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GB standards are the China national standards; Prefix code GB are Mandatory standards, GB/T are Recommended standards; All products or service must be compliance with GB standards; If you want to export products or services to huge Chinese market, need ensure they are meet the requirements of GB china national standards;  We provide Chinese GB standards and English version GB standards  Lookup, Translate, Download, Imported Commodity GB standards Testing and Compliance review services.
  •  China "Chemical" GB Standards List:
  • Standard  Code Standard Title Standard Class Order
    GB/T 1289-2022 Chemical Reagent Sodium Oxalate
    化学试剂 草酸钠
    China National Standards
    Chemical

    English PDF
    GB/T 17657-2022 Test methods for physical and Chemical properties of wood-based panels and veneered wood-based panels
    人造板及饰面人造板理化性能试验方法
    China National Standards
    Chemical

    English PDF
    GB/T 42284.5-2022 Road vehicles - Environmental conditions and tests for electrical and electronic equipment used in electric vehicle drive systems - Part 5: Chemical loads
    道路车辆 电动汽车驱动系统用电气及电子设备的环境条件和试验 第5部分:化学负荷
    China National Standards
    Chemical

    English PDF
    GB/T 16886.19-2022 Biological evaluation of medical devices - Part 19: PhysicoChemical, morphological and surface characterization of materials
    医疗器械生物学评价 第19部分:材料物理化学、形态学和表面特性表征
    China National Standards
    Chemical

    English PDF
    GB/T 33057-2022 Sampling method for waste Chemicals
    废弃化学品取样制样方法
    China National Standards
    Chemical

    English PDF
    GB/T 16886.18-2022 Biological evaluation of medical devices - Part 18: Chemical characterization of medical device materials in the risk management process
    医疗器械生物学评价 第18部分:风险管理过程中医疗器械材料的化学表征
    China National Standards
    Chemical

    English PDF
    GB/T 42164-2022 Leather - Chemical tests - Determination of hexavalent chromium content under heat aging conditions
    皮革 化学试验 热老化条件下六价铬含量的测定
    China National Standards
    Chemical

    English PDF
    GB/T 42078-2022 Guidelines for the development and construction of Chemical parks
    化工园区开发建设导则
    China National Standards
    Chemical

    English PDF
    GB/T 22933-2022 Leather and furs - Chemical tests - Determination of free fatty acids
    皮革和毛皮 化学试验 游离脂肪酸的测定
    China National Standards
    Chemical

    English PDF
    GB/T 25915.15-2022 Clean rooms and related controlled environments - Part 15: Suitability assessment of equipment and materials by concentration of gaseous Chemicals
    洁净室及相关受控环境 第15部分: 按气态化学物浓度评定设备及材料的适用性
    China National Standards
    Chemical

    English PDF
    GB/T 25915.13-2022 Cleanrooms and related controlled environments - Part 13: Surface cleaning to particle and Chemical cleanliness requirements
    洁净室及相关受控环境 第13部分:达到粒子和化学洁净度要求的表面清洁
    China National Standards
    Chemical

    English PDF
    GB/T 3396-2022 Determination of trace oxygen in ethylene and propylene for industrial use - ElectroChemical method
    工业用乙烯、丙烯中微量氧的测定 电化学法
    China National Standards
    Chemical

    English PDF
    GB/T 42300-2022 Safety risk assessment specification for fine Chemical reaction
    精细化工反应安全风险评估规范
    China National Standards
    Chemical

    English PDF
    GB/T 41963-2022 Technical requirements for classification and collection of Chemicals used in waste vehicles
    废弃车用化学品分类与收集技术要求
    China National Standards
    Chemical

    English PDF
    GB/T 20899.8-2022 Methods for Chemical analysis of gold ores - Part 8: Determination of sulfur content
    金矿石化学分析方法 第8部分:硫量的测定
    China National Standards
    Chemical

    English PDF
    GB/T 20899.7-2022 Methods for Chemical analysis of gold ores - Part 7: Determination of iron content
    金矿石化学分析方法 第7部分:铁量的测定
    China National Standards
    Chemical

    English PDF
    GB/T 7739.8-2022 Methods for Chemical analysis of gold concentrates - Part 8: Determination of sulfur content
    金精矿化学分析方法 第8部分:硫量的测定
    China National Standards
    Chemical

