Carbonaceous materials for the production of primary aluminium - Pitch for electrodes - Part 1:Determination of water content - Azeotropic distillation(Dean and Stark) method
Carbonaceous materials for the production of primary aluminium - Pitch for electrodes - Part 4:Determination of content of quinoline-insoluble material
Carbonaceous materials for the production of primary aluminium - Pitch for electrodes - Part 2:Determination of softening point by the ring and ball method