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GB/T 2678.3-1995
Pulps--Determination of chlorine consumption (Degree of delignification)
GB/T 223.58-1987
Methods for chemical analysis of iron,steel and alloy--The extraction-absorption catalytic polarographic method for the determination of manganese content
GB/T 223.61-1988
Methods for chemical analysis of iron,steel and alloy--The ammonium phosphomolybdate volumetric method for the determination of phosphorus content
GB/T 9792-2003
Conversion coatings on metallic materials--Determination of coating mass per unit area--Gravimetric methods
GB/T 2469-1996
Pyrites and concentrate--Determination of carbon content--Caustic asbestos gravimetric method
GB/T 2923-1995
Determination of ISO speed of black-and-white pictorial still camera negative film/process systems