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Industry Nitrogen Content

Industry Nitrogen Content, Total:496 items.

In the international standard classification, Industry Nitrogen Content involves: Fertilizers, Milk and milk products, Company organization and management, Analytical chemistry, Non-ferrous metals, Coals, Organic chemicals, Ferroalloys, Inorganic chemicals, Farming and forestry, Fruits. Vegetables, Animal feeding stuffs, Soil quality. Pedology, Products of the chemical industry, Meat, meat products and other animal produce, Spices and condiments. Food additives, Cereals, pulses and derived products, Leather technology, General methods of tests and analysis for food products, Fuels, Water quality, Food products in general, Beverages, Pulps, Ferrous metals, Raw materials for rubber and plastics, Edible oils and fats. Oilseeds, Protection against fire, External water conveyance systems, Ceramics, Rubber, Sugar. Sugar products. Starch, Aircraft and space vehicles in general, Petroleum products in general, Air quality, Photography, Wastes, Products of the textile industry, Tobacco, tobacco products and related equipment, Construction materials, Tea. Coffee. Cocoa, Conducting materials.

CO-ICONTEC, Industry Nitrogen Content

ICONTEC 1556-1980

German Institute for Standardization, Industry 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 CEN/TS 15750:2008 Fertilizers - Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods; German version CEN/TS 15750:2008
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 51722-1:1990-07 Testing of solid fuels; determination of nitrogen content; semi-micro Kjeldahl method
DIN EN 15476:2009 Fertilizers - Determination of nitric and ammoniacal nitrogen according to Devarda; English version of DIN EN 15476:2009-04
DIN EN 12135:1997-12 Fruit and vegetable juices - Determination of nitrogen content - Kjeldahl method; German version EN 12135:1997
DIN EN ISO 5983-1:2005-10 Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Part 1: Kjeldahl method (ISO 5983-1:2005); German version EN ISO 5983-1:2005
DIN EN ISO 5983-1 Berichtigung 1:2009-07 Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Part 1: Kjeldahl method (ISO 5983-1:2005); German version EN ISO 5983-1:2005, Corrigendum to DIN EN ISO 5983-1:2005-10; German version EN ISO 5983-1:20...
DIN EN ISO 4945:2010 Steel - Determination of nitrogen content - Spectrophotometric method (ISO 4945:1977); German version EN ISO 4945:2009
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 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
DIN EN ISO 11905-1:1998 Water quality - Determination of nitrogen - Part 1: Method using oxidative digestion with peroxodisulfate (ISO 11905-1:1997); German version EN ISO 11905-1:1998
DIN CEN/TS 15561:2007 Fertilizers - Determination of total nitrogen in calcium cyanamide containing nitrates; German version CEN/TS 15561:2007
DIN EN ISO 20483:2014 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 15750:2010 Fertilizers - Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods; German version EN 15750:2009
DIN 53308:1968 Testing of leather; determination of the contents of total nitrogen and of ammonium salts, calculation of hide substance
DIN ISO 11261:1997 Soil quality - Determination of total nitrogen - Modified Kjeldahl method (ISO 11261:1995)
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 3188:1994-10 Starches and derived products - Determination of nitrogen content by the Kjeldahl method - Titrimetric method (ISO 3188:1978); German version EN ISO 3188:1994
DIN ISO 14255:1998 Soil quality - Determination of nitrate nitrogen, ammonium nitrogen and total soluble nitrogen in air-dry soils using calcium chloride solution as extractant (ISO 14255:1998)
DIN EN ISO 20483:2007 Cereals and pulses - Determination of the nitrogen content and calculation of the crude protein content - Kjeldahl method (ISO 20483:2006); German version EN ISO 20483:2006
DIN ISO 13878:1998 Soil quality - Determination of total nitrogen content by dry combustion ("elemental analysis") (ISO 13878:1998)

British Standards Institution (BSI), Industry Nitrogen Content

BS EN 15558:2009 Fertilizers - Determination of nitric and ammoniacal nitrogen according to Ulsch
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 15750:2010 Fertilizers. Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods
BS EN 15750:2009 Fertilizers - Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods
BS DD CEN/TS 15478:2006 Fertilizers - Determination of total nitrogen in urea
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 15476:2009 Fertilizers - Determination of nitric and ammoniacal nitrogen according to Devarda
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 ISO 27871:2011 Cheese and processed cheese. Determination of the nitrogenous fractions
BS EN 15559:2009 Fertilizers - Determination of nitric and ammoniacal nitrogen according to Arnd
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 ISO 17997-2:2005 Milk - Determination of casein-nitrogen content - Direct method
DD ISO/TS 17837:2008 Milk and milk products. Determination of nitrogen content and crude protein calculation. Kjeldahl method
BS 4258-10:1978 Methods of test for phosphoric acid (orthophosphoric acid) for industrial use - Determination of oxides of nitrogen content
BS ISO 17997-2:2004 Milk. Determination of casein-nitrogen content - Direct method
BS DD CEN/TS 15561:2007 Fertilizers - Determination of total nitrogen in calcium cyanamide containing nitrates
BS EN 15561:2009 Fertilizers - Determination of total nitrogen in calcium cyanamide containing nitrates
BS 5551-4.1.1:1981 Fertilizers - Chemical analysis - Determination of nitrogen - Nitron gravimetric method for determination of nitrate nitrogen
BS 5551 SubSec.4.1.3:1986 Fertilizers. Chemical analysis. Determination of nitrogen. Method for determination of total nitrogen content (titrimetric method after distillation)
BS EN ISO 20483:2006 Cereals and pulses - Determination of the nitrogen content and calculation of the crude protein content - Kjeldahl method
BS 4267-2:1988 Ammonium nitrate - Method for determination of total nitrogen content
PD CEN/TS 17771:2022 Organic and organo-mineral fertilizers. Determination of the nitrogen content
BS EN ISO 5983-1:2005 Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Kjeldahl method
BS EN ISO 20483:2013 Cereals and pulses. Determination of the nitrogen content and calculation of the crude protein content. Kjeldahl method
BS 5551-4.1.3:1986 Fertilizers. Chemical analysis. Determination of nitrogen. Method for determination of total nitrogen content (titrimetric method after distillation)
BS DD CEN/TS 15407:2006 Solid recovered fuels - Method for the determination of carbon (C), hydrogen (H) and nitrogen (N) content
BS 4267-1:1988 Ammonium nitrate - Method for determination of ammoniacal nitrogen content
BS ISO 17997-1:2005 Milk - Determination of casein-nitrogen content - Indirect method (Reference method)

