The principle of the determination method of total nitrogen

The principle of the determination method of total nitrogen, Total:274 items.

The international standard classification for "The principle of the determination method of total nitrogen" includes: Fertilizers , Inorganic chemicals in general , Chemical reagents , Edible oils and fats. Oilseeds , Cement. Gypsum. Lime. Mortar , Rubber , Animal feeding stuffs , Coals .

The Chinese standard classification for "The principle of the determination method of total nitrogen" includes: Chemical fertilizer and chemical soil conditioner , Inorganic chemicals in general , Basic standards and general methods on chemical fertilizers , Chemical reagent in general , Basic standards and general methods , Cement , Rubber products in general , Livestock and poultry feed and additive , Coal analysis methods , Photographic-grade chemicals , Soil and fertilizer in general , Tobacco .

Jilin Provincial Standard of the People's Republic of China

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

GB/T 42955-2023 Determination of total nitrogen content for fertilizers—Dumas combustion method
GB/T 9823-1988 Method for determination of total nitrogen content in oilseed residues
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 8572-2001 Determination of total nitrogen content for compound fertilizers--Titrimetric method after distillation
GB/T 2441.1-2008 Determination of urea - Part 1: Total nitrogen content
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 2441.1-2001 Determination of urea-Determination of total nitrogen content
GB/T 609-2006 Chemical Reagent - General Method for the Determination of Total Nitrogen
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 10209.1-2008 Determination of monoammonium phosphate and diammonium phoshpate - Part 1: Total nitrogen content
GB/T 41965-2022 Photography—Processing waste—Determination of total amino nitrogen (microdiffusion Kjeldahl method)
GB/T 43875-2024 Determination method of total chromium in cement raw materials
GB/T 40723-2021 Rubber—Determination the contents of total sulfur and total nitrogen — Automatic analyser method
GB 10511-1989 The determination of total nitrogen content for nitrophosphate titrimetric method after distillation
GB/T 23952-2009 Inorganic chemicals for industrial use—General method for the determination of total nitrogen content—Distillation-acid-base titrations method
GB 609-1988 General method for the determination of total nitrogen content of chemical reagents
GB/T 609-1988 Chemical reagent-General method for the determination of total nitrogen
GB/T 8572-2010 Determination of total nitrogen content for compound fertilizers titrimetric method after distillation
GB/T 10511-1989 The determination of total nitrogen content for nitrophosphate titrimetric method after distillation
GB/T 17767.1-2008 Determination of organic-inorganic compound fertilizers - Part 1: Total nitrogen content
GB/T 10511-2008 Determination of total nitrogen content for nitrophosphate - Titrimetric method after distillation
GB/T 23835.12-2009 Lithium perchlorate anhydrous - Part 12: Determination of total nitrogen content
GB/T 609-2018(XG1-2024) Chemical Reagents General Method for Determination of Total Nitrogen

Group Standards of the People's Republic of China

T/GXAS 477-2023 Determination of total nitrogen content in sugarcane juice —sulphuric acid titrimetric method
T/QAS 071-2021 Determination of total nitrogen in brine Kjeldahl method
T/CHES 15-2017 Determination of Total Nitrogen in Water Quality Gas Phase Molecular Absorption Spectrometry
T/NAIA 044-2021 Urine Total Nitrogen Determination in Livestock Kjeldahl Method

Hebei Provincial Standard of the People's Republic of China

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

Professional Standard - Urban Construction

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

Professional Standard - Agriculture

HJ 199-2023 Water quality―Determination of total nitrogen ―Gas-phase molecular absorption spectrometry
NY/T 2542-2014 Fertilizers. Determination of total nitrogen nitrogen content

Professional Standard - Commodity Inspection

SN/T 3097-2012 Determination of total nitrogen in fertilizers-Combustion

Professional Standard - Tobacco

YC/T 33-1996 Tobacco and tobacco products -- Determination of total nitrogen -- Kendal method

Professional Standard - Chemical Industry

HG/T 5669-2019 Textile dyeing and finishing auxiliaries- Determination of total nitrogen

