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含碳化硅、氮化硅、氧氮化硅和赛龙的原材料及耐火材料的化学分析 第3部分：氮、氧及金属和氧化物组分的测定（ISO 21068-3:2024）

Chemical analysis of raw materials and refractory products containing silicon-carbide, silicon-nitride, silicon-oxynitride and sialon - Part 3: Determination of nitrogen, oxygen and metallic and oxidic constituents (ISO 21068-3:2024)

皮革的氮含量(基尔达斯法)和皮革物质含量的标准试验方法

Standard Test Method for Nitrogen Content (Kjeldahl) and Hide Substance Content of Leather

橡胶合成配料的标准试验方法.橡胶抗氧化剂中基本氮含量测定:聚合的四氢呋喃(TMQ)

Standard Test Method for Rubber Compounding Materials8212;Determination of the Basic Nitrogen Content in Rubber Antioxidant: Polymerized TMQ

橡胶复合材料的标准试验方法&x2014;橡胶抗氧化剂中基本氮含量的测定: 聚合TMQ

Standard Test Method for Rubber Compounding Materials&x2014;Determination of the Basic Nitrogen Content in Rubber Antioxidant: Polymerized TMQ

橡胶配合材料的标准试验方法 橡胶抗氧化剂中碱性氮含量的测定：聚合TMQ

Standard Test Method for Rubber Compounding Materials—Determination of the Basic Nitrogen Content in Rubber Antioxidant: Polymerized TMQ

聚氨脂原材料的标准试验方法:可以表示为氮的百分量的多元醇中碱度的测定

Standard Test Method for Polyurethane Raw Materials: Determination of Basicity in Polyols, Expressed as Percent Nitrogen

聚氨酯原材料的标准试验方法: 多元醇碱度的测定(以氮百分比表示)

Standard Test Method for Polyurethane Raw Materials: Determination of Basicity in Polyols, Expressed as Percent Nitrogen

聚氨酯原材料的标准试验方法:以氮百分比表示的多元醇碱度的测定

Standard Test Method for Polyurethane Raw Materials: Determination of Basicity in Polyols, Expressed as Percent Nitrogen

D5762-通过船入口化学发光法测定液态碳氢化合物、石油和石油产品中氮的测试方法

D5762-Test Method for Nitrogen in Liquid Hydrocarbons, Petroleum and Petroleum Products by Boat-Inlet Chemiluminescence

钢和生铁.氮含量的测定.惰性气体熔融热导法

Steel and iron - Determination of nitrogen content - Thermal conductimetric method after fusion in a current of inert gas

乳和乳制品.氮含量的测定.根据 Dumas原理使用常规燃烧法

Milk and milk products - Determination of nitrogen content - Routine method using combustion according to the Dumas principle

钢铁.氮含量的测定.惰性气体熔融后热电导率测定法(常规方法)

Steel and iron - Determination of nitrogen content - Thermal conductimetric method after fusion in a current of inert gas (Routine method)

纺织品 定量化学分析 黄麻与某些动物纤维的混合物（测定氮含量的方法）

Textiles. Quantitative chemical analysis - Mixtures of jute with certain animal fibres (method by determining nitrogen content)

谷物和豆类.氮含量测定和粗蛋白质含量的计算.基耶达尔法

Cereals and pulses. Determination of the nitrogen content and calculation of the crude protein content. Kjeldahl method

含碳化硅、氮化硅、氧氮化硅和赛隆的原材料和耐火制品的化学分析 氮、氧、金属和氧化物成分的测定

Chemical analysis of raw materials and refractory products containing silicon-carbide, silicon-nitride, silicon-oxynitride and sialon-Determination of nitrogen, oxygen and metallic and oxidic constituents

淀粉及其衍生产品 凯氏定氮法测定氮含量 滴定法

Starches and derived products — Determination of nitrogen content by the Kjeldahl method — Titrimetric method

淀粉及其衍生产品 凯氏定氮法测定氮含量 光谱法

Starches and derived products — Determination of nitrogen content by the Kjeldahl method — Spectrometric method

