ASTM D5589-19

Standard Test Method for Determining the Resistance of Paint Films and Related Coatings to Algal Defacement

SIGNIFICANCE AND USE
4.1 Defacement of paint and coating films by algal growth is a common phenomenon under certain conditions. It is generally known that differences in the environment, lighting, temperature, substrate, and other factors in addition to the coating composition affect the susceptibility of a given painted surface. This test method attempts to provide a means to comparatively evaluate different coating formulations for their relative performance under a given set of conditions. It does not imply that a coating that resists growth under these conditions will necessarily resist growth in the actual application.  
4.2 Familiarity with microbiological techniques is required. This test method should not be used by persons without at least basic microbiological training.
SCOPE
1.1 This test method covers an accelerated method for determining the relative resistance of a paint or coating film to algal growth.  
Note 1: It is hoped that a ranking of relative performance would be similar to that ranked from outdoor exposures. However, this test method should not be used as a replacement for exterior exposure since many other factors, only a few of which are listed will affect those results.
Note 2: ASTM weathering standards are no longer referenced in this document, but Practices D822, D4141, D4587, D5031, and D6695 are commonly used.  
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.  
1.3 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.4 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.

General Information

• Status: Published
• Publication Date: 30-Nov-2019
• ICS: 87.040 - Paints and varnishes
• Technical Committee: D01 - Paint and Related Coatings, Materials, and Applications
• Drafting Committee: D01.28 - Biodeterioration

Standards Content (Sample)

