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GB/T 34500.6-2026
Chemical analysis methods for rare earth residue and waste water—Part 6: Determination of thallium and vanadium contents—Inductively coupled plasma mass spectrometry
GB/T 47915.1-2026
Chemical analysis methods for rare earth zirconium based compounds—Part 1: Determination of total rare earth content
GB/T 47881-2026
Rare earth-based hydrogen storage alloys—Test method for thermodynamic properties of hydrogenation dehydrogenation reactions
GB/T 47880-2026
Rare earth-based hydrogen storage alloys—Test method for cycle stability of hydrogen adsorption and desorption reactions
GB/T 47896-2026
Methods for measuring high temperature magnetic properties of high coercivity permanent magnet materials
GB/T 47915.2-2026
Chemical analysis methods for rare earth zirconium based compounds—Part 2: Determination of zirconium oxide and hafnium oxide total content—Mandelic acid gravimetric method
GB/T 34500.7-2026
Chemical analysis methods for rare earth residue and waste water—Part 7: Determination of thorium and uranium contents—Inductively coupled plasma mass spectrometry
GB/T 20170.2-2026
Test methods for physical properties of rare earth metals and their compounds—Part 2: Determination of specific surface area of rare earth compounds—Nitrogen adsorption method
GB/T 20170.1-2026
Test methods for physical properties of rare earth metals and their compounds—Part 1: Determination of particle size distribution of rare earth compounds—Laser diffraction method
GB/T 13748.9-2026
Methods for chemical analysis of magnesium and magnesium alloys—Part 9: Determination of iron and silicon content—Spectrophotometric method
GB/T 30076-2026
Silicate phosphors activated by rare earth for LED
GB/T 13748.18-2026
Methods for chemical analysis of magnesium and magnesium alloys—Part 18：Determination of chlorine content—Silver chloride turbidimetric method
GB/T 13748.15-2026
Methods for chemical analysis of magnesium and magnesium alloys—Part 15：Determination of zinc content
GB/T 13748.13-2026
Methods for chemical analysis of magnesium and magnesium alloys—Part 13：Determination of lead, calcium, kalium and sodium content—Flame atomic absorption spectrometric method
GB/T 6609.24-2026
Chemical analysis methods and determination of physical performance of alumina—Part 24: Measurement of the angle of repose and the angle of flow
GB/T 6609.22-2026
Chemical analysis methods and determination of physical performance of alumina—Part 22: Sampling and preparation of test samples
GB/T 6609.13-2026
Chemical analysis methods and determination of physical performance of alumina—Part 13: Determination of calcium oxide content—Flame atomic absorption spectrometric method
GB/T 29999-2026
Integrated treatment specification for acidic wastewater from copper mines
GB/T 6609.5-2026
Chemical analysis methods and determination of physical performance of alumina—Part 5：Determination of sodium oxide and potassium oxide contents
GB/T 16477.2-2026
Chemical analysis methods of rare earth ferrosilicon alloys and rare earth magnesium ferrosilicon alloys—Part 2: Determination of calcium, magnesium, manganese, aluminum, barium, antimony, bismuth, strontium, phosphorus and titanium contents