The principle of the determination method of total nitrogen

The principle of the determination method of total nitrogen, Total:500 items.

In the international standard classification, The principle of the determination method of total nitrogen involves: External water conveyance systems, Water quality, Coals, Fertilizers, Analytical chemistry, Milk and milk products, Soil quality. Pedology, Animal feeding stuffs, Ferrous metals, General methods of tests and analysis for food products, Organic chemicals, Lubricants, industrial oils and related products, Air quality, Fuels, Rubber, Petroleum products in general, Wastes, Non-ferrous metals, Spices and condiments. Food additives, Products of the chemical industry, Ferroalloys, Construction materials, Inorganic chemicals, Photography, Farming and forestry, Test conditions and procedures in general, Crude petroleum, Refractories, Metalliferous minerals, Fruits. Vegetables, Beverages, Textile fibres, Raw materials for rubber and plastics, Iron and steel products, Powder metallurgy, Tea. Coffee. Cocoa, Protection against fire, Edible oils and fats. Oilseeds, Plastics, Radiation measurements, Cereals, pulses and derived products, Meat, meat products and other animal produce, Sugar. Sugar products. Starch, Leather technology, Cellular materials, Tobacco, tobacco products and related equipment, Vocabularies, Non-metalliferous minerals, Paints and varnishes, Non-destructive testing, Electronic tubes.

GOSTR, The principle of the determination method of total nitrogen

GOST R 58596-2019 Soils. Methods for determination of total nitrogen
GOST 9853.1-1996 Sponge titanium. Method for determination of nitrogen
GOST 4151-1972 Drinking water. Method for determination of total hardness
GOST 27588-2020 Coke. Determination of total moisture
GOST 33815-2016 Wine products and raw materials for it’s production. Method for determination of mass concentration of total and the reduced extract

Indonesia Standards, The principle of the determination method of total nitrogen

SNI 4146-2013 Method for determination of total nitrogen content in sediment by Kjeldahl titration method
SNI 13-4699-1998 Determination of total manganese (Mn-total) in manganese ores sample
SNI 2372.2-2011 Cara uji fisika - Bagian 2: Penentuan bobot tuntas pada produk perikanan

Jilin Provincial Standard of the People's Republic of China, The principle of the determination method of total nitrogen

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

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China, The principle of the determination method of total nitrogen

GB/T 2441.1-2001 Determination of urea-Determination of total nitrogen content
GB/T 2441.1-2008 Determination of urea.Part 1:Total nitrogen content
GB/T 609-2006 Chemical reagent General method for the determination of total nitrogen
GB/T 609-2018 Chemical reagent.General method for the determination of total nitrogen
GB/T 19227-2008 Determination of nitrogen in coal
GB/T 21318-2009 Determination of total nirogen content in animal feeding stuffs by combustion according to the Dumas principle and calculation o the crude protein content
GB/T 24318-2009 Determination of total nitrogen content in animal feeding stuffs by combustion according to the Dumas principle and calculation of the crude protein content
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 10209.1-2008 Determination of monoammonium phosphate and diammonium phosphate.Part 1:Total nitrogen content
GB/T 17767.1-2008 Determination of organic-inorganic compound fertilizers.Part 1:Total nitrogen content
GB/T 41965-2022 Photography—Processing waste—Determination of total amino nitrogen(microdiffusion Kjeldahl method)
GB/T 8572-2001 Determination of total nitrogen content for compound fertilizers-Titrimetric method after distillation
GB/T 10511-2008 Determination of tatal nitrogen content for nitrophosphate.Titrimetric method after distillation
GB/T 8572-2010 Determination of total nitrogen content for compound fertilizers titrimetric method after distillation
GB/T 17674-2012 Determination of nitrogen in crude oil by boat-inlet chemiluminescence
GB/T 10722-2003 Carbon black-Determination of total and external surface area by nitrogen adsorption
GB/T 10722-2014 Carbon black.Determination of total and external surface area.Nitrogen adsorption test method
GB/T 22105.1-2008 Soil quality.Analysis of total mercury,arsenic and lead contents.Atomic fluorescence spectrometry.Part 1:Analysis of total mercury contents in soils
GB/T 22105.2-2008 Soil quality.Analysis of total mercury,arsenic and lead contents.atomic fluorescence spectrometry.Part 2:Analysis of total arsenic contents in soils
GB/T 22105.3-2008 Soil quality.Analysis of total mercury,arsenic and lead contents.Atomic fluorescence spectrometry.Part3:Analysis of total lead contents in soils
GB 5543-1985 Resin finishing agent－Determination of total formaldehyde content
GB/T 17674-1999 Determination of nitrogen in petroleum and petroleum products by chemiluminescence method
GB 9170-1988 Determination method of total nitrogen content in lubricating oil and fuel oil (improved Kjeldahl method)
GB/T 23772-2009 Inorganic chemicals for industrial use.General method for the determination of total nitrogen content.Nessler's reagent colorimetric method
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 30728-2014 Determination of nitrogen in solid biofuels
GB/T 23869-2009 Method for determination of the total mercury in pollen
GB/T 5158.4-2001 Metallic powders--Determination of total oxygen content by reduction-extraction
GB/T 25948-2010 Aluminium ores.Determination of total iron content.Titanium trichloride reduction method
GB/T 3257.15-1999 Methods for chemical analysis of bauxite--Determination the total content of rare earth oxide--Tribromo-arsenazo photometric 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 19227-2003 Determination of nitrogen in coal and coke semi-micro gasification method
GB 7468-1987 Determination of Total Mercury in Water Quality by Cold Atomic Absorption Spectrophotometry

