Total nitrogen determination process

Total nitrogen determination process, Total:231 items.

The international standard classification for "Total nitrogen determination process" includes: Fertilizers , Edible oils and fats. Oilseeds , Chemical reagents , Inorganic chemicals in general , Rubber .

The Chinese standard classification for "Total nitrogen determination process" includes: Soil and fertilizer in general , Basic standards and general methods on chemical fertilizers , Chemical fertilizer and chemical soil conditioner , Basic standards and general methods , Chemical reagent in general , Photographic-grade chemicals , Inorganic chemicals in general , Rubber products in general , Tobacco .

Group Standards of the People's Republic of China

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
T/QAS 071-2021 Determination of total nitrogen in brine Kjeldahl method
T/GXAS 477-2023 Determination of total nitrogen content in sugarcane juice —sulphuric acid titrimetric method

Jilin Provincial Standard of the People's Republic of China

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

Professional Standard - Agriculture

GB 609-1988 General method for the determination of total nitrogen content of chemical reagents
GB/T 609-2018(XG1-2024) Chemical Reagents General Method for Determination of Total Nitrogen
NY/T 2542-2014 Fertilizers. Determination of total nitrogen nitrogen content
HJ 199-2023 Water quality―Determination of total nitrogen ―Gas-phase molecular absorption spectrometry
NY/T 1977-2010 Water-soluble fertilizers--Determination of total nitrogen,phosphorus and potassium content
GB 8572-1988 Determination of total nitrogen content in compound fertilizer
GB 10511-1989 The determination of total nitrogen content for nitrophosphate titrimetric method after distillation
SL/T 788.1-2019 Part 1: Determination of total nitrogen in water quality

General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China

GB/T 609-2006 Chemical Reagent - General Method for the Determination of Total Nitrogen
GB/T 10511-2008 Determination of total nitrogen content for nitrophosphate - Titrimetric method after distillation
GB/T 2441.1-2001 Determination of urea-Determination of total nitrogen content
GB/T 17767.1-1999 Determination of total nitrogen content for organic-inorganic compound fertilizers
GB/T 609-2018 Chemical reagent—General method for the determination of total nitrogen
GB/T 8572-2001 Determination of total nitrogen content for compound fertilizers--Titrimetric method after distillation
GB/T 41965-2022 Photography—Processing waste—Determination of total amino nitrogen (microdiffusion Kjeldahl method)
GB/T 23835.12-2009 Lithium perchlorate anhydrous - Part 12: Determination of total nitrogen content
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 11894-1989 Water quality--Determination of total nitrogen--Alkaline potassium persulfate digestion-UV spectro photometric method
GB/T 2441.1-2008 Determination of urea - Part 1: Total nitrogen content
GB/T 9823-1988 Method for determination of total nitrogen content in oilseed residues

Professional Standard - Environmental Protection

HJ 636-2012 Water quality. Determination of total nitrogen. Alkaline potassium persulfate digestion UV spectrophotometric method

工业和信息化部

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

国家市场监督管理总局、中国国家标准化管理委员会

GB/T 40723-2021 Rubber—Determination the contents of total sulfur and total nitrogen — Automatic analyser 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/T 77-1999 Municipal sewage.Determination of total nitrogen.Distillation and titration method

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

HU-MSZT

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

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 UOP432-65T Total Nitrogen in Liquefied Petroleum Gases by Acid Extraction-Kjeldahl Procedure
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 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 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 D3590-02 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

AT-ON

ONORM L 1095-2002 Chemical analyses of soils - Determination of total nitrogen by dry combustion

YU-JUS

JUS H.G8.055-1983 Reagents. Hydrogen peroxide. Determination of total nitrogen content. Colorimetric method
JUS H.B8.288-1983 Fertilizers. Determination of content total-nitrogen. Volumetric method
JUS H.G8.083-1983 Reagents. Sodium chloride. Determination of total nitrogen content. Colorimetric method
JUS H.G8.435-1990 Reaqents. Potassium iodide. Determination of total nitroaen content. Colorimetric method
JUS H.G8.457-1991 Reagents. Potassium sulpbate. Determination of total nltrogen content. Colorlmetrlc metho?
JUS H.G8.104-1984 Reagents. Potassium chloride. Determination of total nitrogen content. Colorimetric method
JUS H.G8.415-1991 Reagents. So?ium hydroxide. Determination of total nitrogen content. Colorimetric method
JUS E.Z8.016-1993 Soups,broaths,sauces and seasonings - Determination of total nitrogen content
JUS H.G8.290-1987 Reagents. Copper(ll) oxide. Determination of total nitrogen content. Colorimetric method
JUS H.G8.343-1988 Reagents. Zine chloride. Determination of total nitrogen content. Colorinetcic metbod
JUS H.G8.447-1990 Reagents. Zine sulphate heptahydrate. Determination of total nitrogen content. Colorimetric method
JUS H.G8.489-1991 Reagents. Potassium permanganate. Determination of total nitrogen content. Colorimetric method
JUS H.G8.514-1991 Reagents. Potassium hydroxide. Determination of total nitrogen content. Colorimetric method

