ASTM International - ASTM D2797/D2797M-20

Standard Practice for Preparing Coal Samples for Microscopical Analysis by Reflected Light

historical
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Organization: ASTM International
Publication Date: 1 February 2020
Status: historical
Page Count: 5
ICS Code (Coals): 73.040
significance And Use:

4.1 Briquets of granular bituminous coals and anthracite prepared in accordance with the laboratory procedures of this practice will have flat, scratch-free surfaces suitable for examination with... View More

scope:

1.1 This practice covers laboratory procedures for the preparation of granular samples of bituminous coal and anthracite samples for examination with a microscope using reflected light illumination. It does not apply to the preparation of oriented blocks of coal.

1.2 Units-The values stated in either SI units or non-SI 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.

1.3 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.

1.4 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

August 1, 2020
Standard Practice for Preparing Coal Samples for Microscopical Analysis by Reflected Light
1.1 This practice covers laboratory procedures for the preparation of granular samples of bituminous coal and anthracite samples for examination with a microscope using reflected light illumination....
ASTM D2797/D2797M-20
February 1, 2020
Standard Practice for Preparing Coal Samples for Microscopical Analysis by Reflected Light
1.1 This practice covers laboratory procedures for the preparation of granular samples of bituminous coal and anthracite samples for examination with a microscope using reflected light illumination....
November 1, 2019
Standard Practice for Preparing Coal Samples for Microscopical Analysis by Reflected Light
1.1 This practice covers laboratory procedures for the preparation of granular samples of bituminous coal and anthracite samples for examination with a microscope using reflected light illumination....
June 1, 2011
Standard Practice for Preparing Coal Samples for Microscopical Analysis by Reflected Light
1.1 This practice covers laboratory procedures for the preparation of granular samples of bituminous coal and anthracite samples for examination with a microscope using reflected light illumination....
April 15, 2011
Standard Practice for Preparing Coal Samples for Microscopical Analysis by Reflected Light
1.1 This practice covers laboratory procedures for the preparation of granular samples of bituminous coal and anthracite samples for examination with a microscope using reflected light illumination....
October 1, 2007
Standard Practice for Preparing Coal Samples for Microscopical Analysis by Reflected Light
1.1 This practice covers laboratory procedures for the preparation of granular samples of bituminous coal and anthracite samples for examination with a microscope using reflected light illumination....
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