Carbonaceous materials for the production of aluminium — Pitch for electrodes — Determination of sulfur content by the bomb method
NORMA vydaná dňa 15.12.1988
Označenie normy: ISO 9055:1988
Dátum vydania normy: 15.12.1988
Počet strán: 4
Približná hmotnosť: 12 g (0.03 libier)
Krajina: Medzinárodná technická norma
Kategória: Technické normy ISO
Description / Abstract: A sample is oxidized by combustion in a bomb containing oxygen under pressure. The sulphur is gravimetrically determined in the bomb washings in the form of barium sulfate. The method is applicable to pitches of both coal ta and petroleum origin, provided that they contain at least 0,1 % (m/m) sulfur.