ASTM D6323-19
(Guide)Standard Guide for Laboratory Subsampling of Media Related to Waste Management Activities
Standard Guide for Laboratory Subsampling of Media Related to Waste Management Activities
SIGNIFICANCE AND USE
4.1 This guide discusses options for taking a subsample from a sample submitted to a laboratory. If followed, it will minimize the bias and variance of the characteristic of interest of the laboratory sample prior to analysis.
4.2 The guide will describe appropriate instructions to be submitted to the laboratory with the field sample.
4.3 This guide is intended for use in the laboratory to take a representative subsample or specimen of the whole field sample for direct analysis or sample preparation for analysis. It is intended for field personnel, data users, laboratory sample reception personnel, analysts, and managers.
4.4 To obtain a representative subsample, layer analysis, grinding, mixing, and changing the physical state such as digesting, drying, melting, or freezing may be required. This guide considers cone and quartering, riffle splitting, and particle size reduction.
SCOPE
1.1 This guide covers common techniques for obtaining representative subsamples from a sample received at a laboratory for analysis. These samples may include solids, sludges, liquids, or multilayered liquids (with or without solids).
1.2 The procedures and techniques discussed in this guide depend upon the sample matrix, the type of sample preparation and analysis performed, the characteristic(s) of interest, and the project-specific instructions or data quality objectives.
1.3 This guide includes several sample homogenization techniques, including mixing and grinding, as well as information on how to obtain a specimen or split laboratory samples.
1.4 This guide does not apply to air or gas sampling.
1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.6 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.
1.7 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
Relations
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: D6323 − 19
Standard Guide for
Laboratory Subsampling of Media Related to Waste
1
Management Activities
This standard is issued under the fixed designation D6323; 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 C702/C702M Practice for Reducing Samples of Aggregate
to Testing Size
1.1 This guide covers common techniques for obtaining
C859 Terminology Relating to Nuclear Materials
representative subsamples from a sample received at a labora-
D346/D346M Practice for Collection and Preparation of
tory for analysis. These samples may include solids, sludges,
Coke Samples for Laboratory Analysis
liquids, or multilayered liquids (with or without solids).
D2234/D2234M Practice for Collection of a Gross Sample
1.2 The procedures and techniques discussed in this guide
of Coal
depend upon the sample matrix, the type of sample preparation
D4547 Guide for Sampling Waste and Soils for Volatile
andanalysisperformed,thecharacteristic(s)ofinterest,andthe
Organic Compounds
project-specific instructions or data quality objectives.
D4823 Guide for Core Sampling Submerged, Unconsoli-
1.3 This guide includes several sample homogenization dated Sediments
D5681 Terminology for Waste and Waste Management
techniques, including mixing and grinding, as well as informa-
tion on how to obtain a specimen or split laboratory samples. D5743 Practice for Sampling Single or Multilayered
Liquids, With or Without Solids, in Drums or Similar
1.4 This guide does not apply to air or gas sampling.
Containers
1.5 The values stated in SI units are to be regarded as
D6051 Guide for Composite Sampling and Field Subsam-
standard. No other units of measurement are included in this
pling for Environmental Waste Management Activities
standard.
3. Terminology
1.6 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
3.1 Definitions—For definitions of terms used in this guide,
responsibility of the user of this standard to establish appro-
refer to Terminology D5681.
priate safety, health, and environmental practices and deter-
3.2 Definitions of Terms Specific to This Standard:
mine the applicability of regulatory limitations prior to use.
3.2.1 contaminant unit, n—the largest particle size that
1.7 This international standard was developed in accor-
contains the contaminant of interest
dance with internationally recognized principles on standard-
3.2.1.1 Discussion—The contaminant of concern, as defined
ization established in the Decision on Principles for the
by the project objectives, may be associated with all the
Development of International Standards, Guides and Recom-
particle sizes or associated with only a certain particle size or
mendations issued by the World Trade Organization Technical
sizes. At the time of waste generation, discharge, or spill, the
Barriers to Trade (TBT) Committee.
particle size of this contaminant of concern may be on the
atomic or molecular scale, such as solvent spill into sand, or a
2. Referenced Documents
macroscale, such as lead acid batteries at a dump site. The
2
2.1 ASTM Standards:
contaminant unit may also be in between these scales, such as
leadparticlesencapsulatedincoal.Inpractice,thecontaminant
unit may change if the contaminant unit becomes absorbed or
1
This guide is under the jurisdiction of ASTM Committee D34 on Waste
adsorbed to particles larger than the contaminant unit. It is the
Management and is the direct responsibility of Subcommittee D34.01.01 on
Planning for Sampling. size of the contaminant unit at the time of subsampling, not at
Current edition approved Feb. 1, 2019. Published February 2019. Originally
the time of generation, that is referred to as the contaminant
ɛ1
approved in 1998. Last previous edition approved in 2012 as D6323 – 12 , which
unit.
was withdrawn in October 2018 and reinstated in February 2019. DOI: 10.1520/
D6323-19.
3.2.2 maximum allowable particle size, n—the largest lineal
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
dimension of a sample’s individual particles accepted for a
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
given sample mass.
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. 3.2.2.1 Discussion—The maximum allowable particle size
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