ASTM D2013/D2013M-21

Standard Practice for Preparing Coal Samples for Analysis

SIGNIFICANCE AND USE
5.1 Other standards are used to collect the gross sample: Practice D2234/D2234M allows for one division of the gross sample before crushing. The mass and top size of the gross or divided sample collected by using these guides and practices are usually too large for chemical or physical testing. Practice D2013/D2013M provides instructions for reducing and dividing the gross or divided sample, by on-line or off-line processes, or both, to a top size and mass suitable to the performance of testing. Any bias in the gross or divided sample before adherence to this practice will remain in the final sample resulting from use of this practice. Therefore, carefully select the standard to be used to collect the gross sample.  
5.2 Division and reduction of a sample may occur at more than one location. Most often, the sample is collected, reduced, and divided (one or more times) by use of a mechanical sampling system. The remaining sample may be further divided on-site to facilitate transporting it to the laboratory where further reduction and division likely occurs before analysis.  
5.3 In places, this practice requires air drying the sample before subsequent reduction. Procedures for air drying and air-dry loss determination are provided in Test Method D3302/D3302M.  
5.4 Most often, samples are reduced and divided to an analysis sample. However, some tests may require a sample of different mass or top size. This procedure may be used to provide a sample of any mass and size consist from the gross or divided sample to, and including, the analysis sample.  
5.5 This practice also specifies how to prepare composite samples, if required.
SCOPE
1.1 This practice2 covers the reduction and division of gross or divided samples, and the preparation of composite samples, up to and including the individual portions for laboratory analysis.  
1.2 Reduction and division procedures are prescribed for coals of the following groups:  
1.2.1 Group A includes coals that have been cleaned in all sizes.  
1.2.2 Group B includes all other coals. Unknown coals are to be considered under Group B.  
1.2.3 Group A allows smaller weight laboratory samples to be retained than Group B. These lower weights may be used for particular coals if they have been shown, by using the procedures of A1.2, to give a sample preparation and analysis variance which is no more than 20 % of the total analysis variance.  
1.3 Units—The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.  
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.5 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-Sep-2021
• ICS: 73.040 - Coals
• Technical Committee: D05 - Coal and Coke
• Drafting Committee: D05.23 - Sampling

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: D2013/D2013M − 21
Standard Practice for
1
Preparing Coal Samples for Analysis
This standard is issued under the fixed designation D2013/D2013M; 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 U.S. Department of Defense.
1. Scope 2. Referenced Documents
2 3
1.1 This practice covers the reduction and division of gross 2.1 ASTM Standards:
or divided samples, and the preparation of composite samples, D121 Terminology of Coal and Coke
up to and including the individual portions for laboratory D2234/D2234M Practice for Collection of a Gross Sample
analysis. of Coal
D3173/D3173M Test Method for Moisture in the Analysis
1.2 Reduction and division procedures are prescribed for
Sample of Coal and Coke
coals of the following groups:
D3174 Test Method forAsh in theAnalysis Sample of Coal
1.2.1 Group A includes coals that have been cleaned in all
and Coke from Coal
sizes.
D3180 Practice for Calculating Coal and Coke Analyses
1.2.2 Group B includes all other coals. Unknown coals are
from As-Determined to Different Bases
to be considered under Group B.
D3302/D3302M Test Method for Total Moisture in Coal
1.2.3 Group A allows smaller weight laboratory samples to
D4749 Test Method for Performing the Sieve Analysis of
beretainedthanGroupB.Theselowerweightsmaybeusedfor
Coal and Designating Coal Size
particular coals if they have been shown, by using the
D7430 Practice for Mechanical Sampling of Coal
procedures of A1.2, to give a sample preparation and analysis
D7582 Test Methods for Proximate Analysis of Coal and
variance which is no more than 20 % of the total analysis
Coke by Macro Thermogravimetric Analysis
variance.
E11 Specification for Woven Wire Test Sieve Cloth and Test
1.3 Units—The values stated in either SI units or inch-
Sieves
pound units are to be regarded separately as standard. The
E177 Practice for Use of the Terms Precision and Bias in
values stated in each system are not necessarily exact equiva-
ASTM Test Methods
lents; therefore, to ensure conformance with the standard, each
E456 Terminology Relating to Quality and Statistics
system shall be used independently of the other, and values
4
2.2 ISO Standard:
from the two systems shall not be combined.
ISO 13909 Hard Coal and Coke—Mechanical Sampling
1.4 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
3. Terminology
responsibility of the user of this standard to establish appro-
3.1 Definitions of Terms Specific to This Standard—No
priate safety, health, and environmental practices and deter-
terms are used which are specific to this practice. Many terms
mine the applicability of regulatory limitations prior to use.
used in this practice may be found in Terminologies D121 and
1.5 This international standard was developed in accor-
E456 and in Practice E177.
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the
4. Summary of Practice
Development of International Standards, Guides and Recom-
4.1 Three processes of sample division and reduction are
mendations issued by the World Trade Organization Technical
covered as follows:
Barriers to Trade (TBT) Committee.
1
This practice is under the jurisdiction of ASTM Committee D05 on Coal and
3
Coke and is the direct responsibility of Subcommittee D05.23 on Sampling. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved Oct. 1, 2021. Published December 2021. Originally contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
approved in 1962. Last previous edition approved in 2020 as D2013/D2013M – 20. Standards volume information, refer to the standard’s Document Summary page on
DOI: 10.1520/D2013_D2013M-21. the ASTM website.
4
2
Formoredetailedexplanationofthispractice,seeKeller,G.E.,“Determination Available from International Organization for Standardization (ISO), ISO
of Quantities Needed in Coal Sample Preparation and Analysis,” Transactions,Vol Central Secretariat, BIBC II, Chemin de Blandonnet 8, CP 401, 1214 Vernier,
232, 1965, pp. 218–226. Geneva, Switzerland, http://www.iso.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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D2013/D2013M − 21
4.1.1 Procedure A—Manual
...