    English PDF
    GB/T 7739.7-2022 Methods for Chemical analysis of gold concentrates - Part 7: Determination of iron content
    金精矿化学分析方法 第7部分:铁量的测定
    China National Standards
    Chemical

    English PDF
    GB/T 42288-2022 Safety regulations for electroChemical energy storage power stations
    电化学储能电站安全规程
    China National Standards
    Chemical

    English PDF
    GB/T 26416.5-2022 Methods for Chemical analysis of rare earth iron alloys - Part 5: Determination of oxygen content - Pulse-infrared absorption method
    稀土铁合金化学分析方法 第5部分:氧含量的测定 脉冲-红外吸收法
    China National Standards
    Chemical

    English PDF
    GB/T 26416.4-2022 Methods for Chemical analysis of rare earth iron alloys - Part 4: Determination of iron content - Potassium dichromate titration method
    稀土铁合金化学分析方法 第4部分:铁量的测定 重铬酸钾滴定法
    China National Standards
    Chemical

    English PDF
    GB/T 26416.3-2022 Chemical analysis methods of rare earth ferroalloys - Part 3: Determination of calcium, magnesium, aluminum, nickel, manganese content - Inductively coupled plasma emission spectrometry
    稀土铁合金化学分析方法 第3部分:钙、镁、铝、镍、锰量的测 定 电感耦合等离子体发射光谱法
    China National Standards
    Chemical

    English PDF
    GB/T 26416.2-2022 Methods for Chemical analysis of rare earth ferroalloys - Part 2: Determination of rare earth impurity content - Inductively coupled plasma emission spectrometry
    稀土铁合金化学分析方法 第2部分:稀土杂质含量的测定 电感耦合等离子体发射光谱法
    China National Standards
    Chemical

    English PDF
    GB/T 26416.1-2022 Chemical Analysis Methods of Rare Earth Ferroalloys Part 1: Determination of Total Rare Earth
    稀土铁合金化学分析方法 第1部分:稀土总量的测定
    China National Standards
    Chemical

    English PDF
    GB/T 13747.26-2022 Methods for Chemical analysis of zirconium and zirconium alloys - Part 26: Determination of alloys and impurity elements - Inductively coupled plasma atomic emission spectrometry
    锆及锆合金化学分析方法 第26部分:合金及杂质元素的测定 电感耦合等离子体原子发射光谱法
    China National Standards
    Chemical

    English PDF
    GB/T 37211.3-2022 Methods for Chemical analysis of germanium metal - Part 3: Determination of trace impurity elements - Glow discharge mass spectrometry
    金属锗化学分析方法 第3部分:痕量杂质元素的测定 辉光放电质谱法
    China National Standards
    Chemical

    English PDF
    GB/T 42260-2022 Lithium iron phosphate electroChemical performance test cycle life test method
    磷酸铁锂电化学性能测试 循环寿命测试方法
    China National Standards
    Chemical

    English PDF
    GB/T 42161-2022 ElectroChemical Performance Test of Lithium Iron Phosphate Test Method for First Discharge Specific Capacity and First Charge and Discharge Efficiency
    磷酸铁锂电化学性能测试 首次放电比容量及首次充放电效率测试方法
    China National Standards
    Chemical

    English PDF
    GB/T 2910.4-2022 Textiles - Quantitative Chemical analysis - Part 4: Mixtures of certain protein fibers with certain other fibers (hypochlorite method)
    纺织品 定量化学分析 第4部分:某些蛋白质纤维与某些其他纤维的混合物(次氯酸盐法)
    China National Standards
    Chemical

    English PDF
    GB/T 14352.24-2022 Methods for Chemical analysis of tungsten ore and molybdenum ore - Part 24: Determination of germanium content - Inductively coupled plasma mass spectrometry
    钨矿石、钼矿石化学分析方法 第24部分:锗含量的测定 电感耦合等离子体质谱法
    China National Standards
    Chemical

    English PDF
    GB/T 12690.1-2022 Chemical analysis methods for non-rare earth impurities in rare earth metals and their oxides—Part 1: Determination of carbon and sulfur content—High frequency-infrared absorption method
    稀土金属及其氧化物中非稀土杂质化学分析方法 第1部分:碳、硫量的测定 高频-红外吸收法
    China National Standards
    Chemical

