ZH
RU
ES

Total Nitrogen Determination Method

Total Nitrogen Determination Method, Total:499 items.

In the international standard classification, Total Nitrogen Determination Method involves: Farming and forestry, Coals, Ferroalloys, External water conveyance systems, Water quality, Non-ferrous metals, Analytical chemistry, Soil quality. Pedology, Fertilizers, Leather technology, Metrology and measurement in general, Ferrous metals, Animal feeding stuffs, Milk and milk products, Iron and steel products, Materials for aerospace construction, Fruits. Vegetables, General methods of tests and analysis for food products, Products of the chemical industry, Air quality, Heat treatment, Shipbuilding and marine structures in general, Sugar. Sugar products. Starch, Meat, meat products and other animal produce, Crude petroleum, Petroleum products in general, Fuels, Organic chemicals, Lubricants, industrial oils and related products, Wastes, Beverages, Tea. Coffee. Cocoa, Products of the textile industry, Tobacco, tobacco products and related equipment, Inorganic chemicals, Construction materials, Refractories, Explosion protection, Cutting tools, Semiconducting materials, Mining and quarrying, Rubber and plastics products, Non-metalliferous minerals, Testing of metals, Products of non-ferrous metals, Burners. Boilers, Spices and condiments. Food additives, Powder metallurgy, Aircraft and space vehicles in general, Vocabularies, Photography, Paper and board, Edible oils and fats. Oilseeds, Ceramics, Metalliferous minerals.

British Standards Institution (BSI), Total Nitrogen Determination Method

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 7755-3.7:1995 Soil quality. Chemical methods. Determination of total nitrogen. Modified 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 ISO 17997-2:2005 Milk - Determination of casein-nitrogen content - Direct method
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 ISO 17997-1:2005 Milk - Determination of casein-nitrogen content - Indirect method (Reference method)
BS 5551-4.1.2:1982 Fertilizers. Chemical analysis. Determination of nitrogen. Determination of ammoniacal nitrogen, titrimetric method after distillation
BS 5551 SubSec.4.1.5:1993 Fertilizers. Chemical analysis. Determination of nitrogen. Method for determination of urea nitrogen content (gravimetric method using xanthydrol)
BS 4401-2:1980 Methods of test for meat and meat products. Determination of nitrogen content (reference method)
BS EN 15559:2009 Fertilizers - Determination of nitric and ammoniacal nitrogen according to Arnd
BS 4267-2:1988 Ammonium nitrate - Method for determination of total nitrogen content
BS EN 25663:1993 Water quality. Determination of Kjeldahl nitrogen. Method after mineralization with selenium
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 937:2023 Meat and meat products. Determination of nitrogen content. Reference method
BS EN 15476:2009 Fertilizers - Determination of nitric and ammoniacal nitrogen according to Devarda
DD ENV 12260-1996 Water quality. Determination of nitrogen. Determination of bound nitrogen, after combustion and oxidation to nitrogen dioxide, using chemiluminescence detection
BS ISO 6851:2001 Photography. Processing waste. Determination of total amino nitrogen (microdiffusion Kjeldahl method)
DD ISO/TS 17837:2008 Milk and milk products. Determination of nitrogen content and crude protein calculation. Kjeldahl method
BS DD CEN/TS 15476:2006 Fertilizers - Determination of nitric and ammoniacal nitrogen according to Devarda
BS 5551-4.1.4:1984 Fertilizers. Chemical analysis. Determination of nitrogen. Method for determination of ammoniacal nitrogen content in the presence of other substances which release ammonia when treated with sodium hydroxide (titrimetric method)
BS DD CEN/TS 15750:2009 Fertilizers - Determination of different forms of nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods
BS EN ISO 15351:2010 Steel and iron - Determination of nitrogen content - Thermal conductimetric method after fusion in a current of inert gas (Routine method)
BS EN 15407:2011 Solid recovered fuels. Methods for the determination of carbon (C), hydrogen (H) and nitrogen (N) content
DD CEN/TS 15407:2006 Solid recovered fuels — Method for the determination of carbon (C), hydrogen (H) and nitrogen (N) content
22/30444436 DC BS ISO 937. Meat and meat products. Determination of nitrogen content. Reference method
BS EN 16339:2013 Ambient air. Method for the determination of the concentration of nitrogen dioxide by diffusive sampling
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 6068-2.40:1991 Water quality. Physical, chemical and biochemical methods. Method for the determination of borate by spectrometry using azomethine-H
BS EN ISO 11732:2005 Water quality. Determination of ammonium nitrogen. Method by flow analysis (CFA and FIA) and spectrometric detection
BS 5551-4.1.1:1981 Fertilizers - Chemical analysis - Determination of nitrogen - Nitron gravimetric method for determination of nitrate nitrogen

IN-BIS, Total Nitrogen Determination Method

Liaoning Provincial Standard of the People's Republic of China, Total Nitrogen Determination Method

DB21/T 616-1991 Plant total nitrogen determination method

Professional Standard - Agriculture, Total Nitrogen Determination Method

NY/T 2419-2013 Determination of total nitrogen in plant.Automatic kjeldahl apparatus method
ZB X 66026-1987 Total Nitrogen and Crude Protein Determination
NY/T 1121.24-2012 Soil testing.Part 24:Determination of total nitrogen in soil.Automatic kjeldahl apparatus method
NY/T 53-1987 Method for the determination of soil total nitrogen(Semi-micro Kjeldahl method)
GB 7173-1987 Determination of total nitrogen in soil (semi-micro Kelvin method)
GB 608-1988 General method for chemical reagent nitrogen determination
219药典三部-2020 Content Determination Method 0704 Nitrogen Determination Method
NY/T 297-1995 Determination of Total Nitrogen in Organic Fertilizers
86药典四部-2020 0700 Other determination methods 0704 Nitrogen determination method
105药典四部-2015 0700 Other determination methods 0704 Nitrogen determination method
GB 609-1988 General method for the determination of total nitrogen content of chemical reagents
ZB X 66038-1987 Amino nitrogen determination method
200药典三部-2015 Content Determination Method 0704 General Principles of Nitrogen Determination Method 49
JAP-031 Azaphenanthridine detection method
175药典三部-2010 Appendix VI VIA Nitrogen Determination Method
1789药典一部-2010 Appendix IX L Nitrogen Determination Method
2323药典二部-2010 Appendix VII D Nitrogen Determination Method
811兽药典一部-2015 Appendix Contents 0700 Other Determination Methods 0704 Nitrogen Determination Method
795兽药典二部-2015 Appendix Contents 0700 Other Determination Methods 0703 Nitrogen Determination Method
GB 8088-1987 Determination of Nitrogen Content in Natural Raw Rubber
GB 3597-1983 Determination of nitrate nitrogen content in fertilizers Nitrogen reagent gravimetric method
GB 13025.10-1991 Determination of Ferrous Potassium Nitride General Test Method for Salt Industry