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: D2013/D2013M − 20 D2013/D2013M − 21
Standard Practice for
1
Preparing Coal Samples for Analysis
This standard is issued under the fixed designation D2013/D2013M; 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 U.S. Department of Defense.
1. Scope
2
1.1 This practice covers the reduction and division of gross or divided samples, and the preparation of composite samples, up
to and including the individual portions for laboratory analysis.
1.2 Reduction and division procedures are prescribed for coals of the following groups:
1.2.1 Group A includes coals that have been cleaned in all sizes.
1.2.2 Group B includes all other coals. Unknown coals are to be considered under Group B.
1.2.3 Group A allows smaller weight laboratory samples to be retained than Group B. These lower weights may be used for
particular coals if they have been shown, by using the procedures of A1.2, to give a sample preparation and analysis variance which
is no more than 20 % of the total analysis variance.
1.3 Units—The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in
each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used
independently of the other, and values from the two systems shall not be combined.
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, health, and environmental practices and determine the applicability of
regulatory limitations prior to use.
1.5 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
3
2.1 ASTM Standards:
D121 Terminology of Coal and Coke
D2234/D2234M Practice for Collection of a Gross Sample of Coal
D3173/D3173M Test Method for Moisture in the Analysis Sample of Coal and Coke
1
This practice is under the jurisdiction of ASTM Committee D05 on Coal and Coke and is the direct responsibility of Subcommittee D05.23 on Sampling.
Current edition approved Feb. 1, 2020Oct. 1, 2021. Published February 2020December 2021. Originally approved in 1962. Last previous edition approved in 20182020
as D2013/D2013M – 18.D2013/D2013M – 20. DOI: 10.1520/D2013_D2013M-20.10.1520/D2013_D2013M-21.
2
For more detailed explanation of this practice, see Keller, G. E., “Determination of Quantities Needed in Coal Sample Preparation and Analysis,” Transactions, Vol 232,
1965, pp. 218–226.
3
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

---------------------- Page: 1 ----------------------
D2013/D2013M − 21
D3174 Test Method for Ash in the Analysis Sample of Coal and Coke from Coal
D3180 Practice for Calculating Coal and Coke Analyses from As-Determined to Different Bases
D3302/D3302M Test Method for Total Moisture in Coal
D4749 Test Method for Performing the Sieve Analysis of Coal and Designating Coal Size
D7430 Practice for Mechanical Sampling of Coal
D7582 Test Methods for Proximate Analysis of Coal and Coke by Macro Thermogravimetric Analysis
E11 Specification for Woven Wire Test Sieve Cloth and Test Sieves
E177 Practice for Use of the Terms Precision and Bias in ASTM Test Methods
E456 Terminology Relating to Quality and Statistics
4
2.2 ISO Standard:
ISO 13909 Hard Coal and Coke—Mechanical Sampling
3. Terminology
3.1 Definitions of Terms Specific to This Standard—No terms are used which are specific to this practice. Many terms used in this
practice may be found in Terminologies D121 and E456 and in Practice E177.
4. Summary of Practice
4.1 Three processes of sample division and reduction are covered as fo
...