This part specifies the method for the photometric determination of the amount of alumina by chrome azure S. This part is applicable to the determination of the amount of alumina in siliceous refractories, and the determination range (mass fraction) is 0.05% to 0.50%.
GB/T 6901.5-2004 history
2017GB/T 6901-2017 Chemical analysis of silica refractories
2008GB/T 6901-2008 Chemical analysis of silica refractories
2004GB/T 6901.5-2004 Chemical analysis of silica refractories-Part 5:Determination of aluminium oxide-Chromazurol S photometric method
1986GB/T 6901.5-1986 Silica refractories--Determination of aluminium oxide content--Chromazurol S photometric method
GB/T 6901.5-2004 Chemical analysis of silica refractories-Part 5:Determination of aluminium oxide-Chromazurol S photometric method was changed to GB/T 6901-2008 Chemical analysis of silica refractories.