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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. |
| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 41435-2022 |
Determination of boric acid and borate content in toy materials inductively coupled plasma mass spectrometry 玩具材料中硼酸和硼酸盐含量的测定 电感耦合等离子体质谱法 |
China National Standards content |
 English PDF |
| GB/T 6730.60-2022 |
Iron ores - Determination of nickel content - Flame atomic absorption spectrometric method 铁矿石 镍含量的测定 火焰原子吸收光谱法 |
China National Standards content |
English PDF |
| GB/T 6730.5-2022 |
Iron ores -- Determination of total iron content -- Titrimetric method after titanium trichloride reduction 铁矿石 全铁含量的测定 三氯化钛还原后滴定法 |
China National Standards content |
English PDF |
| GB/T 41497-2022 |
Vanadium, iron, vanadium, silicon, phosphorus, manganese, aluminum and iron determination of content wavelength dispersive X-ray fluorescence spectrometric method 钒铁 钒、硅、磷、锰、铝、铁含量的测定 波长色散X射线荧光光谱法 |
China National Standards content |
English PDF |
| GB/T 22459.6-2022 |
Refractory mortars—Part 6: Determination of moisture content of ready-mixed mortars 耐火泥浆 第6部分：预搅拌泥浆含水量试验方法 |
China National Standards content |
English PDF |
| GB/T 4333.8-2022 |
Ferrosilicon—Determination of calcium content—Flame atomic absorption spectrometry 硅铁 钙含量的测定 火焰原子吸收光谱法 |
China National Standards content |
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 content |
English PDF |
| GB/T 24581-2022 |
Test method for Ⅲ and Ⅴ impurities content in single crystal silicon—Low temperature FT-IR analysis method 硅单晶中III、V族杂质含量的测定 低温傅立叶变换红外光谱法 |
China National Standards content |
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 content |
English PDF |
| GB/T 26982-2022 |
Determination of wax content in crude oil 原油蜡含量的测定 |
China National Standards content |
English PDF |
| GB/T 41404-2022 |
Determination of platinum content in platinum alloys Spark atomic emission spectrometry (subtraction method) 铂合金中铂含量的测定 火花原子发射光谱法（差减法） |
China National Standards content |
English PDF |
| GB/T 41330-2022 |
Analysis method of boiler water and cooling water Determination of trace copper, iron, sodium, calcium, magnesium content Inductively coupled plasma mass spectrometry (ICP-MS) method 锅炉用水和冷却水分析方法 痕量铜、铁、钠、钙、镁含量的测定 电感耦合等离子体质谱(ICP-MS)法 |
China National Standards content |
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 content |
English PDF |
| GB/T 41366-2022 |
Livestock and poultry meat quality detection Determination of moisture, protein and fat content Near infrared method 畜禽肉品质检测 水分、蛋白质、脂肪含量的测定 近红外法 |
China National Standards content |
English PDF |
| GB/T 41322-2022 |
Cemented carbides - Determination of silicon content in cobalt powder - Spectrophotometric method 硬质合金 钴粉中硅量的测定 分光光度法 |
China National Standards content |
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 content |
English PDF |
| GB/T 41964-2022 |
Photography Washing Waste Liquid Determination of Ammonia Nitrogen content (Micro-diffusion Method) 摄影 冲洗废液 氨态氮含量的测定 (微扩散法) |
China National Standards content |
English PDF |
| GB/T 41965-2022 |
Photography Flushing Waste Liquid Determination of Total content of Ammonia Nitrogen (Micro-diffusion Kjeldahl Nitrogen Method) 摄影 冲洗废液 氨态氮总含量的测定 (微扩散凯氏氮法) |
China National Standards content |
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 content |
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 content |
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 content |
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 content |
English PDF |
| GB/T 20002.6-2022 |
Guidelines for writing specific content in the standard Part 6: Addressing the needs of MSMEs 标准中特定内容的编写指南 第6部分：涉及中小微型企业需求 |
China National Standards content |
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 content |
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 content |
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 content |
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 content |
English PDF |
| GB/T 6434-2022 |
Determination of Crude Fiber content in Feed 饲料中粗纤维的含量测定 |
China National Standards content |
English PDF |
| GB/T 5686.7-2022 |
