SN/T 0481.2-1995 Method for inspection of bauxite for export.Determination of silicon dioxide content--Molybdenumbule spectrophotometric method1995-09-06 (English Version)
2011SN/T 0481.2-2011 Inspection of bauxite for import and export.Part 2:Determination of silicon dioxide content Molybdenum blue spectrophotometric method
1995SN/T 0481.2-1995 Method for inspection of bauxite for export.Determination of silicon dioxide content--Molybdenumbule spectrophotometric method1995-09-06