nitrogen content

nitrogen content, Total:500 items.

In the international standard classification, nitrogen content involves: Ferroalloys, Milk and milk products, Fertilizers, Leather technology, Analytical chemistry, Ferrous metals, Organic chemicals, Non-ferrous metals, Meat, meat products and other animal produce, Animal feeding stuffs, Edible oils and fats. Oilseeds, Inorganic chemicals, Coals, Raw materials for rubber and plastics, Farming and forestry, Products of the chemical industry, Spices and condiments. Food additives, General methods of tests and analysis for food products, Sugar. Sugar products. Starch, Soil quality. Pedology, Fuels, Food products in general, Plastics, Water quality, Beverages, Fruits. Vegetables, Air quality, Rubber, Wastes, Metalliferous minerals, Construction materials, Petroleum products in general, Protection against fire, Products of the textile industry, Lubricants, industrial oils and related products, AGRICULTURE, Powder metallurgy, Textile fibres, Processes in the food industry, External water conveyance systems, Tea. Coffee. Cocoa, Conducting materials, Cereals, pulses and derived products, Aircraft and space vehicles in general, Rubber and plastics products, Crude petroleum, Testing of metals.

Military Standard of the People's Republic of China-General Armament Department, nitrogen content

GJB 770.303-1989 Test methods for gunpowder analysis: Determination of nitrogen content of nitrocellulose. Five-tube nitrogen meter method
GJB 337-1987 Determination method of nitrogen content of nitrocellulose (interferometer method)
GJB 337-1987(XG1-2015) Modification sheet 1-2015 for determination method of nitrogen content of nitrocellulose
GJB 212.16-1986 Special industrial leather - Determination of nitrogen content and "skin" - Titration method
GJB 770.308-1990 Test methods for gunpowder analysis Determination of nitrogen content of nitrocellulose Ferrous iron-titanium chloride method
GJB 2589.20A-2021 Test methods for physical and chemical properties of military leather fur Part 20: Determination of nitrogen content and cortex

RU-GOST R, nitrogen content

GOST 15933.11-1970 Ferroniobium. Method for the determination of nitrogen content
GOST 20851.2-1975 Mineral fertilizers. Methods for determination of phosphates
GOST 13301-1967 Organic chemical products. Method of test for microdetermination of nitrogen
GOST 12359-1999 Carbon, alloyed and high-alloyed steels. Methods for determination of nitrogen
GOST 12359-1981 Steels carbon, alloyed and highalloyed. Methods for the determination of nitrogen
GOST R 50453-1992 Meat and meat products. Determination of nitrogen content (Reference method)
GOST 8775.4-1987 Lithium. Method of determination of nitrogen
GOST 21600.6-1983 Ferrochrome. Method for the determination of nitrogen
GOST 29288-1992 Fertilizers with high content of nitrogen. Ammonium nitrate. Method for determination of the ability to suppress the lubricant
GOST 26107-1984 Soils. Methods for determination of total nitrogen
GOST 34111-2017 Juice products. Determination of nitrogen content by Kjeldahl method
GOST 20851.1-1975 Mineral fertilizers. Methods for determination of nitrogen content
GOST R 55331-2012 Milk and milk products. Titrimetric method of calcium content determination
GOST 32008-2012 Meat and meat products. Determination of nitrogen content (Reference method)
GOST 22720.4-1977 Rare metals and their alloys. Method for the determination of nitrogen
GOST 30181.6-1994 Mineral fertilizers. Method for determination of mass fraction of nitrogen in ammonium salts (in ammonium form, using the formaldehyde method)
GOST R 51438-1999 Fruit and vegetable juices. Kjeldahl method for determination of nitrogen content
GOST R 55282-2012 Raw milk. The colorimetric method of urea content determination
GOST ISO 1833-15-2015 Textiles. Quantitative chemical analysis. Part 15. Mixtures of jute and certain animal fibres (method by determining nitrogen content)
GOST R 50568.1-1993 Urea for industrial use. Determination of nitrogen content. Titrimetric method after distillation
GOST R 54234-2010 Solid recovered fuels. Determination of carbon, hydrogen and nitrogen content by instrument methods
GOST R 55246-2012 Milk and milk products. Determination of non-protein nitrogen content by Kjeldahl method
GOST 32467-2013 Urea for industrial use. Determination of nitrogen content. Titrimetric method after distillation
GOST R ISO 1656-2017 Raw natural rubber and natural rubber latex. Determination of nitrogen content

Association Francaise de Normalisation, nitrogen content

NF V04-211:1971 MILK. DETERMINATION OF TOTAL NITROGEN CONTENT. (KJELDAHL METHOD).
NF U42-141:1984 Fertilizers. Determination of nitrate nitrogen content. Nitrogen gravimetric method.
NF A06-555:2010 Steel - Determination of nitrogen content - Spectrophotometric method.
NF ISO 11261:1995 Soil quality - Total nitrogen dosage - Modified Kjeldahl method
NF V04-221-5:2002 Milk - Determination of nitrogen content - Part 5 : determination of protein-nitrogen content.
NF V18-120:1997 Animal feeding stuffs. Determination of nitrogen content. Combustion method (DUMAS).
NF V04-221-4:2002 Milk - Determination of nitrogen content - Part 4 : determination of non-protein nitrogen content.
NF T20-295:1968 CHEMICAL ANALYSIS OF SULPHURIC ACID AND OLEUM. DETERMINATION OF TOTAL NITROGEN.
NF V59-202:1988 Collagenes. Determination of the nitrogen content.
NF V03-607*NF EN ISO 3188:1994 Starches and derived products. Determination of nitrogen content by the kjeldahl method. Titrimetric method.
NF V03-050:1970 Agricultural food products. General directions for the determination of nitrogen with mineralization by the jkeldahl method.
NF T51-702*NF EN ISO 9702:1998 Plastics. Amine epoxide hardeners. Determination of primary, secondary and tertiary amine group nitrogen content.
NF C17-200 F1:2000 Solid mineral fuels - Determination of nitrogen.
NF X33-009*NF EN 13342:2000 Characterization of sludges - Determination of Kjeldahl nitrogen
NF T90-015:1975 TESTING WATER-DETERMINATION OF NITROGEN (AMMONIA)
NF X31-111*NF ISO 11261:1995 Soil quality. Determination of total nitrogen. Modified kjeldahl method.
NF U42-117:1965 Products used in agriculture. Fertilizers. Determination of nitrogen content in class a nitrogenous fertilizers.
NF U42-118:1965 Products used in agriculture. Determination of nitrogen content in class B nitrogenous fertilizers.
NF U42-119:1965 Products used in agriculture. Determination of nitrogen content in class C nitrogenous fertilizers.
NF U42-416*NF EN 15478:2009 Fertilizers - Determination of total nitrogen in urea.
NF ISO 27871:2011 Fromages et fromages fondus - Détermination des fractions azotées
NF V04-279*NF ISO 27871:2011 Cheese and processed cheese - Determination of nitrogenous fractions
NF EN 15558:2009 Fertilizers - Dosage of nitrate and ammonia nitrogen according to Ulsch
NF ISO 13878:1998 Soil quality - Determination of total nitrogen content by dry combustion ("elemental analysis")
NF T43-106:2008 Rubber, raw natural, and rubber latex, natural - Determination of nitrogen content.
NF T43-106:2015 Rubber, raw natural, and rubber latex, natural - Determination of nitrogen content
NF A06-654:1993 Chemical analysis of titanium alloys. Determination of nitrogen content. Titrimetric method.
NF A06-324*NF ISO 10702:1996 Steel and iron. Determination of nitrogen content. Titrimetric method after distillation.
XP U42-730*XP CEN/TS 17771:2022 Organic and organo-mineral fertilizers - Determination of the nitrogen content
NF EN 25663:1994 Water quality - Kjeldahl nitrogen dosage - Method after selenium mineralization
XP CEN/TS 17771:2022 Organic and organo-mineral fertilizers - Determination of nitrogen content
NF X43-009:1973 Nitrogen dioxyde content of the atmosphere (griess saltzman reaction).
NF V76-134*NF EN 12135:1997 Fruit and vegetable juices. Determination of nitrogen content. Kjeldahl method.
NF EN ISO 16948:2015 Solid biofuels - Determination of total carbon, hydrogen and nitrogen content
NF EN 15559:2009 Fertilizers - Dosage of nitrate and ammonia nitrogen according to Arnd
NF EN ISO 20483:2014 Cereals and legumes - Determination of nitrogen content and calculation of crude protein content - Kjeldahl method
NF V03-750:1999 Cereals and pulses. Determination of the nitrogen content and calculation of the raw protein content. Kjeldahl method.
NF X43-018:1983 Air pollution. Measurement of nitrogen oxides by chemiluminescence.
NF T43-106:1990 Rubber, raw natural, and rubber latex, natural. Determination of nitrogen content.
NF T20-286:1982 Nitric acid for industrial use. Determination of ammoniacal nitrogen content. Spectrophotometric method.