Ferromanganese, manganese silicon alloy, ferromanganese nitride and metal manganese Determination of sulfur content Infrared absorption method and combustion neutralization titration method 锰铁、锰硅合金、氮化锰铁和金属锰 硫含量的测定 红外线吸收法和燃烧中和滴定法 |
China National Standards content |
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 content |
English PDF |
| GB/T 11987-2022 |
Surfactants - Industrial alkane sulfonates - Determination of total alkane sulfonate content 表面活性剂 工业烷烃磺酸盐 总烷烃磺酸盐含量的测定 |
China National Standards content |
English PDF |
| GB/T 42022-2022 |
Essential oils - Determination of water content - Karl Fischer method 精油 水分含量的测定 卡尔费休法 |
China National Standards content |
English PDF |
| GB/T 41953-2022 |
Paints and varnishes - Determination of moisture content in coatings - Gas chromatography 色漆和清漆 涂料中水分含量的测定 气相色谱法 |
China National Standards content |
English PDF |
| GB/T 38812.4-2022 |
Direct reduced iron - Determination of metallic iron content - Bromine-methanol titration 直接还原铁 金属铁含量的测定 溴-甲醇滴定法 |
China National Standards content |
English PDF |
| GB/T 41946-2022 |
Rubber - Determination of total sulfur content - Ion chromatography 橡胶 全硫含量的测定 离子色谱法 |
China National Standards content |
English PDF |
| GB/T 41945-2022 |
Rubber and vulcanizate - Determination of metal content by inductively coupled plasma optical emission spectrometry (ICP-OES) 生胶和硫化胶 用电感耦合等离子体发射光谱仪(ICP-OES)测定金属含量 |
China National Standards content |
English PDF |
| GB/T 41939-2022 |
Determination of magnesium content in rubber - Atomic absorption spectrometry 橡胶中镁含量的测定 原子吸收光谱法 |
China National Standards content |
English PDF |
| GB/T 42274-2022 |
Determination of content and distribution of trace elements (magnesium, gallium) in aluminum nitride materials Secondary ion mass spectrometry 氮化铝材料中痕量元素（镁、镓）含量及分布的测定 二次离子质谱法 |
China National Standards content |
English PDF |
| GB/T 42263-2022 |
Determination of nitrogen content in silicon single crystals - Secondary ion mass spectrometry 硅单晶中氮含量的测定 二次离子质谱法 |
China National Standards content |
English PDF |
| GB/T 42275-2022 |
Cemented carbide - Determination of total carbon content - High frequency combustion infrared absorption method/thermal conductivity method 硬质合金 总碳量的测定 高频燃烧红外吸收法/热导法 |
China National Standards content |
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 content |
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 content |
English PDF |
| GB/T 42276-2022 |
Determination of Fluoride and Chloride contents in Silicon Nitride Powder - Ion Chromatography 氮化硅粉体中氟离子和氯离子含量的测定 离子色谱法 |
China National Standards content |
English PDF |
| GB/T 42248-2022 |
Determination of iodine and bromine content in soil and water system sediment semi-melting-inductively coupled plasma mass spectrometry 土壤、水系沉积物 碘、溴含量的测定 半熔-电感耦合等离子体质谱法 |
China National Standards content |
English PDF |
| GB/T 41926-2022 |
Plastics - Determination of 1,2-ethylene glycol content in epoxy resins 塑料 环氧树脂 1,2-乙二醇含量的测定 |
China National Standards content |
English PDF |
| GB/T 41942-2022 |
Natural raw rubber and natural rubber latex - Determination of nitrogen content - Micro Dumas combustion method 天然生胶和天然胶乳 氮含量的测定 微杜马斯燃烧法 |
China National Standards content |
English PDF |
| GB/T 13277.9-2022 |
Compressed air - Part 9: Methods of measurement of liquid water content 压缩空气 第9部分：液态水含量测量方法 |
China National Standards content |
English PDF |
| GB/T 42197-2022 |
Specification for Metadata Description of Video Image content in Public Security Internet of Things 公安物联网视频图像内容元数据描述规范 |
China National Standards content |
English PDF |
| GB/T 6499-2022 |
Raw cotton impurity content test method 原棉含杂率试验方法 |
China National Standards content |
English PDF |
| GB/T 41682-2022 |
Determination of headspace gas content in food plastic packaging containers - sensor method 食品塑料包装容器中顶空气体含量的测定 传感器法 |
China National Standards content |
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 content |
English PDF |
| GB/T 41764-2022 |
Determination of photoinitiator content in radiation-curing coatings - Gas chromatography-mass spectrometry 辐射固化涂料中光引发剂含量的测定 气相色谱-质谱联用法 |
China National Standards content |
English PDF |
| GB/T 1871.5-2022 |
Determination of magnesium oxide content in phosphate rocks and concentrates - Flame atomic absorption spectrometry, volumetric and inductively coupled plasma emission spectrometry 磷矿石和磷精矿中氧化镁含量的测定 火焰原子吸收光谱法、容量法和电感耦合等离子体发射光谱法 |