Jilin Provincial Standard of the People's Republic of China, Total Nitrogen Determination Method

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

工业和信息化部, Total Nitrogen Determination Method

YB/T 4582.7-2017 Determination of total nitrogen content of ferrous silicon nitride by neutralization titration method
YB/T 4566.2-2016 Determination of nitrogen content of vanadium iron nitride, distillation and separation-acid-base neutralization titration method
YS/T 1467.10-2021 Hafnium Chemical Analysis Methods Part 10: Determination of Oxygen and Nitrogen Amounts
YB/T 4528-2016 Determination of nitrogen content in ferrochromium nitride and high nitrogen ferrochrome 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 4566.1-2016 Determination of nitrogen content in vanadium iron nitride by inert gas melting thermal conductivity 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

Indonesia Standards, Total Nitrogen Determination Method

SNI 4146-2013
SNI 13-3482-1994 Coal, Determination of nitrogen using Kyeldahl method
SNI 06-0042-1987 Nitrogen, Specification and test method
SNI 19-1501-1989 Test methods for total nitrogen oxide in air

Japanese Industrial Standards Committee (JISC), Total Nitrogen Determination Method

JIS H 1685:2000 Method for determination of nitrogen in tantalum
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 H 1653:1991 Methods for determination of nitrogen in zirconium and zirconium alloys
JIS H 1612:1993 Methods for determination of nitrogen in titanium and titanium alloys
JIS K 0104:2000 Methods for determination of nitrogen oxides in flue gas
JIS K 2609:1990 Crude petroleum and petroleum products -- Determination of nitrogen content
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 0400-44-40:2000 Water quality -- Determination of Kjeldahl nitrogen -- Method after mineralization with selenium
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
JIS R 1640:2002 Methods for the quantitative phase analysis of silicon nitride

Korean Agency for Technology and Standards (KATS), Total Nitrogen Determination Method

KS D 2555-1995 Methods for determination of nitrogen in tantalum
KS D 2555-2015 Methods for determination of nitrogen in tantalum
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 D 1811-1993 Methods for determination of nitrogen in iron and steel
KS D 2555-2020 Determination of nitrogen in tantalum
KS D 1811-2003(2018) Methods for determination of nitrogen in iron and steel
KS D 1811-2003 Methods for determination of nitrogen in iron and steel
KS D 0274-1993 Method of measuring nitrided case depth for iron and stee1
KS D 2530-2016 Methods for determination of nitrogen in titanium and titanium alloys
KS D 2573-1995 Methods for determination of nitrogen in zirconium and zirconium alloys
KS D 2573-2015 Methods for determination of nitrogen in zirconium and zirconium alloys
KS D 2573-2015(2020) Methods for determination of nitrogen in zirconium and zirconium alloys
KS D 2530-2021 Methods for determination of nitrogen in titanium and titanium alloys
KS E ISO 333-2003(2013) Coal－Determination of nitrogen－Semi-micro Kjeldahl method
KS H ISO 1871-2013(2018) Agricultural food products ― General directions for the determination of nitrogen by the Kjeldahl method
KS E ISO 333:2003 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 D 0275-1993 Method of measuring surface hardness for nitrided iron and stee1
KS I ISO 11261-2008(2018) Soil quality－Determination of total nitrogen－Modified Kjeldahl method
KS I ISO 11261-2008(2021) Soil quality－Determination of total nitrogen－Modified Kjeldahl method
KS I ISO 13878-2009(2019) Soil quality－Determination of total nitrogen content by dry combustion(“elemental analysis”)
KS I ISO 11261:2008 Soil quality-Determination of total nitrogen-Modified Kjeldahl method
KS M 2112-2011 Crude petroleum and petroleum products-Determination of nitrogen content
KS D 2573-2005 Methods for determination of nitrogen in zirconium and zirconium alloys
KS H ISO 5378-2008(2018) Starches and derived products－Determination of nitrogen content by the Kjeldahl method－Spectrophotometric method
KS M ISO 4176-2006(2011) Fertilizers－Determination of nitrate nitrogen content－Nitron gravimetric method
KS I ISO 11905-2-2008(2013) Water quality－Determination of nitrogen－Part 2：Determination of bound nitrogen, after combustion and oxidation to nitrogen dioxide, using chemiluminescence detection
KS M ISO 6851-2002(2017) Photography－Processing waste－Determination of total amino nitrogen－Microdiffusion Kjeldahl method
KS I ISO 11905-2:2008 Water quality-Determination of nitrogen-Part 2:Determination of bound nitrogen, after combustion and oxidation to nitrogen dioxide, using chemiluminescence detection
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 6851:2002 Photography-Processing waste-Determination of total amino nitrogen-Microdiffusion Kjeldahl method
KS D ISO 4945:2002 Steel－Determination of nitrogen content－Spectrophotometric method

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China, Total Nitrogen Determination Method