RU-GOST R, The principle of the determination method of total nitrogen

GOST 10671.4-2016 Reagents. Methods for determination of total nitrogen impurity
GOST 26107-1984 Soils. Methods for determination of total nitrogen
GOST 30181.9-1994 Mineral fertilizers. Method for determination of total mass fraction of nitrogen in compound fertilizers (distillation method using the chromium reduction of nitrate nitrogen and mineralization of organic 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 51423-1999 Feedstuffs, compound feeds, feed raw materials. Method for determination of soluble nitrogen fraction of total mass after treatment with pepsin in dilute hydrochloric acid
GOST 32985-2014 Solid biofuels. Determination of carbon, hydrogen and nitrogen by instrumental methods
GOST R 54216-2010 Solid biofuels. Determination of total content of carbon, hydrogen and nitrogen by instrumental methods
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 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 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 2642.15-1997 Refractories and refractory raw materials. Method for determination of general carbon
GOST 2642.15-2021 Refractories and refractory raw materials. Methods for determination of general carbon
GOST 29302-1992 Ammonium nitrate for industrial use. Method for determination of total nitrogen content (titrimetric) after distillation
GOST 24596.3-2015 Feed phosphates. Method for determination of nitrogen
GOST 32000-2012 The alcohol production and raw material for it producing. Method of total extract determination
GOST 31950-2012 Water. Method for determination of total mercury by flameless atomic absorption spectrometry
GOST R ISO 16634-1-2011 Food products. Determination of the total nitrogen content by combustion according to the Dumas principle and calculation of the crude protein content. Part 1. Oilseeds and animal feeding stuffs
GOST R 51620-2000 The alcohol production and raw material for it producing. Method of total extract determination
GOST R 50466-1993 Fodder, mixed fodder and animal feed raw stuff. Methods of nitrogen and crude protein determination
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 27417-1998 Metallic powders. Determination of total oxygen by reduction - extraction
GOST 27417-1987 Metal powders. Methods for determination of oxygen
GOST R ISO 7514-2012 Method for determination of total ash
GOST 23327-1998 Milk and milk products. Determination of mass part of total nitrogen by Kjeldahl method and determination of mass part of protein
GOST 23327-1978 Milk. Methods for determination of the total protein 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 R 51212-1998 Drinking water. Methods for determination of total mercury by flameless atomic absorption spectrometry
GOST 27753.7-1988 Greenhouse grounds methods for determination of nitrate nitrogen
GOST ISO 1575-2013 Tea. Method for determination of total ash
GOST R 51730-2001 Drinking water. Method for determination of summary specific radio-nuclei alpha-activity
GOST 31864-2012 Drinking water. Method for determination of summary specific radio-nuclei alpha-activity
GOST 32115-2013 The alcohol production and raw material for it producing. Method for determination of free and total sulphurous acid
GOST R 55479-2013 Meat and meat products. Method for determination of amino-ammonia nitrogen
GOST 851.11-1993 Primary magnesium. Method for determination of tin
GOST 851.12-1993 Primary magnesium. Method for determination of lead
GOST 851.13-1993 Primary magnesium. Method for determination of zinc
GOST R 55800-2013 Starch. Method of determination total ash
GOST R 51422-1999 Feedstuffs, compound feeds, feed raw materials. Method for determination of urea fraction of total mass
GOST 10671.4-1974 Reagents. Methods for determination of nitrogen compaunds impurity general content
GOST 33342-2015 Crude oil. Methods for determination of organic chloride
GOST 27588-1991 Hard coal coke. Method for determination of total moisture content
GOST 13217.7-1990 Ferrovanadium. Methods for determination of total aluminium
GOST R 54285-2010 Gasoline and methanol fuels. Determionation of total oxygen content by methods of reductive pyrolysis
GOST R 54285-2010(2019) Gasoline and methanol fuels. Determionation of total oxygen content by methods of reductive pyrolysis
GOST R 50279.10-1992 Paints and varnishes. Test methods of metal content. Determination of total lead. Flame atomic absorption spectrometric method
GOST 19438.0-1980 Low powered electronic tubes. Method of measurements of parameters. General principles
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 R 51425-1999 Feedstuffs, compound feeds, feed raw materials. Method for determination of zearalenone fraction of total mass

Group Standards of the People's Republic of China, The principle of the determination method of total nitrogen

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/GXAS 477-2023 Determination of total nitrogen content in sugarcane juice —sulphuric acid titrimetric method
T/CHES 15-2017 Determination of Total Nitrogen in Water Quality Gas Phase Molecular Absorption Spectrometry
T/GRM 049-2022 Determination of Mercury in Crude Oil
T/SDFA 002.1-2020 Fermented Feed Raw Materials Part 1 Determination of Total Acids - Acid-Base Titration

Standard Association of Australia （SAA）, The principle of the determination method of total nitrogen

AS 2300.1.2.2:1988 Methods of chemical and physical testing for the dairying industry - General methods and principles - Determination of nitrogen - Nitrogen fractions from milk
AS 2300.1.2.2:2008 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 2300.1.2.1:1991 Methods of chemical and physical testing for the dairying industry - General methods and principles - Determination of nitrogen - Reference Kjeldahl method
AS 2300.1.1:2008 General Methods and Principles of Chemical and Physical Testing Methods for the Dairy Industry Determination of Total Solids and Moisture
AS 2300.1.1:1988 Methods of chemical and physical testing for the dairying industry - General methods and principles - Determination of total solids and moisture
AS ISO 8968.1:2021 Milk and milk products — Determination of nitrogen content, Part 1: Kjeldahl principle and crude protein calculation
AS 1050.12:1983/Amdt 1:1984 Steel analysis methods Determination of nitrogen in steel (steam distillation titration method)
AS 2300.1.5:1988 Methods of chemical and physical testing for the dairying industry - General methods and principles - Determination of ash
AS 2300.1.6:1989 Methods of chemical and physical testing for the dairying industry - General methods and principles - Determination of pH
AS 2300.1.3:1988 Methods of chemical and physical testing for the dairying industry - General methods and principles - Determination of fat - Gravimetric method
AS 2300.1.10:2008 Methods of chemical and physical testing for the dairying industry Method 1.10: General methods and principles— Determination of phosphatase activity
AS 2300.1.3:2008 Chemical and physical test methods for the dairy industry General methods and principles Gravimetric determination of fat
AS 1050.12:1983 Methods for the analysis of iron and steel - Determination of nitrogen in steel (steam distillation titrimetric method)

Association Francaise de Normalisation, The principle of the determination method of total nitrogen

NF V04-211:1971 MILK. DETERMINATION OF TOTAL NITROGEN CONTENT. (KJELDAHL METHOD).
NF A06-555:2010 Steel - Determination of nitrogen content - Spectrophotometric method.
NF X31-111*NF ISO 11261:1995 Soil quality. Determination of total nitrogen. Modified kjeldahl method.
NF U42-151:1984 Fertilizers. Determination of total nitrogen content. Titrimetric method after distillation.
NF EN ISO 14891:2003 Lait et produits laitiers - Détermination de la teneur en azote - Méthode pratique par combustion selon le principe de Dumas
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 V04-221-1*NF EN ISO 8968-1:2014 Milk and milk products - Determination of nitrogen content - Part 1 : Kjeldahl principle and crude protein calculation
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 EN 16168:2012 Boues, biodéchets traités et sols - Détermination de la teneur totale en azote par combustion sèche
NF T73-282*NF EN 13716:2002 Surface active agents - Determination of total base nitrogen - Potentiometric titration.
NF EN 13716:2002 Agents de surface - Détermination de la teneur en azote total basique - Titrage potentiométrique
NF X31-036*NF EN 16168:2012 Sludge, treated biowaste and soil - Determination of total nitrogen using dry combustion method.
NF V04-396*NF EN ISO 14891:2003 Milk and milk products - Determination of nitrogen content - Routine method using combustion according to the Dumas principle.
NF X34-117:2011 Solid biofuels - Determination of total content of carbon, hydrogen and nitrogen - Instrumental methods.
FD S99-513*FD ISO/TR 21582:2021 Pyrogenicity - Principles and methods for pyrogen testing of medical devices
NF X31-505:1992 Soil quality - Physical methods - Method for determining the bulk volume and the water content of lumps of earth
NF ISO 9507:1990 Minerais de fer - Dosage du fer total - Méthode par réduction au chlorure de titane (III).
NF M07-058:1992 Produits pétroliers - Dosage de l'azote total dans les distillats pétroliers - Méthode par combustion et détection par chimioluminescence.
NF V03-767-1*NF EN ISO 16634-1:2008 Food products - Determination of the total nitrogen content by combustion according to the Dumas principle and calculation of the crude protein content - Part 1 : oilseeds and animal feeding stuffs.
NF A95-181-4:1993 Metallic powders. Determination of oxygen content by reduction methods. Part 4: total oxygen by reduction-extraction