PT-IPQ, Industry Nitrogen Content

NP 1273-1976
NP 1359-1976
NP 3646-1987
NP 1314-1976
NP 3779-1988 Leather Determination of nitrogen content and hide substance. Titrimetric method
NP 1274-1976
NP 1233-1976
NP 1996-2000 Cereals and pulses Determiantion of the nitrogen content and calculation of the raw protein content Kjeldhal method
NP 4154-1991 Animal feeding stuffs Determination of volatile nitrogenous bases. Distillation méthod
NP EN 12135-2000 Fruit and vegetable juices Determination of nitrogen content Kjeldahl method
NP 1612-2002 Meat and meat products Determination of nitrogen content Reference method
NP 1623-1979
E 211-1967

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

GB/T 36895-2018 Water saving enterprises—Nitrogenous fertilizer industry
GB/T 24583.3-2019 Vanadium-nitrogen—Determination of nitrogen content—Distillation-neutralization titration method
GB/T 38395-2019 Coal tar—Determination of sulfur and nitrogen content
GB/T 24583.2-2019 Vanadium-nitrogen—Determination of nitrogen content—Thermal conductimetric method after fusion in a current of inert gas
GB/T 40535.1-2021 Test methods of continuous nitride ceramic fibers—Part 1：Nitrogen content
GB/T 24583.7-2019 Vanadium-nitrogen—Determination of oxygen content—Infrared absorption method
GB/T 37588-2019 Carbon materials—Determination of nitrogen content—Dumas combustion method
GB/T 24583.6-2019 Vanadium-nitrogen—Determination of sulfur content—Infrared absorption method
GB/T 24583.4-2019 Vanadium-nitrogen—Determination of carbon content—Infrared absorption method

CZ-CSN, Industry Nitrogen Content

CSN ISO 1871:1994 Agricultural food products-General directions for the determination of nitrogen by the Kjeldahl method
CSN 65 0331-1963 Deterimination oí Nierogea by Kjeldahl's method
CSN 65 4814-1976 Determinaíion of nitrogen oontent in fertilizers
CSN 56 0020-1987 General directions for the determination f nitrogen by the Kjeldahl method
CSN 62 3008-1986 Natural raw rubber in blocks. Determination of nitrogen content
CSN 42 0566 Cast.7-1987 Chemical analysis of manganese. Determination of nitrogen content
CSN 70 4243-1981 Glass apparatus by Parnas-Wagner for the determination of nitrogen
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

Korean Agency for Technology and Standards (KATS), Industry Nitrogen Content

KS M 1922-2002(2007) Urea for industrial use－Determination of nitrogen content－Titrimetric method after distillation
KS M ISO 4176-2006(2011) Fertilizers－Determination of nitrate nitrogen content－Nitron gravimetric method
KS M 1922-2009 Urea for industrial use－Determination of 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 M ISO 5397:2002 Leather－Determination of nitrogen content and “hide substance”－Titrimetric method
KS H ISO 1871-2013(2018) Agricultural food products ― General directions for the determination of nitrogen by the Kjeldahl method
KS M ISO 3332:2012 Ammonium sulphate for industrial use－Determination of ammoniacal nitrogen content－Titrimetric method after distillation
KS M ISO 3332-2017(2022) Ammonium sulphate for industrial use — Determination of ammoniacal nitrogen content — Titrimetric method after distillation
KS M ISO 3332:2017 Ammonium sulphate for industrial use — Determination of ammoniacal nitrogen content — Titrimetric method after distillation
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 H ISO 3188-2008(2018) Starches and derived products－Determination of nitrogen content by the Kjeldahl method－Titrimetric method
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 H ISO 5378-2008(2018) Starches and derived products－Determination of nitrogen content by the Kjeldahl method－Spectrophotometric method
KS M ISO 4176:2012 Fertilizers－Determination of nitrate nitrogen content－Nitron gravimetric method
KS D ISO 10702:2002 Steel and iron－Determination of nitrogen content－Titrimetric method after distillation
KS B 5360-1990 Continuous Analysers for Oxides of Nitrogen in Ambient Air
KS M ISO 5315-2007(2012) Fertilizers－Determination of total nitrogen content－Titrimetric method after distillation
KS B 5360-2001 Continuous Analysers for Oxides of Nitrogen in Ambient Air
KS M ISO 6851:2002 Photography-Processing waste-Determination of total amino nitrogen-Microdiffusion Kjeldahl method
KS I ISO 13878:2009 Soil quality－Determination of total nitrogen content by dry combustion(“elemental analysis”)
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 2112-2011 Crude petroleum and petroleum products-Determination of nitrogen content
KS M ISO 5313:2007 High nitrogen content, straight ammonium nitrate fertilizers-Determination of oil retention
KS M ISO 5315:2007 Fertilizers-Determination of total nitrogen content-Titrimetric method after distillation
KS M ISO 1656:2010 Rubber, raw natural, and rubber latex, natural-Determination of nitrogen content
KS M ISO 5313:2013 High nitrogen content, straight ammonium nitrate fertilizers－Determination of oil retention
KS M ISO 5315:2013 Fertilizers－Determination of total nitrogen content－Titrimetric method after distillation
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 I ISO 13878-2009(2019) Soil quality－Determination of total nitrogen content by dry combustion(“elemental analysis”)
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 M ISO 16948:2021 Solid biofuels — Determination of total content of carbon, hydrogen and nitrogen