动物饲料.含氮量的测定和粗蛋白含量的计算.第2部分:分块消化/蒸汽蒸馏法(ISO 5983-2-2009)

Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Part 2: Block digestion and steam distillation method (ISO 5983-2:2009)

乳和乳制品.氮含量的测定.凯氏原理和粗蛋白的计算

Milk and milk products. Determination of nitrogen content. Kjeldahl principle and crude protein calculation

牛奶 氮含量的测定 第2部分：块消化法（宏观法）

Milk — Determination ofnitrogen content — Part 2 : Block - digestion method (Macro method)

牛奶 氮含量的测定 块消解法（半微量快速常规法）

Milk. Determination of nitrogen content. Block-digestion method (Semi-micro rapid routine method)

肥料和土壤调理剂. 肥料级尿素. 通用要求

Fertilizer and soil conditioners. Fertilizer grade urea. General requirements

天然生胶和天然胶乳. 采用微杜马斯燃烧法测定氮含量

Rubber, raw natural, and rubber latex, natural. Determination of nitrogen content by Micro Dumas combustion method

肉类及肉制品 氮含量的测定 参考方法

Meat and meat products. Determination of nitrogen content. Reference method

鱼露标准

Standard for Fish Sauce

含碳化硅、氮化硅、氧氮化硅和赛隆的原材料和耐火制品的化学分析 第3部分：氮、氧、金属和氧化物成分的测定

Chemical analysis of raw materials and refractory products containing silicon-carbide, silicon-nitride, silicon-oxynitride and sialon – Part 3: Determination of nitrogen, oxygen and metallic and oxidic constituents

奶及奶制品 氮含量测定和粗蛋白计算 凯氏定氮法

Milk and milk products. Determination of nitrogen content and crude protein calculation. Kjeldahl method

液体燃料 燃油 第1部分：燃油 EL 最低要求

Liquid fuels - Fuel oils - Part 1: Fuel oils EL, minimum requirements

水果汁和蔬菜汁.氮含量测定.基耶达氏法

Fruit and vegetable juices - Determination of nitrogen content - Kjeldahl method; German version EN 12135:1997

钢和铁.氮含量的测定.惰性气体流中熔解后热电导法

Steel and iron - Determination of nitrogen content - Thermal conductimetric method after fusion in a current of inert gas (ISO 10720:1997); English version of DIN EN ISO 10720:2007-06

钢和铁 氮含量的测定 惰性气体流中熔化后的热导法

Steel and iron - Determination of nitrogen content - Thermal conductimetric method after fusion in a current of inert gas (ISO 10720:1997); German version EN ISO 10720:2007

核能-UO (Index)2 、(U,Gd)O (Index)2 中氮含量的测定和(U Pu)O (指数) 2 ：烧结球团 惰性气体萃取和电导率美利体育登录入口官网方法（草案）

Nuclear energy - Determination of nitrogen content in UO (Index)2, (U,Gd)O (Index)2 and (U Pu)O (Index) 2: Inert gas extraction and conductivity detection method for sintered pellets (draft)

钢铁.氮含量测定.惰性气体流融合后的热电导计方法(常规法)(ISO 15351-1999).德文版本EN ISO 15351-2010

Steel and iron - Determination of nitrogen content - Thermal conductimetric method after fusion in a current of inert gas (Routine method) (ISO 15351:1999); German version EN ISO 15351:2010

钢和铁 氮含量的测定 在惰性气体流中熔化后的热导法（常规方法）

Steel and iron - Determination of nitrogen content - Thermal conductimetric method after fusion in a current of inert gas (Routine method) (ISO 15351:1999); German version EN ISO 15351:2010

纺织品 定量化学分析 第15部分：黄麻与某些动物纤维的混纺物(氮含量测定法)（草案）

Quantitative Chemical Analysis of Textiles Part 15: Blends of Jute and Certain Animal Fibers (Determination of Nitrogen Content) (Draft)