SCC

NS 4743:1993 Water analysis — Determination of total nitrogen after oxidation by peroxodisulphate
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
DANSK DS/EN 15478:2009 Fertilizers - Determination of total nitrogen in urea
NS-EN 16168:2012 Sludge, treated biowaste and soil — Determination of total nitrogen using dry combustion method
SN-CEN/TS 15478:2006 Fertilizers — Determination of total nitrogen in urea
DANSK DS/EN 16168:2012 Sludge, treated biowaste and soil - Determination of total nitrogen using dry combustion method
NS-EN 15478:2009 Fertilizers — Determination of total nitrogen in urea
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
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
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
NS 4745:1991 Water analysis - Determination of the sum of nitrite nitrogen and nitrate nitrogen
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
DANSK DS/EN 13342:2001 Characterisation of sludges - Determination of total Kjeldahl nitrogen
AENOR UNE-EN ISO 13395:1997 WATER QUALITY. DETERMINATION OF NITRITE NITROGEN AND NITRATE NITROGEN AND THE SUM OF BOTH BY FLOW ANALYSIS (CFA AND FIA) AND SPECTROMETRIC DETECTION. (ISO 13395:1996).
DIN EN 16168 E:2011 Draft Document - Sludge, treated biowaste and soil - Determination of total nitrogen using dry combustion method; German version prEN 16168:2010
08/30179310 DC BS EN 15478. Fertilizers. Determination of total nitrogen in urea
SN-CEN/TS 15560:2007 Fertilizers — Determination of total nitrogen in calcium cyanamide nitrate free
NS-EN 15560:2009 Fertilizers - Determination of total nitrogen in calcium cyanamide nitrate free
AENOR UNE-EN 15560:2009 Fertilizers - Determination of total nitrogen in calcium cyanamide nitrate free
10/30147466 DC BS EN 16168. Sludge, treated biowaste and soil. Determination of total nitrogen using dry combustion method
DANSK DS/EN 15560:2009 Fertilizers – Determination of total nitrogen in calcium cyanamide nitrate free
NS-EN ISO 13395:1996 Water quality — Determination of nitrite nitrogen and nitrate nitrogen and the sum of both by flow analysis (CFA and FIA) and spectrometric detection (ISO 13395:1996)
NS-EN 13716:2001 Surface active agents — Determination of total base nitrogen — Potentiometric titration
NS 4865:1983 Air quality — Determination of the sum of nitrite- and nitrate-nitrogen in precipitation
DANSK DS/EN 13716:2002 Surface active agents - Determination of total base nitrogen - Potentiometric titration
NS-EN 15560:2023 Inorganic fertilizers - Determination of total nitrogen in calcium cyanamide nitrate free

NO-SN

NS 4743-1993 Water analysis. Determination of total nitrogen after oxidation with peroxodisulphate
NS 4745-1991 Water analysis - Determination of the sum of nitrite nitrogen and nitrate nitrogen

RO-ASRO

STAS 9029-1986 DRESSED LEATHERS Determination of total nitrogen and hide snbstance
STAS SR 4895-5-1997 Tobacco and tobacco products. Determination of total nitrogen content
SR ISO 5315:1984 Fertilizers. Determination of totai nitrogen content.Titrimetric method after distilation