Gosstandart of Russia

GOST R 58596-2019 Soils. Methods for determination of total nitrogen
GOST 10671.4-2016 Reagents. Methods for determination of total nitrogen impurity
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 26107-1984 Soils. Methods for determination of total nitrogen
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 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 R 54216-2010 Solid biofuels. Determination of total content of carbon, hydrogen and nitrogen by instrumental methods
GOST 34789-2021 Brewing products. Identification. Determination of mass concentration of total nitrogen by Kjeldahl method
GOST 32985-2014 Solid biofuels. Determination of carbon, hydrogen and nitrogen by instrumental methods
GOST 9853.1-1996 Sponge titanium. Method for determination of nitrogen
GOST 13020.7-1985 Metallic chrome. Methods for determination of nitrogen
GOST 9853.1-1979 Sponge titanium. Method for the determination of nitrogen
GOST EN 15478-2013 Fertilizers. Determination of total nitrogen in urea

Indonesia Standards

SNI 4146-2013 Method for determination of total nitrogen content in sediment by Kjeldahl titration method
SNI 4146:2013 Cara uji kadar nitrogen total sedimen dengan distilasi Kjeldahl secara titrasi
SNI 19-1501-1989 Test methods for total nitrogen oxide in air
SNI 13-4721-1998 Methods for determination of total nitrogen content in soils
SNI 06-6323-2000 Determination of total nitrogen content in peat

Standard Association of Australia （SAA）

AS 2300.1.2.1:1988 Methods of chemical and physical testing for the dairying industry, Method 1.2.1: General methods and principles - Determination of nitrogen - Reference Kjeldahl 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 1871.11:1976 List of methods for examination of waters Nitrogen (total Kjeldahl incl. ammoniacal)
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

British Standards Institution (BSI)

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 DD CEN/TS 15750:2008 Fertilizers. Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods
BS 5551-4.1.5:1993 Fertilizers. Chemical analysis. Determination of nitrogen.-Method for determination of urea nitrogen content (gravimetric method using xanthydrol)
BS 4267-2:1988(1999) Ammonium nitrate — Part 2 : Method for determination of total nitrogen content
BS ISO 20620:2021 Fertilizers and soil conditioners. Determination of total nitrogen by combustion
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 EN 15750:2010 Fertilizers. Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods
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
BS 4267-2:1988 Ammonium nitrate - Method for determination of total nitrogen content
BS DD ISO/TS 12902:2002 Solid mineral fuels. Determination of total carbon, hydrogen and nitrogen. Instrumental methods
BS 6068-2-2.38:1990 Water quality. Physical, chemical and biochemical methods-Methods for the determination of total chromium by atomic absorption spectrometry
BS DD CEN/TS 15104:2005 Solid biofuels — Determination of total content of carbon, hydrogen and nitrogen — Instrumental methods
BS DD CEN/TS 15104:2006 Solid biofuels - Determination of total content of carbon, hydrogen and nitrogen - Instrumental methods
PD CEN/TS 15478:2006 Fertilizers - Determination of total nitrogen in urea
BS EN 15478:2009 Fertilizers - Determination of total nitrogen in urea
BS 7020-4.3:1990 Analysis of iron ores. Method for the determination of total iron content-Silver reduction titrimetric method
BS EN 13716:2002 Surface active agents - Determination of total base nitrogen - Potentiometric titration
25/30481931 DC BS ISO 19615 Meat and fish products - Determination of total volatile basic nitrogen - Semi-micro nitrogen determination method
BS DD CEN/TS 15476:2006 Fertilizers - Determination of nitric and ammoniacal nitrogen according to Devarda