China National Standards content |
English PDF |
| GB/T 5686.1-2022 |
Ferromanganese, manganese silicon alloy, ferromanganese nitride and metal manganese Determination of manganese content Potentiometric titration, ammonium nitrate oxidation titration and perchloric acid oxidation titration 锰铁、锰硅合金、氮化锰铁和金属锰 锰含量的测定 电位滴定法、硝酸铵氧化滴定法及高氯酸氧化滴定法 |
China National Standards content |
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 content |
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 content |
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 content |
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 content |
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 content |
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 content |
English PDF |
| GB/T 5686.4-2022 |
Ferromanganese, manganese silicon alloy, ferromanganese nitride and metal manganese Determination of phosphorus content Molybdenum blue spectrophotometry and bismuth phosphorus molybdenum blue spectrophotometry 锰铁、锰硅合金、氮化锰铁和金属锰 磷含量的测定 钼蓝分光光度法和铋磷钼蓝分光光度法 |
China National Standards content |
English PDF |
| GB/T 5686.2-2022 |
Determination of ferromanganese, manganese-silicon alloy, ferromanganese nitride and metal manganese-silicon content Molybdenum blue spectrophotometry, potassium fluorosilicate titration and perchloric acid gravimetric method 锰铁、锰硅合金、氮化锰铁和金属锰 硅含量的测定 钼蓝分光光度法、氟硅酸钾滴定法和高氯酸重量法 |
China National Standards content |
English PDF |
| GB/T 41704-2022 |
Testing method for cathode material of lithium ion battery - Determination of magnetic foreign matter content and residual alkali content 锂离子电池正极材料检测方法 磁性异物含量和残余碱含量的测定 |
China National Standards content |
English PDF |
| GB/T 6730.61-2022 |
Iron ore - Determination of carbon and sulfur content - High frequency combustion infrared absorption method 铁矿石 碳和硫含量的测定 高频燃烧红外吸收法 |
China National Standards content |
English PDF |
| GB/T 20092.3-2022 |
Chinese News Information content Part 3: XML Format for Data Exchange 中文新闻信息内容 第3部分：数据交换的XML格式 |
China National Standards content |
English PDF |
| GB/T 20092.2-2022 |
Chinese News Information content Part 2: News Metadata 中文新闻信息内容 第2部分：新闻元数据 |
China National Standards content |
English PDF |
| GB/T 20092.1-2022 |
Chinese News Information content Part 1: Conceptual Model 中文新闻信息内容 第1部分：概念模型 |
China National Standards content |
English PDF |
| GB/T 41768-2022 |
Thermal insulation materials for building - Determination of organic matter content 建筑用绝热材料 有机物含量的测定 |
China National Standards content |
English PDF |
| GB/T 38265.9-2022 |
Test methods for soldering fluxes - Part 9: Determination of ammonia content 软钎剂试验方法 第9部分：氨含量的测定 |
China National Standards content |
English PDF |
| GB/T 38265.8-2022 |
Test methods for soldering fluxes - Part 8: Determination of zinc content 软钎剂试验方法 第8部分：锌含量的测定 |
China National Standards content |
English PDF |
| GB/T 38265.6-2022 |
Test methods for soldering fluxes - Part 6: Determination of halide (excluding fluoride) content 软钎剂试验方法 第6部分：卤化物（不包括氟化物）含量的测定 |
China National Standards content |
English PDF |
| GB/T 6730.64-2022 |
Iron ore - Determination of water-soluble chloride content - Ion selective electrode method 铁矿石 水溶性氯化物含量的测定 离子选择电极法 |
China National Standards content |
English PDF |
| GB/T 18931-2022 |
Classification of alkaline dense shaped refractory products with carbon content less than 7% 碳含量小于7%的碱性致密定形耐火制品分类 |
China National Standards content |
English PDF |
| GB/T 25963-2022 |
Determination of aromatics content in middle distillates containing fatty acid methyl esters - High performance liquid chromatography with differential refractive index detector 含脂肪酸甲酯中间馏分芳烃含量的测定 示差折光检测器高效液相色谱法 |
China National Standards content |
English PDF |
| GB/T 8039-2022 |
Determination method of total sulfur content in coking benzene products 焦化苯类产品全硫含量的测定方法 |
China National Standards content |
English PDF |
| GB 24427-2021 |
content limitation of mercury, cadmium and lead for zinc anode primary battery 锌负极原电池汞镉铅含量的限制要求 |
China National Standards content |
English PDF |
| GB/T 40535.1-2021 |
Test methods of continuous nitride ceramic fibers—Part 1：Nitrogen content 连续氮化物陶瓷纤维测试方法 第1部分：氮含量 |