    English PDF
    GB/T 42273-2022 Zirconium compound Chemical analysis method Calcium, hafnium, titanium, sodium, iron, chromium, cadmium, zinc, manganese, copper, nickel, lead content determination Inductively coupled plasma atomic emission spectrometry
    锆化合物化学分析方法 钙、铪、钛、钠、铁、铬、镉、锌、锰、铜、镍、铅含量的测定 电感耦合等离子体原子发射光谱法
    China National Standards
    Chemical

    English PDF
    GB 15603-2022 General rules for warehouse storage of hazardous Chemicals
    危险化学品仓库储存通则
    China National Standards
    Chemical

    English PDF
    GB/T 41898-2022 Determination of corrosion resistance and compactness of coatings on inner walls of food metal containers-electroChemical method
    食品金属容器内壁涂覆层耐蚀力和致密性的测定 电化学法
    China National Standards
    Chemical

    English PDF
    GB/T 41725-2022 Guidelines for Establishing Limits of Chemical Substances in Consumer Products
    消费品中化学物质限量制定导则
    China National Standards
    Chemical

    English PDF
    GB/T 6488-2022 Liquid Chemical products - Determination of refractive index
    液体化工产品 折光率的测定
    China National Standards
    Chemical

    English PDF
    GB/T 14233.1-2022 Test methods for medical infusion, blood transfusion and injection equipment - Part 1: Chemical analysis methods
    医用输液、输血、注射器具检验方法 第1部分:化学分析方法
    China National Standards
    Chemical

    English PDF
    GB/T 38265.17-2022 Soldering flux test methods - Part 17: Surface insulation resistance comb test and electroChemical migration test for flux residues
    软钎剂试验方法 第17部分:钎剂残留物的表面绝缘电阻梳刷试验和电化学迁移试验
    China National Standards
    Chemical

    English PDF
    GB/T 41769-2022 CdZnTe Chemical analysis method - Determination of zinc and cadmium content - Inductively coupled plasma atomic emission spectrometry
    碲锌镉化学分析方法 锌和镉含量的测定 电感耦合等离子体原子发射光谱法
    China National Standards
    Chemical

    English PDF
    GB/T 13747.18-2022 Methods for Chemical analysis of zirconium and zirconium alloys - Part 18: Determination of vanadium content - Benzoylphenyl hydroxylamine spectrophotometry and inductively coupled plasma atomic emission spectrometry
    锆及锆合金化学分析方法 第18部分:钒含量的测定 苯甲酰苯基羟胺分光光度法和电感耦合等离子体原子发射光谱法
    China National Standards
    Chemical

    English PDF
    GB/T 13747.10-2022 Methods for Chemical analysis of zirconium and zirconium alloys - Part 10: Determination of tungsten content - Thiocyanate spectrophotometry and inductively coupled plasma atomic emission spectrometry
    锆及锆合金化学分析方法 第10部分:钨含量的测定 硫氰酸盐分光光度法和电感耦合等离子体原子发射光谱法
    China National Standards
    Chemical

    English PDF
    GB/T 13747.9-2022 Methods for Chemical analysis of zirconium and zirconium alloys - Part 9: Determination of magnesium content - flame atomic absorption spectrometry and inductively coupled plasma atomic emission spectrometry
    锆及锆合金化学分析方法 第9部分:镁含量的测定 火焰原子吸收光谱法和电感耦合等离子体原子发射光谱法
    China National Standards
    Chemical

    English PDF
    GB/T 6150.17-2022 Methods for Chemical analysis of tungsten concentrates - Part 17: Determination of antimony content - Atomic fluorescence spectrometry
    钨精矿化学分析方法 第17部分:锑含量的测定 原子荧光光谱法
    China National Standards
    Chemical

    English PDF
    GB/T 6150.13-2022 Methods for Chemical analysis of tungsten concentrates - Part 13: Determination of arsenic content - Atomic fluorescence spectrometry and DDTC-Ag spectrophotometry
    钨精矿化学分析方法 第13部分:砷含量的测定 原子荧光光谱法和DDTC-Ag分光光度法
    China National Standards
    Chemical

    English PDF
    GB/T 6150.2-2022 Methods for Chemical analysis of tungsten concentrates - Part 2: Determination of tin content - Potassium iodate titration and inductively coupled plasma atomic emission spectrometry
    钨精矿化学分析方法 第2部分:锡含量的测定 碘酸钾滴定法和电感耦合等离子体原子发射光谱法
    China National Standards
    Chemical

