“Determination of 2-a ” 中國GB標準檢索結果

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	GB/T 20899.4-2021 （中英文版） Methods for chemical analysis of gold ores—Part 4: Determination of copper content
	GB/T 15596-2021 （中英文版） Plastics—Determination of changes in colour and variations in properties after exposure to glass-filtered solar radiation, natural weathering or laboratory radiation sources
	GB/T 14949.2-2021 （中英文版） Manganese ores—Determination of nickel content—Flame atomic absorption spectrometric method
	GB/T 14949.11-2021 （中英文版） Manganese ores—Determination of carbon content—Gravimetric method and infrared absorption method
	GB/T 14637-2021 （中英文版） Determination of copper,iron and zinc in industrial circulating cooling water and scale—Atomic absorption spectrometric method
	GB/T 14636-2021 （中英文版） Determination of calcium and magnesium in industrial circulating cooling water and scale—Atomic absorption spectrometric method
	GB/T 7739.6-2021 （中英文版） Methods for chemical analysis of gold concentrates—Part 6: Determination of zinc content
	GB/T 7739.5-2021 （中英文版） Methods for chemical analysis of gold concentrates—Part 5: Determination of lead content
	GB/T 7731.5-2021 （中英文版） Ferrotungsten—Determination of silicon content—Silicomolybdenum blue spectrophotometric method
	GB/T 7731.4-2021 （中英文版） Ferrotungsten—Determination of phosphorus content—Phosphorus molybdenum blue spectrophotometric method
	GB/T 7731.1-2021 （中英文版） Ferrotungsten—Determination of tungsten content—Cinchonine gravimetric method and ammonium nitrate gravimetric method
	GB/T 7731.10-2021 （中英文版） Ferrotungsten—Determination of carbon content—Infrared absorption method
	GB/T 6324.11-2021 （中英文版） Test method of organic chemical products—Part 11：Determination of trace arsenic in liquid products—Atomic fluorescence spectrometric method
	GB/T 6288-2021 （中英文版） Determination of particle size for granular molecular sieve
	GB/T 6287-2021 （中英文版） Determination of static adsorbed water for molecular sieve
	GB/T 6286-2021 （中英文版） Determination of bulk density for molecular sieve
	GB/T 6017-2021 （中英文版） Determination of purity and hydrocarbon impurities of butadiene for industrial use—Gas chromatographic method
	GB/T 6015-2021 （中英文版） Determination of trace dimer and residual extraction agent of butadiene for industrial use—Gas chromatographic method
	GB/T 5687.13-2021 （中英文版） Ferrochromium—Determination of chromium, silicon, manganese, titanium, vanadium, iron contents—Wavelength dispersive X-ray fluorescence spectrometry (fused cast bead method)
	GB/T 5211.14-2021 （中英文版） General methods of test for pigments and extenders—Part 14: Determination of residue on sieve—Mechanical flushing procedure
	GB/T 5195.11-2021 （中英文版） Fluorspar—Determination of manganese content—Periodate spectrophotometry and flame atomic absorption spectrometry
	GB/T 2408-2021 （中英文版） Plastics—Determination of burning characteristics—Horizontal and vertical test
	GB/T 1845.2-2021 （中英文版） Plastics—Polyethylene (PE) moulding and extrusion materials—Part 2:Preparation of test specimens and determination of properties
	GB/T 1425-2021 （中英文版） Determination of melting temperature range for precious metals and their alloys—Testing method of thermal analysis
	GB/T 614-2021 （中英文版） Chemical reagent—General method for the determination of refractive index
	GB/T 611-2021 （中英文版） Chemical reagent—General method for the determination of refractive index
	GB/T 223.91-2021 （中英文版） Iron, steel and alloy—Determination of copper—2,2’-Biquinoline spectrophotometric method
	GB/T 223.90-2021 （中英文版） Iron, steel and alloy—Determination of silicon content—Inductively coupled plasma atomic emission spectrometric method
	GB/T 40380.1-2021 （中英文版） Metallic powders—Determination of apparent density and flow rate at elevated temperatures—Part 1: Determination of apparent density at elevated temperatures
	GB/T 40377-2021 （中英文版） Corrosion of metals and alloys—Determination of AC corrosion—Protection criteria

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