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.
Designation: D5589 − 19
Standard Test Method for
Determining the Resistance of Paint Films and Related
1
Coatings to Algal Defacement
This standard is issued under the fixed designation D5589; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope D4587 Practice for Fluorescent UV-Condensation Expo-
sures of Paint and Related Coatings
1.1 This test method covers an accelerated method for
D5031 Practice for Enclosed Carbon-Arc Exposure Tests of
determining the relative resistance of a paint or coating film to
Paint and Related Coatings
algal growth.
D6695 Practice for Xenon-Arc Exposures of Paint and
NOTE 1—It is hoped that a ranking of relative performance would be
Related Coatings
similar to that ranked from outdoor exposures. However, this test method
should not be used as a replacement for exterior exposure since many
3. Summary of Test Method
other factors, only a few of which are listed will affect those results.
NOTE 2—ASTM weathering standards are no longer referenced in this
3.1 This test method outlines a procedure to (1) prepare a
document, but Practices D822, D4141, D4587, D5031, and D6695 are
suitable specimen for testing, (2) inoculate the specimen with
commonly used.
a mixture of the proper algal species, (3) expose the inoculated
1.2 The values stated in SI units are to be regarded as the
samples under the appropriate conditions for growth, and (4)
standard. The values given in parentheses are for information
provide a schedule and guidelines for visual growth ratings.
only.
This test method is not designed to include all the necessary
procedures to maintain the proper microbiological techniques
1.3 This standard does not purport to address all of the
required to provide the most accurate results.
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
4. Significance and Use
priate safety, health, and environmental practices and deter-
mine the applicability of regulatory limitations prior to use.
4.1 Defacementofpaintandcoatingfilmsbyalgalgrowthis
1.4 This international standard was developed in accor-
a common phenomenon under certain conditions. It is gener-
dance with internationally recognized principles on standard-
ally known that differences in the environment, lighting,
ization established in the Decision on Principles for the
temperature, substrate, and other factors in addition to the
Development of International Standards, Guides and Recom-
coating composition affect the susceptibility of a given painted
mendations issued by the World Trade Organization Technical
surface. This test method attempts to provide a means to
Barriers to Trade (TBT) Committee.
comparatively evaluate different coating formulations for their
relative performance under a given set of conditions. It does
2. Referenced Documents
not imply that a coating that resists growth under these
2
conditions will necessarily resist growth in the actual applica-
2.1 ASTM Standards:
tion.
D822 Practice for Filtered Open-Flame Carbon-Arc Expo-
sures of Paint and Related Coatings
4.2 Familiarity with microbiological techniques is required.
D4141 Practice for Conducting Black Box and Solar Con-
This test method should not be used by persons without at least
centrating Exposures of Coatings
basic microbiological training.
5. Apparatus and Materials
1
This test method is under the jurisdiction of ASTM Committee D01 on Paint 5.1 Balance, capable of weighing to 0.10 g.
and Related Coatings, Materials, andApplications and is the direct responsibility of
5.2 Incubator, or other device capable of maintaining a
Subcommittee D01.28 on Biodeterioration.
Current edition approved Dec. 1, 2019. Published December 2019. Originally constant temperature between 25 6 2°C, relative humidity of
approved in 1994. Last previous edition approved in 2013 as D5589 – 09 (2013).
≥85 %, and having a constant full spectrum (see Note 3) light
DOI: 10.1520/D5589-19.
source.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
5.3 Refrigerator.
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. 5.4 Petri Dishes, 100 by 15 mm (3.9 by 0.6 in.).
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D5589 − 09 (Reapproved 2013) D5589 − 19
Standard Test Method for
Determining the Resistance of Paint Films and Related
1
Coatings to Algal Defacement
This standard is issued under the fixed designation D5589; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 This test method covers an accelerated method for determining the relative resistance of a paint or coating film to algal
growth.
NOTE 1—It is hoped that a ranking of relative performance would be similar to that ranked from outdoor exposures. However, this test method should
not be used as a replacement for exterior exposure since many other factors, only a few of which are listed will affect those results.
NOTE 2—ASTM weathering standards are no longer referenced in this document, but Practices D822, D4141, D4587, D5031, and D6695 are commonly
used.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.3 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 safety, health, and healthenvironmental practices and determine the
applicability of regulatory limitations prior to use.
1.4 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.
2. Referenced Documents
2
2.1 ASTM Standards:
D822 Practice for Filtered Open-Flame Carbon-Arc Exposures of Paint and Related Coatings
D4141 Practice for Conducting Black Box and Solar Concentrating Exposures of Coatings
D4587 Practice for Fluorescent UV-Condensation Exposures of Paint and Related Coatings
D5031 Practice for Enclosed Carbon-Arc Exposure Tests of Paint and Related Coatings
D6695 Practice for Xenon-Arc Exposures of Paint and Related Coatings
3. Summary of Test Method
3.1 This test method outlines a procedure to (1) prepare a suitable specimen for testing, (2) inoculate the specimen with a
mixture of the proper algal species, (3) expose the inoculated samples under the appropriate conditions for growth, and (4) provide
a schedule and guidelines for visual growth ratings. This test method is not designed to include all the necessary procedures to
maintain the proper microbiological techniques required to provide the most accurate results.
4. Significance and Use
4.1 Defacement of paint and coating films by algal growth is a common phenomenon under certain conditions. It is generally
known that differences in the environment, lighting, temperature, substrate, and other factors in addition to the coating composition
affect the susceptibility of a given painted surface. This test method attempts to provide a means to comparatively evaluate different
coating formulations for their relative performance under a given set of conditions. It does not imply that a coating that resists
growth under these conditions will necessarily resist growth in the actual application (see application.Note 1).
1
This test method is under the jurisdiction of ASTM Committee D01 on Paint and Related Coatings, Materials, and Applications and is the direct responsibility of
Subcommittee D01.28 on Biodeterioration.
Current edition approved Oct. 1, 2013Dec. 1, 2019. Published October 2013December 2019. Originally approved in 1994. Last previous edition approved in 20092013
as D5589 – 09.D5589 – 09 (2013). DOI: 10.1520/D5589-09R13.10.1520/D5589-19.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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D5589 − 19
4.2 Familiarity with microbiological techniques is required. This test method should not be used by persons without at least
basic microbiological training.
5. Apparatus and Materials
5.1 Balance, capab
...