Association Francaise de Normalisation

NF V04-211:1971 MILK. DETERMINATION OF TOTAL NITROGEN CONTENT. (KJELDAHL METHOD).
NF ISO 13878:1998 Soil quality - Determination of total nitrogen content by dry combustion ("elemental analysis")
NF U42-147*NF EN 15561:2009 Fertilizers - Determination of total nitrogen in calcium cyanamide containing nitrate
NF EN ISO 13395:1996 Water quality - Determination of nitrous nitrogen and nitrate nitrogen and the sum of both by flow analysis (CFA and FIA) and spectrometric detection
NF EN 15478:2009 Fertilizers - Determination of total nitrogen in urea
NF X31-111*NF ISO 11261:1995 Soil quality. Determination of total nitrogen. Modified kjeldahl method.
NF EN 16168:2012 Sludge, treated biowaste and soil - Determination of total nitrogen content by dry combustion
NF U42-416*NF EN 15478:2009 Fertilizers - Determination of total nitrogen in urea.
NF A06-555:2010 Steel - Determination of nitrogen content - Spectrophotometric method.
NF U42-151:1984 Fertilizers. Determination of total nitrogen content. Titrimetric method after distillation.
NF ISO 20620:2022 Fertilizers and amendments - Determination of total nitrogen by combustion
NF EN 15561:2009 Fertilizers - Determination of total nitrogen in nitrated calcium cyanamide
NF X34-117*NF EN ISO 16948:2015 Solid biofuels - Determination of total content of carbon, hydrogen and nitrogen
NF U42-504*NF ISO 20620:2022 Fertilizers and soil conditioners - Determination of total nitrogen by combustion
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 13716:2002 Surfactants - Determination of total basic nitrogen content - Potentiometric titration
NF T73-282*NF EN 13716:2002 Surface active agents - Determination of total base nitrogen - Potentiometric titration.
NF EN 15560:2009 Fertilizers - Determination of total nitrogen in nitrate-free calcium cyanamide
NF EN ISO 16948:2015 Solid biofuels - Determination of total carbon, hydrogen and nitrogen content

PL-PKN

PN C04576 ArkusZ12-1973 Water and waste water Tests for nitrogenDetermination of total nitrogen of Kjeldahl
PN C04576 ArkusZ14-1973 Water and w?sie water Tes?s for nitrogen Calcula?ion of to?al nitrogen

VN-TCVN

TCVN 6498-1999 Soil quality.Determination of total nitrogen.Modifierd Kejldahl method
TCVN 5265-1990 Bee products.Determination of total nitrogen content
TCVN 7252-2003 Tobacco and tobacco products.Determination of total nitrogen content
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")

CZ-CSN

CSN 68 4124-1980 Determination of small mounts of total nitrogen
CSN 65 0331-1963 Deterimination oí Nierogea by Kjeldahl's method
CSN 65 4836-1983 Minerál fertilizers Methode for determination of total nitrogen content

Association of Official Analytical Chemists (AOAC)

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

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(2018) 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 13395-2018 Water quality－Determination of nitrite nitrogen and nitrate nitrogen and the sum of both by flow analysis (CFA and FIA) and spectrometric detection
KS M ISO 5315-2007(2012) 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 H ISO 1871-2013(2018) Agricultural food products ― General directions for the determination of nitrogen by the Kjeldahl method
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 6851-2022 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 M ISO 4652-2014(2019) Rubber compounding ingredients — Carbon black — Determination of specific surface area by nitrogen adsorption methods — Single-point procedures
KS M ISO 16948:2021 Solid biofuels — Determination of total content of carbon, hydrogen and nitrogen

RU-GOST R

GOST 26715-1985 Organic fertilizers. Methods for determination of total nitrogen
GOST EN 15478-2013 Fertilizers. Determination of total nitrogen in urea
GOST 10671.4-2016 Reagents. Methods for determination of total nitrogen impurity
GOST EN 15750-2016 Fertilizers. Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods

GOSTR

GOST R 58596-2019 Soils. Methods for determination of total nitrogen

Spanish Association for Standardization (UNE)

UNE 77325:2003 Soil quality. Determination of total nitrogen content by dry combustion ("elemental analysis").
UNE 77318:2001 Soil quality. Determination of total nitrogen. Modified Kjeldahl method.
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-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-CEN/TS 15560:2007 EX Fertilizers - Determination of total nitrogen in calcium cyanamide nitrate free
UNE-EN ISO 13395:1997 WATER QUALITY. DETERMINATION OF NITRITE NITROGEN AND NITRATE NITROGEN AND THE SUM OF BOTH BY FLOW ANALYSIS (CFA AND FIA) AND SPECTROMETRIC DETECTION. (ISO 13395:1996).
UNE-EN 15560:2024 Inorganic fertilizers - Determination of total nitrogen in calcium cyanamide nitrate free
UNE 34080:1974 ANALYSIS METHODS FOR CHOCOLATES. DETERMINATION OF TOTAL NITROGEN. (PROTEINS).
UNE-EN ISO 16948:2015 Solid biofuels - Determination of total content of carbon, hydrogen and nitrogen (ISO 16948:2015)