纺织品.定量化学分析.第15部分:黄麻与某些动物纤维的混纺物(氮含量测定法)(ISO 1833-15-2006);德文版本EN ISO 1833-15-2010

Textiles - Quantitative chemical analysis - Part 15: Mixtures of jute and certain animal fibres (method by determining nitrogen content) (ISO 1833-15:2006); German version EN ISO 1833-15:2010

谷物和豆类 氮含量的测定和粗蛋白含量的计算 凯氏定氮法（草案）

Determination of nitrogen content and calculation of crude protein content in cereals and legumes Kjeldahl method (draft)

谷物和豆类. 氮含量的测定和粗蛋白含量的计算. 凯氏定氮法(ISO 20483-2013); 德文版本EN ISO 20483-2013

Cereals and pulses - Determination of the nitrogen content and calculation of the crude protein content - Kjeldahl method (ISO 20483:2013); German version EN ISO 20483:2013

含碳化硅、氮化硅、氧氮化硅和赛隆的原材料和耐火制品的化学分析 第3部分：氮、氧和金属及氧化物成分的测定（ISO 21068-3:2024）

Chemical analysis of raw materials and refractory products containing silicon-carbide, silicon-nitride, silicon-oxynitride and sialon - Part 3: Determination of nitrogen, oxygen and metallic and oxidic constituents (ISO 21068-3:2024); German version EN...

含碳化硅、氮化硅、氧氮化硅和赛隆的原材料和耐火产品的化学分析 第3部分：氮、氧和金属及氧化物成分的测定（ISO 21068-3:2024）

Chemical analysis of raw materials and refractory products containing silicon-carbide, silicon-nitride, silicon-oxynitride and sialon - Part 3: Determination of nitrogen, oxygen and metallic and oxidic constituents (ISO 21068-3:2024); German version EN...

钢.氮含量的测定.分光光度法

Steel - Determination of nitrogen content - Spectrophotometric method (ISO 4945:1977); German version EN ISO 4945:2009

动物饲料.氮含量的测定和粗蛋白质的计算.第1部分:基尔达斯法

Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Part 1: Kjeldahl method (ISO 5983-1:2005); English version of DIN EN ISO 5983-1

牲畜饲料.氮含量和粗蛋白质含量的测定.第2部分:消解法和蒸馏法(ISO 5983-2:2009),DIN EN ISO 5983-2:2009-10的英文版本

Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Part 2: Block digestion and steam distillation method (ISO 5983-2:2009); English version of DIN EN ISO 5983-2:2009-10

动物饲料氮含量的测定和粗蛋白含量的计算第2部分：块消化和蒸汽蒸馏法

Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Part 2: Block digestion and steam distillation method (ISO 5983-2:2009); German version EN ISO 5983-2:2009

牛奶和奶制品 氮含量的测定 第1部分：凯氏定氮法的原理和粗蛋白计算（草案）

Determination of nitrogen content of milk and milk products Part 1: Principles of Kjeldahl method and calculation of crude protein (draft)

牛奶—氮含量的测定— 第1部分：凯氏定氮法（ISO 8968-1:2001）

Milk — Determination of nitrogen content — Part 1: Kjeldahl method (ISO 8968-1:2001)

牛奶中氮含量的测定 第2部分：块消化法（宏观方法）

Determination of nitrogen content in milk - Part 2: Block digestion method (macroscopic method)

牛奶.含氮量的测定.第3部分:小块分解法(半微量快速程序法)

Milk - Determination of nitrogen content - Part 3: Block-digestion method (Semi-micro rapid routine method) (ISO 8968-3:2004); English version of DIN EN ISO 8968-3:2007-09

牛奶-氮含量的测定-第3部分：块消解法（半微量快速常规法）

Milk - Determination of nitrogen content - Part 3: Block-digestion method (Semi-micro rapid routine method) (ISO 8968-3:2004); German version EN ISO 8968-3:2007