GB/T 19227-2008 Determination of nitrogen in coal
GB/T 2441.1-2001 Determination of urea-Determination of total nitrogen content
GB/T 608-1988 Chemical reagent--General method for the determination of nitrogen
GB/T 6625-1986 Test methods for nitrogen content of nitrogen-doped getter
GB/T 5687.4-1985 Methods for chemical analysis of ferro-chromium--The neutralization titration method for the determination of nitrogen content
GB/T 609-1988 Chemical reagent--General method for the determination of total nitrogen
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 12091-1989 Method for determination of nitrogen content in starches and derived products
GB/T 30728-2014 Determination of nitrogen in solid biofuels
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 24583.3-2009 Vanadium-Nitrogen alloy.Determination of nitrogen content.The distillation-neutralization titration method
GB/T 19227-2003 Determination of nitrogen in coal and coke semi-micro gasification method
GB/T 15076.13-1994 Methods for chemical analysis of tantalum and niobium-Determination of nitrogen content in tantalum
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 4324.26-1984 Methods for chemical analysis of tungsten--The Nessler reagent photometric method for the determination of nitrogen content
GB/T 4325.26-1984 Methods for chemical analysis of molybdenum--The nessler reagent photometric method for the determination of nitrogen content
GB/T 18856.12-2002 Test methods for quality of coal water mixture--Part 12: Determination of nitrogen of coal water mixture
GB/T 9506.5-1988 Test method for nitrogen-released and gas-absorbed dynamic curve of nitrogen-doped getter
GB/T 12143.2-1989 Determination method for amino nitrogen content in fruit and vegetable juice beverages--Formol number
GB/T 4324.6-1984 Methods for chemical analysis of tungsten--The ortho-phenanthroline photometric method for the determination of iron content
GB/T 4325.15-1984 Methods for chemical analysis of molybdenum--The chlorophosphonazo 1 photometric method for the determination of magnesium content
GB/T 4325.6-1984 Methods for chemical analysis of molybdenum--The ortho-phenanthroline photometric method for the determination of iron content
GB/T 4324.15-1984 Methods for chemical analysis of tungsten--The chlorophosphonazo I photometric method for the determination of magnesium content
GB/T 3597-2002 Fertilizer--Determination of nitrate nitrogen content--Nitron gravimetric method
GB/T 10505.3-1989 Determination of static absorbed ethene and nitrogen for molecular sieve 3A
GB 10505.3-1989 3A Molecular Sieve Static Ethylene and Nitrogen Adsorption Determination Method
GB 12143.2-12143.3-89 Determination method for amino nitrogen content in fruit and vegetable juice beverages-Formol number Determination method for L-ascorbic acid in fruit and vegetable juice beverages-Ethyl ether extract
GB 10267.5-1988 Analytical method for calcium metal Distillation-Nessler reagent photometric determination of nitrogen
GB/T 10267.5-1988 Method for analysis of calcium metal--The determination of nitrogen by distillation--Nessler reagent photometric method
GB/T 30733-2014 Determination of total carbon, hydrogen and nitrogen content in coal.Instrumental method
GB/T 41733-2022 Standard test method for determination of carbon residue of organic heat transfer fluids—Nitrogen charge 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 8220.2-1998 Methods for chemical analysis bismuth--Determination of iron content--1,10-Phenanthroline photometric method
GB/T 8158.4-1987 Methods for chemical analysis of sodium fluoride--The 1,10-phenanthroline spectro photometric method for the determination of iron content
GB/T 20931.9-2007 Methods for chemical analysis of lithium Determination of nitrogen content Mercuric potassium iodide spectrophotometric method
GB/T 20124-2006 Steel and iron - Determination of nitrogen content - Thermal conductimetric method after fusion in a current of inert gas (Routine method)
GB/T 8654.1-1988 Methods for chemical analysis of manganese metal--The ortho-phenanthroline photometric method for the determination of iron 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 6609.35-2023 Methods of chemical analysis and determination of physical properties of alumina Part 35: Determination of specific surface area Nitrogen adsorption method
GB/T 6609.35-2009 Chemical analysis methods and determination of physical performance of alumina-Part 35: Determination of specific surface area by nitrogen adsorption
GB/T 9823-1988 Method for determination of total nitrogen content in oilseed residues
GB/T 23952-2009 Inorganic chemicals for industrial use.General method for the determination of total nitrogen content.Distillation-acid-base titrations method
GB/T 6730.24-1986 Methods for chemical analysis of iron ores--The arsenazo 3 photometric method for the determination of rare earth elements content
GB 223.36-1985 Methods for chemical analysis of iron,steel and alloy--The volumetric method for the determination of nitrogen content after distillation separation
GB/T 20931.4-2007 Methods for chemical analysis of lithium Determination of iron content Orthopenanthroline spectrophotometric method
GB 223.37-1985 Methods for chemical analysis of iron, steel and alloys Distillation separation-volumetric determination of nitrogen content

CZ-CSN, Total Nitrogen Determination Method

CSN 65 0176 Cast.7-1979 Testing methods for tarch. Determination of nitrogen
CSN 56 0020-1987 General directions for the determination f nitrogen by the Kjeldahl method
CSN 42 0691 Cast.2-1985 Chemical analysis of non-ferrous metals and alloys. Titanium. Determination of nitrogen by the photometric method and titrimetric method
CSN 65 4836-1983 Minerál fertilizers Methode for determination of total nitrogen content
CSN 70 4243-1981 Glass apparatus by Parnas-Wagner for the determination of nitrogen
CSN 66 8102 Cast.28-1997
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 ON 65 4510-1962
CSN 65 4833-1982 Minerál Fertilizers Determination of Nitrie Nitrogen by Titrimetric Method
CSN 46 7092-24-1998 Testing methods for feeding stuffs - Part 24: Determination of the non-nitrogen extract substances
CSN 66 8102 Cast.17-1997
CSN 58 0703-7-1999 Testing methods of dehydrated products and seasonings - Part 7: Determinaton of total nitrogen
CSN 58 0703-8-1999 Testing methods of dehydrated products and seasonings - Part 8: Determination of ammoniacal nitrogen
CSN 72 0120 Z1-1997
CSN 72 0112 Cast.3 Z1-1997
CSN 46 7092-29-1998 Testing methods for feeding stuffs - Part 29: Determination of amonia content in the fish meals

