total nitrogen and total nitrogen

total nitrogen and total nitrogen, Total:341 items.

The international standard classification for "total nitrogen and total nitrogen" includes: Fertilizers , Laboratory ware and related apparatus , food products in general , Edible oils and fats. Oilseeds , Forging equipment. Presses. Shears , Chemical reagents , Meat and meat products , Ferroalloys , Chemical elements , Gases for industrial application , Soil quality and pedology in general , Ground service and maintenance equipment , Water quality , Rubber , Heat-treatable steels , Chemical laboratories. Laboratory equipment , Heat treatment and coating , Aluminium and aluminium alloys , Surface active agents , Mining and quarrying .

The Chinese standard classification for "total nitrogen and total nitrogen" includes: Soil and fertilizer in general , Industrial gas and chemical gas , Photographic-grade chemicals , Basic standards and general methods , Mould , Chemical reagent in general , Meat processing and products , Chemical fertilizer and chemical soil conditioner , Steel and iron alloy analysis method , Basic standards and general methods on chemical fertilizers , Aerospace ground equipment in general , Water supply and draining instrument and equipment , Analysis methods for toxic substances in water , Rubber products in general , Steel and iron products in general , Electrochemical, thermochemistry and optical profile type analyzer , Beneficiation reagent , Tobacco , Heat treatment .

Group Standards of the People's Republic of China

T/QAS 071-2021 Determination of total nitrogen in brine Kjeldahl method
T/NAIA 044-2021 Urine Total Nitrogen Determination in Livestock Kjeldahl 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)

Military Standard of the People's Republic of China-General Armament Department

GJB 2253A-2008 Safe application rules for gaseous nitrogen and liquid nitrogen
GJB 2252A-2008 Safe application rules for nitrogen tetroxide
GJB 3403-1998 Nitrogen and Liquid Nitrogen Specifications
GJB 2253-1994 Guidelines for safe use of nitrogen and liquid nitrogen
GJB 2252-1994 Guidelines for safe application of dinitrogen tetroxide

National Metrological Verification Regulations of the People's Republic of China

JJG 1094-2013 Water Quality On-line Analyzers of Total Phosphorus and Total Nitrogen

Professional Standard - Agriculture

NY/T 1121.24-2012 Soil Testing - Part 24: Determination of Total Nitrogen in Soil - Automatic Kjeldahl Apparatus Method
NY/T 1977-2010 Water-soluble fertilizers--Determination of total nitrogen,phosphorus and potassium content
NY/T 2419-2013 Determination of total nitrogen in plant - Automatic kjeldahl apparatus method
GB/T 609-2018(XG1-2024) Chemical Reagents General Method for Determination of Total Nitrogen
ZB X 66026-1987 Total Nitrogen and Crude Protein Determination
SL/T 788.1-2019 Part 1: Determination of total nitrogen in water quality
GB 8572-1988 Determination of total nitrogen content in compound fertilizer
GB 609-1988 General method for the determination of total nitrogen content of chemical reagents
NY/T 297-1995 Determination of Total Nitrogen in Organic Fertilizers
NY/T 1116-2014 Fertilizer - Determination for content of nitrate nitrogen, ammonium nitrogen and amidonitrogen
NY/T 2542-2014 Fertilizers. Determination of total nitrogen nitrogen content

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

GB/T 6625-1986 Test methods for nitrogen content of nitrogen-doped getter
GB/T 8979-1996 Pure nitrogen
GB/T 8979-2008 Pure nitrogen and high purity nitrogen and ultra pure nitrogen
GB/T 5687.4-2016 Nitrogen-bearing ferrochromium and nitride ferrochrome with high nitrogen content—Determination of nitrogen content—The distillation-neutralization titration method
GB/T 9695.11-1988 Meat and meat products--Method for determination of nitrogen content
GB/T 9823-1988 Method for determination of total nitrogen content in oilseed residues
GB/T 609-1988 Chemical reagent-General method for the determination of total nitrogen
GB/T 2441.1-2008 Determination of urea - Part 1: Total nitrogen content
GB/T 2441.1-2001 Determination of urea-Determination of total nitrogen content
GB/T 609-2018 Chemical reagent—General method for the determination of total nitrogen
GB/T 42490-2023 Soil quality—Determination of total content and isotope ratio of organic carbon and nitrogen of soil and biological samples—Stable isotope ratio mass spectrometry
GB/T 20914.5-2023 Tools for pressing—Gas springs—Part 5: Safety instructions for gas springs
GB/T 609-2006 Chemical Reagent - General Method for the Determination of Total Nitrogen
GB/T 41965-2022 Photography—Processing waste—Determination of total amino nitrogen (microdiffusion Kjeldahl method)
GB/T 3864-2008 Industrial Nitrogen
GB/T 3864-1996 Industrial nitrogen
GB/T 9695.11-2008 Meat and meat products - Determination of nitrogen content
GB/T 8980-1996 High purity nitrogen

Jiangsu Provincial Standard of the People's Republic of China

DB32/T 4541-2023 Sea water quality evaluation guide for total nitrogen and total phosphorus

Heilongjiang Provincial Standard of the People's Republic of China

DB23/T 3310-2022 Water quality total nitrogen monitoring technical specification

工业和信息化部

YB/T 4528-2016 Nitrogen-bearing ferrochromium and nitride ferrochrome with high nitrogen content. Determination of nitrogen contenr. Thermal conductimetric method after fusion in a current of inert gas
YB/T 4582.7-2017 Ferrosilicon nitride-Determination of total nitrogen content-Neutralization titration method
HG/T 5669-2019 Textile dyeing and finishing auxiliaries- Determination of total nitrogen

Taiwan Provincial Standard of the People's Republic of China

CNS 3944-1976 Method for Determination of Total Kjeloahl Nitrogen in Polluted and Waste Water
CNS 12590-1989 Method of Test for Organic Nitrogen in Paper and Paperboard

Professional Standard - