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Main page>ASTM Standards>ASTM D5671-20 - Standard Practice for Polishing and Etching Coal Samples for Microscopical Analysis by Reflected Light
Released: 01.10.2020
ASTM D5671-20
Standard Practice for Polishing and Etching Coal Samples for Microscopical Analysis by Reflected Light
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Standard number:
ASTM D5671-20
Released:
01.10.2020
Status:
Active
Pages:
17
Section:
05.06
Keywords:
coal microscopical analysis; etching; polishing ;
ASTM number:
ASTM D5671
Supersedes:
D5671-95R19
DESCRIPTION
1.1 This practice covers laboratory procedures for preparing an etched, polished surface of granular and block samples of coal for examination with a microscope using reflected light illumination.
1.2Units—The values stated in SI units are to be regarded as standard. The values given in parentheses after SI units are provided for information only and are not considered standard.
1.3This 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.
1.4This 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.