1. Standard Test Method for Forms of Sulfur in Coal;ASTM Standard D2492-02,2002
2. Standard Practice for Preparing Coal Samples for Microscopical Analysis by Reflected Light;ASTM Standard D2797/D2797M-11a,2011
3. Standard Test Method for Microscopical Determination of the Vitrinite Reflectance of Coal;ASTM Standard D2798-11a,2011
4. Test Method for Moisture in the Analysis Sample of Coal and Coke;ASTM Standard D3173-11,2011
5. Annual Book of ASTM Standards. Test Method for Ash in the Analysis Sample of Coal and Coke;ASTM Standard D3174-11,2011