International Organization for Standardization (ISO), Industry Nitrogen Content

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 1592:1977 Urea for industrial use; Determination of nitrogen content; Titrimetric method after distillation
ISO 3331:1975 Ammonium nitrate for industrial use — Determination of total nitrogen content — Titrimetric method after distillation
ISO 2991:1974 Nitric acid for industrial use; Determination of ammoniacal nitrogen content; Spectrophotometric method
ISO 5397:1984 Leather; Determination of nitrogen content and "hide substance"; Titrimetric method
ISO 8968-1:2001 | IDF 20-1: 2001 Milk — Determination of nitrogen content — Part 1: Kjeldahl method
ISO 3330:1975 Ammonium nitrate for industrial use; Determination of ammoniacal nitrogen content; Titrimetric method after distillation
ISO 3332:1975 Ammonium sulphate for industrial use; Determination of ammoniacal nitrogen content; Titrimetric method after distillation
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 2515:1973 Ammonium hydrogen carbonate for industrial use (including foodstuffs); Determination of ammoniacal nitrogen content; Volumetric method after distillation
ISO 4945:1977 Steel; Determination of nitrogen content; Spectrophotometric method
ISO 4945:2018 Steel - Determination of nitrogen - Spectrophotometric method
ISO 5983:1979 Animal feeding stuffs; Determination of nitrogen content and calculation of crude protein content
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 2899:1974 Sulphuric acid and oleums for industrial use; Determination of ammoniacal nitrogen content; Spectrophotometric method
ISO 914:1977 Sulphuric acid and oleum for industrial use; Determination of total nitrogen content; Titrimetric method after distillation
ISO 4176:1981 Fertilizers; Determination of nitrate nitrogen content; Nitron gravimetric method
ISO 1871:2009 Food and feed products - General guidelines for the determination of nitrogen by the Kjeldahl method
ISO/TS 17837:2008 | IDF/RM 25: 2008 Processed cheese products — Determination of nitrogen content and crude protein calculation — Kjeldahl method
ISO 8968-1:2001 Lait - Détermination de la teneur en azote - Partie 1: Méthode Kjeldahl (Deuxième édition)
ISO 937:1978 Meat and meat products; Determination of nitrogen content (Reference method)
ISO 8968-1:2001|IDF 20-1:2001 Determination of milk nitrogen content Part 1: Kjeldahl method
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 8603:1993 Solid fertilizers; determination of urea nitrogen content; gravimetric method using xanthydrol
ISO 10702:1993 Steel and iron; determination of nitrogen content; titrimetric method after distillation
ISO 5315:1984 Fertilizers; Determination of total nitrogen content; Titrimetric method after distillation
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 20483:2013 Cereals and pulses.Determination of the nitrogen content and calculation of the crude protein content.Kjeldahl method

RO-ASRO, Industry Nitrogen Content

SR 184-25-1998 Ethyl alcohol. Determination of ammonia and azotic bases nitrogen content
STAS 6843-1982 STEELS ANI) CAST 1RONS Determination of nitrogen content
SR ISO 4176:1981 Fertilizers. Determination of nitrate nitrogen content. Nitrogen gravimetric method
STAS 6182/4-1979 WINE Determination of total nitrogen content
STAS 7184/2-1985 SOILS Nitrogen content determination
STAS 7425-1979 NITROCELLULOSES Determination of nitrogen content
STAS SR 12271-6-1994
STAS 8613/6-1980 CONCENTRATED FOODSTUFF Determination of nitrogen content
STAS SR 13325-1995 Animal feeding stuffs - Determination of total nitrogen content and calculation of crude protein content
STAS 8854-1972 ADDITIVES FOR MINERAL OILS Determination of nitrogen content
STAS 7312-1983 SURFACE AND RESIDUAL WATERS Determination of azote content
STAS SR 4895-5-1997 Tobacco and tobacco products. Determination of total nitrogen content
SR ISO 6685:1996 Chemical products for industrial use-General method for determination of iron content - 1,10 - Phenanthroline spectrophotometric method
SR ISO 5315:1984 Fertilizers. Determination of totai nitrogen content.Titrimetric method after distilation
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

