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ASTM D3925-02

(Practice)

Standard Practice for Sampling Liquid Paints and Related Pigmented Coatings

Standard Practice for Sampling Liquid Paints and Related Pigmented Coatings

SIGNIFICANCE AND USE
Samples are taken from batches, lots, and shipments of paint in order to determine their uniformity and compliance with specification requirements. It is very important that these samples be of convenient and economical size and that they be representative of the batch of paint at the time it was filled into shipping or storage containers.
The time and effort necessary to ensure that the sample is representative of the original material will be repaid in reduction of laboratory work and elimination of possible rejections of acceptable material.
SCOPE
1.1 This practice describes methods of taking representative samples of fluid paint or pigmented coating products from containers of any type.
1.2 Two ISO standards, ISO 1513 and ISO 15528, cover the details and equipment for sampling of liquid paints and associated materials in much greater detail than this standard. The reader is referred to those standards for more information
1.3 The sampling of dry powder paints, clear coatings, mixed solvents, and nonpigmented materials of any type is not covered in this procedure.
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
09-Aug-2002
ICS
87.040 - Paints and varnishes
Technical Committee
D01 - Paint and Related Coatings, Materials, and Applications
Drafting Committee
D01.21 - Chemical Analysis of Paints and Paint Materials
Current Stage
Ref Project

Relations

Replaces
ASTM D3925-91(1996) - Standard Practice for Sampling Liquid Paints and Related Pigmented Coatings
Effective Date
10-Aug-2002
Replaced By
ASTM D3925-02(2010) - Standard Practice for Sampling Liquid Paints and Related Pigmented Coatings
Effective Date
01-Dec-2010
Referred By
ASTM D2369-20 - Standard Test Method for Volatile Content of Coatings
Effective Date
10-Aug-2002
Referred By
ASTM D5150-92(2017) - Standard Test Method for Hiding Power of Architectural Paints Applied by Roller
Effective Date
10-Aug-2002
Referred By
ASTM D6886-18 - Standard Test Method for Determination of the Weight Percent Individual Volatile Organic Compounds in Waterborne Air-Dry Coatings by Gas Chromatography
Effective Date
10-Aug-2002
Referred By
ASTM D7358-07(2018) - Standard Test Method for Water Content of Paints by Quantitative Calcium Hydride Reaction Test Kit
Effective Date
10-Aug-2002
Referred By
ASTM E1795-20a - Standard Specification for Non-Reinforced Liquid Coating Encapsulation Products for Leaded Paint in Buildings
Effective Date
10-Aug-2002
Referred By
ASTM D4359-90(2019) - Standard Test Method for Determining Whether a Material Is a Liquid or a Solid
Effective Date
10-Aug-2002
Referred By
ASTM D5895-20 - Standard Test Methods for Evaluating Drying or Curing During Film Formation of Organic Coatings Using Mechanical Recorders
Effective Date
10-Aug-2002
Referred By
ASTM D7073-20 - Standard Guide for Application and Evaluation of Brush and Roller Applied Paint Films
Effective Date
10-Aug-2002
Referred By
ASTM D7088-17(2023) - Standard Practice for Resistance to Hydrostatic Pressure for Coatings Used in Below Grade Applications Applied to Masonry
Effective Date
10-Aug-2002
Referred By
ASTM D5327-97(2021)e1 - Standard Practice for Evaluating and Comparing Transfer Efficiency of Spray Applied Coatings Under General Laboratory Conditions
Effective Date
10-Aug-2002
Referred By
ASTM D4764-01(2023) - Standard Test Method for Determination by X-ray Fluorescence Spectroscopy of Titanium Dioxide Content in Paint
Effective Date
10-Aug-2002
Referred By
ASTM D5009-02(2023) - Standard Test Method for Evaluating and Comparing Transfer Efficiency of Spray Applied Coatings Under Laboratory Conditions
Effective Date
10-Aug-2002
Referred By
ASTM D5324-16(2022) - Standard Guide for Testing Water-Borne Architectural Coatings
Effective Date
10-Aug-2002