塑料.胺类环氧固化剂.伯仲叔胺基含氮量的测定

Plastics - Amine epoxide hardeners - Determination of primary, secondary and tertiary amine group nitrogen content (ISO 9702:1996); German version EN ISO 9702:1998

塑料-胺环氧化物硬化剂-伯胺、仲胺和叔胺基氮含量的测定

Plastics - Amine epoxide hardeners - Determination of primary, secondary and tertiary amine group nitrogen content (ISO 9702:1996); German version EN ISO 9702:1998

全乳 乳脂肪、蛋白质和乳糖含量的测定 中红外美利体育官网首页网址操作指南

Whole milk - Determination of milkfat, protein and lactose content - Guidance on the operation of mid-infrared instruments

淀粉及其制品.用其尔达斯法测定氮含量.光谱法(ISO 5378-1978)

Starches and Derived Products - Determination of Nitrogen Content by the Kjeldahl Method - Spectrophotometric Method (ISO 5378 : 1978)

硫酸铵

Ammonium sulphate

金属钙分析方法 第5部分：蒸馏-奈斯勒试剂光度法测定氮

Method for the analysis of metallic calcium - Part 5: Determination of nitrogen by distillation - Nessler reagent photometry

钢铁.氮含量的测定.惰性气体熔融热导法(常规方法)

Steel and iron - Determination of nitrogen content - Thermal conductimetric method after fusion in a current of inert gas (Routine method)

锂化学分析方法 氮量的测定 碘化汞钾分光光度法

Methods for chemical analysis of lithium Determination of nitrogen content Mercuric potassium iodide spectrophotometric method

淀粉及其衍生物氮含量测定

Starches and derived products.Determination of nitrogen content

钒氮合金　氮含量的测定 惰性气体熔融热导法

Vanadium-nitrogen—Determination of nitrogen content—Thermal conductimetric method after fusion in a current of inert gas

钒氮合金 氮含量的测定 蒸馏-中和滴定法

Vanadium-nitrogen—Determination of nitrogen content—Distillation-neutralization titration method

煤焦油 硫和氮含量的测定

Coal tar—Determination of sulfur and nitrogen content

硅单晶中氮含量的测定 二次离子质谱法

Determination of nitrogen content in silicon single crystal—Secondary ion mass spectrometry method

铸造用再生砂氮、硫、磷含量测定方法

Determination Methods for Nitrogen, Sulfur, and Phosphorus Contents in Regenerated Sand for Foundry Use

焦化苯类产品氮含量的测定

Determination of Nitrogen Content in Coked Benzene Products

肥料级硫酸铵 第1号修改单

Amendment No. 1 of fertilizer grade ammonium sulfate

谷物和豆类.氮含量测定和粗蛋白质含量计算.凯氏法

Cereals and pulses.Determination of the nitrogen content and calculation of the crude protein content.Kjeldahl method

天然生胶和天然胶乳.氮含量的测定

Rubber,raw natural and rubber latex,natural.Determination of nitrogen content

肉与肉制品.氮含量测定

Meat and meat products.Determination of nitrogen content

肉和肉制品.氮含量测定(基准法)

Meat and meat products. Determination of nitrogen content (Reference method)

工业用尿素. 氮含量的测定. 蒸馏后滴定法

Urea for industrial use. Determination of nitrogen content. Titrimetric method after distillation

天然橡胶原料和天然胶乳 氮含量的测定

Raw natural rubber and natural rubber latex. Determination of nitrogen content

高温合金化学分析方法 水蒸汽蒸馏－容量法（或吸光光度法）测定氮含量

Superalloy Chemical Analysis Method Water Steam Distillation - Volumetric Method (or Absorptiometry) Determination of Nitrogen Content

高温合金化学分析方法 第48部分：水蒸汽蒸馏-容量法(或吸光光度法)测定氮含量

Methods for chemical analysis of superalloys. Part 48: Determination of nitrogen content by water vapour distillation-volumetric method( or photometric method)

阻燃化学品 聚磷酸三聚氰胺

Flame retardant chemical melamine polyphosphate

谷物 氮含量的测定与粗蛋白质的计算 改良凯氏定氮法 第1部分：参考方法

Cereals. Determination of nitrogen content and crude protein calculation. Modified Kjeldahl method. Part 1: Reference method

Subproductos oleaginosos. Determinación del contenido de nitrógeno y cálculo del contenido de proteína cruda. Parte 1 - Método Kjeldahl con catalizador titanio-cobre.