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China, Industry Nitrogen Content

GB/T 6625-1986 Test methods for nitrogen content of nitrogen-doped getter
GB/T 3597-2002 Fertilizer--Determination of nitrate nitrogen content--Nitron gravimetric method
GB/T 9695.11-1988 Meat and meat products--Method for determination of nitrogen content
GB/T 9695.11-2008 Meat and meat products.Determination of nitrogen content
GB/T 24583.3-2009 Vanadium-Nitrogen alloy.Determination of nitrogen content.The distillation-neutralization titration 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 24583.2-2009 Vanadium-Nitrogen alloy.Determination of nitrogen content.Thermal conductimetric method after fusion in a current of inert gas
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/T 9823-1988 Method for determination of total nitrogen content in oilseed residues
GB/T 2441.1-2001 Determination of urea-Determination of total nitrogen content
GB/T 5511-2008 Cereals and pulses.Determination of the nitrogen content and calculation of the crude protein content.Kjeldahl method
GB/T 41965-2022 Photography—Processing waste—Determination of total amino nitrogen(microdiffusion Kjeldahl method)
GB/T 3600-2000 Fertilizers-Determination of ammoniacal nitrogen content-Formaldehyde method
GB/T 12091-1989 Method for determination of nitrogen content in starches and derived products
GB/T 8088-1999 Rubber,raw natural and rubber latex,natural--Determination of nitrogen content
GB/T 13598-1992 A method for the determination of agricultural chemical residues containing nitrogenous in tobacco leaves
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 14605-1993 Determination of trace argon, nitrogen and krypton inoxygen. Gas chromatographic method
GB/T 3598-1983 Fertilizers--Determination of urea nitrogen content--Urease method
GB/T 23835.12-2009 Lithium perchlorate anhydrous.Part 12:Determination of total nitrogen content
GB/T 24583.4-2009 Vanadium.Nitrogen alloy.Determination carbon of content.The infrared absorption method
GB/T 24583.6-2009 Vanadium-Nitrogen alloy.Determination of sulfur content.The infrared absorption method
GB/T 24583.7-2009 Vanadium-Nitrogen alloy.Determination of oxygen content.The infrared absorption method

RU-GOST R, Industry Nitrogen Content

GOST 8775.4-1987 Lithium. Method of determination of nitrogen
GOST R 50568.1-1993 Urea for industrial use. Determination of nitrogen content. Titrimetric method after distillation
GOST 15933.11-1970 Ferroniobium. Method for the determination of nitrogen content
GOST 21600.6-1983 Ferrochrome. Method for the determination of nitrogen
GOST 32467-2013 Urea for industrial use. Determination of nitrogen content. Titrimetric method after distillation
GOST 34111-2017 Juice products. Determination of nitrogen content by Kjeldahl method
GOST 26107-1984 Soils. Methods for determination of total nitrogen
GOST 27894.3-1988 Peat and products of its proccesing for agriculture. Methods for determination of ammonia nitrogen
GOST 20851.2-1975 Mineral fertilizers. Methods for determination of phosphates
GOST EN 15750-2016 Fertilizers. Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods
GOST EN 15478-2013 Fertilizers. Determination of total nitrogen in urea
GOST 30181.3-1994 Mineral fertilizers. Method for determination of mass fraction of nitrogen in fertilizers with nitrate nitrogen
GOST 29302-1992 Ammonium nitrate for industrial use. Method for determination of total nitrogen content (titrimetric) after distillation
GOST 13301-1967 Organic chemical products. Method of test for microdetermination of nitrogen
GOST 20851.1-1975 Mineral fertilizers. Methods for determination of nitrogen content
GOST R 55246-2012 Milk and milk products. Determination of non-protein nitrogen content by Kjeldahl method
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 30181.6-1994 Mineral fertilizers. Method for determination of mass fraction of nitrogen in ammonium salts (in ammonium form, using the formaldehyde method)
GOST 12359-1999 Carbon, alloyed and high-alloyed steels. Methods for determination of nitrogen
GOST 22720.4-1977 Rare metals and their alloys. Method for the determination of nitrogen
GOST 12359-1981 Steels carbon, alloyed and highalloyed. Methods for the determination of nitrogen
GOST EN 15561-2013 Fertilizers. Determination of total nitrogen in calcium cyanamide containing nitrates
GOST R 51438-1999 Fruit and vegetable juices. Kjeldahl method for determination of nitrogen content
GOST 10671.4-1974 Reagents. Methods for determination of nitrogen compaunds impurity general content
GOST R 55282-2012 Raw milk. The colorimetric method of urea content determination
GOST 30181.4-1994 Mineral fertilizers. Method for determination of total mass fraction of nitrogen in compound fertilizers and nitrale fertilizers in ammonium and nitrate forms (Deward Method)
GOST R 50453-1992 Meat and meat products. Determination of nitrogen content (Reference method)
GOST R 54234-2010 Solid recovered fuels. Determination of carbon, hydrogen and nitrogen content by instrument methods