Professional Standard - Military and Civilian Products, nitrogen content

WJ 2128-1993 Method for Determination of Nitrogen Content in Primer
WJ 36-2005 Test method of nitrocellulose.Nitrogen content.Devarda alloy reduction method

Professional Standard - Aviation, nitrogen content

HB 5220.23-1982 Determination of nitrogen content in superalloys
HB 5297.17-1984 Determination of Nitrogen in Titanium and Titanium Alloys by Steam Distillation

Taiwan Provincial Standard of the People's Republic of China, nitrogen content

CNS 1289-1960 Method of Test for Leather (Nitrogen Content Test)
CNS 8991-1982 Chemical Reagent(Ammonium Salt Nitrates and Total Nitrogen Determination)
CNS 11304-2002 Iron and steel-Methods for determination of nitrogen content
CNS 14896.1-2005 Titanium and titanium alloys - Methods for determination of nitrogen content
CNS 14896-1-2005 Titanium and titanium alloys - Methods for determination of nitrogen content
CNS 10828-1984 Method for Determination of Nitrogen of Coal and Coke (Kjeloahl Method)

RO-ASRO, nitrogen content

SR 184-25-1998 Ethyl alcohol. Determination of ammonia and azotic bases nitrogen content
SR ISO 4176:1981 Fertilizers. Determination of nitrate nitrogen content. Nitrogen gravimetric method
STAS 6843-1982 STEELS ANI) CAST 1RONS Determination of nitrogen content
STAS 6182/4-1979 WINE Determination of total nitrogen content
STAS 7425-1979 NITROCELLULOSES Determination of nitrogen content
STAS 8613/6-1980 CONCENTRATED FOODSTUFF Determination of nitrogen content
STAS SR 12271-6-1994 Uranium dioxide. Determination of nitrogen content
STAS SR EN 10179-1994 Chemicat analysis of ferrous materials - Determination of nitrogen (trace amounts) in steel - Spectrophotometric method
STAS 12200-1985 SLUDGES RESULTED FROM= SURFACE WATERS TREATMENT AND WASTE WATERS PURIFI- CATION Nitrogen content determination
STAS 7312-1983 SURFACE AND RESIDUAL WATERS Determination of azote content
STAS 8854-1972 ADDITIVES FOR MINERAL OILS Determination of nitrogen content
STAS SR 4895-5-1997 Tobacco and tobacco products. Determination of total nitrogen content
STAS 7184/2-1985 SOILS Nitrogen content determination
SR ISO 5315:1984 Fertilizers. Determination of totai nitrogen content.Titrimetric method after distilation
STAS SR ISO 7408:1993 Fertilizers. Determination of ammoniacal nitrogen content in the presence of other substances which release ammonia when treated with sodium hydroxide. Titrimetric method
SR ISO 5314:1981 Fertilizers. Determination of ammoniaca! nitrogen content Titrimetric method after distillation
STAS SR 13257-1996 COFFEE Determination of nitrogen content by the Kjeldahi method Spectrophotometric method
SR ISO 5313:1986 High nitrogen content, straight ammonium nitrate fertilizers. Determination of oil retention
STAS 9065/7-1974 MEAT AND MEAT PRODUCTS Determination of easyly hydrolisable nitrogen content
STAS SR 13325-1995 Animal feeding stuffs - Determination of total nitrogen content and calculation of crude protein content

German Institute for Standardization, nitrogen content

DIN CEN/TS 15558:2007 Fertilizers - Determination of nitric and ammoniacal nitrogen according to Ulsch; German version CEN/TS 15558:2007
DIN CEN/TS 15559:2007 Fertilizers - Determination of nitric and ammoniacal nitrogen according to Arnd; German version CEN/TS 15559:2007
DIN EN ISO 8968-4:2002 Milk - Determination of nitrogen content - Part 4: Determination of the non-protein-nitrogen content (ISO 8968-4:2001); German version EN ISO 8968-4:2001
DIN EN ISO 8968-5:2002 Milk - Determination of nitrogen content - Part 5: Determination of protein-nitrogen content (ISO 8968-5:2001); German version EN ISO 8968-5:2001
DIN EN ISO 9702:1998 Plastics - Amine epoxide hardeners - Determination of primary, secondary and tertiary amine group nitrogen content (ISO 9702:1996); German version EN ISO 9702:1998
DIN 53308:1968 Testing of leather; determination of the contents of total nitrogen and of ammonium salts, calculation of hide substance
DIN EN ISO 8968-3:2007 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
DIN EN 12135:1997-12 Fruit and vegetable juices - Determination of nitrogen content - Kjeldahl method; German version EN 12135:1997
DIN 51722-1:1990-07 Testing of solid fuels; determination of nitrogen content; semi-micro Kjeldahl method
DIN EN ISO 4945:2010 Steel - Determination of nitrogen content - Spectrophotometric method (ISO 4945:1977); German version EN ISO 4945:2009
DIN EN 10179:2023-07 Steels - Determination of nitrogen (trace amounts) - Spectrophotometric method; German and English version prEN 10179:2023 / Note: Date of issue 2023-05-26*Intended as replacement for DIN EN 10179 (1990-04).
DIN EN 15476:2009 Fertilizers - Determination of nitric and ammoniacal nitrogen according to Devarda; English version of DIN EN 15476:2009-04
DIN ISO 13878:1998 Soil quality - Determination of total nitrogen content by dry combustion ("elemental analysis") (ISO 13878:1998)
DIN CEN/TS 17771:2022-07 Organic and organo-mineral fertilizers - Determination of the nitrogen content; German version CEN/TS 17771:2022
DIN EN ISO 3188:1994 Starches and derived products - Determination of nitrogen content by the Kjeldahl method - Titrimetric method (ISO 3188:1978); German version EN ISO 3188:1994
DIN EN 12260:2003 Water quality - Determination of nitrogen - Determination of bound nitrogen (TN<(Index)b>), following oxidation to nitrogen oxides; German version EN 12260:2003
DIN EN ISO 20483:2014-03 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
DIN EN 16168:2012 Sludge, treated biowaste and soil - Determination of total nitrogen using dry combustion method; German version EN 16168:2012
DIN EN 13716:2003 Surface active agents - Determination of total base nitrogen - Potentiometric titration; German version EN 13716:2001
DIN EN 12135:1997 Fruit and vegetable juices - Determination of nitrogen content - Kjeldahl method; German version EN 12135:1997
DIN EN ISO 8968-4:2016-09 Milk and milk products - Determination of nitrogen content - Part 4: Determination of protein and non-protein nitrogen content and true protein content calculation (Reference method) (ISO 8968-4:2016); German version EN ISO 8968-4:2016