RU-GOST R, Total Nitrogen Determination Method

GOST 13020.7-1985 Metallic chrome. Methods for determination of nitrogen
GOST 9853.1-1979 Sponge titanium. Method for the determination of nitrogen
GOST 33045-2014 Water. Methods for determination of nitrogen-containing matters
GOST 938.7-1968 Leather. Method of determination of nitrogen content
GOST 14338.4-1982 Molybdenum. Methods for determination of nitrogen, oxygen and hydrogen
GOST 14339.4-1982 Tungsten. Methods for the determination of nitrogen, oxygen, hydrogen
GOST 10671.4-2016 Reagents. Methods for determination of total nitrogen impurity
GOST 24596.3-2015 Feed phosphates. Method for determination of nitrogen
GOST 4192-1982 Drinking water. Methods for determination of mineral nitrogen-containing matters
GOST 27753.8-1988 Greenhouse grounds method for determination of ammonium nitrogen
GOST 20851.1-1975 Mineral fertilizers. Methods for determination of nitrogen content
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 27749.0-1988 Carbamid. Method of nitrogen content determination
GOST 34111-2017 Juice products. Determination of nitrogen content by Kjeldahl method
GOST 27753.7-1988 Greenhouse grounds methods for determination of nitrate nitrogen
GOST 8775.4-1987 Lithium. Method of determination of nitrogen
GOST R 55479-2013 Meat and meat products. Method for determination of amino-ammonia nitrogen
GOST 15933.11-1970 Ferroniobium. Method for the determination of nitrogen content
GOST 21600.6-1983 Ferrochrome. Method for the determination of nitrogen
GOST 16698.13-1993 Metallic manganese and nitrated manganese. Method for determination of nitrogen
GOST 16698.13-1984 Metallic manganese. Method for determination of nitrogen
GOST 10671.4-1974 Reagents. Methods for determination of nitrogen compaunds impurity general content
GOST 26715-1985 Organic fertilizers. Methods for determination of total nitrogen
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 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
GOST ISO 12359-1999 Cabon, alloyed and high-alloyed steels. Methods for determination of nitrogen
GOST 20851.2-1975 Mineral fertilizers. Methods for determination of phosphates
GOST 28743-1993 Solid mineral fuel. Methods for determination of nitrogen
GOST 24596.3-1981 Feed phosphates. Methods for determination of nitrogen
GOST 26716-1985 Organic fertilizers. Methods for determination of ammonium nitrogen
GOST 26239.7-1984 Semiconductor silicon. Method of oxygen, carbon and nitrogen determination
GOST 28743-1990 Coal. Determination of nitrogen. Semi-micro Kjeldahl method
GOST R 55246-2012 Milk and milk products. Determination of non-protein nitrogen content by Kjeldahl method
GOST 32979-2014 Solid mineral fuel. Instrumental method for determination of carbon, hydrogen and nitrogen
GOST 30181.7-1994 Mineral fertilizers. Method for determination of total mass fraction of nitrogen in compound fertilizers (in ammonium and amide forms, using hypochlorite method)
GOST 26107-1984 Soils. Methods for determination of total nitrogen
GOST R 55331-2012 Milk and milk products. Titrimetric method of calcium content determination
GOST 30181.8-1994 Mineral fertilizers. Method for determination of mass fraction of ammonium nitrogen in compound fertilizers (chloramine method)
GOST R ISO 17234-2-2015 Leather. Chemical tests for the determination of certain azo colorants in dyed leathers. Part 2. Method for determination of 4-aminoazobenzene
GOST R ISO 17234-1-2010 Leather. Methods of determination of certain azo colorants in dyed leathers. Part 1. Determination of certain aromatic amines derived from azo colorants

GOSTR, Total Nitrogen Determination Method

GOST 9853.1-1996 Sponge titanium. Method for determination of nitrogen
GOST R 58596-2019 Soils. Methods for determination of total nitrogen

KR-KS, Total Nitrogen Determination Method

KS D 1811-2003(2023) Methods for determination of nitrogen in iron and steel
KS D 0275-1993(2023) Method of measuring surface hardness for nitrided iron and steel
KS D ISO 4945-2022 Steel — Determination of nitrogen — Spectrophotometric method
KS D 0274-1993(2023) Method of measuring nitrided case depth for iron and steel

Professional Standard - Environmental Protection, Total Nitrogen Determination Method

HJ 717-2014 Soil quality.Determination of total nitrogen.Modified Kjeldahl method
HJ/T 64.3-2001 stationary source emission.Determination of cadmium.p-Azobenzenediazoaminazobenzene sulfonic acid spectrophotometric method
HJ 537-2009 Water quality.Determination of ammonia nitrogen.Distillation-neutralization titration

PH-BPS, Total Nitrogen Determination Method

PTS 86-1970 Method of Test for the Determination of Armoniacal Nitrogen
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

Group Standards of the People's Republic of China, Total Nitrogen Determination Method

T/CMA 031-2021 Calibration method for basic nitrogen meters
T/QAS 071-2021 Determination of total nitrogen in brine Kjeldahl method
T/NAIA 044-2021 Urine Total Nitrogen Determination in Livestock Kjeldahl Method
T/NAIA 001-2020 Determination of ammoniacal nitrogen in fermented feed Kjeldahl method
T/CNTAC 20-2018 Textile—Rapid determination method of the banned azo colorants
T/CMES 01011-2023 Determination method for content of nitrogen, sulfur and phosphorus in recycled sand for foundry
T/QAS 046-2021 Determination of total iron, ferrous iron and ferric iron in brine by phenanthroline spectrophotometric method
T/NAIA 0139-2022 Diesel engine nitrogen oxide reducing agent urea aqueous solution (AUS 32) Determination of urea content Automatic Kjeldahl method
T/NAIA 060-2021 Determination of true protein in feed Kjeldahl method
T/NAIA 0169-2022 Water Quality Determination of Ammonia Nitrogen by Ion Chromatography

Professional Standard - Military and Civilian Products, Total Nitrogen Determination Method

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

BE-NBN, Total Nitrogen Determination Method

NBN T 91-255-1976 Water analysis methods - Determination of the ammoniacal and organic nitrogen - (Kjeldahl nitrogen)
NBN T 04-301-1983 Urea for industrial use - Determination of nitrogen content - Titrimetric raethod after distillation
NBN T 04-304-1983 Urea for indus trial use - Determination of iron content-2,2'-Bipyridyl photometric method
NBN T 91-257-1977 Water analysis methods - Determination of the nitrite nitrogen - Photoraetric method
NBN T 94-301-1976 Determination of nitrogen dioxyde contents of ambient air -Griess-Saltzman method
NBN T 94-302-1976 Determination of nitrogen oxydes and of nitrogen monoxyde contents of ambient air - Griess-Saltzman method
NBN T 91-253-1976 Water analysis methods - Determination of the albuminoid nitrogen
NBN V 21-003-1987 Milk - Determination of nitrogen content - Kjeldahl method

American Society for Testing and Materials (ASTM), Total Nitrogen Determination Method

ASTM E147-61(2017) Standard Specification for Apparatus for Microdetermination of Nitrogen by Kjeldahl Method
ASTM D5475-93(1997) Standard Test Method for Nitrogen- and Phosphorus-Containing Pesticides in Water by Gas Chromatography with a Nitrogen-Phosphorus Detector
ASTM D3590-11 Standard Test Methods for Total Kjeldahl Nitrogen in Water
ASTM D3590-02 Standard Test Methods for Total Kjeldahl Nitrogen in Water
ASTM D3590-17 Standard Test Methods for Total Kjeldahl Nitrogen in Water
ASTM E258-67(2002) Standard Test Method for Total Nitrogen in Organic Materials by Modified Kjeldahl Method
ASTM D3228-22 Standard Test Method for Total Nitrogen in Lubricating Oils and Fuel Oils by Modified Kjeldahl Method
ASTM D5475-93(2002) Standard Test Method for Nitrogen- and Phosphorus-Containing Pesticides in Water by Gas Chromatography with a Nitrogen-Phosphorus Detector
ASTM C1494-01 Standard Test Methods for Determination of Mass Fraction of Carbon, Nitrogen, and Oxygen in Silicon Nitride Powder
ASTM C1494-13(2018) Standard Test Methods for Determination of Mass Fraction of Carbon, Nitrogen, and Oxygen in Silicon Nitride Powder
ASTM D8001-16e1 Standard Test Method for Determination of Total Nitrogen, Total Kjeldahl Nitrogen by Calculation, and Total Phosphorus in Water, Wastewater by Ion Chromatography
ASTM D8001-16 Standard Test Method for Determination of Total Nitrogen, Total Kjeldahl Nitrogen by Calculation, and Total Phosphorus in Water, Wastewater by Ion Chromatography
ASTM D1426-98 Standard Test Methods for Ammonia Nitrogen In Water
ASTM D6016-17(2023) Standard Test Method for Determination of Nitrogen, Water Extractable in Leather
ASTM D6016-17 Standard Test Method for Determination of Nitrogen, Water Extractable in Leather
ASTM D4954-89(2003) Standard Test Method for Determination of Nitrilotriacetates in Detergents
ASTM D1426-03 Standard Test Methods for Ammonia Nitrogen In Water
ASTM B923-10 Standard Test Method for Metal Powder Skeletal Density by Helium or Nitrogen Pycnometry
ASTM D6016-06(2012) Standard Test Method for Determination of Nitrogen, Water Extractable in Leather
ASTM E258-67(1996)e1 Standard Test Method for Total Nitrogen in Organic Materials by Modified Kjeldahl Method
ASTM C1069-86(2004)e1 Standard Test Method for Specific Surface Area of Alumina or Quartz by Nitrogen Adsorption
ASTM D6556-10 Standard Test Method for Carbon Black-Total and External Surface Area by Nitrogen Adsorption
ASTM D6556-04 Standard Test Method for Carbon Black-Total and External Surface Area by Nitrogen Adsorption

International Organization for Standardization (ISO), Total Nitrogen Determination Method

ISO 332:1981 Coal — Determination of nitrogen — Macro Kjeldahl method
ISO 332:1974 Title missing - Legacy paper document
ISO 333:1983 Coal; Determination of nitrogen; Semi-micro Kjeldahl method
ISO 8968-1:2001 Lait - Détermination de la teneur en azote - Partie 1: Méthode Kjeldahl (Deuxième édition)
ISO 8968-1:2001|IDF 20-1:2001 Determination of milk nitrogen content Part 1: Kjeldahl method
ISO 11261:1995 Soil quality - Determination of total nitrogen - Modified Kjeldahl method
ISO 8968-1:2001 | IDF 20-1: 2001 Milk — Determination of nitrogen content — Part 1: Kjeldahl 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 937:2023 Meat and meat products — Determination of nitrogen content — Reference method
ISO 333:1996 Coal - Determination of nitrogen - Semi-micro Kjeldahl 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 15351:1999 Steel and iron - Determination of nitrogen content - Thermal conductimetric method after fusion in a current of inert gas (Routine method)
ISO/TR 11905-2:1997 Water quality - Determination of nitrogen - Part 2: Determination of bound nitrogen, after combustion and oxidation to nitrogen dioxide, using chemiluminescence detection
ISO 4945:1977 Steel; Determination of nitrogen content; Spectrophotometric method
ISO 4945:2018 Steel - Determination of nitrogen - Spectrophotometric method

Anhui Provincial Standard of the People's Republic of China, Total Nitrogen Determination Method

DB34/T 2135-2014 Determination method of carbon, hydrogen and nitrogen in coal thermal conductivity method

PL-PKN, Total Nitrogen Determination Method

PN C04576 ArkusZ02-1973 Water and waste water Tests for nitrogen Determination of ammonium nitrogen by titrimetric method
PN C04576 ArkusZ12-1973 Water and waste water Tests for nitrogenDetermination of total nitrogen of Kjeldahl
PN Z04075-1961 Speedy Me?hod for De?er mina?ion of Ni?rogen Oxyde* in Air
PN C87030-16-1990 Horticultural (ertilizers Method for determination of nitrogen
PN A79528-17-1993 Spirit (ethyl alcohol). Methods of tests. Determination of voltile nitrogen basen content
PN C04576 ArkusZ01-1973 Water and waste water Tests for nitrogen Determination of ammonium nitrogen by colorimetric method with Nessler reagent
PN G04523-1992 Solid fuels. Determination of nitrogen by the Kjeldahl method
PN C04576-10-1986 Water and waste water Tests for nitrogen Determination of nitrate nitrogen by potentiometric method with ion selective electrode

German Institute for Standardization, Total Nitrogen Determination Method

DIN EN 15750:2010-02 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 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 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 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 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 EN 25663:1993-11 Water quality; determination of Kjeldahl nitrogen; method after mineralization with selenium (ISO 5663:1984); German version EN 25663:1993
DIN EN ISO 4945:2019-03 Steel - Determination of nitrogen - Spectrophotometric method (ISO 4945:2018); German version EN ISO 4945:2018
DIN CEN/TS 15559:2007 Fertilizers - Determination of nitric and ammoniacal nitrogen according to Arnd; German version CEN/TS 15559:2007
DIN EN 15476:2009 Fertilizers - Determination of nitric and ammoniacal nitrogen according to Devarda; English version of DIN EN 15476:2009-04
DIN EN 15558:2009-06 Fertilizers - Determination of nitric and ammoniacal nitrogen according to Ulsch; German version EN 15558:2009
DIN EN 25663:1993 Water quality; determination of Kjeldahl nitrogen; method after mineralization with selenium (ISO 5663:1984); German version EN 25663:1993
DIN 51732:2014-07 Testing of solid mineral fuels - Determination of total carbon, hydrogen and nitrogen - Instrumental methods
DIN EN ISO 5378:1994-10 Starches and derived products - Determination of nitrogen content by the Kjeldahl method - Spectrophotometric method (ISO 5378:1978); German version EN ISO 5378:1994
DIN EN 16339:2013-11 Ambient air - Method for the determination of the concentration of nitrogen dioxide by diffusive sampling; German version EN 16339:2013
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).

