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ASTM D5671 1995 Edition, July 15, 1995
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Standard Practice for Polishing and Etching Coal Samples for Microscopical Analysis by Reflected Light
Includes all amendments and changes through Reapproval Notice , 2011
Page Count:4
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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.

The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

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 and health practices and determine the applicability of regulatory limitations prior to use.