British Standards Institution (BSI), nitrogen content

BS EN 15558:2009 Fertilizers - Determination of nitric and ammoniacal nitrogen according to Ulsch
BS ISO 27871:2011 Cheese and processed cheese. Determination of the nitrogenous fractions
BS EN ISO 8968-5:2002 Milk. Determination of nitrogen content. Determination of protein-nitrogen content
BS EN ISO 8968-4:2002 Milk. Determination of nitrogen content. Determination of non-protein nitrogen content
BS EN ISO 9702:1997 Plastics - Amine epoxide hardeners - Determination of primary, secondary and tertiary amine group nitrogen content
BS DD CEN/TS 15478:2006 Fertilizers - Determination of total nitrogen in urea
BS EN ISO 3188:1994 Starches and derived products - Determination of nitrogen content by the Kjeldahl method - Titrimetric method
BS EN ISO 5983-1:2005 Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Kjeldahl method
DD ENV 12260-1996 Water quality. Determination of nitrogen. Determination of bound nitrogen, after combustion and oxidation to nitrogen dioxide, using chemiluminescence detection
BS EN ISO 4945:2010 Steel. Determination of nitrogen content. Spectrophotometric method
BS EN ISO 4945:2009 Steel - Determination of nitrogen content - Spectrophotometric method
BS 5551-4.1.1:1981 Fertilizers - Chemical analysis - Determination of nitrogen - Nitron gravimetric method for determination of nitrate nitrogen
BS ISO 17997-2:2005 Milk - Determination of casein-nitrogen content - Direct method
BS ISO 17997-2:2004 Milk. Determination of casein-nitrogen content - Direct method
BS EN 15476:2009 Fertilizers - Determination of nitric and ammoniacal nitrogen according to Devarda
BS EN 16168:2012 Sludge, treated biowaste and soil. Determination of total nitrogen using dry combustion method
PD CEN/TS 17771:2022 Organic and organo-mineral fertilizers. Determination of the nitrogen content
BS DD CEN/TS 15407:2006 Solid recovered fuels - Method for the determination of carbon (C), hydrogen (H) and nitrogen (N) content
BS ISO 17997-1:2005 Milk - Determination of casein-nitrogen content - Indirect method (Reference method)
23/30472739 DC BS EN 10179. Steels. Determination of nitrogen (trace amounts). Spectrophotometric method
BS ISO 1656:2019 Rubber, raw natural, and rubber latex, natural. Determination of nitrogen content
BS 4267-1:1988(1999) Ammonium nitrate — Part 1 : Method for determination of ammoniacal nitrogen content
BS 4267-2:1988(1999) Ammonium nitrate — Part 2 : Method for determination of total nitrogen content
BS ISO 937:2023 Meat and meat products. Determination of nitrogen content. Reference method
BS EN ISO 8968-4:2016 Milk and milk products. Determination of nitrogen content. Determination of protein and non-protein nitrogen content and true protein content calculation (Reference method)
BS EN 15559:2009 Fertilizers - Determination of nitric and ammoniacal nitrogen according to Arnd
BS EN 12135:1998 Fruit and vegetable juices - Determination of nitrogen content - Kjeldahl method
BS ISO 17997-1:2004 Milk. Determination of casein-nitrogen content - Indirect method (Reference method)
BS EN ISO 8968-4:2016(2017) Milk and milk products — Determination of nitrogen content Part 4 : Determination of protein and non - protein nitrogen content and true protein content calculation (Reference method)

ZA-SANS, nitrogen content

SANS 8968-5:2006 Milk - Determination of nitrogen content - Part 5: Determination of protein-nitrogen content
SANS 8968-4:2006 Milk - Determination of nitrogen content Part 4: Determination of non-protein-nitrogen content
SANS 8968-1:2006 Milk - Determination of nitrogen content Part 1: Kjeldahl method
SANS 333:1996 Coal - Determination of nitrogen - Semi-micro Kjeldahl method
SANS 8968-2:2006 Milk - Determination of nitrogen content Part 2: Block-digestion method (Macro method)
SANS 970:2010 Leather - Determination of nitrogen content and "hide substance" - Titrimetric method

NL-NEN, nitrogen content

NEN 3442-1968 Meat and meat products. Determination of nitrogen content
NEN 3760-1984 Cheese - Determination of the nitrogen content according to Kjeldahl - Calculation of the crude protein content
NEN 6642-1992 Water-Calculation of total nitrogen content
NEN 3198-1984 Milk, evaporated milk and dried milk - Determination of the nitrogen content according to Kjeldahl - Calculation of the crude protein content (reference method)

Korean Agency for Technology and Standards (KATS), nitrogen content

KS M ISO 4176-2006(2011) Fertilizers－Determination of nitrate nitrogen content－Nitron gravimetric method
KS M ISO 5313:2007 High nitrogen content, straight ammonium nitrate fertilizers-Determination of oil retention
KS D 2573-2005 Methods for determination of nitrogen in zirconium and zirconium alloys
KS M ISO 5314:2007 Fertilizers-Determination of ammoniacal nitrogen content-Titrimetric method after distillation
KS M ISO 5313:2013 High nitrogen content, straight ammonium nitrate fertilizers－Determination of oil retention
KS M ISO 5314:2013 Fertilizers－Determination of ammoniacal nitrogen content－Titrimetric method after distillation
KS D 2555-2005 Methods for determination of nitrogen in tantalum
KS D 2530-2007 Methods for determination of nitrogen in titanium and titanium alloys
KS I ISO 13878:2009 Soil quality－Determination of total nitrogen content by dry combustion(“elemental analysis”)
KS M ISO 9702:2002 Plastics－Amine epoxide hardners－Determination of primary, secondary and tertiary amine group nitrogen content
KS D 1811-2003 Methods for determination of nitrogen in iron and steel
KS M 8531-2004 Sodium hydroxide for nitrogen compounds analysis
KS D ISO 4945:2002 Steel－Determination of nitrogen content－Spectrophotometric method
KS I ISO 13878-2023 Soil quality－Determination of total nitrogen content by dry combustion(“elemental analysis”)
KS D ISO 4945-2002(2017) Steel－Determination of nitrogen content－Spectrophotometric method
KS M 2112-2011(2016) Crude petroleum and petroleum products —Determination of nitrogen content
KS M 2112-2011(2021) Crude petroleum and petroleum products —Determination of nitrogen content
KS M 2112-1986 Crude petroleum and petroleum products —Determination of nitrogen content
KS M 2112-2021 Crude petroleum and petroleum products —Determination of nitrogen content
KS D ISO 10702:2002 Steel and iron－Determination of nitrogen content－Titrimetric method after distillation
KS M ISO 5315-2007(2012) Fertilizers－Determination of total nitrogen content－Titrimetric method after distillation
KS M ISO 4176-2012 Fertilizers－Determination of nitrate nitrogen content－Nitron gravimetric method
KS I ISO 13878-2009(2019) Soil quality－Determination of total nitrogen content by dry combustion(“elemental analysis”)
KS M ISO 5397:2002 Leather－Determination of nitrogen content and “hide substance”－Titrimetric method
KS M ISO 4176:2012 Fertilizers－Determination of nitrate nitrogen content－Nitron gravimetric method
KS M 2112-2011 Crude petroleum and petroleum products-Determination of nitrogen content
KS M ISO 1656:2010 Rubber, raw natural, and rubber latex, natural-Determination of nitrogen content
KS M ISO 1656:2015 Rubber, raw natural, and rubber latex, natural－Determination of nitrogen content
KS M ISO 5314-2007(2012) Fertilizers－Determination of ammoniacal nitrogen content－Titrimetric method after distillation
KS M 1922-2002(2007) Urea for industrial use－Determination of nitrogen content－Titrimetric method after distillation
KS M ISO 5397-2022 Leather－Determination of nitrogen content and “hide substance”－Titrimetric method
KS M ISO 5314-2013 Fertilizers－Determination of ammoniacal nitrogen content－Titrimetric method after distillation
KS H ISO 3188-2023 Starches and derived products－Determination of nitrogen content by the Kjeldahl method－Titrimetric method
KS M ISO 5397-2002(2017) Leather－Determination of nitrogen content and “hide substance”－Titrimetric method
KS M ISO 5397-2002(2022) Leather－Determination of nitrogen content and “hide substance”－Titrimetric method
KS E ISO 333-2018 Coal－Determination of nitrogen－Semi-micro Kjeldahl method
KS H ISO 3188-2008(2018) Starches and derived products－Determination of nitrogen content by the Kjeldahl method－Titrimetric method
KS M ISO 8603:2007 Solid fertilizers－Determination of urea nitrogen content－Gravimetric method using xanthydrol
KS M ISO 8603:2012 Solid fertilizers-Determination of urea nitrogen content-Gravimetric method using xanthydrol
KS M 1922-2009 Urea for industrial use－Determination of nitrogen content－Titrimetric method after distillation

