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2. Standard method of ash in the analysis sample of coal and coke from coal;American Society for Testing and Materials (ASTM) D3174,2004
3. Standard method of volatile matter in the analysis sample of coal and coke from coal;American Society for Testing and Materials (ASTM) D3175,2004
4. Standard method of total moisture in coal;American Society for Testing and Materials (ASTM) D3302,2004
5. Standard test methods for instrumental determination of carbon, hydrogen, and nitrogen in laboratory samples of coal and coke;American Society for Testing and Materials (ASTM) D5373,2004