Published
Brown coals are classified in this International Standard according to the following properties: total moisture content calculated on the ash-free basis; tar hiels calculated on the dry, ash-free basis. In tables class numbers, group number and code numbers of brown coal types are given.
PUBLISHED
ISO 2950:1974
90.92
Standard to be revised
Aug 21, 2024
IN_DEVELOPMENT
ISO/FDIS 2950
Brown coals and lignites — Classification by types on the basis of total moisture content and tar yield
60.60 Standard published