Association Francaise de Normalisation

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 Milk and dairy products - Determination of nitrogen content - Practical method by combustion according to the Dumas principle
NF EN 15750:2010 Fertilizers - Determination of the total nitrogen content of fertilizers containing nitrogen only in nitric, ammoniacal and urea form, using two different methods
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 U42-147*NF EN 15561:2009 Fertilizers - Determination of total nitrogen in calcium cyanamide containing nitrate
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 EN 15478:2009 Fertilizers - Determination of total nitrogen in urea
NF V59-202:1988 Collagenes. Determination of the nitrogen content.
NF EN 16168:2012 Sludge, treated biowaste and soil - Determination of total nitrogen content by dry combustion
NF ISO 20620:2022 Fertilizers and amendments - Determination of total nitrogen by combustion
NF T73-282*NF EN 13716:2002 Surface active agents - Determination of total base nitrogen - Potentiometric titration.
NF EN 13716:2002 Surfactants - Determination of total basic nitrogen content - Potentiometric titration

American Society for Testing and Materials (ASTM)

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 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(2024) Standard Test Method for Determination of Total Nitrogen, Total Kjeldahl Nitrogen by Calculation, and Total Phosphorus in Water, Wastewater by Ion Chromatography
ASTM D3590-02 Standard Test Methods for Total Kjeldahl Nitrogen in Water
ASTM D3590-17(2025) Standard Test Methods for Total Kjeldahl Nitrogen in Water
ASTM D3590-17 Standard Test Methods for Total Kjeldahl Nitrogen in Water
ASTM D3590-11 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 D3228-22 Standard Test Method for Total Nitrogen in Lubricating Oils and Fuel Oils by Modified Kjeldahl Method
ASTM E258-67(2002) Standard Test Method for Total Nitrogen in Organic Materials by Modified Kjeldahl Method
ASTM D6556-01a Standard Test Method for Carbon Black8212;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 D6556-10 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 D8083-24 Standard Test Method for Total Nitrogen, and Total Kjeldahl Nitrogen (TKN) by Calculation, in Water by High Temperature Catalytic Combustion and Chemiluminescence Detection
ASTM D6556-00a 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 D6556-01 Standard Test Method for Carbon Black8212;Total and External Surface Area by Nitrogen Adsorption
ASTM D6556-17 Standard Test Method for Carbon Black&x2014Total and External Surface Area by Nitrogen Adsorption
ASTM D6556-07 Standard Test Method for Carbon Black-Total and External Surface Area by Nitrogen Adsorption
ASTM D6556-02 Standard Test Method for Carbon Black8212;Total and External Surface Area by Nitrogen Adsorption
ASTM D3228-08(2019) Standard Test Method for Total Nitrogen in Lubricating Oils and Fuel Oils by Modified Kjeldahl Method
ASTM D6556-02a Standard Test Method for Carbon Black8212;Total and External Surface Area by Nitrogen Adsorption

COMMISSION FOR THE STANDARDS, METROLOGY AND QUALITY OF VIETNAM (STAMEQ)

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 5265-1990 Bee products.Determination of total nitrogen content
TCVN 6645-2000 Soil quality.Determination of total nitrogen content by dry combustion ("elemental analysis")

CZ-CSN

CSN 65 4836-1983 Minerál fertilizers Methode for determination of total nitrogen content
CSN 68 4124-1980 Determination of small mounts of total nitrogen
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

Standards Norway

NS-EN 15750:2009 Fertilizers — Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods
SN-CEN/TS 15750:2008 Fertilizers — Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods
SN-CEN/TS 15104:2005 Solid biofuels — Determination of total content of carbon, hydrogen and nitrogen — Instrumental methods
NS-EN 15104:2011 Solid biofuels — Determination of total content of carbon, hydrogen and nitrogen — Instrumental methods
NS-EN 16168:2012 Sludge, treated biowaste and soil — Determination of total nitrogen using dry combustion method
NS-EN 13716:2001 Surface active agents — Determination of total base nitrogen — Potentiometric titration
SN-CEN/TS 15478:2006 Fertilizers — Determination of total nitrogen in urea
NS-EN 15478:2009 Fertilizers — Determination of total nitrogen in urea

Association of Official Analytical Chemists (AOAC)

AOAC 991.20 AOAC Official Method 991.20 Nitrogen (Total) in Milk Kjeldahl Methods
AOAC Official Method 2001.14 Determination of total nitrogen in cheese

