Standard
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AS 2856.3-2000
[Current]Coal petrography, Part 3: Methods for microscopical determination of the reflectance of coal macerals
Sets out method for the microscopical determination of the maximum and random reflectance in oil of polished surfaces of coal macerals.
Published: 13/04/2000
Pages: 14
Table of contents
Cited references
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Table of contents
Header
About this publication
PREFACE
FOREWORD
1 SCOPE
2 REFERENCED DOCUMENT
3 DEFINITIONS
4 PRINCIPLE
5 MATERIALS
5.1 Polished block
5.2 Immersion oil
5.3 Calibration standard
5.3.1 Reflectance standards
5.3.2 Zero standard
6 APPARATUS
7 PROCEDURE
7.1 General
7.2 Setting up the apparatus
7.2.1 Starting procedures
7.2.2 Adjusting the microscope for random or maximum reflectance measurements
7.2.3 Setting the illumination
7.2.4 Setting microscope alignment
7.3 Checking the reliability and calibration of the apparatus
7.3.1 Checking the stability of the apparatus
7.3.2 Checking the variation in the reading on rotating a reflectance standard on the stage
7.3.3 Correcting for parasitic reflections and photomultiplier dark current
7.3.4 Checking linearity of the signal from the photomultiplier
7.3.5 Calibration of the apparatus
7.4 Specimen preparation
7.5 Measurement of the reflectance
7.5.1 General
7.5.2 Procedure for the measurement of the maximum reflectance of vitrinite in oil
7.5.3 Procedure for the measurement of the random reflectance of vitrinite in oil
8 CALCULATIONS
8.1 General
8.2 Reporting of results
9 PRECISION OF RESULTS
10 TEST REPORT
APPENDIX A
A1 SCOPE
A2 CALCULATION OF MEAN AND STANDARD DEVIATION FROM UNGROUPED DATA
APPENDIX B
Cited references in this standard
[Current]
Coal petrography, Part 1: Preparation of coal samples for incident light microscopy
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