International Organization for Standardization (ISO)

ISO 11261:1995 Soil quality - Determination of total nitrogen - Modified Kjeldahl method
ISO 3099:1974 Oilseed residues — Determination of total nitrogen content
ISO 5315:1984 Fertilizers; Determination of total nitrogen content; Titrimetric method after distillation
ISO 20620:2021 Fertilizers and soil conditioners - Determination of total nitrogen by combustion
ISO 4652:2020 Rubber compounding ingredients — Carbon black — Determination of specific surface area by nitrogen adsorption methods — Single-point procedures
ISO 29541:2010 Solid mineral fuels - Determination of total carbon, hydrogen and nitrogen content - Instrumental method
ISO 3331:1975 Ammonium nitrate for industrial use — Determination of total nitrogen content — Titrimetric method after distillation
ISO 16948:2015 Solid biofuels - Determination of total content of carbon, hydrogen and nitrogen

Indonesia Standards

SNI 4146-2013 Method for determination of total nitrogen content in sediment by Kjeldahl titration method
SNI 13-4721-1998 Methods for determination of total nitrogen content in soils
SNI 06-6323-2000 Determination of total nitrogen content in peat

CEN - European Committee for Standardization

PD CEN/TS 15478:2006 Fertilizers - Determination of total nitrogen in urea
PD CEN/TS 15560:2007 Fertilizers - Determination of total nitrogen in calcium cyanamide nitrate free

British Standards Institution (BSI)

BS EN 15478:2009 Fertilizers - Determination of total nitrogen in urea
BS EN ISO 13395:1996(1998) Water quality — Determination of nitrite nitrogen and nitrate nitrogen and the sum of both by flow analysis (CFA and FIA) and spectrometric detection
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 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 4267-2:1988 Ammonium nitrate - Method for determination of total nitrogen content
BS ISO 20620:2021 Fertilizers and soil conditioners. Determination of total nitrogen by combustion
BS EN 13716:2002 Surface active agents - Determination of total base nitrogen - Potentiometric titration
DD CEN/TS 15560:2007 Fertilizers. Determination of total nitrogen in calcium cyanamide nitrate free
BS EN ISO 16948:2015 Solid biofuels. Determination of total content of carbon, hydrogen and nitrogen
BS EN 15560:2023 Inorganic fertilizers — Determination of total nitrogen in calcium cyanamide nitrate free
BS 4267-2:1988(1999) Ammonium nitrate — Part 2 : Method for determination of total nitrogen content

German Institute for Standardization

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 16168:2012-11 Sludge, treated biowaste and soil - Determination of total nitrogen using dry combustion method; German version EN 16168:2012
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 Testing of solid mineral fuels - Determination of total carbon, hydrogen and nitrogen - Instrumental methods
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 ISO 11905-1:1998 Water quality - Determination of nitrogen - Part 1: Method using oxidative digestion with peroxodisulfate (ISO 11905-1:1997); German version EN ISO 11905-1:1998
DIN EN ISO 13395:1996-12 Water quality - Determination of nitrite nitrogen and nitrate nitrogen and the sum of both by flow analysis (CFA and FIA) and spectrometric detection (ISO 13395:1996); German version EN ISO 13395:1996
DIN EN 13716:2003-05 Surface active agents - Determination of total base nitrogen - Potentiometric titration; German version EN 13716:2001
DIN CEN/TS 15750:2008 Fertilizers - Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods; German version CEN/TS 15750:2008
DIN EN 13716:2003 Surface active agents - Determination of total base nitrogen - Potentiometric titration; German version EN 13716:2001
DIN EN 15560:2009 Fertilizers - Determination of total nitrogen in calcium cyanamide nitrate free; English version of DIN EN 15560:2009-06
DIN ISO 11261:1997 Soil quality - Determination of total nitrogen - Modified Kjeldahl method (ISO 11261:1995)
DIN EN ISO 16948:2015-09 Solid biofuels - Determination of total content of carbon, hydrogen and nitrogen (ISO 16948:2015); German version EN ISO 16948:2015

