection.
1.2 This test method is limited to those coated exterior
5. Significance and Use
panels with lightness values before exposure significantly
5.1 Change in color or appearance of coated exterior sur-
greater than those after exposure.
1.3 The instrumental readings do not distinguish between faces due to such factors as dirt collection or retention is
undesirable. If Test Method D 3274 or other test methods are
mildew growth and other forms of dirt.
1.4 This test method measures total dirt collection. Loose used to establish that dirt collection is the primary cause of
such a change, this test method can be used to quantify the
dirt may be washed and removed from specimens if only
imbedded dirt collection is to be measured. degree of dirt collection or, more properly, the degree of
change in visual appearance of the coated surface due to dirt
1.5 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the collection.
5.2 When used in this manner and with color change,
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica- exposure duration and environment specified, this test method
can provide a performance specification with respect to dirt
bility of regulatory limitations prior to use.
collection.
2. Referenced Documents
5.3 This test is only useful as a comparative test.
2.1 ASTM Standards:
6. Apparatus and Materials
D 823 Practices for Producing Films of Uniform Thickness
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of Paint, Varnish, and Related Products on Test Panels 6.1 Color Determination Instrument, complying with Test
Method D 2244.
D 2244 Test Method for Calculation of Color Differences
2
from Instrumentally Measured Color Coordinates 6.2 Test Panels, of any convenient size and of substrate
suitable for exterior use.
D 3274 Test Method for Evaluating Degree of Surface
Disfigurement of Paint Films by Microbial (Fungal or
2 7. Preparation of Test Panels
Algal) Growth or Soil and Dirt Accumulation
7.1 Apply the material under test to the test panels in
3. Terminology
accordance with Practices D 823, or as agreed upon between
the purchaser and the seller. Allow the final coat of air drying
3.1 Definitions:
3.1.1 dirt collection, n—the collection of foreign matter that systems to cure for 7 days before exposure.
darkens the surface of exterior exposed coated panels.
8. Procedure
8.1 Operate the color difference meter in accordance with
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the manufacturer’s instructions. Standardize with either a
This test method is under the jurisdiction of ASTM Committee D01 on Paint
and Related Coatings, Materials, andApplications and is the direct responsibility of
primary or working standard as defined in Test Method
Subcommittee D01.52 on Factory-Coated Wood Products.
D 2244. Restandardize at sufficient intervals, in accordance
Current edition approved Nov. 10, 2000. Published January 2000. Originally
with the manufacturer’s instructions, to minimize the effects of
published as D 3719 – 78. Last previous edition D 3719 – 95.
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Annual Book of ASTM Standards, Vol 06.01. instrumental drift.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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D3719
8.2 Determine the metric lightness, L*, in the CIE 1976 10.1.1 Arithmetic mean and range of each panel’s L value,
x
L*a*b* Uniform Color Space (CIE LAB), for each unexposed and whether fungal growth is included in the reading, as well
panel at three marked, random locations. Calculate the arith- as the calculated dirt collection index. Report if the exposed
metic mean, L*A. panel was washed before taking the light reflectance value.
8.3 Expose the panels at a 45° angle to the horizontal facing 10.1.2 Anynoticeablecolorchangewhich,forreasonsother
the equator at an exterior location for 61 days. than dirt accumulation, may have occurred. The dirt collection
8.3.1 The calendar time, location, angle of exposure, orien- index is not valid if these col
...