This standard applies to the determination of loss on ignition in clay and high alumina refractories.
GB/T 6900.1-1986 history
2016GB/T 6900-2016 Chemical analysis of alumina-silica refractories
2006GB/T 6900-2006 Chemical analysis of alumina-silica refractories
1986GB/T 6900.1-1986 Fireclay and high-alumina refractories--Determination of loss content on ignition--Gravimetric method
GB/T 6900.1-1986 Fireclay and high-alumina refractories--Determination of loss content on ignition--Gravimetric method was changed to GB/T 6900-2006 Chemical analysis of alumina-silica refractories.