British Standards Institution (BSI), The principle of the determination method of total nitrogen

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 6851:2001 Photography. Processing waste. Determination of total amino nitrogen (microdiffusion Kjeldahl method)
BS ISO 20620:2021 Fertilizers and soil conditioners. Determination of total nitrogen by combustion
BS 4267-2:1988(1999) Ammonium nitrate — Part 2 : Method for determination of total 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 15104:2006 Solid biofuels - Determination of total content of carbon, hydrogen and nitrogen - Instrumental methods
BS DD CEN/TS 15104:2005 Solid biofuels — Determination of total content of carbon, hydrogen and nitrogen — Instrumental methods
BS EN 13716:2002 Surface active agents - Determination of total base nitrogen - Potentiometric titration
BS EN ISO 14891:2002 Milk and milk products - Determination of nitrogen content - Routine method using combustion according to the Dumas principle
BS 7020-4.2:1990 Analysis of iron ores. Method for the determination of total iron content. Titanium (III) chloride reduction methods
BS ISO 2597-2:2019 Iron ores. Determination of total iron content. Titrimetric methods after titanium(III) chloride reduction
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 ISO 2597-2:2015 Iron ores. Determination of total iron content. Titrimetric methods after titanium(III) chloride reduction
BS ISO 2597-2:2008 Iron ores - Determination of total iron content - Titrimetric methods after titanium(III) chloride reduction
BS EN 15104:2011 Solid biofuels. Determination of total content of carbon, hydrogen and nitrogen. Instrumental methods
BS EN ISO 8968-1:2014 Milk and milk products. Determination of nitrogen content. Kjeldahl principle and crude protein calculation
BS EN ISO 16634-1:2008 Food products - Determination of the total nitrogen content by combustion according to the Dumas principle and calculation of the crude protein content - Part 1: Oilseeds and animal feeding stuffs
BS ISO 6853:2001 Photography. Processing waste. Determination of ammoniacal nitrogen (microdiffusion 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 16168:2012 Sludge, treated biowaste and soil. Determination of total nitrogen using dry combustion method
BS 5551-3.4:1987 Fertilizers. Physical properties. Method for determination of oil retention of high nitrogen content, straight ammonium nitrate fertilizers
BS DD CEN ISO/TS 16634-2:2010 Food products - Determination of the total nitrogen content by combustion according to the Dumas principle and calculation of the crude protein content - Cereals, pulses and milled cereal products
DD ISO/TS 12902:2002 Solid mineral fuels. Determination of total carbon, hydrogen and nitrogen. Instrumental methods
BS ISO 6851:2002 Photography - Processing waste - Determination of total amino nitrogen (microdiffusion Kjeldahl method)
DD ENV 14226:2002 Advanced technical ceramics. Test methods for ceramic powders. Determination of calcium, magnesium, iron and aluminium in silicon nitride by using flame atomic absorption spectroscopy (FAAS) or inductively coupled plasma atomic emission spectroscopy (I...
BS 4267-1:1988(1999) Ammonium nitrate — Part 1 : Method for determination of ammoniacal nitrogen content
BS ISO 937:2023 Meat and meat products. Determination of nitrogen content. Reference method
BS 1715-2.2:1989 Analysis of soaps. Quantitative test methods. Method for determination of total free alkali content

Hebei Provincial Standard of the People's Republic of China, The principle of the determination method of total nitrogen

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

VN-TCVN, The principle of the determination method of total nitrogen

TCVN 6498-1999 Soil quality.Determination of total nitrogen.Modifierd Kejldahl method
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 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 6638-2000 Water quality.Determination of nitrogen.Catalytic digestion after reduction with devarda's alloy
TCVN 3707-1990 Aquatic products.Method for the determination of amine ammonia nitrogen content
TCVN 4053-1985 Soil.Method for the determination of total potassium
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 4050-1985 Soil.Method for the determination of total organic matter
TCVN 1545-1993 Animal mixed feeding stuffs.Method for determination of nitrogen-free extract

American Society for Testing and Materials (ASTM), The principle of the determination method of total nitrogen