Professional Standard - Commodity Inspection, nitrogen content

SN/T 0840-1999 Method for the determination of nitrogen content of urea for import and export
SN/T 0840-2015 Determination of nitrogen content of urea for import and export
SN/T 0736.5-1999 Chemical analysis of fertilizers for import and export.Determination of nitrogen content
SN/T 3097-2012 Determination of total nitrogen in fertelezers.Combustion
SN/T 0541.5-2009 Inspecting method of import and export standard rubber.Determination of nitrogen content
SN/T 3382-2012 Determination of non-protein-nitrogen content in milk and dairy products for export

PL-PKN, nitrogen content

PN C87075-1992 Fertilizers. High nitrogen content straight ammonium nitrate fertilizers. Determination of pH
PN C87076-1992 Fertilizers. High nitrogen content straight ammonium nitrate fertilizers. Determination of oil retention
PN C04576 ArkusZ14-1973 Water and w?sie water Tes?s for nitrogen Calcula?ion of to?al nitrogen
PN Z04075-1961 Speedy Me?hod for De?er mina?ion of Ni?rogen Oxyde* in Air
PN P22117-1992 Leathers. Determination of nitrogen content ammonium salts and "hide substance"
PN H04206-06-1986 Chemical analysis of ferro-alloys Ferroehrom Determination of nitrogen content
PN A79528-17-1993 Spirit (ethyl alcohol). Methods of tests. Determination of voltile nitrogen basen content

Professional Standard - Agriculture, nitrogen content

GB 609-1988 General method for the determination of total nitrogen content of chemical reagents
GB 3597-1983 Determination of nitrate nitrogen content in fertilizers Nitrogen reagent gravimetric method
NY/T 2419-2013 Determination of total nitrogen in plant.Automatic kjeldahl apparatus method
NY/T 2542-2014 Fertilizers.Determination of total nitrogen content
GB 8088-1987 Determination of Nitrogen Content in Natural Raw Rubber
GB 8572-1988 Determination of total nitrogen content in compound fertilizer
NY/T 1116-2014 Fertilizers.Determination of nitrate nitrogen, ammonium nitrogen, amide nitrogen contents
GB 3598-1983 Determination of Urea Nitrogen Content in Fertilizers Urease Method
GB/T 42955-2023 Determination of total nitrogen content in fertilizers Dumas combustion method
GB 3595-1983 Determination of ammonia nitrogen content in fertilizers Titration method after distillation

American Society for Testing and Materials (ASTM), nitrogen content

ASTM D3533-05 Standard Test Method for Rubber—Nitrogen Content
ASTM D3533-90(1995)e1 Standard Method of Rubber8212;Nitrogen Content
ASTM D3533-90(2001) Standard Test Method for Rubber8212;Nitrogen Content
ASTM E147-61(2017) Standard Specification for Apparatus for Microdetermination of Nitrogen by Kjeldahl Method
ASTM D3228-96 Standard Test Method for Total Nitrogen In Lubricating Oils and Fuel Oils By Modified Kjeldahl Method
ASTM D3228-01 Standard Test Method for Total Nitrogen In Lubricating Oils and Fuel Oils By Modified Kjeldahl Method
ASTM D322-97(2002)e1 Standard Test Method for Gasoline Diluent in Used Gasoline Engine Oils by Distillation
ASTM D3228-03 Standard Test Method for Total Nitrogen in Lubricating Oils and Fuel Oils by Modified Kjeldahl Method
ASTM D3228-08 Standard Test Method for Total Nitrogen in Lubricating Oils and Fuel Oils by Modified Kjeldahl Method
ASTM D322-97(2016) Standard Test Method for Gasoline Diluent in Used Gasoline Engine Oils by Distillation
ASTM D3228-05 Standard Test Method for Total Nitrogen in Lubricating Oils and Fuel Oils by Modified Kjeldahl Method
ASTM D2868-17 Standard Test Method for Nitrogen Content (Kjeldahl) and Hide Substance Content of Leather, Wet Blue and Wet White

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China, nitrogen content

GB/T 609-2006 Chemical reagent General method for the determination of total nitrogen
GB/T 609-2018 Chemical reagent.General method for the determination of total nitrogen
GB/T 3597-2002 Fertilizer--Determination of nitrate nitrogen content--Nitron gravimetric method
GB/T 15076.13-1994 Methods for chemical analysis of tantalum and niobium-Determination of nitrogen content in tantalum
GB/T 9823-2008 Inspection of grain and oils.Determination of total nitrogen content in plant oilseeds residues
GB/T 4698.7-2011 Methods for chemical analysis of titanium sponge, titanium and titanium alloys.Determination of oxygen and nitrogen content
GB 223.37-1985 Methods for chemical analysis of iron, steel and alloys Distillation separation-volumetric determination of nitrogen content
GB/T 20931.9-2007 Methods for chemical analysis of lithium Determination of nitrogen content Mercuric potassium iodide spectrophotometric method
GB/T 9695.11-2008 Meat and meat products.Determination of nitrogen content
GB/T 16480.5-1996 Method for chemical analysis of yttrium and yttium oxide--Determination of nitrogen content
GB/T 223.36-1994 Methods for chemical analysis of iron, steel and alloy. The neutral titration method for the determinaion of nitrogen content after distillation separation
GB/T 22427.10-2008 Starches and derived products-Determination of nitrogen content
GB/T 22427.10-2008 Starches and derived products-Determination of nitrogen content
GB/T22427.10-2008 Starches and derived products-Determination of nitrogen content
GB 223.37-1989 Methods for chemical analysis of iron,steel and alloy The indophenol blue photometric methods for the determination of nitrogen content after distillation seperation
GB/T 2441.1-2001 Determination of urea-Determination of total nitrogen content
GB/T 3600-2000 Fertilizers-Determination of ammoniacal nitrogen content-Formaldehyde method
GB/T 2910.15-2009 Textiles.Quantitative chemical analysis.Part 15:Mixtures of jute and certain animal fibres(method by determining nitrogen content )
GB/T 24583.3-2009 Vanadium-Nitrogen alloy.Determination of nitrogen content.The distillation-neutralization titration method
GB/T 4325.23-2013 Methods for chemical analysis of molybdenum.Part 23:Determination of oxygen and nitrogen contents.Inert gas fusion-infrared absorption and thermal conductivity method
GB/T 8088-1999 Rubber,raw natural and rubber latex,natural--Determination of nitrogen content
GB/T 2441.1-2008 Determination of urea.Part 1:Total nitrogen content
GB/T 21704-2008 Determination of non-protein-nitrogen content in milk and dairy products
GB/T 8088-2008 Rubber,raw natural and rubber latex,natural.Determination of nitrogen content
GB/T 24583.2-2009 Vanadium-Nitrogen alloy.Determination of nitrogen content.Thermal conductimetric method after fusion in a current of inert gas
GB/T 23835.12-2009 Lithium perchlorate anhydrous.Part 12:Determination of total nitrogen content
GB/T 17767.1-1999 Determination of total nitrogen content for organic-inorganic compound fertilizers
GB/T 4698.7-1996 Sponge titanium, titanium and titanium alloys--Determination of nitrogen content--Distillation--Nessler reagent spectrophotometric method
GB/T 5687.4-2016 Nitrogen-bearing ferrochromium and nitride ferrochrome with high nitrogen content.Determination of nitrogen content.The distillation-neutralization titration method
GB/T 3595-2000 Fertilizers-Determination of ammoniacal nitrogen content-Titrimetric method after distillation
GB/T 17674-2012 Determination of nitrogen in crude oil by boat-inlet chemiluminescence
GB/T 42263-2022 Determination of nitrogen content in silicon single crystal—Secondary ion mass spectrometry method