Oleaginous by-products. Determination of nitrogen content and calculation of crude protein content. Part 1 - Kjeldahl method with titanium-copper catalyst.

钢和铁 氮含量的测定 惰性气体流中熔解物的热传导法

Steel and iron - Determination of nitrogen content - Thermal conductimetric method after fusion in a current of inert gas

核能.UO2、（U，Gd）O2和（U，Pu）O2烧结颗粒中氮含量的测定.惰性气体萃取和电导率美利体育登录入口官网方法

Nuclear energy - Determination of nitrogen content in UO2, (U,Gd)O2 and (U,Pu)O2 sintered pellets - Inert gas extraction and conductivity detection method

牛奶和奶制品.测定氮含量.根据 Dumas原理使用常规燃烧法

Milk and milk products - Determination of nitrogen content - Routine method using combustion according to the Dumas principle

天然生胶和天然胶乳 氮含量的测定

Rubber, raw natural, and rubber latex, natural - Determination of nitrogen content

纺织品.定量化学分析.第15部分:黄麻和某些动物纤维的混合（氮含量测定法）

Textiles - Quantitative chemical analysis - Part 15: Mixtures of jute and certain animal fibres (method by determining nitrogen content)

纺织及印刷业;；定量化学分析第15部分:黄麻和某些动物纤维的混合物（氮含量测定法）

Textiles — Quantitative chemical analysis — Part 15: Mixtures of jute and certain animal fibres (method by determining nitrogen content)

谷物与豆类.氮含量的测定和粗蛋白质含量的计算.基耶达法

Cereals and pulses.Determination of the nitrogen content and calculation of the crude protein content.Kjeldahl method

奶酪和精制奶酪含氮馏分的测定

Cheese and processed cheese - Determination of the nitrogenous fractions

动物饲料.氮含量测定和粗蛋白含量的计算.第2部分:分块消化和蒸气蒸馏法

Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Part 2: Block digestion and steam distillation method

牛奶.氮含量的测定.第3部分:块溶解法(半微观快速常规法)

Milk - Determination of nitrogen content - Part 3: Block-digestion method (Semi-micro rapid routine method)

加工干酪制品.表达式为磷化物的磷酸盐添加成分的计算

Processed cheese products.Calculation of content of added phosphate expressed as phosphorus

锰铁化学分析方法.第7部分:氮含量测定

Method for chemical analysis of ferromanganese -- Part 7: Determination of nitrogen content

铬铁化学分析方法.第6部分:氮含量测定

Method for chemical analysis of ferrochromium .Part 6: Determination of nitrogen content

原油和石油产品.氮含量的测定

Crude petroleum and petroleum products -- Determination of nitrogen content

原油和石油产品氮含量的测定

Crude petroleum and petroleum products -- Determination of nitrogen content

工业硝化纤维素

Industrial Nitrocellulose

核能 UO2、(U,Gd)O2和(U,Pu)O2烧结燃料颗粒中氮含量的测定 惰性气体熔解法与电导率测量法（ISO 12799:2015）

Nuclear energy - Determination of nitrogen content in UO2, (U,Gd)O2 and (U,Pu)O2 sintered pellets - Inert gas extraction and conductivity detection method (ISO 12799:2015)

含有碳化硅、氮化硅、氧氮化硅和赛隆的原料及耐火产品的化学分析 第3部分：氮、氧及金属和氧化物组分的测定 (ISO 21068?3:2024)

Chemical analysis of raw materials and refractory products containing silicon-carbide, silicon-nitride, silicon-oxynitride and sialon - Part 3: Determination of nitrogen, oxygen and metallic and oxidic constituents (ISO 21068?3:2024)

