Résumé
Weighing of a test portion into a porcelain crucible and ignition in a muffle furnace controlled at a temperature of (550 +/- 25) 0C to a constant mass. Replaces ISO Recommendation R 853/1965.
Weighing of a test portion into a porcelain crucible and ignition in a muffle furnace controlled at a temperature of (550 +/- 25) 0C to a constant mass. Replaces ISO Recommendation R 853/1965.