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GB/T 40903-2021 (中英文版) Textiles—Identification of some animal fibres by DNA analysis method—Cashmere,wool,yak and their blends |
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GB/T 16399-2021 (中英文版) Methods for chemical analysis of clay |
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GB/T 12690.4-2021 (中英文版) Chemical analysis methods for non-rare earth impurities of rare earth metals and their oxides—Part 4: Determination of oxygen and nitrogen contents—Impulse-infrared absorption and impulse-thermal conductivity method |
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GB/T 40798-2021 (中英文版) Chemical analysis method of ion-adsorption rare earth ore—Determination of total rare earth contents—Inductively coupled plasma mass spectrometry |
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GB/T 40795.2-2021 (中英文版) Chemical analysis methods of lanthanum-cerium metals and their compounds—Part 2:Determination of rare earth content |
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GB/T 40795.1-2021 (中英文版) Chemical analysis method of lanthanum-cerium metals and their compounds—Part 1:Determination of cerium content—Ammonium ferrous sulfate titration method |
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GB/T 18115.4-2021 (中英文版) Chemical analysis methods of rare earth impurities in rare earth metals and their oxides -- Part 4: Determination of lanthanum, cerium, praseodymium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium and yt |
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GB/T 12690.7-2021 (中英文版) Chemical analysis methods for non-rare earth impurities of rare earth metals and their oxides—Part 7: Determination of silicon content |
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GB/Z 39124-2020 (中英文版) Method for chemical analysis of lead concentrates—Determination of antimony content—Ce(SO4)2 titration method |
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GB/T 39138.1-2020 (中英文版) Methods for chemical analysis of gold nickel chromium iron silicon boron alloys—Part 1:Determination of gold content—Potentiometric titration using ferrous sulfate |
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GB/T 39138.2-2020 (中英文版) Methods for chemical analysis of gold nickel chromium iron silicon boron alloys—Part 2:Determination of nickel content—Dimethylglyoxime gravimetric method |
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GB/T 39138.3-2020 (中英文版) Methods for chemical analysis of gold nickel chromium iron silicon boron alloys—Part 3:Determination of chromium, iron, silicon and boron contents—Inductively coupled plasma atomic emission spectrometry |
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GB/T 39143-2020 (中英文版) Methods for chemical analysis of gold-arsenic alloys—Determination of arsenic content—Inductively coupled plasma atomic emission spectrometry |
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GB/T 34609.2-2020 (中英文版) Method for chemical analysis of rhodium compounds—Part 2: Determination of silver,gold,platinum...potassium,chromium and silicon contents—Inductively coupled plasma atomic emission spectrometry |
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GB/T 20975.6-2020 (中英文版) Methods for chemical analysis of aluminium and aluminium alloys—Part 6: Determination of cadmium content |
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GB/T 20975.21-2020 (中英文版) Methods for chemical analysis of aluminium and aluminium alloy—Part 21: Determination of calcium content |
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GB/T 20975.17-2020 (中英文版) Methods for chemical analysis of aluminium and aluminium alloys—Part 17: Determination of strontium content |
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GB/T 8151.22-2020 (中英文版) Methods for chemical analysis of zinc concentrates—Part 22: Determination of zinc, copper, lead,iron,aluminium ,calcium and magnesium contents—Wavelength dispersive X-ray fluorescence spectrometric method |
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GB/T 8151.23-2020 (中英文版) Methods for chemical analysis of zinc concentrates—Part 23: Determination of mercury content—Solid sampling and direct mercury analysis method |
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GB/T 20975.37-2020 (中英文版) Methods for chemical analysis of aluminium and aluminium alloys—Part 37:Determination of niobium content |
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GB/T 38904-2020 (中英文版) Methods for elemental analysis of ceramic liquid pigments |
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GB/T 38902-2020 (中英文版) Determination of hollow fiber membrane cross-section dimensions—Image analysis method |
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GB/T 20975.4-2020 (中英文版) Methods for chemical analysis of aluminium and aluminium alloys—Part 4:Determination of iron content |
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GB/T 20975.5-2020 (中英文版) Methods for chemical analysis of aluminium and aluminium alloys—Part 5:Determination of silicon content |
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GB/T 20975.7-2020 (中英文版) Methods for chemical analysis of aluminium and aluminium alloys—Part 7:Determination of manganese content |
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GB/T 20975.9-2020 (中英文版) Methods for chemical analysis of aluminium and aluminium alloys—Part 9:Determination of lithium content—Flame atomic absorption spectrometry |
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GB/T 20975.10-2020 (中英文版) Methods for chemical analysis of aluminium and aluminium alloys—Part 10:Determination of tin content |
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GB/T 20975.12-2020 (中英文版) Methods for chemical analysis of aluminium and aluminium alloys—Part 12: Determination of titanium content |
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GB/T 20975.14-2020 (中英文版) Methods for chemical analysis of aluminium and aluminium alloys—Part 14:Determination of nickel content |
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GB/T 20975.16-2020 (中英文版) Methods for chemical analysis of aluminium and aluminium alloys—Part 16:Determination of magnesium content |
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