饲料 氮含量测定和粗蛋白含量计算 第2部分：块状消解和蒸汽蒸馏法（第二次修订）（ISO 5983-2:2009 IDT）

Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Part 2: Block digestion and steam distillation method (Second Revision) (ISO 5983-2:2009, IDT)

含碳化硅、氮化硅、氧氮化硅和赛隆的原材料和耐火制品的化学分析 第3部分：氮、氧、金属和氧化物成分的测定

Chemical analysis of raw materials and refractory products containing silicon-carbide, silicon-nitride, silicon-oxynitride and sialon - Part 3 : determination of nitrogen, oxygen and metallic and oxidic constituents

加工奶酪产品 添加磷酸盐含量的计算（以磷表示）

Processed cheese products. Calculation of content of added phosphate expressed as phosphorus

石油添加剂中氮含量测定法（克氏法）

Determination of Nitrogen Content in Petroleum Additives (Kirsch method)

进出口标准橡胶检验方法.氮含量的测定

Inspecting method of import and export standard rubber.Determination of nitrogen content

进出口石油焦中氮的测定.热导法

Determination of nitrogen in petroleum coke for import and export- Thermal conductivity method

土壤改良剂和生长介质 氮的测定 第1部分：改良凯氏定氮法

Soil improvers and growing media - Determination of nitrogen - Part 1: Modified Kjeldahl method

核能 UO?、(U,Gd)O?和(U,Pu)O?烧结颗粒中氮含量的确定 惰性气体提取及电导率美利体育登录入口官网方法（ISO 12799:2015）

Nuclear energy - Determination of nitrogen content in UO2, (U,Gd)O2 and (U,Pu)O2 sintered pellets - Inert gas extraction and conductivity detection method (ISO 12799:2015)

牛奶和奶制品 氮含量的测定 根据杜马斯原理采用燃烧的常规方法（ISO 14891:2002）

Milk and milk products - Determination of nitrogen content - Routine method using combustion according to the Dumas principle (ISO 14891:2002)

谷物和豆类 氮含量的测定和粗蛋白含量的计算 凯氏定氮法（ISO 20483:2006）

Cereals and pulses - Determination of the nitrogen content and calculation of the crude protein content - Kjeldahl method (ISO 20483:2006)

化学分析方法 萤石以外的原材料和耐火制品 第3部分：氮、氧及金属与氧化物组分的测定（ISO 21068-3:2024 等同）

Chemical analysis of raw materials and refractory products containing silicon-carbide, silicon-nitride, silicon-oxynitride and sialon — Part 3: Determination of nitrogen, oxygen and metallic and oxidic constituents (ISO 21068-3:2024, IDT)

淀粉及其衍生产品 凯氏定氮法测定氮含量 滴定法（ISO 3188:1978）

Starches and derived products - Determination of nitrogen content by the Kjeldahl method - Titrimetric method (ISO 3188:1978)

淀粉及其衍生产品 凯氏定氮法测定氮含量 分光光度法（ISO 5378:1978）

Starches and derived products - Determination of nitrogen content by the Kjeldahl method - Spectrophotometric method (ISO 5378:1978)

牛奶 氮含量的测定 第1部分：凯氏定氮法（ISO 8968-1:2001）

Milk - Determination of nitrogen content - Part 1: Kjeldahl method (ISO 8968-1:2001)

牛奶和乳制品 氮含量测定 第1部分：开氏原理及粗蛋白计算（ISO 8968-1:2014）

Milk and milk products - Determination of nitrogen content - Part 1: Kjeldahl principle and crude protein calculation (ISO 8968-1:2014)

牛奶 氮含量的测定 第2部分:块消解法(宏观法)(ISO 8968-2:2001)

Milk - Determination of nitrogen content - Part 2: Block-degestion method (Macro method) (ISO 8968-2:2001)

牛奶 硫氮含量测定 第3部分：块消化法（半微量快速常规方法）(ISO 8968-3:2004)