Danish Standards Foundation

DANSK DS/EN 15750:2009 Fertilizers - Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods
DS/EN 15750:2010 Fertilizers - Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods
DANSK DS/EN ISO 14891:2002 Milk and milk products - Determination of nitrogen content - Routine method using combustion according to the Dumas principle
DANSK DS/EN 16168:2012 Sludge, treated biowaste and soil - Determination of total nitrogen using dry combustion method
DS/EN 16168:2013 Sludge, treated biowaste and soil - Determination of total nitrogen using dry combustion method
DS/EN ISO 14891:2002 Milk and milk products - Determination of nitrogen content - Routine method using combustion according to the Dumas principle
DS/EN 13716:2002 Surface active agents - Determination of total base nitrogen - Potentiometric titration
DANSK DS/CEN/TS 15104:2005 Solid biofuels - Determination of total content of carbon, hydrogen and nitrogen - Instrumental methods
DANSK DS/EN 15478:2009 Fertilizers - Determination of total nitrogen in urea
DS/EN 15478:2009 Fertilizers - Determination of total nitrogen in urea
DANSK DS/EN 13716:2002 Surface active agents - Determination of total base nitrogen - Potentiometric titration
DS/EN 13342:2001 Characterisation of sludges - Determination of total Kjeldahl nitrogen

Swedish Institute for Standards

SS-ISO 11261:1996 Soil quality - Determination of total nitrogen - Modified Kjeldahl method
SS-EN 15750:2009 Fertilizers - Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods
SS-EN 16168:2012 Sludge, treated biowaste and soil - Determination of total nitrogen using dry combustion method
SS-EN 15478:2009 Fertilizers - Determination of total nitrogen in urea
SS 28101:1992 Nitrogen content of water - Determination with Kjeldahl method after reduction with Devarda's alloy
SS-EN 13716:2002 Surface active agents - Determination of total base nitrogen - Potentiometric titration

German Institute for Standardization

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 EN 15750 E:2009 Draft Document - Fertilizers - Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods; German version prEN 15750:2009
DIN EN 15750 E:2009-04 Draft Document - Fertilizers - Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods; German version prEN 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 ISO 11261:1997-05 Soil quality - Determination of total nitrogen - Modified Kjeldahl method (ISO 11261:1995)
DIN 51732 E:2013-07 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 51732:2014 Testing of solid mineral fuels - Determination of total carbon, hydrogen and nitrogen - Instrumental methods
DIN 51732:2007-08 Testing of solid mineral fuels - Determination of total carbon, hydrogen and nitrogen - Instrumental methods
DIN EN 15104:2011-04 Solid biofuels - Determination of total content of 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 CEN/TS 15104:2005 Solid biofuels - Determination of total content of carbon, hydrogen and nitrogen - Instrumental methods; German version CEN/TS 15104:2005
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)
DIN 51732 E:2013 Draft Document - Testing of solid mineral fuels - Determination of total carbon, hydrogen and nitrogen - Instrumental methods
DIN EN 15478:2009-04 Fertilizers - Determination of total nitrogen in urea; German version EN 15478:2009
DIN EN 15478:2009 Fertilizers - Determination of total nitrogen in urea; English version of DIN EN 15478:2009-04
DIN EN 15104 E:2010 Draft Document - Solid biofuels - Determination of total content of carbon, hydrogen and nitrogen - Instrumental methods; German version FprEN 15104:2010
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 15104 E:2010-07 Draft Document - Solid biofuels - Determination of total content of carbon, hydrogen and nitrogen - Instrumental methods; German version FprEN 15104:2010

Spanish Association for Standardization (UNE)