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 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 D1013-93(1998) Standard Test Method for Determining Total Nitrogen in Resins and Plastics
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 D6556-00a Standard Test Method for Carbon Black8212;Total and External Surface Area by Nitrogen Adsorption
ASTM D6556-01a Standard Test Method for Carbon Black8212;Total and External Surface Area by Nitrogen Adsorption
ASTM D6556-01 Standard Test Method for Carbon Black8212;Total and External Surface Area by Nitrogen Adsorption
ASTM E258-67(1996)e1 Standard Test Method for Total Nitrogen in Organic Materials by Modified Kjeldahl Method
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
ASTM D8083-16 Standard Test Method for Total Nitrogen, and Total Kjeldahl Nitrogen (TKN) by Calculation, in Water by High Temperature Catalytic Combustion and Chemiluminescence Detection
ASTM D6556-07 Standard Test Method for Carbon Black-Total and External Surface Area by Nitrogen Adsorption
ASTM D6556-17 Standard Test Method for Carbon Black&x2014;Total and External Surface Area by Nitrogen Adsorption
ASTM D3228-20 Standard Test Method for Total Nitrogen in Lubricating Oils and Fuel Oils by Modified Kjeldahl Method
ASTM D6556-02 Standard Test Method for Carbon Black8212;Total and External Surface Area by Nitrogen Adsorption
ASTM D6556-02a Standard Test Method for Carbon Black8212;Total and External Surface Area by Nitrogen Adsorption
ASTM D3228-19 Standard Test Method for Total Nitrogen in Lubricating Oils and Fuel Oils by Modified Kjeldahl Method
ASTM D3228-08(2019) Standard Test Method for Total Nitrogen in Lubricating Oils and Fuel Oils by Modified Kjeldahl Method
ASTM E258-07 Standard Test Method for Total Nitrogen in Organic Materials by Modified Kjeldahl Method
ASTM E147-61(2017) Standard Specification for Apparatus for Microdetermination of Nitrogen by Kjeldahl Method
ASTM D6556-03 Standard Test Method for Carbon Black8212;Total and External Surface Area by Nitrogen Adsorption
ASTM D3228-96 Standard Test Method for Total Nitrogen In Lubricating Oils and Fuel Oils By Modified Kjeldahl Method
ASTM D3228-01 Standard Test Method for Total Nitrogen In Lubricating Oils and Fuel Oils By Modified Kjeldahl Method
ASTM D322-97(2002)e1 Standard Test Method for Gasoline Diluent in Used Gasoline Engine Oils by Distillation
ASTM D3228-03 Standard Test Method for Total Nitrogen in Lubricating Oils and Fuel Oils by Modified Kjeldahl Method
ASTM D3228-08 Standard Test Method for Total Nitrogen in Lubricating Oils and Fuel Oils by Modified Kjeldahl Method
ASTM D322-97(2016) Standard Test Method for Gasoline Diluent in Used Gasoline Engine Oils by Distillation
ASTM D3228-05 Standard Test Method for Total Nitrogen in Lubricating Oils and Fuel Oils by Modified Kjeldahl Method
ASTM D6556-09 Standard Test Method for Carbon Black-Total and External Surface Area by Nitrogen Adsorption
ASTM D6556-14 Standard Test Method for Carbon Blackmdash;Total and External Surface Area by Nitrogen Adsorption
ASTM D6556-21 Standard Test Method for Carbon Black—Total and External Surface Area by Nitrogen Adsorption
ASTM D3228-08(2014) Standard Test Method for Total Nitrogen in Lubricating Oils and Fuel Oils by Modified Kjeldahl Method
ASTM D5176-91(2003) Standard Test Method for Total Chemically Bound Nitrogen in Water by Pyrolysis and Chemiluminescence Detection
ASTM D5176-91(1995) Standard Test Method for Total Chemically Bound Nitrogen in Water by Pyrolysis and Chemiluminescence Detection
ASTM D5176-08 Standard Test Method for Total Chemically Bound Nitrogen in Water by Pyrolysis and Chemiluminescence Detection
ASTM UOP432-65T Total Nitrogen in Liquefied Petroleum Gases by Acid Extraction-Kjeldahl Procedure
ASTM D5176-08(2015) Standard Test Method for Total Chemically Bound Nitrogen in Water by Pyrolysis and Chemiluminescence Detection
ASTM D8083-16(2023) Standard Test Method for Total Nitrogen, and Total Kjeldahl Nitrogen (TKN) by Calculation, in Water by High Temperature Catalytic Combustion and Chemiluminescence Detection
ASTM D8247-19 Standard Test Method for Determination of Total Fluorine and Total Chlorine in Coal by Oxidative Pyrohydrolytic Combustion Followed by Ion Chromatography Detection
ASTM D6556-16 Standard Test Method for Carbon Black&x2014;Total and External Surface Area by Nitrogen Adsorption
ASTM D4661-23 Standard Test Methods for Polyurethane Raw Materials: Determination of Total Chlorine in Isocyanates
ASTM D7623-20 Standard Test Method for Total Mercury in Crude Oil Using Combustion-Gold Amalgamation and Cold Vapor Atomic Absorption Method
ASTM D7623-10(2015) Standard Test Method for Total Mercury in Crude Oil Using Combustion-Gold Amalgamation and Cold Vapor Atomic Absorption Method
ASTM D3684-01 Standard Test Method for Total Mercury in Coal by the Oxygen Bomb Combustion/Atomic Absorption Method
ASTM D3684-94(2000) Standard Test Method for Total Mercury in Coal by the Oxygen Bomb Combustion/Atomic Absorption Method
ASTM D3684-01(2006) Standard Test Method for Total Mercury in Coal by the Oxygen Bomb Combustion/Atomic Absorption Method
ASTM D4661-98 Standard Test Methods for Polyurethane Raw Materials Determination of Total Chlorine in Isocyanates
ASTM D4661-18 Standard Test Methods for Polyurethane Raw Materials: Determination of Total Chlorine in Isocyanates
ASTM D4661-13 Standard Test Methods for Polyurethane Raw Materials: Determination of Total Chlorine in Isocyanates
ASTM C1494-01 Standard Test Methods for Determination of Mass Fraction of Carbon, Nitrogen, and Oxygen in Silicon Nitride Powder
ASTM D4468-85(2011) Standard Test Method for Total Sulfur in Gaseous Fuels by Hydrogenolysis and
Rateometric Colorimetry
ASTM D5475-93(1997) Standard Test Method for Nitrogen- and Phosphorus-Containing Pesticides in Water by Gas Chromatography with a Nitrogen-Phosphorus Detector
ASTM D6979-13 Standard Test Method for Polyurethane Raw Materials: Determination of Basicity in Polyols, Expressed as Percent Nitrogen
ASTM D6979-24 Standard Test Method for Polyurethane Raw Materials: Determination of Basicity in Polyols, Expressed as Percent Nitrogen
ASTM D5622-95(2000) Standard Test Methods for Determination of Total Oxygen in Gasoline and Methanol Fuels by Reductive Pyrolysis
ASTM D5622-17 Standard Test Methods for Determination of Total Oxygen in Gasoline and Methanol Fuels by Reductive Pyrolysis
ASTM D6366-99 Standard Test Method for Total Trace Nitrogen and Its Derivatives in Liquid Aromatic Hydrocarbons by Oxidative Combustion and Electrochemical Detection
ASTM D4468-85(2000) Standard Test Method for Total Sulfur in Gaseous Fuels by Hydrogenolysis and Rateometric Colorimetry
ASTM D4468-85(2015) Standard Test Method for Total Sulfur in Gaseous Fuels by Hydrogenolysis and Rateometric Colorimetry
ASTM D6979-18 Standard Test Method for Polyurethane Raw Materials: Determination of Basicity in Polyols, Expressed as Percent Nitrogen
ASTM C1494-13(2018) Standard Test Methods for Determination of Mass Fraction of Carbon, Nitrogen, and Oxygen in Silicon Nitride Powder
ASTM D6016-17(2023) Standard Test Method for Determination of Nitrogen, Water Extractable in Leather

CZ-CSN, The principle of the determination method of total nitrogen

CSN 65 4836-1983 Minerál fertilizers Methode for determination of total nitrogen content
CSN 58 0703-7-1999 Testing methods of dehydrated products and seasonings - Part 7: Determinaton of total nitrogen
CSN 65 0176 Cast.7-1979 Testing methods for tarch. Determination of nitrogen
CSN 83 0540 Cast.13-1984 Chemical and physical analysis of waste water Determination of organic and total nitrogen
CSN 65 1025 Cast.10-1989 Sulphuric acid for industrial use. pectrophotometric method for the etermination of total nitrogen xides
CSN ISO 9507:1993 Iron ores. Determination of total iron content. Titanium (III) chloride reduction methods
CSN ISO 7393-3:1995 Water quality. Determination of free chlorine and total chlorine. Part 3: Iodometric titration method for the determination of total chlorine

Association of Official Analytical Chemists (AOAC), The principle of the determination method of total nitrogen

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

German Institute for Standardization, The principle of the determination method of total nitrogen

