BS EN ISO 9702-1997

塑料.环氧氨硬化剂.对第1、2、3 氨组含氮量的测定

Kunststoffe. Aminische Epoxidhaerter. Bestimmung der primaeren, sekundaeren und tertiaeren Amingruppen als Stickstoffgehalt Plastics - Amine Epoxide Hardeners - Determination of Primary, Secondary and ...

BS EN ISO 5983-2-2009

动物饲料.含氮量的测定和粗蛋白含量的计算.分块分解/蒸汽蒸馏法

Futtermittel. Bestimmung des Stickstoffgehaltes und Berechnung des Rohproteingehaltes. Blockaufschluss-und Dampfdestillationsverfahren Animal feeding stuffs. Determination of nitrogen content and calcu...

实施日期：2009-07-31

DIN EN ISO 6974-6-2005

天然气 用气相色谱法以规定的不确定度测定成分 第6部分: 用三根毛细柱测定氢、氦、氧、氮、二氧化碳和C1-C8的烃

Natural gas - Determination of composition with defined uncertainty by gas chromatography - Part 6: Determination of hydrogen, oxygen, nitrogen, carbon dioxide and hydrocarbons up to C8 using three ca...

实施日期：2005-08-01

ISO 14255-1998

土壤质量--用氯化钙溶液做提取剂测定风干土壤中的硝酸盐氦,铵氮和总溶解氮

Soil quality. Determination of nitrate nitrogen,ammonium nitrogen and total soluble nitrogen in air-dry soils using calcium chloride solution as extractant first edition

实施日期：1998-05-01

DIN 51444-2003

石油产品试验 氮的测定 化学发光探头的燃烧方法

Testing of petroleum products - Determination of nitrogen - Oxidative combustion method with chemiluminescence detector

NF A06-559-2010

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

NF X20-510-4-2003

Natural gas - Determination of composition with defined uncertainty by gas chromatography - Part 4 : determination of nitrogen, carbon dioxide and C1 up to C5 and C6+ hydrocarbons for a laboratory and on-line measuring system using two columns.

SH/T 0413-1992(2005)

液体石蜡中微量碱性氮含量测定法

发布日期：1992-05-20  实施日期：1992-05-20

DIN EN ISO 21068-3-2008

含碳化硅原材料和耐火制品的化学分析 第3部分:氮、氧、金属和氧化物组分的测定

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

实施日期：2008-12-01

NF V18-100-1-2005

Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Part 1 : Kjeldahl method.

ISO 13878-1998

土壤质量--总氮含量的测定 干烧法(元素分析)

Soil quality. Determination of total nitrogen content by dry combustion (elemental analysis") first edition"

实施日期：1998-03-15

ISO 15351-1999

钢与铁--氮含量的测定--惰性气体融合后热电导测量法(常规方法)

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

发布日期：1999-12-01  实施日期：1999-12-01

BS EN ISO 5983-1-2005

动物饲料.含氮量的测定和粗蛋白含量的计算.基耶达尔(Kjeldahl)法

Futtermittel. Bestimmung des Stickstoffgehaltes und Berechnung des Rohproteingahaltes. Kjeldahl-Verfahren Animal feeding stuffs. Determination of nitrogen content and calculation of crude protein conte...

实施日期：2005-08-23

BS EN ISO 10695-2000

水质.所选用的有机氮和磷化合物含量的测定.气相色谱法

Wasserbeschaffenheit. Bestimmung ausgewaehlter organischer Stickstoff-und Phosphorverbindungen. Gaschromatographische Verfahren Water Quality-Determination of Selected Organic Nitrogen and Phosphorus C...

实施日期：2000-10-15

ISO 6974-6 CORR 1-2003

Natural gas. Determination of composition with defined uncertainty by gas chromatography. Part 6:Determination of hydrogen,helium,oxygen,nitrogen,carbon dioxide and c1 to c8 hydrocarbons using three capillary columns first edition

实施日期：2003-10-15

SH/T 0656-1998

石油产品及润滑剂中碳、氢、氮测定法(元素分析仪法)

Standard test methods for instrumental determination of barbon,hydrogen,and nitrogen in petroleum products and lubricants

实施日期：1998-12-01

EN ISO 6974-6-2005

Natural gas. Determination of composition with defined uncertainty by gas chromatography. Part 6:Determination of hydrogen,helium,oxygen,nitrogen,carbon dioxide and C1 to C8 hydrocarbons using three capillary columns

实施日期：2005-06-01

EN ISO 6974-4-2001

Natural Gas. Determination of Composition with Defined Uncertainty by Gas Chromatography. Part 4:Determination of Nitrogen,Carbon Dioxide and C1 to C5 and C6+ Hydrocarbons for a Laboratory and On-Line Measuring System Using Two Columns

实施日期：2001-08-01

ISO 17997-2-2004

牛乳 酪蛋白氮含量的测定 第1部分:直接法

Milk -- Determination of casein-nitrogen content -- Part 2: Direct method

发布日期：2004-09-01  实施日期：2004-09-01

QJ 2781-1995

碳素材料碳、氢、氮含量测定方法