Association Francaise de Normalisation, Total Nitrogen Determination Method

NF V04-211:1971 MILK. DETERMINATION OF TOTAL NITROGEN CONTENT. (KJELDAHL METHOD).
NF ISO 11261:1995 Qualité du sol - Dosage de l'azote total - Méthode de Kjeldahl modifiée.
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 EN 12135:1997 Jus de fruits et de légumes - Dosage de l'azote - Méthode de Kjeldahl.
NF EN ISO 3188:1994 Amidons, fécules et produits dérivés - Dosage de l'azote selon la méthode de Kjeldahl - Méthode titrimétrique.
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 U42-142*NF EN 15476:2009 Fertilizers - Determination of nitric and ammoniacal nitrogen according to Devarda
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 A06-555*NF EN ISO 4945:2018 Steel - Determination of nitrogen - Spectrophotometric method
NF X31-111*NF ISO 11261:1995 Soil quality. Determination of total nitrogen. Modified kjeldahl method.
NF U42-100:1965 Products used in agriculture. Nitrogenous fertilizers. Quantity determination of various forms of nitrogen. General presentation.
NF T90-110*NF EN 25663:1994 Water quality - Determination of kjekldahl nitrogen - Method after mineralization with selenium.
NF ISO 1871:2009 Produits alimentaires et aliments des animaux - Lignes directrices générales pour le dosage de l'azote selon la méthode de Kjeldahl
NF A06-559*NF EN ISO 15351:2010 Steel and iron - Determination of nitrogen content - Thermal conductimetric method after fusion in a current of inert gas (Routine method)
NF X43-028*NF EN 16339:2013 Ambient air - Method for the determination of the concentration of nitrogen dioxide by diffusive sampling
NF U42-151:1984 Fertilizers. Determination of total nitrogen content. Titrimetric method after distillation.
NF X34-220:2011 Solid recovered fuels - Methods for the determination of carbon (C), hydrogen (H) and nitrogen (N) content.

VN-TCVN, Total Nitrogen Determination Method

TCVN 5255-2009 Soil quality.Method for the determination of bio-available nitrogen
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 6498-1999 Soil quality.Determination of total nitrogen.Modifierd Kejldahl 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 6624-2-2000 Water quality.Determination of nitrogen.Part 1: Determination of bound nitrogen, after combustion and oxidation to nitrogen dioxide, using chemiluminescence detection
TCVN 3705-1990 Aquatic products.Method for the determination of total nitrogen and protein content
TCVN 1545-1993 Animal mixed feeding stuffs.Method for determination of nitrogen-free extract
TCVN 3756-1983 Natural gas.Method for the determination of oxygen, nitrogen and methane by gas chromatography

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, Total Nitrogen Determination Method

GB/T 34003-2017 Detection method of impurity elements in boron nitride
GB/T 35109-2017 Static test method of nitrogen and oxygen separation for molecular sieves

Professional Standard - Forestry, Total Nitrogen Determination Method

LY/T 1228-1999 Determination of total nitrogen in forest soil

Professional Standard - Business, Total Nitrogen Determination Method

SB/T 10318-1999 Analysis of ammoniacal nitrogen

AENOR, Total Nitrogen Determination Method

UNE 31015:1957 DETERMINATION OF NITROGEN BY LUNGE METHOD.
UNE-EN 15750:2010 Fertilizers - Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods
UNE 77318:2001 Soil quality. Determination of total nitrogen. Modified Kjeldahl method.
UNE-EN 12135:1998 Fruit and vegetable juices - Determination of nitrogen content - Kjeldahl method
UNE 84047:1995 COSMETIC RAW MATERIALS. DETERMINATION OF NITROGEN. KJEDHAL'S METHOD (SEMI-MICRO).
UNE 31007:1972 DETERMINATION OF NITROGEN BY SCHULTZE-THIEMANN METHOD.
UNE 34080:1974 ANALYSIS METHODS FOR CHOCOLATES. DETERMINATION OF TOTAL NITROGEN. (PROTEINS).
UNE-EN ISO 3188:1995 STARCHES AND DERIVED PRODUCTS. DETERMINATION OF NITROGEN CONTENT BY THE KJELDAHL METHOD. TITRIMETRIC METHOD. (ISO 3188:1978).
UNE-EN 16339:2014 Ambient air - Method for the determination of the concentration of nitrogen dioxide by diffusive sampling
UNE-EN 25663:1994 WATER QUALITY. DETERMINATION OF KJELDAHL NITROGEN. METHOD AFTER MINERALIZATION WITH SELENIUM. (ISO 5663:1984).
UNE 32013:1995 COAL. DETERMINATION OF NITROGEN. SEMI-MICRO KJELDAHL METHOD.

Military Standard of the People's Republic of China-General Armament Department, Total Nitrogen Determination Method

GJB 337-1987 Determination method of nitrogen content of nitrocellulose (interferometer method)
GJB 770.303-1989 Test methods for gunpowder analysis: Determination of nitrogen content of nitrocellulose. Five-tube nitrogen meter method
GJB 337-1987(XG1-2015) Modification sheet 1-2015 for determination method of nitrogen content of nitrocellulose
GJB 8682.11-2015 Methods of chemical analysis of pyrotechnics Part 11: Determination of barium nitrate content and nitrogen determination method
GJB 533.5-1988 Detection method for 45 components of submarine cabin air. Determination of nitrogen oxide content. Calibration tube method

CU-NC, Total Nitrogen Determination Method

NC 26-124-1985 Drugs, Deterrnination of Nitrogen by Kjejdah!. Testing Method
NC 24-63-1986 Inorganic Chemical Products. Nitrogen. Purity Determination by Orsat Anaiyzer Method
NC 24-64-1986 Inorganic Chemical Products Nitrogen, Determination of Oil Content
NC 24-65-1986 Inorganic Chemical Products Nitrogen. Determination of Water Vapor Content. Aerial Water Point Method

Professional Standard - Aviation, Total Nitrogen Determination Method

HB 5023-1994 Measuring method for nitriding and nitrocarburizing layer depth of aerospace steel parts
HB 5297.25-2001 Methods of chemical analysis of titanium alloys - Determination of nitrogen content by steam distillation
HB 5493-1991 Determination method for carburizing and carbonitriding layer depth of aviation steel parts
HB 5219.19-1998 Determination of Cerium Content by Spectrophotometric Method of Tribromoarsine in Magnesium Alloy

AT-ON, Total Nitrogen Determination Method

ONORM M 6248-1988 Water quality; determlnation of Kjeldabl nitrogen; method ajter mineralization with selenium
ONORM L 1091-1999 Chemical analysis of soils - Determination of inorganic nitrogen Nmin-method

Professional Standard - Commodity Inspection, Total Nitrogen Determination Method

SN/T 4042-2014 Determination of azide in wines for export
SN/T 0736.5-1999 Chemical analysis of fertilizers for import and export.Determination of nitrogen content
SN/T 0541.5-2009 Inspecting method of import and export standard rubber.Determination of nitrogen content
SN/T 0736.11-2002 Chemical analysis of fertilizers for import and export.Determination of nitrogen content by auto analyzer
SN/T 0736.5-2010 Test method of import and export fertilizers.Part 5: Determination of nitrogen content

Professional Standard - Aerospace, Total Nitrogen Determination Method

QJ 2781A-2004 Determination of the carbon content,the hydrogen content and the nitrogen contene of carbonaceous material
QJ 1326-1987 Determination method of nitriding layer depth of iron and steel parts
QJ 2781-1995 Method for Determination of Carbon, Hydrogen and Nitrogen Content in Carbon Materials