    English PDF
    GB/T 4734-2022 Chemical analysis methods of daily-use ceramic materials and products
    日用陶瓷材料及制品化学分析方法
    China National Standards
    Chemical

    English PDF
    GB/T 41800-2022 Information technology-sensor network-technical requirements for storage safety monitoring system of explosive hazardous Chemicals
    信息技术 传感器网络 爆炸危险化学品贮存安全监测系统技术要求
    China National Standards
    Chemical

    English PDF
    GB/T 41693-2022 Guidelines for the Evaluation and Determination of Chemical Substances of Very High Concern
    高关注化学物质评估判定导则
    China National Standards
    Chemical

    English PDF
    GB/T 41692-2022 Chemicals Rare goby larvae growth test
    化学品 稀有鮈鲫幼体生长试验
    China National Standards
    Chemical

    English PDF
    GB/T 41691-2022 Chemicals - Single exposure toxicity test for bee larvae
    化学品 蜜蜂幼虫单次暴露毒性试验
    China National Standards
    Chemical

    English PDF
    GB/Z 27426-2022 Guidelines for monitoring the validity of Chemical analysis laboratory results
    化学分析实验室结果有效性监控指南
    China National Standards
    Chemical

    English PDF
    GB/T 11417.7-2012 Ophthalmic optics - Contact lenses - Part 7: Test methods for physical and Chemical properties "No. 1 Amendment"
    眼科光学 接触镜 第7部分: 理化性能试验方法《第1号修改单》
    China National Standards
    Chemical

    English PDF
    GB/T 41622-2022 Chemicals - Hornet acute oral toxicity test
    化学品 大黄蜂急性经口毒性试验
    China National Standards
    Chemical

    English PDF
    GB/T 41671-2022 Chemical fibers - Determination of solvent residues
    化学纤维 溶剂残留量的测定
    China National Standards
    Chemical

    English PDF
    GB/T 41564-2022 Textiles - Quantitative Chemical analysis - Blends of aramid fibers with certain other fibers
    纺织品 定量化学分析 芳香族聚酰胺纤维与某些其他纤维的混合物
    China National Standards
    Chemical

    English PDF
    GB/T 21796-2022 Chemicals Activated sludge respiration inhibition test
    化学品 活性污泥呼吸抑制试验
    China National Standards
    Chemical

    English PDF
    GB/T 21607-2022 Chemicals - Generation toxicity test method
    化学品 一代繁殖毒性试验方法
    China National Standards
    Chemical

    English PDF
    GB/T 41623-2022 Chemicals Acute oral toxicity test for birds
    化学品 鸟类急性经口毒性试验
    China National Standards
    Chemical

    English PDF
    GB/T 21604-2022 Chemicals Acute skin irritation/corrosion test method
    化学品 急性皮肤刺激性/腐蚀性试验方法
    China National Standards
    Chemical

    English PDF
    GB/T 21606-2022 Chemicals Acute dermal toxicity test method
    化学品 急性经皮毒性试验方法
    China National Standards
    Chemical

    English PDF
    GB/T 41667-2022 Chemical Soil column leaching test
    化学品 土壤柱淋溶试验
    China National Standards
    Chemical

    English PDF
    GB/T 41668-2022 Chemicals - Determination of release rate of preservative treated wood to the environment
    化学品 防腐处理的木材向环境释放速率的测定方法
    China National Standards
    Chemical

    English PDF
    GB/T 14344-2022 Test method for tensile properties of Chemical fiber filaments
    化学纤维 长丝拉伸性能试验方法
    China National Standards
    Chemical

    English PDF
    GB/T 14338-2022 Test method for crimp properties of Chemical staple fibers
    化学纤维 短纤维卷曲性能试验方法
    China National Standards
    Chemical

    English PDF
    GB/T 14337-2022 Test method for tensile properties of Chemical staple fibers
    化学纤维 短纤维拉伸性能试验方法
    China National Standards
    Chemical

    English PDF
    GB/T 41483-2022 General technical requirements of liquid hazardous Chemical safety inspection instrument based on dielectric constant technology
    基于介电常数技术的液态危险化学品安全检查仪通用技术要求
    China National Standards
    Chemical

    English PDF
    GB/T 41418-2022 Quantitative Chemical analysis of textiles mixtures of meta aromatic polyamide fibers and para aromatic polyamide fibers (lithium chloride / N, N-Dimethylacetamide method)
    纺织品 定量化学分析 间位芳香族聚酰胺纤维与对位芳香族聚酰胺纤维的混合物(氯化锂/N,N-二甲基乙酰胺法)
    China National Standards
    Chemical