ZA-SANS, Industry Nitrogen Content

SANS 333:1996 Coal - Determination of nitrogen - Semi-micro Kjeldahl method
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 970:2010 Leather - Determination of nitrogen content and "hide substance" - Titrimetric method
SANS 8968-1:2006 Milk - Determination of nitrogen content Part 1: Kjeldahl method

Association Francaise de Normalisation, Industry Nitrogen Content

NF V04-221-5:2002 Milk - Determination of nitrogen content - Part 5 : determination of protein-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 V04-221-4:2002 Milk - Determination of nitrogen content - Part 4 : determination of non-protein nitrogen content.
NF T20-286:1982 Nitric acid for industrial use. Determination of ammoniacal nitrogen content. Spectrophotometric 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 U42-191:1988 Fertilizers. Nitrogenous fertilizers containing synthetic organic nitrogen. Determination of the types of nitrogen.
NF V59-202:1988 Collagenes. Determination of the nitrogen content.
NF EN ISO 20483:2014 Céréales et légumineuses - Détermination de la teneur en azote et calcul de la teneur en protéines brutes - Méthode de Kjeldahl
NF U42-503*NF EN 15750:2010 Fertilizers - Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods
NF X31-111*NF ISO 11261:1995 Soil quality. Determination of total nitrogen. Modified kjeldahl method.
NF V03-750:2007 Cereals and pulses - Determination of the nitrogen content and calculation of the crude protein content - Kjeldahl method.
NF EN 15750:2010 Engrais - Détermination de la teneur en azote total des engrais ne contenant l'azote que sous forme nitrique, ammoniacale et uréique, selon deux méthodes différentes
NF EN ISO 5983-1:2005 Aliments des animaux - Détermination de la teneur en azote et calcul de la teneur en protéines brutes - Partie 1 : méthode Kjeldahl
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 EN ISO 8968-1:2014 Lait et produits laitiers - Détermination de la teneur en azote - Partie 1 : méthode Kjeldahl et calcul de la teneur en protéines brutes
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 EN ISO 8968-4:2016 Lait et produits laitiers - Détermination de la teneur en azote - Partie 4 : détermination de la teneur en azote protéique et non protéique et calcul de la teneur en protéines vraies (Méthode de référence)
NF V04-279*NF ISO 27871:2011 Cheese and processed cheese - Determination of nitrogenous fractions
NF U42-151:1984 Fertilizers. Determination of total nitrogen content. Titrimetric method after distillation.
NF V04-221-4*NF 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)
NF X31-418*NF ISO 13878:1998 Soil quality. Determination of total nitrogen content by dry combustion ("elemental analysis").
NF X31-115:2001 Soil quality - Sampling and storage of soil samples in view of determination of mineral nitrogen on fresh soil.
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 X34-117*NF EN ISO 16948:2015 Solid biofuels - Determination of total content of carbon, hydrogen and nitrogen
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
XP CEN/TS 17771:2022 Engrais organiques et organo-minéraux - Détermination de la teneur en azote
NF T20-482:1979 Phosphoric acid for industrial use (including foodstuffs. Determination of oxides of nitrogen content ). 3,4-xylenol spectrophotometric method.
NF V03-750*NF EN ISO 20483:2014 Cereals and pulses - Determination of the nitrogen content and calculation of the crude protein content - Kjeldahl method
NF ISO 13878:1998 Qualité du sol - Détermination de la teneur totale en azote par combustion sèche ("analyse élémentaire")
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.

International Dairy Federation (IDF), Industry 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, Industry 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 ISO 20483:2007 Cereals and pulses - Determination of the nitrogen content and calculation of the crude protein content - Kjeldahl method
DS/EN ISO 8968-1:2002 Milk - Determination of nitrogen content - Part 1: Kjeldahl method
DS/EN 12135:1998 Fruit and vegetable juices - Determination of nitrogen content - Kjeldahl method
DS/EN ISO 5983-1/AC:2009 Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Part 1: Kjeldahl method
DS/EN ISO 5983-1:2005 Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Part 1: Kjeldahl method
DS/EN ISO 4945:2009 Steel - Determination of nitrogen content - Spectrophotometric method
DS/EN ISO 3188:1995 Starches and derived products - Determination of nitrogen content by the Kjeldahl method - Titrimetric method
DS/EN ISO 5378:1995 Starches and derived products - Determination of nitrogen content by the Kjeldahl method - Spectrophometric method

PL-PKN, Industry Nitrogen Content

PN C04576 ArkusZ14-1973 Water and w?sie water Tes?s for nitrogen Calcula?ion of to?al nitrogen
PN C87077-1992 Nitrogenous fertilizers. Determination of cooper
PN A86026-1990 Milk and dairy products Milk powdcr Determination of nitritc and nitrate contents
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 H04232-08-1986 Chemical analysis of alloy components Chromium metallic Determination of nitrogen

Professional Standard - Agriculture, Industry Nitrogen Content

NY/T 1116-2014 Fertilizers.Determination of nitrate nitrogen, ammonium nitrogen, amide nitrogen contents
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
219药典三部-2020 Content Determination Method 0704 Nitrogen Determination Method
GB 8088-1987 Determination of Nitrogen Content in Natural Raw Rubber
GB 8572-1988 Determination of total nitrogen content in compound fertilizer
HJ 1302-2023 Guidance on Feasible Technologies for the Prevention and Control of Nitrogen Fertilizer Industrial Pollution
NY/T 1977-2010 Water-suluble fertilizers-Determination of total nitrogen, phosphorus and potassium content
200药典三部-2015 Content Determination Method 0704 General Principles of Nitrogen Determination Method 49
GB 3598-1983 Determination of Urea Nitrogen Content in Fertilizers Urease Method

