90.93 Standard confirmed Jan 31, 2020
ISO
ISO/TC 226 Materials for the production of primary aluminium
International Standard
71.100.10 Materials for aluminium production
Published
A test portion is deated in a tared platinum crucible, in a furnace at 700 degrees centigrade, under oxidizing and specified conditions, to constant mass. The residue is cooles and weighed. The method is applicable to products (tar pitch, petroleum pitch, etc.) producing a quality of ash greater than or equal to 0,05 % (m/m).
PUBLISHED
ISO 8006:1985
90.93
Standard confirmed
Jan 31, 2020