Milk - Determination of nitrogen content - Part 3: Block-digestion method (Semi-micro rapid routine method) (ISO 8968-3:2004)

核能 固溶体烧结粒（UO2、(U,Gd)O2 和 (U,Pu)O2）中氮含量的测定 惰性气体提取与电导率美利体育登录入口官网方法（ISO 12799:2015 等同采用）

Nuclear energy - Determination of nitrogen content in UO2, (U,Gd)O2 and (U,Pu)O2 sintered pellets - Inert gas extraction and conductivity detection method (ISO 12799:2015, IDT)

天然生橡胶和天然胶乳 氮含量的测定

Rubber, raw natural and rubber latex, natural - Determination of nitrogen content

纺织品 定量化学分析 第15部分：黄麻与某些动物纤维的混合物（氮含量测定法）（ISO 1833-15:20006 IDT）

Textiles - Quantitative chemical analysis - Part 15: Mixtures of jute and certain animal fibres (method by determining nitrogen content) (ISO 1833-15:20006, IDT)

煤中氮的测定半微量凯氏定氮法

Coal - Determination of nitrogen - Semi-micro Kjeldahl method

肉及肉制品 氮含量的测定 参考方法（等同采用ISO 937:2023）

Meat and meat products — Determination of nitrogen content — Reference method (ISO 937:2023, IDT)

核能 UO2、(U,Gd)O2 和(U,Pu)O2 烧结球团中氮含量的测定 惰性气体萃取和电导率美利体育登录入口官网方法

Nuclear energy - Determination of nitrogen content in UO2, (U,Gd)O2 and (U,Pu)O2 sintered pellets - Inert gas extraction and conductivity detection method (ISO 12799:2015) (Endorsed by Asociación Espa?ola de Normalización in July of 2019.)

纺织品 定量化学分析 第15部分：黄麻与某些动物纤维的混合物（测定氮含量的方法）

Textiles - Quantitative chemical analysis - Part 15: Mixtures of jute with certain animal fibres (method by determining nitrogen content) (ISO 1833-15:2019)

谷物和豆类 氮含量的测定和粗蛋白含量的计算 凯氏定氮法（ISO 20483:2013）

Cereals and pulses - Determination of the nitrogen content and calculation of the crude protein content - Kjeldahl method (ISO 20483:2013)

含碳化硅、氮化硅、氧氮化硅和硅铝氧氮的原料及耐火材料的化学分析 第3部分：氮、氧及金属和氧化物成分的测定（ISO 21068-3:2024）

Chemical analysis of raw materials and refractory products containing silicon-carbide, silicon-nitride, silicon-oxynitride and sialon - Part 3: Determination of nitrogen, oxygen and metallic and oxidic constituents (ISO 21068-3:2024) (Endorsed by Asoci...

乳和乳制品-氮含量的测定-第1部分：凯氏定氮原理和粗蛋白计算（ISO 8968-1:2014）

Milk and milk products - Determination of nitrogen content - Part 1: Kjeldahl principle and crude protein calculation (ISO 8968-1:2014)

含碳化硅、氮化硅、氧氮化硅和赛隆的原材料和耐火制品的化学分析 第3部分：氮、氧、金属和氧化物成分的测定

Chemical analysis of raw materials and refractory products containing silicon-carbide, silicon-nitride, siliconoxynitride and sialon - Part 3: Determination of nitrogen, oxygen and metallic and oxidic constituents

钒氮合金 氮含量的测定 脉冲加热惰气熔融-飞行时间质谱法（常规法）

Determination of nitrogen content in vanadium-nitrogen alloys by pulse heating inert gas melting-time-of-flight mass spectrometry (conventional method)

钼铼合金化学分析方法 第6部分：氧和氮含量的测定 惰性气体熔融-红外吸收法和热导法

Methods for chemical analysis of molybdenum-rhenium alloys Part 6: Determination of oxygen and nitrogen content Inert gas melting-infrared absorption method and thermal conductivity method

苯胺黑药

Anino dithiophosphate