NL-NEN, Industry Nitrogen Content

NEN 6642-1992 Water-Calculation of total nitrogen content
NEN 6482-1982 Water - Determination of the sum of ammoniacal and organically bound nitrogen according to Kjeldahl after mineralization with selenium
NEN 6481-1983 Water - Determination of the sum of ammoniacal and organically bound nitrogen according to Kjeldahl after mineralization with selenium
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 6646-1990 Water - Photometric determination of the content of ammonium nitrogen and of the sum of the contents of ammoniacal and organically bound nitrogen according to Kjeldahl by continuous flow analysis
NEN 6641-1983 Sludge - Determination of the sum of ammoniacal and organically bound nitrogen according to Kjeldahl after mineralization with selenium
NEN 6622-1988 Sludge - Determination of sand and other acidinsoluble material, and the fraction with a partiele size greater than 0,1 mm - Gravimetric method

YU-JUS, Industry Nitrogen Content

JUS H.B8.637-1981 Sulphuric acid for industrial use. Determination of ammoniacal nitrogen content. Spectrophotometric method
JUS H.F8.131-1986 Gases. Determination of nitrogen content. Indirect 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.B8.286-1983 Fertilizers. Determination of content nitrat-nitrogen. Volumetric method
JUS H.B8.285-1983 Fertilizers. Determination of content amoniac-nitrogen. Volumetric method
JUS H.B8.814-1992 Straight ammonium nitrate fertilizers of high nitrogen content - Determination of the chloride content (as chlorine ion)
JUS H.G8.457-1991 Reagents. Potassium sulpbate. Determination of total nltrogen content. Colorlmetrlc metho?
JUS H.G8.083-1983 Reagents. Sodium chloride. Determination of total nitrogen content. Colorimetric method
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.B8.815-1992 Straight ammonium nitrate fertilizers of high nitrogen content - Determination of copper content - Atomic absorption spectrophotometric 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.G8.415-1991 Reagents. So?ium hydroxide. 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.G8.447-1990 Reagents. Zine sulphate heptahydrate. Determination of total nitrogen content. Colorimetric method
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.B8.816-1992 Straight ammonium nitrate fertilizers of high nitrogen content - Determination of resistance to detonation

TR-TSE, Industry Nitrogen Content

TS 2466-1976 Nitric Acit For Industrial Use Determination of Ammoniacal Nitrogen Content Spectrophotoraetric Method
TS 2918-1978 PHOSPHORIC ACID FOR INDUSTRIAL USE (INCLUDING FOODSTUFFS) — DETERMINATION OF OXIDES OF NITROGEN CONTENT — 3,4 — XYLENOL SPECTROPHOTOMETRY
TS 2428-1976 METHODS FOR THE CHEMICAL ANALYSIS OF IRON AND STEELS DETERMINATION OF NITROGEN CONTENT

BE-NBN, Industry Nitrogen Content

NBN T 04-301-1983 Urea for industrial use - Determination of nitrogen content - Titrimetric raethod after distillation
NBN T 03-056-1979 Ammonium nitrate for industrial use - Determination of total nitrogen content - Titrimetric method after distillation
NBN T 03-041-1979 Nitric acid for industrial use - Determination of ammoniacal nitrogen content - Spectrophotometric method
NBN T 03-069-1979 Ammonium sulphate for industrial use - Determination of ammoniacal nitrogen content - Titrimetric method after distillation
NBN T 03-019-1979 Sulphuric acid and oleum for industrial use - Determination of total nitrogen content - Titrimetric method after distillation
NBN T 04-304-1983 Urea for indus trial use - Determination of iron content-2,2'-Bipyridyl photometric method
NBN V 21-003-1987 Milk - Determination of nitrogen content - Kjeldahl method
NBN T 03-081-1979 Ammonium hydrogen carbonate for industrial use (including food-stuffs) - Determination of ammoniacal nitrogen content - Titrimetric method after distillation
NBN T 03-024-1979 Sulphuric acid and oleum for industrial use - Determination of ammoniacal nitrogen content - Spectrophotometric method
NBN V 21-013-1978 Determination of the total nitrogen contaimng substances content of milk - Amido black method

European Committee for Standardization (CEN), Industry Nitrogen Content

PD CEN/TS 15750:2008 Fertilizers - Determination of different forms of nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods
EN ISO 8968-5:2001 Milk - Determination of nitrogen content - Part 5: Determination of protein-nitrogen content (ISO 8968-5:2001)
EN 15476:2009 Fertilizers - Determination of nitric and ammoniacal nitrogen according to Devarda
EN 15750:2009 Fertilizers - Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods
EN ISO 4945:2009 Steel - Determination of nitrogen content - Spectrophotometric method (ISO 4945:1977)
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)
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 20483:2013 Cereals and pulses - Determination of the nitrogen content and calculation of the crude protein content - Kjeldahl method

