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GB/T 6609.28-2004
Chemical analysis methods and determination of physical performance of alumina--Determination of the fine particle size distribution(less than 60μm)--Method using electroformed sieves
GB/T 6609.12-2004
Chemical analysis methods and determination of physical performance of alumina--Determination of zinc oxide content--Flame atomic absorption spectrophotometricmethod
GB/T 6609.13-2004
Chemical analysis methods and determination of physical performance of alumina--Determination of calcium oxide content--Flame atomic absorption spectrophotometric method
GB/T 6609.11-2004
Chemical analysis methods and determination of physical performance of alumina--Determination of manganous oxide content--Flame atomic absorption spectrophotometric method
GB/T 6609.29-2004
Chemical analysismethods and determination of physical performance of alumina--Determination of an absorption index
GB/T 6609.26-2004
Chemical analysis methods and determination of physical performance of alumina--Determination of absolute density--Pycnometer method
GB/T 6609.22-2004
Chemical analysis methods and determination of physical performance of alumina--Sampling
GB/T 6609.9-2004
Chemical analysis methods and determination of physical performance of alumina--Determination of cupric oxide content--2，9-Dimethyl-1，10 phenanthroline photometric method
GB/T 6609.8-2004
Chemical analysis methods and determination of physical performance of alumina--Determination of chromium sesquioxide content--Diphenyl carbazide photometric method
GB/T 6609.6-2004
Chemical analysis methods and determination of physical performance of alumina--Determination of potassium oxide content--Flame photometric method
GB/T 6609.5-2004
Chemical analysis methods and determination of physical performance of alumina--Determination of sodium oxide content
GB/T 6609.21-2004
Chemical analysis methods and determination of physical performance of alumina--Determination of gallium trioxide content--Butyrhodamine B spectrophotometric method
GB/T 6609.20-2004
Chemical analysis methods and determination of physical performance of alumina--Determination of magnesia content--Flame atomic absorption spectrophotometric method
GB/T 6609.19-2004
Chemical analysis methods and determination of physical performance of alumina--Determination of lithia content--Flame atomic absorption spectrophotometric method
GB/T 6609.10-2004
Chemical analysis methods and determination of physical performance of alumina--Determination of vanadic oxide content--N-benzoyl-N-phenylhydroxylamine extraction photometric method
GB/T 19445-2004
Products of precious metalsand their alloys--Packing，marking，transporting and storing
GB/T 12690.9-2003
Chemical analysis methods for non-rare earth impurities of rare earth metals andtheir oxides--Determination of chlorine content--Silver nitrate turbidimetric method
GB/T 12690.8-2003
Chemical analysis methods for non-rare earth impurities of rare earth metals and their oxides--Determination of sodium content--Flame atomic absorption spectrometric method
GB/T 12690.7-2003
Chemical analysis methods for non-rare earth impurities of rare earth metals and their oxides--Determination of silicon content--Molybdenum blue spectrophotometric method
GB/T 12690.6-2003
Chemical analysis methods for non-rare earth impurities of rare earth metals and their oxides--Determination of iron content--Kalium thiocyanate，1，10-phenanthroline spectrophotometric method