European Committee for Standardization (CEN), nitrogen content

EN ISO 8968-5:2001 Milk - Determination of nitrogen content - Part 5: Determination of protein-nitrogen content (ISO 8968-5:2001)
EN ISO 9702:1998 Plastics - Amine epoxide hardeners - Determination of primary, secondary and tertiary amine group nitrogen content (ISO 9702:1996)
EN ISO 3188:1994 Starches and Derived Products - Determination of Nitrogen Content by the Kjeldahl Method - Titrimetric Method
EN ISO 8968-3:2007 Milk - Determination of nitrogen content - Part 3: Block-digestion method (Semi-micro rapid routine method)
EN ISO 4945:2009 Steel - Determination of nitrogen content - Spectrophotometric method (ISO 4945:1977)
EN 16168:2012 Sludge, treated biowaste and soil - Determination of total nitrogen using dry combustion method
EN 15476:2009 Fertilizers - Determination of nitric and ammoniacal nitrogen according to Devarda
FprCEN/TS 17771-2021 Organic and organo-mineral fertilizers - Determination of the nitrogen content
CEN/TS 17771:2022 Organic and organo-mineral fertilizers - Determination of the nitrogen content
EN ISO 8968-3:2007/AC:2012 Milk - Determination of nitrogen content - Part 3: Block-digestion method (Semi-micro rapid routine method) - Technical Corrigendum 1 (ISO 8968-3:2004/Cor 1:2011)
EN ISO 8968-1:2014 Milk and milk products - Determination of nitrogen content - Part 1: Kjeldahl principle and crude protein calculation
EN 13716:2001 Surface active agents - Determination of total base nitrogen - Potentiometric titration
EN 12135:1997 Fruit and vegetable juices - Determination of nitrogen content - Kjeldahl method

YU-JUS, nitrogen content

JUS H.G8.457-1991 Reagents. Potassium sulpbate. Determination of total nltrogen content. Colorlmetrlc metho?
JUS H.G8.435-1990 Reaqents. Potassium iodide. Determination of total nitroaen content. Colorimetric method
JUS H.B8.818-1992 Straight ammonium nitrate fertilizers of high nitrogen content - Methods for the application of thermal cycles
JUS H.G8.415-1991 Reagents. So?ium hydroxide. Determination of total nitrogen content. Colorimetric method
JUS H.G8.447-1990 Reagents. Zine sulphate heptahydrate. Determination of total nitrogen content. Colorimetric method
JUS H.B8.813-1992 Straight ammonium nitrate fertilizers of high nitrogen content - Determination of the pH value of solution
JUS H.B8.816-1992 Straight ammonium nitrate fertilizers of high nitrogen content - Determination of resistance to detonation
JUS H.B8.817-1992 Straight ammonium nitrate fertilizers of high nitrogen content - Determination of the particle size (granulometry)
JUS H.B8.814-1992 Straight ammonium nitrate fertilizers of high nitrogen content - Determination of the chloride content (as chlorine ion)
JUS C.A1.409-1982 Methods for chemical analysi$ of ferroalloys. Titrimetric determination ofnitrogen in ferro-chromium
JUS H.B8.815-1992 Straight ammonium nitrate fertilizers of high nitrogen content - Determination of copper content - Atomic absorption spectrophotometric method
JUS H.B8.288-1983 Fertilizers. Determination of content total-nitrogen. Volumetric method
JUS H.F8.132-1986 Gases. Determination of nitrogen content. Gas chromatographic method
JUS H.G8.083-1983 Reagents. Sodium chloride. Determination of total nitrogen content. Colorimetric method
JUS H.G8.055-1983 Reagents. Hydrogen peroxide. Determination of total nitrogen content. Colorimetric method
JUS H.G8.290-1987 Reagents. Copper(ll) oxide. Determination of total nitrogen content. Colorimetric method
JUS H.G8.104-1984 Reagents. Potassium chloride. Determination of total nitrogen content. Colorimetric method
JUS H.G8.343-1988 Reagents. Zine chloride. Determination of total nitrogen content. Colorinetcic metbod
JUS E.Z8.016-1993 Soups,broaths,sauces and seasonings - Determination of total nitrogen content
JUS H.G8.489-1991 Reagents. Potassium permanganate. Determination of total nitrogen content. Colorimetric method
JUS H.B8.287-1983 Fertilizers. Determination of content amid-nitrogen. Spectrophotometric method
JUS H.G8.514-1991 Reagents. Potassium hydroxide. Determination of total nitrogen content. Colorimetric method
JUS H.G8.298-1987 Reagents. Oxaiic acid dihydrate. Determination of total nitrogen content. Colorimetric metbod
JUS H.B8.637-1981 Sulphuric acid for industrial use. Determination of ammoniacal nitrogen content. Spectrophotometric method
JUS H.G8.261-1987 Reagents. Barium chloride dihydrate. Determination of total nitrogen content. Colorimetric method
JUS E.Z8.017-1993 Soups,broaths,sauces and seasonings -Determination of the α-amino nitrogen content

TR-TSE, nitrogen content

TS 2428-1976 METHODS FOR THE CHEMICAL ANALYSIS OF IRON AND STEELS DETERMINATION OF NITROGEN CONTENT
TS 2466-1976 Nitric Acit For Industrial Use Determination of Ammoniacal Nitrogen Content Spectrophotoraetric Method

Professional Standard - Light Industry, nitrogen content

QB/T 3812.17-1999 Leather.Determination of nitrogen content and “hide substance”.Titrimtric method
QB/T 2186-1995 Determination of Liquid Nitrogen in Hydrolyzed Protein by Ammonia Gas Sensitive Electrode
QB/T 2722-2005 Leather-Chemical tests-Determination of nitrogen content and "hide substance"-Titrimetric method

