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ASTM D8008-15

(Practice)

Standard Practice for Representative Field Sampling of Traffic Paints

Standard Practice for Representative Field Sampling of Traffic Paints

SIGNIFICANCE AND USE
5.1 For quality assessment and/or approval for use of traffic paint stored in the field, it is often necessary to obtain a representative sample for testing. Correct sampling of traffic paint is a skilled operation, and if not properly conducted with the right equipment and procedures, a sample may inadvertently fail one or more specification tests when evaluated by a testing laboratory. Among the test results that could be affected are solids content, resin content, TiO2 content, heat-age stability, freeze-thaw stability, and dry time. Any of these could inadvertently result in non-approval or penalties.
SCOPE
1.1 This practice covers procedures for obtaining representative field samples of mixed or unmixed waterborne, solventborne, or other liquid traffic paints from drums, totes, or machine striping tanks. Traffic paint samples are often taken from storage containers in the field by paint suppliers or government agencies for laboratory testing to determine product quality and/or for approvals prior to striping. It is important that the samples taken are “representative” (have a composition reflecting the overall composition in the container). Although traffic paints can remain homogeneous for weeks or months, some will stratify over time and become non-homogeneous. Obtaining a representative sample can be challenging particularly in a field environment. The desired method for obtaining a liquid sample is to thoroughly mix the sample until homogeneous and then sample the mixture from the top. If complete mixing can’t be verified then an alternative practice is to obtain a sample using a liquid tube sampling device. These devices have the ability to capture a top-to-bottom core of paint from the container. Inner or outer rod tube samplers are recommended for sample extraction. The inner rod tube sampler is the preferred sampler.  
1.2 The practice selected for representative sampling should have written agreement between the parties providing the product and those testing the product.  
1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.  
1.4 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.

General Information

Status
Historical
Publication Date
30-Jun-2015
ICS
87.040 - Paints and varnishes
93.080.20 - Road construction materials
Technical Committee
D01 - Paint and Related Coatings, Materials, and Applications
Drafting Committee
D01.44 - Traffic Coatings
Current Stage
Ref Project

Relations

Referred By
ASTM D2205-20 - Standard Guide for Selection of Tests for Traffic Paints
Effective Date
01-Jul-2015
Referred By
ASTM D8367-21 - Standard Practice for Making a Laboratory Pavement Marking Sample Using a Pavement Marking and Drop-on Particles
Effective Date
01-Jul-2015

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ASTM D8008-15 - Standard Practice for Representative Field Sampling of Traffic PaintsASTM D8008-15 - Standard Practice for Representative Field Sampling of Traffic Paints
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ASTM D8008-15 - Standard Practice for Representative Field Sampling of Traffic Paints
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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: D8008 − 15
Standard Practice for
1
Representative Field Sampling of Traffic Paints
This standard is issued under the fixed designation D8008; 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 2. Referenced Documents
2
1.1 This practice covers procedures for obtaining represen- 2.1 ASTM Standards:
tative field samples of mixed or unmixed waterborne, D562 Test Method for Consistency of Paints Measuring
solventborne, or other liquid traffic paints from drums, totes, or KrebsUnit(KU)ViscosityUsingaStormer-TypeViscom-
machine striping tanks. Traffic paint samples are often taken eter
from storage containers in the field by paint suppliers or D1475 Test Method For Density of Liquid Coatings, Inks,
government agencies for laboratory testing to determine prod- and Related Products
uct quality and/or for approvals prior to striping. It is important D3925 Practice for Sampling Liquid Paints and Related
thatthesamplestakenare“representative”(haveacomposition Pigmented Coatings
reflecting the overall composition in the container). Although D5495 Practice for Sampling With a Composite Liquid
traffic paints can remain homogeneous for weeks or months, Waste Sampler (COLIWASA)
3
some will stratify over time and become non-homogeneous.
2.2 ISO Documents:
Obtaining a representative sample can be challenging particu-
ISO 1513 Paints and varnishes — Examination and prepa-
larly in a field environment. The desired method for obtaining
ration of test samples
a liquid sample is to thoroughly mix the sample until homo-
ISO 15528 Paints, varnishes, and raw materials for paints
geneous and then sample the mixture from the top. If complete
and varnishes — Sampling
mixing can’t be verified then an alternative practice is to obtain
a sample using a liquid tube sampling device. These devices
3. Terminology
have the ability to capture a top-to-bottom core of paint from
3.1 The following terms apply to this practice:
the container. Inner or outer rod tube samplers are recom-
3.1.1 COLIWASA (composite liquid waste sampler), n—a
mended for sample extraction. The inner rod tube sampler is
tube type device that is typically used as a zone sampler for
the preferred sampler.
many types of liquids.
1.2 The practice selected for representative sampling should
3.1.2 composite core sampler, n—a compartmented tube
have written agreement between the parties providing the
type sampler that is potentially capable of obtaining a repre-
product and those testing the product.
sentative core sample.
1.3 The values stated in inch-pound units are to be regarded
3.1.3 core sample, n—a sample extracted from a container
as standard. The values given in parentheses are mathematical
top-to-bottom with a tube type device.
conversions to SI units that are provided for information only
3.1.4 liquid scoop, n—a type of liquid thief sampler with
and are not considered standard.
compartments and slide closure that potentially can be used to
1.4 This standard does not purport to address all of the
obtain a representative core sample
safety concerns, if any, associated with its use. It is the
3.1.5 liquid thief sampler, n—a tube or scoop device used to
responsibility of the user of this standard to establish appro-
extract a liquid sample.
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
1
This practice is under the jurisdiction of ASTM Committee D01 on Paint and contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Related Coatings, Materials, and Applications and is the direct responsibility of Standards volume information, refer to the standard’s Document Summary page on
Subcommittee D01.44 on Traffic Coatings. the ASTM website.
3
Current edition approved July 1, 2015. Published August 2015. DOI: 10.1520/ Available from American National Standards Institute (ANSI), 25 W. 43rd St.,
D8008-15. 4th Floor, New York, NY 10036, http://www.ansi.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D8008 − 15
3.1.6 pigment settling/pigment sedimentation, n—increase when first made in production and also initially in the storage
inpigmentconcentrationtowardthebottomofacontainerover containers when shipped out into the field for striping. The
time mainly due to the effects of gravity.
paints can be very stable and homogeneous for weeks or
months. However, depending on a paint formu
...

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5.1 For quality assessment and/or approval for use of traffic paint stored in the field, it is often necessary to obtain a representative sample for testing. Correct sampling of traffic paint is a skilled operation, and if not properly conducted with the right equipment and procedures, a sample may inadvertently fail one or more specification tests when evaluated by a testing laboratory. Among the test results that could be affected are solids content, resin content, TiO2 content, heat-age stability, freeze-thaw stability, and dry time. Any of these could inadvertently result in non-approval or penalties.
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5.1 For quality assessment and/or approval for use of traffic paint stored in the field, it is often necessary to obtain a representative sample for testing. Correct sampling of traffic paint is a skilled operation, and if not properly conducted with the right equipment and procedures, a sample may inadvertently fail one or more specification tests when evaluated by a testing laboratory. Among the test results that could be affected are solids content, resin content, TiO2 content, heat-age stability, freeze-thaw stability, and dry time. Any of these could inadvertently result in non-approval or penalties.
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