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 51732:2014 Testing of solid mineral fuels - Determination of total carbon, hydrogen and nitrogen - Instrumental methods
DIN 51732:2007 Testing of solid mineral fuels - Determination of total carbon, hydrogen and nitrogen - Instrumental methods
DIN 51732:2014-07 Testing of solid mineral fuels - Determination of total carbon, hydrogen and nitrogen - Instrumental methods
DIN EN 16168:2012-11 Sludge, treated biowaste and soil - Determination of total nitrogen using dry combustion method; German version EN 16168:2012
DIN EN 13716:2003-05 Surface active agents - Determination of total base nitrogen - Potentiometric titration; German version EN 13716:2001
DIN EN ISO 14891:2002-07 Milk and milk products - Determination of nitrogen content - Routine method using combustion according to the Dumas principle (ISO 14891:2002); German version EN ISO 14891:2002
DIN EN ISO 8968-1:2014-06 Milk and milk products - Determination of nitrogen content - Part 1: Kjeldahl principle and crude protein calculation (ISO 8968-1:2014); German version EN ISO 8968-1:2014
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 EN 15104:2011 Solid biofuels - Determination of total content of carbon, hydrogen and nitrogen - Instrumental methods; German version EN 15104:2011
DIN EN ISO 8968-1:2014 Milk and milk products - Determination of nitrogen content - Part 1: Kjeldahl principle and crude protein calculation (ISO 8968-1:2014); German version EN ISO 8968-1:2014
DIN EN ISO 16634-1:2009 Food products - Determination of the total nitrogen content by combustion according to the Dumas principle and calculation of the crude protein content - Part 1: Oilseeds and animal feeding stuffs (ISO 16634-1:2008); English version of DIN EN ISO 16634-1:
DIN EN ISO 16634-1:2009-07 Food products - Determination of the total nitrogen content by combustion according to the Dumas principle and calculation of the crude protein content - Part 1: Oilseeds and animal feeding stuffs (ISO 16634-1:2008); German version EN ISO 16634-1:2008
DIN EN 25663:1993-11 Water quality; determination of Kjeldahl nitrogen; method after mineralization with selenium (ISO 5663:1984); German version EN 25663:1993

IN-BIS, The principle of the determination method of total nitrogen

IS 5194-1969 Determination method of nitrogen-Kjeldahl method
IS 3708 Pt.8-1986 Test methods for natural rubber latex Part 8 Determination of total nitrogen [NRL: 12]
IS 3859-1966 Method for determination of intensity of water-soluble azo dyes using titanium trichloride reduction method
IS 6092 Pt.2-1985 Fertilizer Sampling and Testing Methods Part 2 Determination of Nitrogen

Korean Agency for Technology and Standards (KATS), The principle of the determination method of total nitrogen

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 11261:2008 Soil quality-Determination of total nitrogen-Modified Kjeldahl method
KS H ISO 1871-2013(2018) Agricultural food products ― General directions for the determination of nitrogen by the Kjeldahl method
KS M ISO 5315-2007(2012) Fertilizers－Determination of total nitrogen content－Titrimetric method after distillation
KS M ISO 6851-2002(2022) Photography－Processing waste－Determination of total amino nitrogen－Microdiffusion Kjeldahl method
KS M 2112-2011 Crude petroleum and petroleum products-Determination of nitrogen content
KS M ISO 5315:2007 Fertilizers-Determination of total nitrogen content-Titrimetric method after distillation
KS M ISO 5315:2013 Fertilizers－Determination of total nitrogen content－Titrimetric method after distillation
KS M ISO 6851-2002(2017) Photography－Processing waste－Determination of total amino nitrogen－Microdiffusion Kjeldahl 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 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 1811-2023 Methods for determination of nitrogen in iron and steel
KS M ISO 6851:2002 Photography-Processing waste-Determination of total amino nitrogen-Microdiffusion Kjeldahl method
KS M ISO 6851-2022 Photography－Processing waste－Determination of total amino nitrogen－Microdiffusion Kjeldahl method
KS D 1811-2003 Methods for determination of nitrogen in iron and steel
KS I ISO 13878:2009 Soil quality－Determination of total nitrogen content by dry combustion(“elemental analysis”)
KS M 9102-1996(2001) WATER QUALITY-DETERMINATION OF TOTAL MERCURY BY FLAMELESS ATOMIC ABSORPTION SPECTROMETRY(METHOD AFTER PRETREATMENT WITH ULTRAVIOLET RADITION)
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 D 2573-2020 Methods for determination of nitrogen in zirconium and zirconium alloys
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 I ISO 9174-2008(2018) Water quality－Determination of total chromium－Atomic absorption spectrometric methods
KS I ISO 9174-2018 Water quality－Determination of total chromium－Atomic absorption spectrometric methods
KS E ISO 6130:2021 Chromium ores — Determination of total iron content —Titrimetric method after reduction
KS E ISO 6130:2011 Chromium ores－Determination of total iron content－Titrimetric method after reduction
KS D 0275-1993 Method of measuring surface hardness for nitrided iron and stee1
KS D ISO 4491-4:2003 Metallic powders-Determination of oxygen content by reduction methods-Part 4:Total oxygen by reduction-extraction
KS M ISO 5400:2012 Leather-Determination of total silicon content-Reduced molybdosilicate spectrometric method
KS E ISO 10213-2011(2016) Aluminium ores－Determination of total iron content－Titanium trichloride reduction method
KS M 9102-1996 Water quality-Determination of total mercury by flameless atomic absorption spectrometry(Method after pretreatment with ultraviolet radiation)
KS D ISO 4491-4-2003(2018) Metallic powders - Determination of oxygen content by reduction methods Part 4 : Total oxygen by reduction-extraction
KS M 9103-1996(2001) WATER QUALITY- DETERMINATION OF TOTAL MERCURY BY FLAMELESS ATOMIC ABSORPTION SPECTROMERTY(METHOD AFTER DIGESTION WITH BROMIN)
KS E ISO 10213:2011 Aluminium ores－Determination of total iron content－Titanium trichloride reduction method
KS E ISO 9507:2012 Iron ores-Determination of total iron content-Titanium(III) chloride reduction methods
KS E ISO 10213:2021 Aluminium ores — Determination of total iron content —Titanium trichloride reduction method
KS E ISO 9507-2022 Iron ores－Determination of total iron content－Titanium(III) chloride reduction methods
KS E ISO 2597-2:2009 Iron ores－Determination of total iron content－Part 2：Titrimetric methods after titanium(III) chloride reduction
KS K 0160-2007 Test method for total alkali content in wet processed textiles
KS M ISO 5400-2012(2022) Leather－Determination of total silicon content－Reduced molybdosilicate spectrometric method

International Organization for Standardization (ISO), The principle of the determination method of total nitrogen

