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ASTM International - ASTM D2013/D2013M-20

Standard Practice for Preparing Coal Samples for Analysis

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Organization: ASTM International
Publication Date: 1 February 2020
Status: inactive
Page Count: 12
ICS Code (Coals): 73.040
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... View More

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.

Document History

October 1, 2021
Standard Practice for Preparing Coal Samples for Analysis
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...
ASTM D2013/D2013M-20
February 1, 2020
Standard Practice for Preparing Coal Samples for Analysis
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....
September 1, 2018
Standard Practice for Preparing Coal Samples for Analysis
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....
April 1, 2012
Standard Practice for Preparing Coal Samples for Analysis
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...
June 1, 2011
Standard Practice for Preparing Coal Samples for Analysis
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...
November 1, 2009
Standard Practice for Preparing Coal Samples for Analysis
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...
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