VN-TCVN, nitrogen content

TCVN 6091-2004 Rubber, raw natural and rubber latex, natural.Determination of nitrogen content
TCVN 5265-1990 Bee products.Determination of total nitrogen content
TCVN 3706-1990 Aquatic products.Method for the determination of nitrogen ammonia content
TCVN 3707-1990 Aquatic products.Method for the determination of amine ammonia nitrogen content
TCVN 6014-2007 Hard coal.Determination of nitrogen.Semi-micro Kjeldahl method
TCVN 305-2010 Steel and iron.Determination of nitrongen content.Methods of chemical analysis.
TCVN 3708-1990 Aquatic products.Method for the determination of nitrogen amino acid content
TCVN 7252-2003 Tobacco and tobacco products.Determination of total nitrogen content
TCVN 5465-15-2009 Textiles.Quantitative chemical analysis.Part 15: Mixtures of jute and certain animal fibres (method by determining nitrogen content)
TCVN 7373-2004 Soils quality.Index values of total nitrogen content in the soils of Vietnam
TCVN 6645-2000 Soil quality.Determination of total nitrogen content by dry combustion ("elemental analysis")
TCVN 6091-2016 Rubber,raw natural,and rubber latex,natural - Determination of nitrogen content

International Organization for Standardization (ISO), nitrogen content

ISO 5314:1981 Fertilizers; Determination of ammoniacal nitrogen content; Titrimetric method after distillation
ISO 5397:1984 Leather; Determination of nitrogen content and "hide substance"; Titrimetric method
ISO 5313:1986 High nitrogen content, straight ammonium nitrate fertilizers; Determination or oil retention
ISO 8968-5:2001 Milk - Determination of nitrogen content - Part 5: Determination of protein-nitrogen content
ISO 8968-5:2001|IDF 20-5:2001 Determination of milk nitrogen content Part 5: Determination of protein nitrogen content
ISO 8968-4:2001 Milk - Determination of nitrogen content - Part 4: Determination of non-protein-nitrogen content
ISO 8968-4:2001 | IDF 20-4:2001 Milk — Determination of nitrogen content — Part 4: Determination of non-protein-nitrogen content
ISO 8968-5:2001 | IDF 20-5:2001 Milk — Determination of nitrogen content — Part 5: Determination of protein-nitrogen content
ISO 8968-4:2001|IDF 20-4:2001 Determination of milk nitrogen content Part 4: Determination of non-protein nitrogen content
ISO 9702:1996 Plastics - Amine epoxide hardeners - Determination of content of primary, secondary and tertiary amine group nitrogen content
ISO 5983:1997 Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Kjeldahl method
ISO 13878:1998 Soil quality - Determination of total nitrogen content by dry combustion ("elemental analysis")
ISO 8968-4:2001/Cor 1:2011 Milk - Determination of nitrogen content - Part 4: Determination of non-protein-nitrogen content; Technical Corrigendum 1
ISO 3099:1974 Oilseed residues — Determination of total nitrogen content
ISO 4945:2018 Steel - Determination of nitrogen - Spectrophotometric method
ISO 4945:1977 Steel; Determination of nitrogen content; Spectrophotometric method
ISO/TS 17837:2008|IDF/RM 25:2008 Determination of nitrogen content and calculation of crude protein content in milk and milk products Kjeldahl method
ISO/TS 17837:2008 Processed cheese products - Determination of nitrogen content and crude protein calculation - Kjeldahl method
ISO 8968-1:2001|IDF 20-1:2001 Determination of milk nitrogen content Part 1: Kjeldahl method
ISO 937:1978 Meat and meat products; Determination of nitrogen content (Reference method)
ISO 8968-1:2001 Milk - Determination of nitrogen content - Part 1: Kjeldahl method (Second edition)
ISO 8968-1:2001 | IDF 20-1: 2001 Milk — Determination of nitrogen content — Part 1: Kjeldahl method
ISO 4176:1981 Fertilizers; Determination of nitrate nitrogen content; Nitron gravimetric method
ISO/FDIS 937 Meat and meat products — Determination of nitrogen content — Reference method
ISO/DIS 937 Meat and meat products — Determination of nitrogen content — Reference method
ISO 1656:2014 Rubber, raw natural, and rubber latex, natural - Determination of nitrogen content
ISO 5397:1984 | IULTCS/IUC 10 Leather — Determination of nitrogen content and "hide substance" — Titrimetric method
ISO 937:2023 Meat and meat products — Determination of nitrogen content — Reference method
ISO 10702:1993 Steel and iron; determination of nitrogen content; titrimetric method after distillation
ISO 8968-4:2016 | IDF 20-4:2016 Milk and milk products — Determination of nitrogen content — Part 4: Determination of protein and non-protein nitrogen content and true protein content calculation (Reference method)
ISO 29441:2010 Water quality - Determination of total nitrogen after UV digestion - Method using flow analysis (CFA and FIA) and spectrometric detection
ISO 8603:1993 Solid fertilizers; determination of urea nitrogen content; gravimetric method using xanthydrol
ISO 1592:1977 Urea for industrial use; Determination of nitrogen content; Titrimetric method after distillation

工业和信息化部, nitrogen content

YS/T 1467.10-2021 Hafnium Chemical Analysis Methods Part 10: Determination of Oxygen and Nitrogen Amounts
YB/T 4582.7-2017 Determination of total nitrogen content of ferrous silicon nitride by neutralization titration method
YB/T 4566.1-2016 Determination of nitrogen content in vanadium iron nitride by inert gas melting thermal conductivity method
YB/T 4529-2016 Determination of nitrogen content in manganese iron nitride by inert gas melting thermal conductivity method
YB/T 4565-2016 Determination of titanium iron nitrogen content by inert gas melting thermal conductivity method

International Dairy Federation (IDF), nitrogen content

IDF 20-5-2001 Milk - Determination of nitrogen content - Part 5: Determination of protein-nitrogen content
IDF 20-4-2001 Milk - Determination of nitrogen content - Part 4: Determination of non-protein-nitrogen content
IDF 20-1-2001 Milk - Determination of nitrogen content - Part 1: Kjeldahl method

Danish Standards Foundation, nitrogen content

DS/EN ISO 8968-4:2002 Milk - Determination of nitrogen content - Part 4: Determination of non-protein nitrogen content
DS/EN ISO 8968-5:2002 Milk - Determination of nitrogen content - Part 5: Determination of protein-nitrogen content
DS/EN 12135:1998 Fruit and vegetable juices - Determination of nitrogen content - Kjeldahl method
DS/EN ISO 4945:2009 Steel - Determination of nitrogen content - Spectrophotometric method
DS 223:1991 Water analysis. Determination of the sum of nitrite- and nitrate-nitrogen
DS/EN ISO 8968-1:2002 Milk - Determination of nitrogen content - Part 1: Kjeldahl method
DS/EN ISO 20483:2007 Cereals and pulses - Determination of the nitrogen content and calculation of the crude protein content - Kjeldahl method