    English PDF
    GB/T 41417-2022 Textiles -- Quantitative Chemical analysis -- mixtures of polyaryloxadiazole fibers and some other fibers
    纺织品 定量化学分析 聚芳噁二唑纤维与某些其他纤维的混合物
    China National Standards
    Chemical

    English PDF
    GB/T 41394-2022 Functional safety requirements for anti overflow system of storage tank of explosive hazardous Chemicals
    爆炸危险化学品储罐防溢系统功能安全要求
    China National Standards
    Chemical

    English PDF
    GB 30871-2022 Safety specifications of special work in hazardous Chemicals enterprises
    危险化学品企业特殊作业安全规范
    China National Standards
    Chemical

    English PDF
    GB/T 6609.2-2022 Chemical analysis methods and determination of physical performance of alumina—Part 2: Determination of loss of mass at 300 ℃ and 1000 ℃
    氧化铝化学分析方法和物理性能测定方法 第2部分:300 ℃和1000 ℃质量损失的测定
    China National Standards
    Chemical

    English PDF
    GB/T 29341-2022 Calcium aluminate for water treatment Chemicals
    水处理剂用铝酸钙
    China National Standards
    Chemical

    English PDF
    GB/T 22627-2022 Water treatment Chemicals—Polyaluminium chloride
    水处理剂 聚氯化铝
    China National Standards
    Chemical

    English PDF
    GB/T 6609.30-2022 Chemical analysis methods and determination of physical performance of alumina—Part 30: Determination of trace elements—Wavelength dispersive X-ray fluorescence spectrometric method
    氧化铝化学分析方法和物理性能测定方法 第30部分:微量元素含量的测定 波长色散X射线荧光光谱法
    China National Standards
    Chemical

    English PDF
    GB/T 1819.1-2022 Methods for Chemical analysis of tin concentrates—Part 1:Determination of moisture content—Heat drying method
    锡精矿化学分析方法 第1部分:水分含量的测定 热干燥法
    China National Standards
    Chemical

    English PDF
    GB/T 5231-2022 Designation and Chemical composition of wrought copper and copper alloys
    加工铜及铜合金牌号和化学成分
    China National Standards
    Chemical

    English PDF
    GB/T 3286.11-2022 Methods for Chemical analysis of limestone and dolomite—Part 11: Determination of calcium oxide, magnesium oxide, silicon dioxide, aluminium oxide and iron oxide content—Wavelength dispersive X-ray fluorescence spectrometry (Fused cast bead method)
    石灰石及白云石化学分析方法 第11部分:氧化钙、氧化镁、二氧化硅、氧化铝及氧化铁含量的测定 波长色散X射线荧光光谱法(熔铸玻璃片法)
    China National Standards
    Chemical

    English PDF
    GB/T 8152.16-2022 Methods for Chemical analysis of lead concentrates - Part 16: Determination of calcium oxide content - Flame atomic absorption spectrometry
    铅精矿化学分析方法 第16部分:氧化钙含量的测定 火焰原子吸收光谱法
    China National Standards
    Chemical

    English PDF
    GB/T 41312.1-2022 Test method for permeability of Chemical equipment - Part 1: Graphite and its lining equipment
    化工用设备渗透性检测方法 第1部分:石墨及其衬里设备
    China National Standards
    Chemical

    English PDF
    GB 51428-2021 Standard for fire protection design of coal Chemical engineering
    煤化工工程设计防火标准
    China National Standards
    Chemical

    English PDF
    GB/T 5121.28-2021 Methods for Chemical analysis of copper and copper alloys—Part 28:Determination of chromium,iron,manganese,cobalt,nickel,zinc,arsenic,selenium,silver,cadmium,tin,antimony,tellurium,lead and bismuth content—Inductively coupled plasma-mass spectrometry
    铜及铜合金化学分析方法 第28部分:铬、铁、锰、钴、镍、锌、砷、硒、银、镉、锡、锑、碲、铅和铋含量的测定 电感耦合等离子体质谱法
    China National Standards
    Chemical

    English PDF
    GB/T 41073-2021 Surface Chemical analysis -- Electron spectroscopies -- Minimum reporting requirements for peak fitting in X-ray photoelectron spectroscopy
    表面化学分析 电子能谱 X射线光电子能谱峰拟合报告的基本要求
    China National Standards
    Chemical

