... This part specifies the method for determining the amount of alumina by EDTA volumetric method. This section applies to the determination of the amount of alumina in siliceous refractories. The measurement range (mass fraction) is 0.30% to 35.00%.
GB/T 6901.6-2004 history
2017GB/T 6901-2017 Chemical analysis of silica refractories
2008GB/T 6901-2008 Chemical analysis of silica refractories
2004GB/T 6901.6-2004 Chemical analysis of silica refractories-Part 6:Determination of aluminium oxide-EDTA volumetric method
1986GB/T 6901.6-1986 Silica refractories--Determination of aluminium oxide content--EDTA volumetric method
GB/T 6901.6-2004 Chemical analysis of silica refractories-Part 6:Determination of aluminium oxide-EDTA volumetric method was changed to GB/T 6901-2008 Chemical analysis of silica refractories.