China National Standards content |
English PDF |
| GB/T 40503-2021 |
Measuring methods of secondary coal slime content in coal preparation plant 选煤厂次生煤泥量的测定方法 |
China National Standards content |
English PDF |
| GB/T 40461-2021 |
Determination of sodium content for fertilizers 肥料中钠含量的测定 |
China National Standards content |
English PDF |
| GB/T 40342-2021 |
Method for determination of aluminum content in hot dipped zinc-aluminum alloy coating on steel wire 钢丝热镀锌铝合金镀层中铝含量的测定 |
China National Standards content |
English PDF |
| GB/T 40312-2021 |
Ferrophosphorus—Determination of phosphorus, silicon, manganese and titanium content—Wavelength dispersive X-ray fluorescence spectrometry method (fused cast bead method) 磷铁 磷、硅、锰和钛含量的测定 波长色散X射线荧光光谱法（熔铸玻璃片法） |
China National Standards content |
English PDF |
| GB/T 40311-2021 |
Vanadium slag—Determination of multi-element contents—Wavelength dispersive X-ray fluorescence spectrometry(fused cast bead method) 钒渣 多元素的测定 波长色散X射线荧光光谱法（熔铸玻璃片法） |
China National Standards content |
English PDF |
| GB/T 40304-2021 |
Determination of content of nonmetallic inclusions in steel—Billet full section method 钢中非金属夹杂物含量的测定 钢坯全截面法 |
China National Standards content |
English PDF |
| GB/T 40281-2021 |
Determination of content of nonmetallic inclusions in steel—Extremum analytical method 钢中非金属夹杂物含量的测定 极值分析法 |
China National Standards content |
English PDF |
| GB/T 39715.4-2021 |
Plastics—Biobased content—Part 4: Determination of biobased mass content 塑料 生物基含量 第4部分：生物基物质含量的测定 |
China National Standards content |
English PDF |
| GB/T 39715.3-2021 |
Plastics—Biobased content—Part 3:Determination of biobased synthetic polymer content 塑料 生物基含量 第3部分：生物基合成聚合物含量的测定 |
China National Standards content |
English PDF |
| GB/T 39715.2-2021 |
Plastics—Biobased content—Part 2: Determination of biobased carbon content 塑料 生物基含量 第2部分：生物基碳含量的测定 |
China National Standards content |
English PDF |
| GB/T 39715.1-2021 |
Plastics—Biobased content—Part 1: General principles 塑料 生物基含量 第1部分：通用原则 |
China National Standards content |
English PDF |
| GB/T 34830.2-2021 |
Collection specifications for credit information—Part 2: contents 信用信息征集规范 第2部分：内容 |
China National Standards content |
English PDF |
| GB/T 34520.8-2021 |
Test methods of continuous silicon carbide fibers—Part 8：Oxygen content 连续碳化硅纤维测试方法 第8部分：氧含量 |
China National Standards content |
English PDF |
| GB/T 20899.6-2021 |
Methods for chemical analysis of gold ores—Part 6: Determination of zinc content 金矿石化学分析方法 第6部分：锌量的测定 |
China National Standards content |
English PDF |
| GB/T 20899.5-2021 |
Methods for chemical analysis of gold ores—Part 5: Determination of lead content 金矿石化学分析方法 第5部分：铅量的测定 |
China National Standards content |
English PDF |
| GB/T 20899.4-2021 |
Methods for chemical analysis of gold ores—Part 4: Determination of copper content 金矿石化学分析方法 第4部分：铜量的测定 |
China National Standards content |
English PDF |
| GB/T 15224.2-2021 |
Classification for quality of coal—Part 2: Sulfur content 煤炭质量分级 第2部分：硫分 |
China National Standards content |
English PDF |
| GB/T 14949.2-2021 |
Manganese ores—Determination of nickel content—Flame atomic absorption spectrometric method 锰矿石 镍含量的测定 火焰原子吸收光谱法 |
China National Standards content |
English PDF |
| GB/T 14949.11-2021 |
Manganese ores—Determination of carbon content—Gravimetric method and infrared absorption method 锰矿石 碳含量的测定 重量法和红外线吸收法 |
China National Standards content |
English PDF |
| GB/T 7739.6-2021 |
Methods for chemical analysis of gold concentrates—Part 6: Determination of zinc content 金精矿化学分析方法 第6部分：锌量的测定 |
China National Standards content |
English PDF |
| GB/T 7739.5-2021 |
Methods for chemical analysis of gold concentrates—Part 5: Determination of lead content 金精矿化学分析方法 第5部分：铅量的测定 |
China National Standards content |
English PDF |
| GB/T 7731.5-2021 |
Ferrotungsten—Determination of silicon content—Silicomolybdenum blue spectrophotometric method 钨铁 硅含量的测定 硅钼蓝分光光度法 |
China National Standards content |
English PDF |
| GB/T 7731.4-2021 |
Ferrotungsten—Determination of phosphorus content—Phosphorus molybdenum blue spectrophotometric method 钨铁 磷含量的测定 磷钼蓝分光光度法 |
China National Standards content |
English PDF |
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