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 inchpound 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.
ASTM D2013/D2013M-21 Referenced Document
ASTM D121 Standard Terminology of Coal and Coke*, 2024-03-01 Update
ASTM D2234/D2234M Standard Practice for Collection of a Gross Sample of Coal
ASTM D3173/D3173M Standard Test Method for Moisture in the Analysis Sample of Coal and Coke
ASTM D3174 Standard Test Method for Ash in the Analysis Sample of Coal and Coke from Coal
ASTM D3180 Standard Practice for Calculating Coal and Coke Analyses from As-Determined to Different Bases
ASTM D3302/D3302M Standard Test Method for Total Moisture in Coal*, 2022-12-15 Update
ASTM D4749 Standard Test Method for Performing the Sieve Analysis of Coal and Designating Coal Size
ASTM D7430 Standard Practice for Mechanical Sampling of Coal
ASTM D7582 Standard Test Methods for Proximate Analysis of Coal and Coke by Macro Thermogravimetric Analysis*, 2023-12-01 Update
ASTM E11 Standard Specification for Wire Cloth and Sieves for Testing Purposes
ASTM E177 Standard Practice for Use of the Terms Precision and Bias in ASTM Test Methods
ASTM E456 Standard Terminology for Relating to Quality and Statistics
ISO 13909 Hard coal and coke - Mechanical sampling - Part 8: Methods of testing for bias
ASTM D2013/D2013M-21 history
2021ASTM D2013/D2013M-21 Standard Practice for Preparing Coal Samples for Analysis
2020ASTM D2013/D2013M-20 Standard Practice of Preparing Coal Samples for Analysis
2018ASTM D2013/D2013M-18 Standard Practice for Preparing Coal Samples for Analysis
2012ASTM D2013/D2013M-12 Standard Practice for Preparing Coal Samples for Analysis
2011ASTM D2013/D2013M-11 Standard Practice for Preparing Coal Samples for Analysis
2009ASTM D2013/D2013M-09 Standard Practice for Preparing Coal Samples for Analysis
2007ASTM D2013-07 Standard Practice for Preparing Coal Samples for Analysis
2004ASTM D2013-04 Standard Practice of Preparing Coal Samples for Analysis
2003ASTM D2013-03 Standard Practice of Preparing Coal Samples for Analysis
2001ASTM D2013-01 Standard Practice of Preparing Coal Samples for Analysis
2000ASTM D2013-00ae1 Standard Practice of Preparing Coal Samples for Analysis
2000ASTM D2013-00a Standard Practice of Preparing Coal Samples for Analysis
2000ASTM D2013-00 Standard Practice of Preparing Coal Samples for Analysis
1986ASTM D2013-86(1994) Standard Method of Preparing Coal Samples for Analysis
1972ASTM D2013-72 Standard Method Of Preparing Coal Samples For Analysis