GSO, nitrogen content

OS GSO ISO 8968-5:2014 Milk -- Determination of nitrogen content -- Part 5: Determination of protein-nitrogen content
GSO ISO 8968-5:2014 Milk -- Determination of nitrogen content -- Part 5: Determination of protein-nitrogen content
GSO ISO 4945:2015 Steel -- Determination of nitrogen content -- Spectrophotometric method
OS GSO ISO 4945:2015 Steel -- Determination of nitrogen content -- Spectrophotometric method
GSO ISO 13878:2014 Soil quality -- Determination of total nitrogen content by dry combustion ("elemental analysis")
BH GSO ISO 13878:2016 Soil quality -- Determination of total nitrogen content by dry combustion ("elemental analysis")
OS GSO ISO 10702:2014 Steel and iron -- Determination of nitrogen content -- Titrimetric method after distillation
GSO ISO 10702:2014 Steel and iron -- Determination of nitrogen content -- Titrimetric method after distillation
GSO ISO 937:1987 Meat and meat products -Determination of nitrogen content (Reference method).
OS GSO ISO 937:1987 Meat and meat products -Determination of nitrogen content (Reference method).
BH GSO ISO 937:2015 Meat and meat products -Determination of nitrogen content (Reference method).
GSO ISO 5983:2002 ANIMAL FEEDING STUFFS – DETERMINATION OF NITROGEN CONTENT AND CALCULATION OF CRUDE PROTEIN CONTENT
OS GSO ISO 1656:2015 Rubber, raw natural, and rubber latex, natural -- Determination of nitrogen content
OS GSO ISO 5397:2014 Leather -- Determination of nitrogen content and "hide substance" -- Titrimetric method
GSO ISO 5397:2014 Leather -- Determination of nitrogen content and "hide substance" -- Titrimetric method
BH GSO ISO 1656:2016 Rubber, raw natural, and rubber latex, natural -- Determination of nitrogen content
OS GSO ISO 5313:2009 High nitrogen content, straight ammonium nitrate fertilizers - Determination of oil retention
GSO ISO 8968-4:2021 Milk and milk products — Determination of nitrogen content — Part 4: Determination of protein and non-protein nitrogen content and true protein content calculation (Reference method)
BH GSO ISO 8968-4:2022 Milk and milk products — Determination of nitrogen content — Part 4: Determination of protein and non-protein nitrogen content and true protein content calculation (Reference method)
GSO ISO 20483:2013 Cereals and pulses -- Determination of the nitrogen content and calculation of the crude protein content -- Kjeldahl method
OS GSO ISO 20483:2013 Cereals and pulses -- Determination of the nitrogen content and calculation of the crude protein content -- Kjeldahl method

PH-BPS, nitrogen content

PTS 98-1970 Standardization of the Method of Test for the Determination of Total Nitrogen Content.Devarda Method
PTS 83-1970 Method of Test for the Determination of Nitrogen Content of Nitrate-Free Fertilizers

PT-IPQ, nitrogen content

NP 3646-1987 fertilizer. Measurement of total nitrogen content
NP 1623-1979 Industrial urea. Determination of nitrogen and iron content (volumetric method)
NP EN 12135-2000 Fruit and vegetable juices Determination of nitrogen content Kjeldahl method
NP 1841-1985 fish. Determination of trimethylamine nitrogen content (N-TMA). photometry

BE-NBN, nitrogen content

NBN T 04-301-1983 Urea for industrial use - Determination of nitrogen content - Titrimetric raethod after distillation
NBN-EN ISO 3188:1994 Starches and derived products - Determination of nitrogen content by the Kjeldahl method - Titrimetric method (ISO 3188:1978)
NBN V 21-013-1978 Determination of the total nitrogen contaimng substances content of milk - Amido black method
NBN V 21-003-1987 Milk - Determination of nitrogen content - Kjeldahl method

Indonesia Standards, nitrogen content

SNI 13-3482-1994 Coal, Determination of nitrogen using Kyeldahl method
SNI 13-4721-1998 Methods for determination of total nitrogen content in soils
SNI 06-6323-2000 Determination of total nitrogen content in peat
SNI 19-1501-1989 Test methods for total nitrogen oxide in air
SNI 19-1432-1989 Exhaust-gases, Test methods for nitrogen dioxide content
SNI 19-1502-1989 Test method for nitrogen oxides content of air in working area
SNI 4146-2013 Method for determination of total nitrogen content in sediment by Kjeldahl titration method

CZ-CSN, nitrogen content

CSN 65 0331-1963 Deterimination oí Nierogea by Kjeldahl's method
CSN 65 4814-1976 Determinaíion of nitrogen oontent in fertilizers
CSN 62 3008-1986 Natural raw rubber in blocks. Determination of nitrogen content
CSN 68 4125-1980 DetenninatioQ of small mounts of nitratcs
CSN 42 0566 Cast.7-1987 Chemical analysis of manganese. Determination of nitrogen content
CSN 65 4835-1983 Minerál fertilizers. Determination of ammoniacal nitrogen content by distillating method
CSN 65 4836-1983 Minerál fertilizers Methode for determination of total nitrogen content
CSN 42 0525-1980 Chemical analysis of technical iron. Determination of the nitrogen content
CSN 50 0393-1986 Determination of the content of or- ganic nitrogen in páper and paper- board
CSN 56 0020-1987 General directions for the determination f nitrogen by the Kjeldahl method
CSN 70 4243-1981 Glass apparatus by Parnas-Wagner for the determination of nitrogen

HU-MSZT, nitrogen content

MSZ KGST 1239-1978 Determination of nitrogen content in iron and steel
MSZ 12050/7.lap-1968 Definition detection of latex. Nitrogen content
MSZ KGST 455-1977 Define iron oxide nitrogen content of aluminum oxide
MSZ KGST 451-1977 Define iron oxide nitrogen content of aluminum oxide
MSZ 6117/3-1982 Artificial products with long-lasting effects. Nitrogen content definition
MSZ 6830/4-1981 Determination of nutritional value of feed based on nitrogen content
MSZ 3612/8.lap-1961 Detection of nitrogen content in canned food tomato products
MSZ 6116/8-1981 Multifaceted artificial substance detection. All defined nitrogen contents

Lithuanian Standards Office , nitrogen content

LST EN ISO 8968-5:2002 Milk - Determination of nitrogen content - Part 5: Determination of protein-nitrogen content (ISO 8968-5:2001)
LST EN ISO 8968-4:2002 Milk - Determination of nitrogen content - Part 4: Determination of non-protein nitrogen content (ISO 8968-4:2001)
LST EN 12135-2001 Fruit and vegetable juices - Determination of nitrogen content - Kjeldahl method
LST EN ISO 4945:2010 Steel - Determination of nitrogen content - Spectrophotometric method (ISO 4945:1977)

Professional Standard - Petrochemical Industry, nitrogen content

SH/T 0413-1992 Determination of Trace Basic Nitrogen Content in Liquid Paraffin
SH/T 0224-1992 Determination of Nitrogen Content in Petroleum Additives (Kirsch method)

VE-FONDONORMA, nitrogen content

NORVEN 378 Regulation of nitrogen content in cocoa beans

Jilin Provincial Standard of the People's Republic of China, nitrogen content

DB22/T 1932-2013 Determination method of total nitrogen content in peat (Kjeldahl method)

中华人民共和国国家质量监督检验检疫总局、中国国家标准化管理委员会, nitrogen content

GB/T 34500.5-2017 Chemical analysis methods for rare earth residue and waste water—Part 5：Determination of ammonia nitrogen content
GB/T 15076.13-2017 Methods for chemical analysis of tantalum and niobium—Part 13: Determination of nitrogen content—Inert gas fusion thermal conductivity method
GB/T 34532-2017 Coking wastewater—Determination of ammonia nitrogen content—Formaldehyde method
GB/T 13747.22-2017 Methods for chemical analysis of zirconium and zirconium alloys—Part 22：Determination of oxygen and nitrogen contents—Inert gas fusion-infrared absorption and thermal conductivity method

CU-NC, nitrogen content

NC 24-66-1986 Inorganic Chemical Products Nitrogen. Quality Specifications

FI-SFS, nitrogen content

SFS 3029 E-1976 In the event of any differences in interpretation of this standard the Finnish version shall take precedence over this translation

National Sanitation Foundation (NSF), nitrogen content

NSF 245A-2010 Wastewater Treatment Systems - Nitrogen Reduction

Japanese Industrial Standards Committee (JISC), nitrogen content

JIS G 1228:1997 Iron and steel -- Methods for determination of nitrogen content
JIS K 2609:1998 Crude petroleum and petroleum products -- Determination of nitrogen content
JIS K 0104:2000 Methods for determination of nitrogen oxides in flue gas
JIS G 1228 AMD 1:2006 Iron and steel -- Methods for determination of nitrogen content (Amendment 1)
JIS K 0104:2011 Methods for determination of nitrogen oxides in flue gas
JIS K 6558-6:2016 Leather -- Determination of nitrogen content and "hide substance" -- Titrimetric method
JIS G 1311-7:2012 Method for chemical analysis of ferromanganese -- Part 7: Determination of nitrogen content
JIS G 1313-6:2012 Method for chemical analysis of ferrochromium .Part 6: Determination of nitrogen content