ISO 11261:1995 Soil quality - Determination of total nitrogen - Modified Kjeldahl method
ISO 5315:1984 Fertilizers; Determination of total nitrogen content; Titrimetric method after distillation
ISO 14891:2002 | IDF 185:2002 Milk and milk products — Determination of nitrogen content — Routine method using combustion according to the Dumas principle
ISO 3331:1975 Ammonium nitrate for industrial use — Determination of total nitrogen content — Titrimetric method after distillation
ISO 29541:2010 Solid mineral fuels - Determination of total carbon, hydrogen and nitrogen content - Instrumental method
ISO 8968-1:2014 | IDF 20-1:2014 Milk and milk products — Determination of nitrogen content — Part 1: Kjeldahl principle and crude protein calculation
ISO 20921:2019 Textiles — Determination of stable nitrogen isotope ratio in cotton fibres
ISO 13878:1998 Soil quality - Determination of total nitrogen content by dry combustion ("elemental analysis")
ISO 14891:2002 Milk and milk products - Determination of nitrogen content - Routine method using combustion according to the Dumas principle
ISO 14891:2002|IDF 185:2002 Determination of nitrogen content in milk and milk products using the conventional combustion method according to the Dumas principle
ISO 9174:1990 Water quality; determination of total chromium; atomic absorption spectrometric methods
ISO/TS 12902:2001 Solid mineral fuels - Determination of total carbon, hydrogen and nitrogen - Instrumental methods
ISO/CD 29541:1976 Solid mineral fuels — Determination of total carbon, hydrogen and nitrogen content — Instrumental method
ISO 9508:1990 Iron ores; determination of total iron content; silver reduction titrimetric 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 914:1977 Sulphuric acid and oleum for industrial use; Determination of total nitrogen content; Titrimetric method after distillation
ISO 16634-1:2008 Food products - Determination of the total nitrogen content by combustion according to the Dumas principle and calculation of the crude protein content - Part 1: Oilseeds and animal feeding stuffs
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 4491-4:2019 Metallic powders — Determination of oxygen content by reduction methods — Part 4: Total oxygen by reduction-extraction
ISO 6851:2001 Photography - Processing waste - Determination of total amino nitrogen (microdiffusion Kjeldahl method)
ISO 2597-2:2008 Iron ores - Determination of total iron content - Part 2: Titrimetric methods after titanium(III)chloride reduction
ISO 2597-2:2015 Iron ores - Determination of total iron content - Part 2: Titrimetric methods after titanium(III) chloride reduction
ISO 8968-1:2014 Milk and milk products - Determination of nitrogen content - Part 1: Kjeldahl principle and crude protein calculation

AENOR, The principle of the determination method of total nitrogen

UNE 77318:2001 Soil quality. Determination of total nitrogen. Modified Kjeldahl method.
UNE 34080:1974 ANALYSIS METHODS FOR CHOCOLATES. DETERMINATION OF TOTAL NITROGEN. (PROTEINS).
UNE 84047:1995 COSMETIC RAW MATERIALS. DETERMINATION OF NITROGEN. KJEDHAL'S METHOD (SEMI-MICRO).
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-EN 13716:2002 Surface active agents - Determination of total base nitrogen - Potentiometric titration.
UNE-EN ISO 14891:2002 Milk and milk products - Determination of nitrogen content - Routine method using combustion according to the Dumas principle. (ISO 14891:2002)
UNE-EN ISO 8968-1:2014 Milk and milk products - Determination of nitrogen content - Part 1: Kjeldahl principle and crude protein calculation (ISO 8968-1:2014)
UNE 32008:1995 COAL. DETERMINATION OF TOTAL SULPHUR. ESCHKA METHOD.
UNE 59027:1988 LEATHER. DETERMINATION OF TOTAL SILICON CONTENT. REDUCED MOLYBDOSILICATE SPECTROMETRIC METHOD

Professional Standard - Agriculture, The principle of the determination method of total nitrogen

GB 609-1988 General method for the determination of total nitrogen content of chemical reagents
GB/T 42955-2023 Determination of total nitrogen content in fertilizers Dumas combustion method
HJ 199-2023 Determination of total nitrogen in water quality by gas phase molecular absorption spectrometry
GB 10511-1989 Determination of total nitrogen content in nitrophosphate fertilizers Titration after distillation
NY 146.17-1988 Determination method for total phosphorus in fruit juice
NY 146.8-1988 Method for Determination of Fruit Juice Determination of Total Ash
NY/T 1099-2006 Determination of total arsenic in rice.Atomic fluorescence spectrometry
GB/T 5009.11-1996 Determination method of total arsenic in food
GB/T 5009.17-1996 Determination method of total mercury in food

PH-BPS, The principle of the determination method of total nitrogen

PTS 98-1970 Standardization of the Method of Test for the Determination of Total Nitrogen Content.Devarda Method
PTS 86-1970 Method of Test for the Determination of Armoniacal Nitrogen
PTS 83-1970 Method of Test for the Determination of Nitrogen Content of Nitrate-Free Fertilizers

ES-AENOR, The principle of the determination method of total nitrogen

UNE 55-595-1981 Determination of total content of sulfuric acid and nitrogen in detergent formulation raw materials by post-distillation volumetric method
UNE 55-709-1984 General method for determination of iron content in raw materials for detergent formulations and spectroscopic determination of phenanthroline

Danish Standards Foundation, The principle of the determination method of total nitrogen

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 16168:2013 Sludge, treated biowaste and soil - Determination of total nitrogen using dry combustion method
DS/EN 13716:2002 Surface active agents - Determination of total base nitrogen - Potentiometric titration
DS/EN ISO 14891:2002 Milk and milk products - Determination of nitrogen content - Routine method using combustion according to the Dumas principle
DS/ISO 29541:2011 Solid mineral fuels - Determination of total carbon, hydrogen and nitrogen content - Instrumental method
DS/EN 15104:2011 Solid biofuels - Determination of total content of carbon, hydrogen and nitrogen - Instrumental methods
DS/ISO 29441:2010 Water quality - Determination of total nitrogen after UV digestion - Method using flow analysis (CFA and FIA) and spectrometric detection
DS/ISO/TR 21582:2021 Pyrogenicity – Principles and methods for pyrogen testing of medical devices
DS/EN 24491-4:1993 Metallic powders. Determination of oxygen content by reduction methods. Part 4: Total oxygen by reduction-extraction

Lithuanian Standards Office , The principle of the determination method of total nitrogen

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 16168-2012 Sludge, treated biowaste and soil - Determination of total nitrogen using dry combustion method
LST EN 13716-2002 Surface active agents - Determination of total base nitrogen - Potentiometric titration
LST EN ISO 14891:2003 Milk and milk products - Determination of nitrogen content - Routine method using combustion according to the Dumas principle (ISO 14891:2002)
LST EN 15104-2011 Solid biofuels - Determination of total content of carbon, hydrogen and nitrogen - Instrumental methods

European Committee for Standardization (CEN), The principle of the determination method of total nitrogen

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 14891:2002 Milk and Milk Products - Determination of Nitrogen Content - Routine Method Using Combustion According to the Dumas Principle
EN 15750:2009 Fertilizers - Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods
EN 16168:2012 Sludge, treated biowaste and soil - Determination of total nitrogen using dry combustion method
EN 15104:2011 Solid biofuels - Determination of total content of carbon, hydrogen and nitrogen - Instrumental methods
EN ISO 16634-1:2008 Food products - Determination of the total nitrogen content by combustion according to the Dumas principle and calculation of the crude protein content - Part 1: Oilseeds and animal feeding stuffs (ISO 16634-1:2008)
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)

Association of German Mechanical Engineers, The principle of the determination method of total nitrogen