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ASTM D3925-02 - Standard Practice for Sampling Liquid Paints and Related Pigmented CoatingsASTM D3925-02 - Standard Practice for Sampling Liquid Paints and Related Pigmented Coatings
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ASTM D3925-02 - Standard Practice for Sampling Liquid Paints and Related Pigmented Coatings
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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:D3925–02
Standard Practice for
1
Sampling Liquid Paints and Related Pigmented Coatings
This standard is issued under the fixed designation D3925; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope 3.1.1 batch, n—the quantity of liquid paint or coating
produced in the final mixing operation after all production
1.1 This practice describes methods of taking representative
processes are complete. For example, when a number of
samples of fluid paint or pigmented coating products from
pigment dispersions are reduced with additional vehicle to-
containers of any type.
gether in a large tank, the resulting final mixture is one batch.
1.2 Two ISO standards, ISO 1513 and ISO 15528, cover the
details and equipment for sampling of liquid paints and
4. Significance and Use
associated materials in much greater detail than this standard.
4.1 Samples are taken from batches, lots, and shipments of
The reader is referred to those standards for more information
paint in order to determine their uniformity and compliance
1.3 The sampling of dry powder paints, clear coatings,
with specification requirements. It is very important that these
mixed solvents, and nonpigmented materials of any type is not
samples be of convenient and economical size and that they be
covered in this procedure.
representative of the batch of paint at the time it was filled into
1.4 This standard does not purport to address all of the
shipping or storage containers.
safety concerns, if any, associated with its use. It is the
4.2 The time and effort necessary to ensure that the sample
responsibility of the user of this standard to establish appro-
is representative of the original material will be repaid in
priate safety and health practices and determine the applica-
reduction of laboratory work and elimination of possible
bility of regulatory limitations prior to use.
rejections of acceptable material.
2. Referenced Documents
5. Sampling Considerations
2
2.1 ASTM Standards:
5.1 The use of common sense and good judgment is
D1475 Test Method For Density of Liquid Coatings, Inks,
important even in the apparently simple task of taking samples.
and Related Products
5.2 Use care to ensure that all containers, agitating equip-
2.2 ISO Documents:
ment, and sampling apparatus are clean and that they can in no
ISO 1513 Paints and varnishes—Examination and prepara-
3 way contaminate the sample being taken. Slight contamination
tion of samples for testing
of the paint sample may lead to false test results.
ISO 15528 Paints, varnishes and raw materials for paints
3 5.3 The sample container should be dry and not cooler than
and varnishes—Sampling
the temperature of the area in which the sample is to be taken.
3. Terminology 5.4 Because pigmented coatings are dispersions and not
solutions, finely divided pigment particles dispersed in the
3.1 Definitions of Term Specific to This Standard:
coating vehicle may settle upon standing. Consequently, thor-
ough and careful agitation before sampling is necessary to
restore the paint to its original, uniform condition. The method
1
This practice is under the jurisdiction of ASTM Committee D01 on Paint and
of agitating or stirring is therefore of prime importance.
Related Coatings, Materials, and Applications and is the direct responsibility of
Subcommittee D01.21 on Chemical Analysis of Paints and Paint Materials.
5.5 As soon as samples of paint are taken from the shipping
Current edition approved Aug. 10, 2002. Published October 2002. Originally
or storage container, place them in clean, nonreactive, dry,
published as D3925 – 80. Last previous edition D3925 – 91 (1996). DOI: 10.1520/
air-tight containers to prevent evaporation. Do not store
D3925-02.
2
samples in plastic bottles because volatile solvents may diffuse
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
through the walls. Loss of volatile solvents may introduce
Standards volume information, refer to the standard’s Document Summary page on
errors in such tests as viscosity, weight per gallon, and
the ASTM website.
3 nonvolatile content as well as other properties. If cap liners are
Available from American National Standards Institute (ANSI), 25 W. 43rd St.,
4th Floor, New York, NY 10036, http://www.ansi.org. used, they should also be nonreactive with the material. If the
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-295
...

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