ASTM D2798-11a
Standard Test Method for Microscopical Determination of the Vitrinite Reflectance of Coal

Standard No.

ASTM D2798-11a

Release Date

2011

Published By

American Society for Testing and Materials (ASTM)

Status

Be replaced

Replace By

ASTM D2798-11a(2019)

Latest

ASTM D2798-21

Scope

The mean maximum reflectance of the vitrinite component in coal as determined by this test method is often used as an indicator of rank as presented in Classification D388, independent of petrographic composition, and in the characterization of coal as feedstock for carbonization, gasification, liquefaction, and combustion processes.

This test method is for use in scientific and industrial research.

< ^SCOPE:

1.1 This test method covers the microscopical determination of both the mean maximum and mean random reflectances measured in oil of polished surfaces of vitrinite and other macerals present in coals ranging in rank from lignite to anthracite. This test method can be used to determine the reflectance of other macerals.

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

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

ASTM D2798-11a Referenced Document

• ASTM D121 Standard Terminology of Coal and Coke
• ASTM D2797 Standard Practice for Preparing Coal Samples for Microscopical Analysis by Reflected Light
• ASTM D388 Standard Classification of Coals by Rank

ASTM D2798-11a history

• 2021 ASTM D2798-21 Standard Test Method for Microscopical Determination of the Vitrinite Reflectance of Coal
• 2020 ASTM D2798-20 Standard Test Method for Microscopical Determination of the Vitrinite Reflectance of Coal
• 2019 ASTM D2798-11a(2019) Standard Test Method for Microscopical Determination of the Vitrinite Reflectance of Coal
• 2011 ASTM D2798-11a Standard Test Method for Microscopical Determination of the Vitrinite Reflectance of Coal
• 2011 ASTM D2798-11 Standard Test Method for Microscopical Determination of the Vitrinite Reflectance of Coal
• 2009 ASTM D2798-09a Standard Test Method for Microscopical Determination of the Vitrinite Reflectance of Coal
• 2009 ASTM D2798-09 Standard Test Method for Microscopical Determination of the Vitrinite Reflectance of Coal
• 2006 ASTM D2798-06 Standard Test Method for Microscopical Determination of the Vitrinite Reflectance of Coal
• 2005 ASTM D2798-05 Standard Test Method for Microscopical Determination of the Vitrinite Reflectance of Coal
• 1999 ASTM D2798-99(2004) Standard Test Method for Microscopical Determination of the Reflectance of Vitrinite in a Polished Specimen of Coal
• 1999 ASTM D2798-99 Standard Test Method for Microscopical Determination of the Reflectance of Vitrinite in a Polished Specimen of Coal