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

未注明发布机构, The principle of the determination method of total nitrogen

DIN 51732 E:2013-07 Testing of solid mineral fuels - Determination of total carbon, hydrogen and nitrogen - Instrumental methods
DIN EN ISO 8968-1 E:2013-04 Determination of nitrogen content of milk and milk products Part 1: Principles of Kjeldahl method and calculation of crude protein (draft)
ASTM RR-D19-1194 2016 D8083-Test Method for Total Nitrogen, and Total Kjeldahl Nitrogen (TKN) by Calculation, in Water by High Temperature Catalytic Combustion and Chemiluminescence Detection
ASTM RR-D20-1239 2003 D6979-Test Method for Polyurethane Raw Materials: Determination of Basicity in Polyols, Expressed as Percent Nitrogen
DIN EN 14211:2005 Air quality — measurement method for determining the concentration of nitrogen dioxide and nitrogen monoxide using chemiluminescence
AS 1050.12:1983(R2016) Steel analysis methods Determination of nitrogen in steel (steam distillation titration method)
ASTM RR-D02-1692 2010 D7622-Test Method for Total Mercury in Crude Oil Using Combustion and Direct Cold Vapor Atomic Absorption Method with Zeeman Background Correction
ASTM RR-D31-1024 2019 D8284-Test method for the Determination of the total alkalinity
ASTM RR-D02-1338 1994 D5622-Standard Test Methods for Determination of Total Oxygen in Gasoline and Methanol Fuels by Reductive Pyrolysis
ASTM RR-D31-1008 1996 D2868-Standard Test Method for Nitrogen Content (Kjeldahl) and Hide Substance Content of Leather

国家市场监督管理总局、中国国家标准化管理委员会, The principle of the determination method of total nitrogen

GB/T 40723-2021 Rubber—Determination the contents of total sulfur and total nitrogen — Automatic analyser method
GB/T 17674-2021 Determination of nitrogen in crude oil—Boat-inlet chemiluminescence
GB/T 39306-2020 Reclaimed water quality—Determination of total arsenic—Atomic fluorescence spectrometry

RO-ASRO, The principle of the determination method of total nitrogen

SR ISO 5315:1984 Fertilizers. Determination of totai nitrogen content.Titrimetric method after distilation
SR ISO 589:1981 Hard coal. Determination of tqtal moisture
STAS SR 13366-1996 Sodium chloride. Determination of total mercury. Flameless Atomic Absorption Spectrometric Method
STAS SR 13348-1-1996 Tea. Analysis methods. Determination of proteic nitrogen by the Kjeldahl method. Spectrophotometric method

Professional Standard - Urban Construction, The principle of the determination method of total nitrogen

CJ/T 77-1999 Municipal sewage.Determination of total nitrogen.Distillation and titration method
CJ 26.27-1991 Municipal sewage water quality inspection method standard Determination of total nitrogen Titration method after distillation

GSO, The principle of the determination method of total nitrogen

GSO ISO 6851:2015 Photography -- Processing waste -- Determination of total amino nitrogen (microdiffusion Kjeldahl method)
GSO ISO 2597-2:2016 Iron ores -- Determination of total iron content -- Part 2: Titrimetric methods after titanium(III) chloride reduction

Japanese Industrial Standards Committee (JISC), The principle of the determination method of total nitrogen

JIS H 1685:2000 Method for determination of nitrogen in tantalum
JIS G 1228:1997 Iron and steel -- Methods for determination of nitrogen content
JIS K 0400-65-10:1998 Water quality -- Determination of total chromium -- Atomic absorption spectrometric methods
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 0170-3:2011 Testing methods for water quality by flow analysis -- Part 3: Total nitrogen
JIS K 0170-3:2019 Testing methods for water quality by flow analysis -- Part 3: Total nitrogen
JIS G 1228 AMD 1:2006 Iron and steel -- Methods for determination of nitrogen content (Amendment 1)
JIS K 0104:2011 Methods for determination of nitrogen oxides in flue gas
JIS K 0400-44-40:2000 Water quality -- Determination of Kjeldahl nitrogen -- Method after mineralization with selenium

International Dairy Federation (IDF), The principle of the determination method of total nitrogen

IDF 185-2002 Milk and milk products - Determination of nitrogen content - Routine method using combustion according to the Dumas principle
IDF 20-1-2014 Milk and milk products - Determination of nitrogen content - Part 1: Kjeldahl principle and crude protein calculation

KR-KS, The principle of the determination method of total nitrogen

KS D 1811-2003(2023) Methods for determination of nitrogen in iron and steel
KS M ISO 8603-2007 Solid fertilizers－Determination of urea nitrogen content－Gravimetric method using xanthydrol
KS E ISO 6130-2021 Chromium ores — Determination of total iron content —Titrimetric method after reduction
KS D 0275-1993(2023) Method of measuring surface hardness for nitrided iron and steel
KS E ISO 10213-2021 Aluminium ores — Determination of total iron content —Titanium trichloride reduction method

YU-JUS, The principle of the determination method of total nitrogen

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 H.G8.489-1991 Reagents. Potassium permanganate. Determination of total nitrogen content. Colorimetric method
JUS H.G8.514-1991 Reagents. Potassium hydroxide. Determination of total nitrogen content. Colorimetric method
JUS H.G8.298-1987 Reagents. Oxaiic acid dihydrate. Determination of total nitrogen content. Colorimetric metbod
JUS H.G8.158-1984 Reagents. Sodium carbonate anhydrous and sodium carbonate decahydrate. Determination of total ni-trogen contont. Colorimetric method
JUS C.A1.409-1982 Methods for chemical analysi$ of ferroalloys. Titrimetric determination ofnitrogen in ferro-chromium

Professional Standard - Commodity Inspection, The principle of the determination method of total nitrogen

SN/T 3097-2012 Determination of total nitrogen in fertelezers.Combustion
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 2115-2008 Determination of the hotel nitrogen content and calculation of the crude protein content in food and feed for import and export.Combustion according to the Dumas principle

VDI - Verein Deutscher Ingenieure, The principle of the determination method of total nitrogen

VDI 2456-2003 Messen gasfoermiger Emissionen - Bestimmung der Summe von Stickstoffmonoxid und Stickstoffdioxid - Ionenchromatographisches Verfahren

PT-IPQ, The principle of the determination method of total nitrogen

NP 1612-2002 Meat and meat products Determination of nitrogen content Reference method

ES-UNE, The principle of the determination method of total nitrogen

UNE-EN 16168:2012 Sludge, treated biowaste and soil - Determination of total nitrogen using dry combustion method (Endorsed by AENOR in October of 2012.)

