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

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

EN ISO 1833-15-2010

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

实施日期：2010-10-01

NY/T 1977-2010

水溶肥料总氮、磷、钾含量的测定

Water-soluble fertilizers-Determination of total nitrogen,phosphorus and potassium content

发布日期：2010-12-23  实施日期：2011-02-01

ISO 15672-2000

橡胶和橡胶配合剂 用自动分析仪测定总氮含量

Rubber and rubber additives -- Determination of total nitrogen content using an automatic analyser

发布日期：2000-07-01  实施日期：2000-07-01

NF V03-750-2007

谷类和豆子.氮含量的测定和生蛋白含量的测定.凯氏测氮法( KJELDAHL )

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

YB/T 4306-2012

钢铁及合金 氮含量的测定 惰性气体熔融热导法

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

发布日期：2012-11-07  实施日期：2013-03-01

YC/T 161-2002

烟草及烟草制品 总氮的测定连续流动法

Tobacco and tobacco products-Determination of total nitrogen-Continuous flow mentod

发布日期：2002-09-12  实施日期：2002-12-01

DIN ISO 11261-1997

土壤质量.总氮测定.修改后的Kjeldahl法

Soil quality - Determination of total nitrogen - Modified Kjeldahl method (ISO 11261:1995)

EN ISO 3188-1994

Starches and Derived Products. Determination of Nitrogen Content by the Kjeldahl Method. Titrimetric Method

实施日期：1994-08-01

BS EN ISO 4945-2009

Steel. Determination of nitrogen content. Spectrophotometric method

实施日期：2010-04-30

QJ 2781-1995

碳素材料碳、氢、氮含量测定方法

NF A06-559-2010

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

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 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

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

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

DIN SPEC 1138-2010

食品 根据Dumas原理和天然蛋白质含量的计算用燃烧法测定总氮含量 第2部分:谷物、豆类和碾磨过的谷物产品

Food products - Determination of the total nitrogen content by combustion according to the Dumas principle and calculation of the crude protein content - Part 2: Cereals, pulses and milled cereal produ...

实施日期：2010-02-01