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GB/T 12689.11-2004
The methods for chemical analysis of zinc and zinc alloys--The determination of lanthanum and cerium contents--The tri-bromide arsenazo spectrophoto-metric method
GB/T 12689.10-2004
The methods for chemical analysis of zinc and zinc alloys--The determination of tin content--The phenylfluorone-cetyltrimethyla-mmonium bromide spectrophotometric method
GB/T 9971-2004
Pure iron for raw material
GB/T 5065-2004
Hot-dip lead-tin alloy coated cold rolled carbon steel sheets and strips
GB/T 4296-2004
Inspection method for microstructure of wrought magnesium alloy
GB/T 19446-2004
Specification for electrical contact profiles
GB/T 1422-2004
Iridium powder
GB/T 1421-2004
Rhodium powder
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 6609.16-2004
Chemical analysis methods and determination of physical performance of alumina--Determination of boron trioxide content--Curcumin spectrophotometric method
GB/T 6609.4-2004
Chemical analysis methods and determination of physical performance of alumina--Determination of ferric oxide content--Orthophenanthroline photometric method
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 6609.23-2004
Chemical analysis methods and determination of physical performance of alumina--Preparation andstorage of test samples
GB/T 6609.24-2004
Chemical analysis methods and determination of physical performance of alumina--Measurement of the angle of repose
GB/T 6609.29-2004
Chemical analysismethods and determination of physical performance of alumina--Determination of an absorption index
GB/T 6609.25-2004
Chemical analysismethods and determination of physical performance of alumina--Determination of untamped density
GB/T 6609.3-2004
Chemical analysis methods and determination of physical performance of alumina--Determination of silicon dioxide content--Molybdenum blue photometric method
GB/T 6609.17-2004
Chemical analysis methods and determination of physical performance of alumina--Determination of phosphorus pentoxide content--Molybdenum blue spectrophotometric method