国家市场监督管理总局、中国国家标准化管理委员会, nitrogen content

GB/T 38395-2019 Coal tar—Determination of sulfur and nitrogen content
GB/T 24583.3-2019 Vanadium-nitrogen—Determination of nitrogen content—Distillation-neutralization titration method
GB/T 24583.2-2019 Vanadium-nitrogen—Determination of nitrogen content—Thermal conductimetric method after fusion in a current of inert gas
GB/T 37588-2019 Carbon materials—Determination of nitrogen content—Dumas combustion method
GB/T 40535.1-2021 Test methods of continuous nitride ceramic fibers—Part 1：Nitrogen content
GB/T 17674-2021 Determination of nitrogen in crude oil—Boat-inlet chemiluminescence
GB/T 40723-2021 Rubber—Determination the contents of total sulfur and total nitrogen — Automatic analyser method

AR-IRAM, nitrogen content

IRAM 14 522-1961 How to measure nitrogen content in beer

TN-INNORPI, nitrogen content

NT 14.33-1983 Determination of all nitrogen contents in milk

AENOR, nitrogen content

UNE-EN 12135:1998 Fruit and vegetable juices - Determination of nitrogen content - Kjeldahl method
UNE-EN ISO 4945:2010 Steel - Determination of nitrogen content - Spectrophotometric method (ISO 4945:1977)
UNE 59018:1986 LEATHER. DETERMINATION OF NITROGEN CONTENT AND "HIDE SUBSTANCE". TITRIMETRIC METHOD

CO-ICONTEC, nitrogen content

ICONTEC 1556-1980 Food industry, meat products, measuring nitrogen content

CEN - European Committee for Standardization, nitrogen content

EN ISO 4945:2018 Steel - Determination of nitrogen - Spectrophotometric method
EN ISO 8968-1:2001 Milk - Determination of Nitrogen Content - Part 1: Kjeldahl Method
EN ISO 8968-4:2001 Milk - Determination of Nitrogen Content - Part 4: Determination of Non-Protein Nitrogen Content

SCC, nitrogen content

DANSK DS/EN ISO 4945:2009 Steel – Determination of nitrogen content – Spectrophotometric method
SPC GB/T 37588-2019 Carbon materials -- Determination of nitrogen content -- Dumas combustion method (TEXT OF DOCUMENT IS IN CHINESE)
NS-EN ISO 4945:2009 Steel — Determination of nitrogen content — Spectrophotometric method (ISO 4945:1977)
DANSK DS/EN ISO 20483:2014 Cereals and pulses - Determination of the nitrogen content and calculation of the crude protein content - Kjeldahl method

Professional Standard - Geology, nitrogen content

DZ/T 0279.29-2016 Methods of Analysis of Regional Geochemical Samples Part 29: Nitrogen Determination Kjeldahl Distillation - Volumetric Method

未注明发布机构, nitrogen content

ASTM RR-D31-1008 1996 D2868-Standard Test Method for Nitrogen Content (Kjeldahl) and Hide Substance Content of Leather
ASTM RR-D31-1014 2010 D2868-Test Method for Nitrogen Content (Kjeldahl) and Hide Substance Content of Leather, Wet Blue and Wet White
DIN CEN/TS 17771:2022 Organic and organo-mineral fertilizers - Determination of the nitrogen content

Professional Standard - Aerospace, nitrogen content

QJ 2781A-2004 Determination of the carbon content,the hydrogen content and the nitrogen contene of carbonaceous material
QJ 2781-1995 Method for Determination of Carbon, Hydrogen and Nitrogen Content in Carbon Materials

Shandong Provincial Standard of the People's Republic of China, nitrogen content

DB37/T 2735-2015 Determination of ammonium sulfate content in dry powder fire extinguishing agent Total nitrogen content method

KR-KS, nitrogen content

KS I ISO 13878-2009(2023) Soil quality－Determination of total nitrogen content by dry combustion(“elemental analysis”)
KS H ISO 3188-2008(2023) Starches and derived products－Determination of nitrogen content by the Kjeldahl method－Titrimetric method
KS M ISO 8603-2007 Solid fertilizers－Determination of urea nitrogen content－Gravimetric method using xanthydrol

Professional Standard - Ferrous Metallurgy, nitrogen content

YB/T 4530-2016 Nitrogen-bearing ferromanganese.Determination of nitrogen content.The distillation-neutralization titration method

ES-UNE, nitrogen content

UNE-CEN/TS 17771:2022 Organic and organo-mineral fertilizers - Determination of the nitrogen content (Endorsed by Asociación Española de Normalización in May of 2022.)
UNE-EN ISO 8968-4:2016 Milk and milk products - Determination of nitrogen content - Part 4: Determination of protein and non-protein nitrogen content and true protein content calculation (Reference method) (ISO 8968-4:2016)

GOST, nitrogen content

GOST 31027-2002 Meat and meat products. Determination of nitrogen content (arbitration method)
GOST 2408.2-1975 Brown coals, hard coals, anthracite, combustible shales and turf. Method for thedetermination of nitrogen content
GOST 34789-2021 Brewing products. Identification. Determination of mass concentration of total nitrogen by Kjeldahl method

IX-EU/EC, nitrogen content

80/876/EEC-1980 Council Directive on the Approximation of the Laws of the Member States Relating to Straight Ammonium Nitrate Fertilizers of High Nitrogen Content

Professional Standard - Non-ferrous Metal, nitrogen content

YS/T 904.1-2013 Methods for chemical analysis of iron-chromium-aluminum fiber.Part 1:Determination of nitrogen content.Inert gas fusion thermal conductivity method
YS/T 861.2-2013 Methods for chemical analysis of niobium-titanium alloy.Part 2:Determination of oxygen and nitrogen content.Inert gas fusion infrared/thermal conductivity method

BG-BDS, nitrogen content

BGC ISO 5983:2001 Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Kjeldahl method

Standard Association of Australia （SAA）, nitrogen content

AS 2300.1.2.2:1988 Methods of chemical and physical testing for the dairying industry - General methods and principles - Determination of nitrogen - Nitrogen fractions from milk
AS 2300.1.2.1:1991 Methods of chemical and physical testing for the dairying industry - General methods and principles - Determination of nitrogen - Reference Kjeldahl method
AS ISO 8968.4:2021 Milk and milk products — Determination of nitrogen content, Part 4: Determination of protein and non-protein nitrogen content and true protein content calculation (Reference method)

Henan Provincial Standard of the People's Republic of China, nitrogen content

DB4105/T 179-2021 Technical Regulations on Nitrogen Fertilizer Control for Wheat

Group Standards of the People's Republic of China, nitrogen content

T/NAIA 009-2020 Determination of soil microbial biomass nitrogen
T/GXAS 477-2023 Determination of total nitrogen content in sugarcane juice —sulphuric acid titrimetric method

ES-AENOR, nitrogen content

UNE 59-018-1986 leather. Determination of nitrogen content in cortex. Volume determination

AT-ON, nitrogen content

ONORM M 7455-1990 Fan-assisted gas burners with low NOx-emission; nitrogen oxide measurement

Tianjin Provincial Standard of the People's Republic of China, nitrogen content

DB12/T 1023-2020 Determination of total nitrogen content in organic fertilizers Dumas combustion method