1. Standard Test Method for Forms of Sulfur in Coal;ASTM D2492-02,2012
2. Standard Test Method for Moisture in the Analysis Sample of Coal and Coke;ASTM D3173/D3173M-17a,2017
3. Standard Test Method for Ash in the Analysis Sample of Coal and Coke from Coal;ASTM D3174-12,2018
4. Standard Test Method for Volatile Matter in the Analysis Sample of Coal and Coke;ASTM D3175–-18, 2018,2018
5. Standard Classification of Coals by Rank;ASTM D388-12,2012