    English PDF
    GB/T 41072-2021 Surface Chemical analysis -- Electron spectroscopies -- Guidelines for ultraviolet photoelectron spectroscopy analysis
    表面化学分析 电子能谱 紫外光电子能谱分析指南
    China National Standards
    Chemical

    English PDF
    GB/T 41039-2021 The general rules of determing designed coal and checked coal in modern coal Chemical technology
    现代煤化工项目设计煤种和校核煤种确定通则
    China National Standards
    Chemical

    English PDF
    GB/T 31428-2021 Vocabulary relating to coal Chemical technology
    煤化工术语
    China National Standards
    Chemical

    English PDF
    GB/T 29732-2021 Surface Chemical analysis—Medium resolution auger electron spectrometers—Calibration of energy scales for elemental analysis
    表面化学分析 中等分辨俄歇电子能谱仪 元素分析用能量标校准
    China National Standards
    Chemical

    English PDF
    GB/T 41064-2021 Surface Chemical analysis—Depth profiling—Method for sputter rate determination in X-ray photoelectron spectroscopy, Auger electron spectroscopy and secondary-ion mass spectrometry sputter depth profiling using single and multi-layer thin films
    表面化学分析 深度剖析 用单层和多层薄膜测定X射线光电子能谱、俄歇电子能谱和二次离子质谱中深度剖析溅射速率的方法
    China National Standards
    Chemical

    English PDF
    GB/T 18916.10-2021 Norm of water intake—Part 10:Chemical pharmaceutical products
    取水定额 第10部分:化学制药产品
    China National Standards
    Chemical

    English PDF
    GB/T 23251-2021 Guideline for coal used in coal Chemical technology
    煤化工用煤技术导则
    China National Standards
    Chemical

    English PDF
    GB/T 41007-2021 Consumer product safety—Guidelines for characterization and exposure assessment of Chemical hazard
    消费品安全 化学危害表征和暴露评估指南
    China National Standards
    Chemical

    English PDF
    GB/T 41005-2021 Consumer products safety- General rules on Chemical hazards risk assessment
    消费品安全 化学危害风险评估通则
    China National Standards
    Chemical

    English PDF
    GB 16994.2-2021 Safety requirements for port operation—Part 2: PetroChemical storage area
    港口作业安全要求 第2部分:石油化工库区
    China National Standards
    Chemical

    English PDF
    GB 16994.1-2021 Safety requirements for port operation—Part 1: Oil & gas and Chemical terminal
    港口作业安全要求 第1部分:油气化工码头
    China National Standards
    Chemical

    English PDF
    GB/T 41086-2021 General technical requirements for hazardous Chemicals security inspection equipments based on Raman spectrometry
    基于拉曼光谱技术的危险化学品安全检查设备通用技术要求
    China National Standards
    Chemical

    English PDF
    GB/T 40980-2021 Determination of reducing sugar in bioChemical products—High-performance liquid chromatography with pre-column derivatization
    生化制品中还原糖的测定 柱前衍生高效液相色谱法
    China National Standards
    Chemical

    English PDF
    GB/T 40640.3-2021 Informationalized management of Chemicals—Part 3:Electronic label application
    化学品管理信息化 第3部分:电子标签应用
    China National Standards
    Chemical

    English PDF
    GB/T 12690.8-2021 Chemical analysis methods for non-rare earth impurities of rare earth metals and their oxides—Part 8:Determination of sodium content
    稀土金属及其氧化物中非稀土杂质化学分析方法 第8部分:钠量的测定
    China National Standards
    Chemical

    English PDF
    GB/T 22930.2-2021 Leather and fur—Chemical determination of metal content—Part 2:Total metal content
    皮革和毛皮 金属含量的化学测定 第2部分:金属总量
    China National Standards
    Chemical

    English PDF
    GB/T 22930.1-2021 Leather and fur—Chemical determination of metal content—Part 1:Extractable metals
    皮革和毛皮 金属含量的化学测定 第1部分:可萃取金属
    China National Standards
    Chemical

    English PDF
    GB/T 18115.4-2021 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
    稀土金属及其氧化物中稀土杂质化学分析方法 第4部分:钕中镧、铈、镨、钐、铕、钆、铽、镝、钬、铒、铥、镱、镥和钇量的测定
    China National Standards
    Chemical

    English PDF

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