Professional Standard - Tobacco, The principle of the determination method of total nitrogen

YC/T 33-1996 Tobacco and tobacco products-Determination of total nitrogen-Kjeldahl method
YC/T 161-2002 Tobacco and tobacco products----Determination of total nitrogen----Continuous flow method

Tianjin Provincial Standard of the People's Republic of China, The principle of the determination method of total nitrogen

DB12/T 1023-2020 Determination of total nitrogen content in organic fertilizers Dumas combustion method
DB12/T 512-2014 Determination method of nitrate nitrogen in soil samples

BE-NBN, The principle of the determination method of total nitrogen

NBN V 21-013-1978 Determination of the total nitrogen contaimng substances content of milk - Amido black method
NBN T 03-056-1979 Ammonium nitrate for industrial use - Determination of total nitrogen content - Titrimetric method after distillation
NBN T 04-301-1983 Urea for industrial use - Determination of nitrogen content - Titrimetric raethod after distillation

Henan Provincial Standard of the People's Republic of China, The principle of the determination method of total nitrogen

DB41/T 1704-2018 Determination of total nitrogen content in compound fertilizers Dumas combustion method

AT-ON, The principle of the determination method of total nitrogen

ONORM ISO 5666 Teil.2:1984 Water quality; determination of total mercury by flameless atomic absorption spectrometry; method after pretreatment with ultraviolett radiation
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

GOST, The principle of the determination method of total nitrogen

GOST R 50255-1992 Solid mineral fuels. Methods for the determination of nitrogen

Professional Standard - Non-ferrous Metal, The principle of the determination method of total nitrogen

YS/T 587.15-2023 Calcined coke for prebaked blocks— Part 15: Determination of total carbon,hydrogen and nitrogen contents
YS/T 575.14-2006 Chemical analysis method of bauxite ore-tribromoarsine spectrophotometric determination of total rare earth oxides
YS/T 575.14-2007 Methods for chemical analysis of bauxite.Part 14:Determination the total content of rare earth oxide.Tribromo-arsenazo photometric method

Yunnan Provincial Standard of the People's Republic of China, The principle of the determination method of total nitrogen

DB53/T 624-2014 Determination of Nitrate Nitrogen and Nitrite Nitrogen in Coking Wastewater by Dairyler's Alloy Reduction-Neutralization Titration

Qinghai Provincial Standard of the People's Republic of China, The principle of the determination method of total nitrogen

DB63/T 1207-2013 Determination of Total Selenium in Soil by Atomic Fluorescence Spectrometry

CEN - European Committee for Standardization, The principle of the determination method of total nitrogen

PD CEN/TS 15104:2005 Solid biofuels - Determination of total content of carbon@ hydrogen and nitrogen - Instrumental methods
EN ISO 8968-4:2001 Milk - Determination of Nitrogen Content - Part 4: Determination of Non-Protein Nitrogen Content

ZA-SANS, The principle of the determination method of total nitrogen

SANS 12902:2007 Solid mineral fuels - Determination of total carbon, hydrogen and nitrogen - Instrumental methods

Shandong Provincial Standard of the People's Republic of China, The principle of the determination method of total nitrogen

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

CU-NC, The principle of the determination method of total nitrogen

NC 26-124-1985 Drugs, Deterrnination of Nitrogen by Kjejdah!. Testing Method
NC 23-04-1968 Sulphuric acid. Determination oí total acidity. Volumetric method.

Professional Standard - Aviation, The principle of the determination method of total nitrogen

HB 5218.14-1995 Aluminum Alloy Chemical Analysis Method Tribromoarsine Spectrophotometric Determination of Total Rare Earth in Cerium Group
HB/Z 5218.14-2004 Methods for chemical analysis of aluminium alloys-Part 14:Determination of the cerium subgroup of rare earth elements content by tribromoarsenazo spectrophtometric 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, The principle of the determination method of total nitrogen

GB/T 35905-2018 Test methods for biomass—Determination of total solids in biomass
GB/T 33208-2016 Non-destructive testing—Practice for the blades on-line monitoring based on tip-timing theory

TR-TSE, The principle of the determination method of total nitrogen

TS 2428-1976 METHODS FOR THE CHEMICAL ANALYSIS OF IRON AND STEELS DETERMINATION OF NITROGEN CONTENT

NL-NEN, The principle of the determination method of total nitrogen

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 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

Jiangxi Provincial Standard of the People's Republic of China, The principle of the determination method of total nitrogen

DB36/T 689-2012 Chemical analysis method of ionic rare earth raw ore Determination of total amount of rare earth in ionic phase EDTA titration method

Professional Standard - Environmental Protection, The principle of the determination method of total nitrogen

HJ 667-2013 Water quality.Determination of total nitrogen by continuous flow analysis (CFA) and N-(1-naphthyl)ethylene diamine dihydrochloride spectrophotometry
HJ 668-2013 Water quality.Determination of total nitrogen by flow injection analysis (FIA) and N-(1-naphthyl)ethylene diamine dihydrochloride spectrophotometry
HJ 636-2012 Water quality.Determination of total nitrogen.Alkaline potassium persulfate digestion UV spectrophotometric method
HJ 597-2011 Water quality- Determination of total mercury -Cold atomic absorption spectrophotometry
HJ 491-2009 Soil quality.Determination of total chromium.Flame atomic absorption spectrometry

Professional Standard - Petroleum, The principle of the determination method of total nitrogen

SY/T 7517-2010 Determination for heat capacity of crude oil
SY 7517-2010 Determination method of specific heat capacity of crude oil

Professional Standard - Coal, The principle of the determination method of total nitrogen

MT/T 742.1-1997 Determination of total chrominum in mine water
MT/T 743.1-1997 Determination of total phosphorus in mine water
MT/T 742.1-2011 Determination of total chrominum in mine water
MT/T 743.1-2011 Determination of total phosphorus in mine water

Professional Standard - Rare Earth, The principle of the determination method of total nitrogen

XB/T 619-2015 Chemical analysis methods of ion type rare earth ore.Determination of total rare earth ion phase

Jiangsu Provincial Standard of the People's Republic of China, The principle of the determination method of total nitrogen

DB32/T 2155-2012 Determination of Total Arsenic in Compound Fertilizers by Atomic Fluorescence Spectrometry
DB32/T 2154-2012 Determination of Total Mercury in Compound Fertilizers by Atomic Fluorescence Spectrometry

国家质量监督检验检疫总局, The principle of the determination method of total nitrogen

SN/T 4429.1-2016 Determination of total mercury content in crude oil by gold amalgam cold atomic absorption spectrometry
SN/T 4429.2-2016 Determination of total mercury content in crude oil by Zeeman-corrected cold atomic absorption spectrometry

SE-SIS, The principle of the determination method of total nitrogen

SIS SS 02 84 23-1991 Air Quality — Stationary source emissions — Determination of the total mass concentration ofmercury — Flameless atomic absorption methods

Canadian Standards Association (CSA), The principle of the determination method of total nitrogen

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

Xinjiang Provincial Standard of the People's Republic of China, The principle of the determination method of total nitrogen

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

American National Standards Institute （ANSI), The principle of the determination method of total nitrogen

ANSI/PIMA IT4.47-1998 Photography (Processing) - Effluents - Determination of Total Amino Nitrogen - Microdiffusion Kjeldahl Method
ANSI/ASTM D4661:1998 Polyurethane-Isocyanate Raw Materials, Determination of Total Chlorine, Method for Testing (08.03)

International Telecommunication Union (ITU), The principle of the determination method of total nitrogen

ITU-T P.78-1996 Subjective Testing Method for Determination of Loudness Ratings in Accordance with Recommendation P.76 - Telephone Transmission Quality Measurements Related to Speech Loudness Study Group 12; 21 pp

Professional Standard - Water Conservancy, The principle of the determination method of total nitrogen

SL/T 271-2001 Water quality - Determination of total mercury - Potassium borohydride reduction - Cold atomic absorption spectrophotmetry