BG-BDS, Industry Nitrogen Content

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

工业和信息化部, Industry Nitrogen Content

YB/T 4779-2019 Determination of nitrogen content in vanadium-nitrogen alloys by pulse heating inert gas melting-time-of-flight mass spectrometry (conventional method)
YB/T 4582.7-2017 Determination of total nitrogen content of ferrous silicon nitride by neutralization titration method
YB/T 4528-2016 Determination of nitrogen content in ferrochromium nitride and high nitrogen ferrochrome by inert gas melting thermal conductivity 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 4566.2-2016 Determination of nitrogen content of vanadium iron nitride, distillation and separation-acid-base neutralization titration method
YB/T 4582.1-2017 Determination of calcium iron silicon nitride content EDTA titration method
YB/T 4582.5-2017 Determination of ferrosilicon aluminum nitride content EDTA titration method
YB/T 4566.5-2016 Determination of vanadium ferrosilicon content by sulfuric acid dehydration gravimetric method
YB/T 4582.8-2017 Determination of silicon content in ferrosilicon nitride perchloric acid dehydration gravimetric method

Jilin Provincial Standard of the People's Republic of China, Industry Nitrogen Content

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

Indonesia Standards, Industry 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 4146-2013
SNI 19-1432-1989 Exhaust-gases, Test methods for nitrogen dioxide content
SNI 7617-2013
SNI 19-1502-1989 Test method for nitrogen oxides content of air in working area

HU-MSZT, Industry Nitrogen Content

Lithuanian Standards Office , Industry 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 20483:2007 Cereals and pulses - Determination of the nitrogen content and calculation of the crude protein content - Kjeldahl method (ISO 20483:2006)
LST EN ISO 5983-1:2005 Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Part 1: Kjeldahl method (ISO 5983-1:2005)
LST EN ISO 8968-1:2002 Milk - Determination of nitrogen content - Part 1: Kjeldahl method (ISO 8968-1:2001)
LST EN ISO 5983-1:2005/AC:2009 Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Part 1: Kjeldahl method (ISO 5983-1:2005/Cor 1:2008)
LST EN ISO 4945:2010 Steel - Determination of nitrogen content - Spectrophotometric method (ISO 4945:1977)
LST EN ISO 3188:2000 Starches and derived products - Determination of nitrogen content by the Kjeldahl method - Titrimetric method (ISO 3188:1978)

KR-KS, Industry Nitrogen Content

KS M ISO 3332-2017 Ammonium sulphate for industrial use — Determination of ammoniacal nitrogen content — Titrimetric method after distillation
KS M ISO 8603-2007 Solid fertilizers－Determination of urea nitrogen content－Gravimetric method using xanthydrol
KS M ISO 16948-2021 Solid biofuels — Determination of total content of carbon, hydrogen and nitrogen

Military Standard of the People's Republic of China-General Armament Department, Industry Nitrogen Content

GJB 212.16-1986 Special industrial leather - Determination of nitrogen content and "skin" - Titration method
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

VN-TCVN, Industry 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 6091-2004 Rubber, raw natural and rubber latex, natural.Determination of nitrogen content
TCVN 7373-2004 Soils quality.Index values of total nitrogen content in the soils of Vietnam
TCVN 3705-1990 Aquatic products.Method for the determination of total nitrogen and protein content
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

VE-FONDONORMA, Industry Nitrogen Content

NORVEN 378

Japanese Industrial Standards Committee (JISC), Industry Nitrogen Content

JIS H 1685:1976 Methods for determination of nitrogen in tantalum
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 0104:1984 Methods for determination of oxides of nitrogen in flue gases
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 B 7953:1997 Continuous analysers for oxides of nitrogen in ambient air

Professional Standard - Military and Civilian Products, Industry Nitrogen Content

WJ 2128-1993 Method for Determination of Nitrogen Content in Primer

Taiwan Provincial Standard of the People's Republic of China, Industry Nitrogen Content

CNS 1289-1960 Method of Test for Leather (Nitrogen Content Test)
CNS 9321-1992 Method of Test for Iron in Pulp`6rortho-phenanthroline photometric method`6s}E8}E8}E8}E8

Professional Standard - Ferrous Metallurgy, Industry Nitrogen Content

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

AENOR, Industry Nitrogen Content

UNE-EN 12135:1998 Fruit and vegetable juices - Determination of nitrogen content - Kjeldahl method
UNE-EN ISO 20483:2014 Cereals and pulses - Determination of the nitrogen content and calculation of the crude protein content - Kjeldahl method (ISO 20483:2013)
UNE-EN ISO 5983-1:2007 Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Part 1: Kjeldahl method (ISO 5983-1:2005)
UNE-EN ISO 4945:2010 Steel - Determination of nitrogen content - Spectrophotometric method (ISO 4945:1977)
UNE-EN ISO 3188:1995 STARCHES AND DERIVED PRODUCTS. DETERMINATION OF NITROGEN CONTENT BY THE KJELDAHL METHOD. TITRIMETRIC METHOD. (ISO 3188:1978).
UNE 59018:1986 LEATHER. DETERMINATION OF NITROGEN CONTENT AND "HIDE SUBSTANCE". TITRIMETRIC METHOD