AENOR 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 34080:1974 ANALYSIS METHODS FOR CHOCOLATES. DETERMINATION OF TOTAL NITROGEN. (PROTEINS).
UNE 55-595-1981 Determination of total content of sulfuric acid and nitrogen in detergent formulation raw materials by post-distillation volumetric method
UNE 77318:2001 Soil quality. Determination of total nitrogen. Modified Kjeldahl 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 84047:1995 COSMETIC RAW MATERIALS. DETERMINATION OF NITROGEN. KJEDHAL'S METHOD (SEMI-MICRO).
AENOR UNE 55595:1981 Surface agents. Sulfuric acid and oleums used as raw materials for detergent formulations. Determination of total nitrogen. Volumetric method after distilling.
UNE-EN 13716:2002 Surface active agents - Determination of total base nitrogen - Potentiometric titration.
UNE-CEN/TS 15104:2008 EX Solid biofuels - Determination of total content of carbon, hydrogen and nitrogen - Instrumental methods
UNE-EN 15478:2009 Fertilizers - Determination of total nitrogen in urea
UNE-CEN/TS 15478:2007 EX Fertilizers - Determination of total nitrogen in urea
UNE-EN 16168:2012 Sludge, treated biowaste and soil - Determination of total nitrogen using dry combustion method (Endorsed by AENOR in October of 2012.)
UNE 55-709-1984 General method for determination of iron content in raw materials for detergent formulations and spectroscopic determination of phenanthroline

Korean Agency for Technology and Standards (KATS)

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 I ISO 11261-2008(2018) 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 6851-2002(2017) Photography－Processing waste－Determination of total amino nitrogen－Microdiffusion Kjeldahl method
KS M ISO 5315:2013 Fertilizers－Determination of total nitrogen content－Titrimetric method after distillation
KS D 2555-1995 Methods for determination of nitrogen in tantalum
KS D 2555-2015 Methods for determination of nitrogen in tantalum
KS M ISO 6851-2022 Photography－Processing waste－Determination of total amino nitrogen－Microdiffusion Kjeldahl method
KS M ISO 6851:2002 Photography-Processing waste-Determination of total amino nitrogen-Microdiffusion Kjeldahl method
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 D 1811-1993 Methods for determination of nitrogen in iron and steel
KS D 1811-2003(2023) Methods for determination of nitrogen in iron and steel
KS D 2555-2020 Determination of nitrogen in tantalum

IN-BIS

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

Japanese Industrial Standards Committee (JISC)

JIS K 2609:1990 Crude petroleum and petroleum products -- Determination of nitrogen content
JIS H 1685:2000 Method for determination of nitrogen in tantalum
JIS H 1685:1976(1986) Methods for Determination of Nitrogen in Tantalum

International Organization for Standardization (ISO)

ISO 11261:1995 Soil quality - Determination of total nitrogen - Modified Kjeldahl method
ISO 29541:2025 Coal and coke — Determination of total carbon, hydrogen and nitrogen — Instrumental method
ISO 6851 Photography - Processing waste - Determination of total amino nitrogen (microdiffusion 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

Ente Nazionale Italiano di Unificazione

UNI EN 15750:2009 Fertilizers - Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods
UNI CEN/TS 15478:2006 Fertilizers - Determination of total nitrogen in urea
UNI 9971:1992 Adhesives. Determination of total nitrogen.
UNI EN ISO 14891:2002 Milk and milk products - Determination of nitrogen content - Routine method using combustion according to the Dumas principle
UNI EN 12260:2004 Water quality - Determination of nitrogen - Determination of bound nitrogen (TNb), following oxidation to nitrogen oxides
UNI EN 15561:2009 Fertilizers - Determination of total nitrogen in calcium cyanamide containing nitrates
UNI EN 15104:2011 Solid biofuels - Determination of total content of carbon, hydrogen and nitrogen - Instrumental methods
UNI CEN/TS 15104:2005 Solid biofuels - Determination of total content of carbon, hydrogen and nitrogen - Instrumental methods
UNI 9249:1988 Biomass. Determination of total nitrogen.
UNI EN 15478:2009 Fertilizers - Determination of total nitrogen in urea
UNI EN 16168:2012 Sludge, treated biowaste and soil - Determination of total nitrogen using dry combustion method
UNI CEN/TS 15750:2008 Fertilizers - Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods

Bureau of Philippine Standards

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

PL-PKN

PN C04576 ArkusZ12-1973 Water and waste water Tests for nitrogenDetermination of total nitrogen of Kjeldahl

