Standard Practice for Field Sampling of Coating Films for Analysis for Heavy Metals

SIGNIFICANCE AND USE
3.1 Prior to beginning a project that involves the removal, cutting, grinding, or burning of paint, it is necessary to determine if the coating contains hazardous metals, such as lead. If it does, certain requirements for worker and environmental protection may need to be imposed. The presence and quantity of hazardous metals in a paint can be determined through laboratory analysis. Proper sampling protocol is needed to assure the laboratory results represent the actual amount of heavy metal in the coating. The number and location of samples to be removed must also be determined to characterize properly the extent of the presence of hazardous materials, if any, on a structure.
SCOPE
1.1 This practice covers a method to control the removal of samples of coating films from substrates for subsequent laboratory analysis for heavy metal content on a mass basis. This technique can be used in the field, the fabricating shop, or laboratory.  
1.2 The values stated in SI units are to be regarded as the standard. The values 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. For specific hazard information, see Section 5, Note 1, and Note 3.  
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.

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Status
Published
Publication Date
30-Nov-2022
Current Stage
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ASTM D5702-18(2022) - Standard Practice for Field Sampling of Coating Films for Analysis for Heavy Metals
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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: D5702 − 18 (Reapproved 2022)
Standard Practice for
Field Sampling of Coating Films for Analysis for Heavy
Metals
This standard is issued under the fixed designation D5702; 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 Ferrous Metals and Nonmagnetic, Nonconductive Coat-
ings Applied to Non-Ferrous Metals
1.1 This practice covers a method to control the removal of
samples of coating films from substrates for subsequent labo-
3. Significance and Use
ratory analysis for heavy metal content on a mass basis. This
3.1 Prior to beginning a project that involves the removal,
technique can be used in the field, the fabricating shop, or
cutting, grinding, or burning of paint, it is necessary to
laboratory.
determine if the coating contains hazardous metals, such as
1.2 The values stated in SI units are to be regarded as the
lead. If it does, certain requirements for worker and environ-
standard. The values in parentheses are for information only.
mental protection may need to be imposed. The presence and
1.3 This standard does not purport to address all of the
quantity of hazardous metals in a paint can be determined
safety concerns, if any, associated with its use. It is the
through laboratory analysis. Proper sampling protocol is
responsibility of the user of this standard to establish appro-
needed to assure the laboratory results represent the actual
priate safety, health, and environmental practices and deter-
amount of heavy metal in the coating.The number and location
mine the applicability of regulatory limitations prior to use.
of samples to be removed must also be determined to charac-
For specific hazard information, see Section 5, Note 1, and
terize properly the extent of the presence of hazardous
Note 3.
materials, if any, on a structure.
1.4 This international standard was developed in accor-
4. Materials and Equipment
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the
4.1 Sample Collection Container—A clean plastic bag or
Development of International Standards, Guides and Recom-
rigid container comprised of a material such as polyethylene
mendations issued by the World Trade Organization Technical
that will not contaminate the sample.
Barriers to Trade (TBT) Committee.
4.2 Straight Edge or Ruler.
2. Referenced Documents 4.3 Knife or Chisel, cleaned and sharpened, for removing
2 paint samples.
2.1 ASTM Standards:
D4138 Practices for Measurement of Dry Film Thickness of 4.4 Dry Film Thickness Gage, for measuring total coating
Protective Coating Systems by Destructive, Cross- thickness.
Sectioning Means
5. Procedure
D6132 Test Method for Nondestructive Measurement of Dry
Film Thickness of Applied Organic Coatings Using an
5.1 Select a sufficient number of areas for coating removal
Ultrasonic Coating Thickness Gage that properly characterize the coatings on the structure.
D7091 Practice for Nondestructive Measurement of Dry
5.1.1 Selection may be based on painting history, knowl-
Film Thickness of Nonmagnetic Coatings Applied to edge of previously applied coatings, prior touch-up and re-
painting programs, and other such factors.
5.1.2 Select areas that properly characterize the range of
This practice is under the jurisdiction of ASTM Committee D01 on Paint and
thickness found. Dry film thickness can be measured in
Related Coatings, Materials, and Applications and is the direct responsibility of
accordance with Test Methods D4138, D6132, or Practice
Subcommittee D01.46 on Industrial Protective Coatings.
Current edition approved Dec. 1, 2022. Published December 2022. Originally D7091.
approved in 1995. Last previous edition approved in 2018 as D5702 – 18. DOI:
5.1.3 Remove a minimum of three samples.
10.1520/D5702-18R22.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or 5.2 At each sample site, clean the surface of dirt, dust, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
debris.
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