GB/T 6948-1998
Microscopical determination of the reflectance of vitrinite in coal (English Version)
- Standard No.
- GB/T 6948-1998
- Language
- Chinese, Available in English version
- Release Date
- 1998
- Published By
- General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
- Status
- 2009-03
- Replace By
- GB/T 6948-2008
- Latest
- GB/T 6948-2008
- Scope
- This standard specifies the method for measuring the maximum reflectance and random reflectance of vitrinite of pulverized coal optical sheet under the microscope oil immersion objective lens. It is suitable for the measurement of reflectance of single seam coal of lignite, bituminous coal and anthracite.
GB/T 6948-1998 history
- 2008 GB/T 6948-2008 Method of determining microscopically the reflectance of vitrinite in coal
- 1998 GB/T 6948-1998 Microscopical determination of the reflectance of vitrinite in coal