Lithuanian Standards Office

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 15478-2009 Fertilizers - Determination of total nitrogen in urea

Magyar Szabványügyi Testület

MNOSZ 448-27.lap-1955 Determination of total nitrogen water
MSZ 318/18-1981 Determination of total nitrogen in sludge test

Association of German Mechanical Engineers

VDI 2456-2004 Measurement of gaseous emissions — Reference method for the determination of the sum of nitrogen monoxide and nitrogen dioxide — Ion chromatographic method
VDI 2456-2004 Measurement of gaseous emissions — Reference method for the determination of the sum of nitrogen monoxide and nitrogen dioxide — Ion chromatographic method
VDI 2456 Blatt 2-1973 Gaseous emission measurement; determination of the total sum of nitrogen monoxide and nitrogen dioxide; acidimetric titration method
VDI 2456-2003 Stationary source emissions - Determination of the total of nitrogen monoxide and nitrogen dioxide - Ion chromatography method

RO-ASRO

SR ISO 5315:1984 Fertilizers. Determination of totai nitrogen content.Titrimetric method after distilation

GCC Standardization Organization

GSO ISO 6851:2015 Photography -- Processing waste -- Determination of total amino nitrogen (microdiffusion Kjeldahl method)
GSO ISO 14891:2014 Milk and milk products -- Determination of nitrogen content -- Routine method using combustion according to the Dumas principle

Bureau of Indian Standards

IS 6092-2-5-2004 Methods of Sampling and Test for Fertilizers - Part 2 : Determination of Nitrogen - Section 5 : Total Nitrogen Content - Titrimetric Method after Distillation
IS 18844-2024 Milk and Milk Products - Determination of Nitrogen Content - Routine Method Using Combustion According to the Dumas Principle
IS 3025-73-2021 METHODS OF SAMPLING AND TEST PHYSICAL AND CHEMICAL FOR WATER AND WASTEWATER Part 73 Instrument based method for determination of total organic carbon TOC dissolved organic carbon DOC total bound nitrogen TNb and dissolved bound nitrogen DNb
IS 3708-12-1966 Methods of test for natural rubber latex: Part 12 Determination of volatile fatty acid number, total nitrogen, total copper, total iron, total manganese, total ash
IS 6092-2-7-2004 Methods of Sampling and Test for Fertilizers - Part 2 : Determination of Nitrogen - Section 7 : Solid Fertilizers - Determination of Urea Nitrogen Content - Gravimetric Method Using Xanthydrol
IS 3025-34-4-2022 METHODS OF SAMPLING AND TEST PHYSICAL AND CHEMICAL FOR WATER AND WASTEWATER PART 34 NITROGEN Section 4 Determination of total nitrogen after UV digestion Method using flow analysis CFA and FIA and spectrometric detection

YU-JUS

JUS H.B8.288-1983 Fertilizers. Determination of content total-nitrogen. Volumetric method
JUS H.G8.104-1984 Reagents. Potassium chloride. Determination of total nitrogen content. Colorimetric method
JUS H.G8.343-1988 Reagents. Zine chloride. Determination of total nitrogen content. Colorinetcic metbod
JUS 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

European Committee for Standardization (CEN)

EN 15750:2009 Fertilizers - Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods
EN ISO 14891:2002 Milk and Milk Products - Determination of Nitrogen Content - Routine Method Using Combustion According to the Dumas Principle
EN 15478:2009 Fertilizers - Determination of total nitrogen in urea

International Dairy Federation (IDF)

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

The Directorate General of Specifications and Metrology (DGSM)

OS GSO ISO 14891:2014 Milk and milk products -- Determination of nitrogen content -- Routine method using combustion according to the Dumas principle

Kingdom of Bahrain Testing and Metrology Directorate

BH GSO ISO 14891:2016 Milk and milk products -- Determination of nitrogen content -- Routine method using combustion according to the Dumas principle

PT-IPQ

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

SE-SIS

SIS SS 02 81 86-1985 Determination of total arsenic in water - Silver diethyldithiocarbamate spectrometric method