Lithuanian Standards Office

LST EN 15478-2009 Fertilizers - Determination of total nitrogen in urea
LST EN 16168-2012 Sludge, treated biowaste and soil - Determination of total nitrogen using dry combustion method
LST EN ISO 13395:2000 Water quality - Determination of nitrite nitrogen and nitrate nitrogen and the sum of both by flow analysis (CFA and FIA) and spectrometric detection (ISO 13395:1996)
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 13716-2002 Surface active agents - Determination of total base nitrogen - Potentiometric titration
LST EN 15560-2009 Fertilizers - Determination of total nitrogen in calcium cyanamide nitrate free

Danish Standards Foundation

DS 223:1991 Water analysis. Determination of the sum of nitrite- and nitrate-nitrogen
DS/EN 15478:2009 Fertilizers - Determination of total nitrogen in urea
DS/EN ISO 13395:1997 Water quality - Determination of nitrite nitrogen and nitrate nitrogen and the sum of both by flow analysis (CFA and FIA) and spectrometric detection
DS/EN 13342:2001 Characterisation of sludges - Determination of total Kjeldahl nitrogen
DS/EN 16168:2013 Sludge, treated biowaste and soil - Determination of total nitrogen using dry combustion method
DS/EN 15750:2010 Fertilizers - Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods
DS/EN 13716:2002 Surface active agents - Determination of total base nitrogen - Potentiometric titration
DS/ISO 1871:2009 Food and feed products - General guidelines for the determination of nitrogen by the Kjeldahl method
DS/EN 15560:2009 Fertilizers - Determination of total nitrogen in calcium cyanamide nitrate free

European Committee for Standardization (CEN)

EN 15478:2009 Fertilizers - Determination of total nitrogen in urea
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 13716:2001 Surface active agents - Determination of total base nitrogen - Potentiometric titration
EN 15560:2023 Inorganic fertilizers - Determination of total nitrogen in calcium cyanamide nitrate free

GSO

OS GSO ISO 13395:2013 Water quality -- Determination of nitrite nitrogen and nitrate nitrogen and the sum of both by flow analysis (CFA and FIA) and spectrometric detection
GSO ISO 6851:2015 Photography -- Processing waste -- Determination of total amino nitrogen (microdiffusion Kjeldahl method)

GOST

GOST 34789-2021 Brewing products. Identification. Determination of mass concentration of total nitrogen by Kjeldahl method

Standard Association of Australia （SAA）

AS 1871.11:1976 List of methods for examination of waters Nitrogen (total Kjeldahl incl. ammoniacal)

TR-TSE

TS 974-1971 DETERMINATION OF NITROGEN, TOTAL SULPHUR CHLORINE AND PHOSPHORUS ?N COKE

SE-SIS

SIS SS IEC 534-1:1983 Industrial-process measurement and control — Industrial-process control valves — General considerations
SIS SS 02 81 86-1985 Determination of total arsenic in water - Silver diethyldithiocarbamate spectrometric method

VDI - Verein Deutscher Ingenieure

VDI 2456 Blatt 2-1973 Gaseous emission measurement; determination of the total sum of nitrogen monoxide and nitrogen dioxide; acidimetric titration method
VDI 2456 Blatt 6-1978 Gaseous emission measurement; determination of the sum of nitrogen monoxide and nitrogen dioxide as nitrogen monoxide by use of a converter
VDI 2456-2003 Stationary source emissions - Determination of the total of nitrogen monoxide and nitrogen dioxide - Ion chromatography method
VDI 2456 Blatt 1-1973 Gaseous emission measurement; determination of the total sum of nitrogen monoxide and nitrogen dioxide; phenoldisulfonic acid method
VDI 2456 Blatt 10-1990 Gaseous emission measurement; analytical determination of the sum of nitrogen monoxide and nitrogen dioxide; dimethylphenol method

NL-NEN

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

PT-IPQ

NP 3646-1987 fertilizer. Measurement of total nitrogen content

Universal Oil Products Company (UOP)

UOP 269-2010 Nitrogen Bases in Hydrocarbons by Titration

US-FCR

FCR COE ETL 1110-2-253-1980 MEASUREMENT OF DISSOLVED GASES TO DETERMINE THE DEGREE OF NITROGEN SUPERSATURATION

KR-KS

KS M ISO 16948-2021 Solid biofuels — Determination of total content of carbon, hydrogen and nitrogen