Hebei Provincial Standard of the People's Republic of China, Total Nitrogen Determination Method

DB13/T 1224-2010 Determination method of total nitrogen in organic chemical products

Professional Standard-Ships, Total Nitrogen Determination Method

CB 3385-1991 Determination method of nitriding layer depth of iron and steel parts
CB/T 3385-1991 Determination method of nitriding layer depth of iron and steel parts
CB/T 3385-2013 Method of measuring nitrided case depth for iron and steel

Tianjin Provincial Standard of the People's Republic of China, Total Nitrogen Determination Method

DB12/T 512-2014 Determination method of nitrate nitrogen in soil samples

Danish Standards Foundation, Total Nitrogen Determination Method

DS/EN 15750:2010 Fertilizers - Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods
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 3188:1995 Starches and derived products - Determination of nitrogen content by the Kjeldahl method - Titrimetric method
DS 242:1988 Water quality. Kjeldahl-nitrogen. Kjeldahl-method
DS/EN ISO 5378:1995 Starches and derived products - Determination of nitrogen content by the Kjeldahl method - Spectrophometric method
DS/EN 16339:2013 Ambient air - Method for the determination of the concentration of nitrogen dioxide by diffusive sampling
DS/ISO 1871:2009 Food and feed products - General guidelines for the determination of nitrogen by the Kjeldahl method
DS/EN 25663:1994 Water quality-Determination of Kjeldahl nitrogen-Method after mineralization with selenium
DS/EN ISO 4945:2009 Steel - Determination of nitrogen content - Spectrophotometric method
DS/ISO 21663:2020 Solid recovered fuels – Methods for the determination of carbon (C), hydrogen (H), nitrogen (N) and sulphur (S) by the instrumental method

Lithuanian Standards Office , Total Nitrogen Determination Method

LST EN 15750-2010 Fertilizers - Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods
LST EN 12135-2001 Fruit and vegetable juices - Determination of nitrogen content - Kjeldahl method
LST EN ISO 3188:2000 Starches and derived products - Determination of nitrogen content by the Kjeldahl method - Titrimetric method (ISO 3188:1978)
LST EN ISO 8968-1:2002 Milk - Determination of nitrogen content - Part 1: Kjeldahl method (ISO 8968-1:2001)
LST EN ISO 5378:2000 Starches and derived products - Determination of nitrogen content by the Kjeldahl method - Spectrophotometric method (ISO 5378:1978)

SE-SIS, Total Nitrogen Determination Method

SIS SS 18 71 63-1984 Coal - Determination of nitrogen - Macro Kjeldahl method
SIS SS 18 71 60-1983 General method for the determination of arsenic - Silver diethyldithiocarbamate photometric method

ZA-SANS, Total Nitrogen Determination Method

SANS 333:1996 Coal - Determination of nitrogen - Semi-micro Kjeldahl method

Association of Official Analytical Chemists (AOAC), Total Nitrogen Determination Method

AOAC 991.20 AOAC Official Method 991.20 Nitrogen (Total) in Milk Kjeldahl Methods

Ningxia Provincial Standard of the People's Republic of China, Total Nitrogen Determination Method

DB64/T 1734-2020 Soil Hydrolyzable Nitrogen Determination Kjeldahl Method

RO-ASRO, Total Nitrogen Determination Method

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
STAS SR 13348-1-1996 Tea. Analysis methods. Determination of proteic nitrogen by the Kjeldahl method. Spectrophotometric method
SR ISO 4176:1981 Fertilizers. Determination of nitrate nitrogen content. Nitrogen gravimetric method

European Committee for Standardization (CEN), Total Nitrogen Determination Method

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 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 16339:2013 Ambient air - Method for the determination of the concentration of nitrogen dioxide by diffusive sampling
EN ISO 4945:2009 Steel - Determination of nitrogen content - Spectrophotometric method (ISO 4945:1977)

TR-TSE, Total Nitrogen Determination Method

TS 2428-1976 METHODS FOR THE CHEMICAL ANALYSIS OF IRON AND STEELS DETERMINATION OF NITROGEN CONTENT
TS 362-1966 DETERMINAT?ON OF NITROGEN ?N COAL BY THE SEMI ■ M?KRO KJELDAHL METHOD
TS 3651-1981 METHODS FOR THE ANALYSIS OF WATER — DETERMINATION OF IRON CONTENT — 1,10 Phenanthroline Spectrophotometry Method

未注明发布机构, Total Nitrogen Determination Method

DIN EN 14211:2005 Air quality — measurement method for determining the concentration of nitrogen dioxide and nitrogen monoxide using chemiluminescence
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
BS 4267-2:1988(1999) Ammonium nitrate — Part 2 : Method for determination of total nitrogen content
BS 4267-1:1988(1999) Ammonium nitrate — Part 1 : Method for determination of ammoniacal nitrogen content
DIN EN ISO 8968-1:2002 Milk — Determination of nitrogen content — Part 1: Kjeldahl method (ISO 8968-1:2001)

Association of German Mechanical Engineers, Total Nitrogen Determination Method

VDI 2456-2004 Stationary source emissions - Reference method for determination of the sum of nitrogen monoxide and nitrogen dioxide - Ion chromatography method

Professional Standard - Urban Construction, Total Nitrogen Determination Method

CJ/T 103-1999 Municipal domestic refuse.Determination of total nitrogen.Semi-micro Kjeldahl method
CJ 26.25-1991 Determination of Standard Ammonia Nitrogen in Municipal Sewage Water Quality Inspection Method
CJ 26.27-1991 Municipal sewage water quality inspection method standard Determination of total nitrogen Titration method after distillation

Standard Association of Australia （SAA）, Total Nitrogen Determination Method

AS 1050.12:1983/Amdt 1:1984
AS 2300.1.2.2:2008 Methods of chemical and physical testing for the dairying industry Method 1.2.2: General methods and principles- Determination of nitrogen—Nitrogen fractions from milk
AS 1050.12:1983 Methods for the analysis of iron and steel - Determination of nitrogen in steel (steam distillation titrimetric method)
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 3580.5.1:2023 Methods for sampling and analysis of ambient air, Method 5.1: Determination of oxides of nitrogen — Direct-reading instrumental method
AS 2512.7.1:2006 Methods of testing protective helmets Method 7.1: Determination of stability of protective helmets—Static stability

