NA 062
DIN Standards Committee Materials Testing
Standards
[CURRENT]
DIN 22020-5
DIN 22020-5
Investigations of the raw material in hard-coal-mining - Microscopical examinations of hard coal, coke and briquettes - Part 5: Reflectance measurements on vitrinites
Title (German)
Rohstoffuntersuchungen im Steinkohlenbergbau - Mikroskopische Untersuchungen an Steinkohle, Koks und Briketts - Teil 5: Reflexionsmessungen an Vitriniten