American Society for Testing and Materials (ASTM), Industry Nitrogen Content

ASTM D4795-94(2003) Standard Test Method for Nitrogen Content of Soluble Nitrocellulose8212;Alternative Method
ASTM D4795-94(2008) Standard Test Method for Nitrogen Content of Soluble Nitrocellulosex2014;Alternative Method
ASTM D2868-17 Standard Test Method for Nitrogen Content (Kjeldahl) and Hide Substance Content of Leather, Wet Blue and Wet White
ASTM D3533-90(1995)e1 Standard Method of Rubber8212;Nitrogen Content
ASTM D3533-90(2001) Standard Test Method for Rubber8212;Nitrogen Content
ASTM D2868-96 Standard Test Method for Nitrogen Content (Kjeldahl) and Hide Substance Content of Leather
ASTM D2868-96(2001) Standard Test Method for Nitrogen Content (Kjeldahl) and Hide Substance Content of Leather
ASTM D2868-10 Standard Test Method for Nitrogen Content (Kjeldahl) and Hide Substance Content of Leather
ASTM D3533-05 Standard Test Method for Rubber—Nitrogen Content
ASTM D2868-07 Standard Test Method for Nitrogen Content (Kjeldahl) and Hide Substance Content of Leather

Compressed Gas Association (U.S.), Industry Nitrogen Content

CGA SA-25-2013 Hazards of liquid nitrogen in the food and beverage industry

TH-TISI, Industry Nitrogen Content

TIS 1771-1999 Ammonium sulphate for industrial use.determination of ammoniacal nitrogen content.titrimetric method after distillation
TIS 2255.1-2005 Animal feeding stuff s-determination of nitrogen content and calculation of crude protein content.part 1: kjeldahl method

ES-UNE, Industry Nitrogen Content

UNE-EN ISO 5983-1:2007/AC:2009 Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Part 1: Kjeldahl method (ISO 5983-1:2005/Cor 1:2008)
UNE-CEN/TS 17762:2022 Inorganic fertilizers - Determination of the copper content in ammonium nitrate fertilizers of high 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)
UNE-CEN/TS 17761:2022 Inorganic fertilizers - Determination of the chloride content in ammonium nitrate fertilizers of high nitrogen content (Endorsed by Asociación Española de Normalización in May of 2022.)
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.)

未注明发布机构, Industry Nitrogen Content

BS EN ISO 5983-1:2005(2009) Animal feeding stuffs — Determination of nitrogen content and calculation of crude protein content — Part 1 : Kjeldahl method
BS EN ISO 3188:1994(1999) Starches and derived products — Determination of nitrogen content by the Kjeldahl method — Titrimetric method
BS EN ISO 5378:1994(1999) Starches and derived products — Determination of nitrogen content by the Kjeldahl method — Spectrometric method
DIN EN ISO 8968-1:2002 Milk — Determination of nitrogen content — Part 1: Kjeldahl method (ISO 8968-1:2001)
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)

AR-IRAM, Industry Nitrogen Content

IRAM 14 522-1961

TN-INNORPI, Industry Nitrogen Content

NT 14.33-1983

FI-SFS, Industry 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), Industry Nitrogen Content

NSF 245A-2010 Wastewater Treatment Systems - Nitrogen Reduction

IN-BIS, Industry Nitrogen Content

IS 9005-1988

Shandong Provincial Standard of the People's Republic of China, Industry Nitrogen Content

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

Professional Standard - Commodity Inspection, Industry Nitrogen Content

SN/T 0840-2015 Determination of nitrogen content of urea for import and export
SN/T 0840-1999 Method for the 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

Professional Standard - Building Materials, Industry Nitrogen Content

JC/T 2342-2015 Method for the quantitative phase analysis of silicon nitride

CEN - European Committee for Standardization, Industry Nitrogen Content

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

Professional Standard - Petrochemical Industry, 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)

Professional Standard - Aerospace, Industry 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

Standard Association of Australia （SAA）, Industry Nitrogen Content

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)
AS 2300.4.8:1994 Methods of chemical and physical testing for the dairying industry - Dried milk and dried milk products - Determination of undenatured whey protein nitrogen (UDWPN) in dried skim milk

Natural Gas Processor's Association (NGPA), Industry Nitrogen Content

GPA RR-126-1989 Phase Behavior and Properties of an Aromatic Condensate Containing 20 Mole Percent Nitrogen

CU-NC, Industry Nitrogen Content

NC 24-64-1986 Inorganic Chemical Products Nitrogen, Determination of Oil Content

Professional Standard - Light Industry, Industry Nitrogen Content

QB/T 3812.17-1999 Leather.Determination of nitrogen content and “hide substance”.Titrimtric 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, Industry Nitrogen Content

GB/T 34532-2017 Coking wastewater—Determination of ammonia nitrogen content—Formaldehyde method

GOSTR, Industry Nitrogen Content

GOST 34454-2018 Dairy products. Determination of protein content by the Kjeldahl method

Group Standards of the People's Republic of China, Industry Nitrogen Content

T/CMES 01011-2023 Determination method for content of nitrogen, sulfur and phosphorus in recycled sand for foundry

AT-ON, Industry Nitrogen Content

ONORM DIN 10334-1994 Determination of nitrogen content of milk according to Kjeldahl and calculation of crude protein content

ES-AENOR, Industry Nitrogen Content

UNE 59-018-1986