Professional Standard - Ferrous Metallurgy, Total Nitrogen Determination Method

YB/T 4530-2016 Nitrogen-bearing ferromanganese.Determination of nitrogen content.The distillation-neutralization titration method
YB/T 174.1-2000 Chemical analysis for silicon nitride bonded silicon carbide product.Determination of silicon nitride content.High pressure dissolve specimen method
YB/T 174.4-2000 Chemical analysis for silicon nitride bonded silicon carbide product.Determination of iron oxide content.o-Phenanthroline photometric method

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

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 40535.1-2021 Test methods of continuous nitride ceramic fibers—Part 1：Nitrogen content
GB/T 6432-2018 Determination of crude protein in feeds—Kjeldahl method

International Dairy Federation (IDF), Total Nitrogen Determination Method

IDF 20-1-2001 Milk - Determination of nitrogen content - Part 1: Kjeldahl method

Canadian Standards Association (CSA), Total Nitrogen Determination Method

CSA Z223.24 -M1983-1983 Method for the Measurement of Nitric Oxide and Nitrogen Dioxide in Air General Instruction No 1 R(1999)

PT-IPQ, Total Nitrogen Determination Method

NP EN 12135-2000 Fruit and vegetable juices Determination of nitrogen content Kjeldahl method
NP 1623-1979
NP 1841-1985

Taiwan Provincial Standard of the People's Republic of China, Total Nitrogen Determination Method

CNS 8449-2001 Method of Test for Fertilizers: Determination of Nitrogen Content
CNS 14288-2006 Method of measuring nitrided case depth for iron and steel
CNS 14747-2003 Method of test for fertilizers(Determination of guanidine nitrogen content)
CNS 14288-1998 Method of measuring nitrided case depth for iron and steel
CNS 12590-1989 Method of Test for Organic Nitrogen in Paper and Paperboard

海关总署, Total Nitrogen Determination Method

SN/T 4675.32-2021 Method for determination of nitrogen stable isotope ratios in exported wines

HU-MSZT, Total Nitrogen Determination Method

Xinjiang Provincial Standard of the People's Republic of China, Total Nitrogen Determination Method

DB65/T 602.3-2001 The determinanation of ammonium nitrogen in soil
DB65/T 602.4-2001 The determinanation of nitrate nitrogen in soil
DB65/T 602.2-2001 The determinanation of hydrolyzable nitrogen in soil

Professional Standard - Chemical Industry, Total Nitrogen Determination Method

HG/T 4103-2009 Chemical reagent.General method for the determination of organic nitrogen compounds
HG/T 3519-2003 Industrial circulating cooling water-Determination of Benzotriazole
HG 5-1519-1985 Determination method of benzotriazole in industrial circulating cooling water

Inner Mongolia Provincial Standard of the People's Republic of China, Total Nitrogen Determination Method

DB15/T 1458-2018 Method for Determination of pH Value, Organic Acid and Ammonia Nitrogen in Silage

YU-JUS, Total Nitrogen Determination Method

JUS C.A1.409-1982 Methods for chemical analysi$ of ferroalloys. Titrimetric determination ofnitrogen in ferro-chromium
JUS B.H8.320-1988 Methods of analysis of coal and coke. Determination of nitrogen ccmtent - Makro Kjeldahl nethod
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

Professional Standard - Coal, Total Nitrogen Determination Method

MT 279-1994 Harmful gas existing in mine air Detection method of nitrogen oxide（detector tube method）
MT/T 279-1994

Professional Standard - Machinery, Total Nitrogen Determination Method

JB/T 6571-1993 Method for measuring impact ductility of man-made diamond and borazon

ES-UNE, Total Nitrogen Determination Method

UNE-EN ISO 4945:2019 Steel - Determination of nitrogen - Spectrophotometric method (ISO 4945:2018)

AR-IRAM, Total Nitrogen Determination Method

(U.S.) Ford Automotive Standards, Total Nitrogen Determination Method

FORD FLTM EU-BA 054-01-2000 METAL FOIL METHOD FOR DETERMINATION OF C- AND N-POTENTIAL OF CARBURIZING AND CARBONITRIDING FURNACE ATMOSPHERES

Professional Standard - Geology, Total Nitrogen Determination Method

DZ/T 0064.23-1993 Groundwater quality testing method Determination of iron by phenanthrene spectrophotometry

Professional Standard - Petrochemical Industry, Total Nitrogen Determination Method

SH/T 0162-1992 Method for Determination of Basic Nitrogen in Petroleum Products

ES-AENOR, Total Nitrogen Determination Method

UNE 55-709-1984

Professional Standard - Electron, Total Nitrogen Determination Method

SJ 2806-1987 Method for determination of trace Oxygen and Argon in electronic grade Hydrogen--Concentration gas chromatographic method
SJ 2804.1-1987 Method for determination of Nitrogen in electronic grade Argon--Concentration gas chromatographic method (Part one)
SJ 2804.2-1987 Method for determination of trace Nitrogen in electronic grade Argon--Concentration gas chromatographic method (Part two)
SJ 3238-1989 Method for determination of trace Nitrogen in electronic grade Argon--Argon ionization gas chromatography method
SJ 2805-1987 Method for determination of Oxygen with Argon and Nitrogen in electronic grade Hydrogen--Concentration gas chromatographic method

Professional Standard - Non-ferrous Metal, Total Nitrogen Determination Method

YS/T 74.7-1994 Cadmium Chemical Analysis Method 1,10-Phenanthroline Spectrophotometric Determination of Iron Content
YS/T 536.2-2006 Bismuth Chemical Analysis Method 1,10-Phenanthroline Spectrophotometric Determination of Iron Content
YS/T 535.4-2006 Sodium fluoride chemical analysis method o-phenanthrene spectrophotometric determination of iron content

Military Standard of the People's Republic of China-Commission of Science,Technology and Industry for National Defence, Total Nitrogen Determination Method

GJB 5381.11-2005 Methods of chemical analysis for pyrotech. Part 11: Determination of barium nitrate content. Azotometry method

Chongqing Provincial Standard of the People's Republic of China, Total Nitrogen Determination Method

DB50/T 833-2017 Determination of nitrogen oxides in ambient air (nitrogen monoxide and nitrogen dioxide) by chemiluminescence

Professional Standard - Light Industry, Total Nitrogen Determination Method

QB/T 3812.17-1999 Leather.Determination of nitrogen content and “hide substance”.Titrimtric method

CEN - European Committee for Standardization, Total Nitrogen Determination Method

EN ISO 4945:2018 Steel - Determination of nitrogen - Spectrophotometric method

国家质量监督检验检疫总局, Total Nitrogen Determination Method

SN/T 4677-2016 Determination method of azocarboxamide in exported food by high performance liquid chromatography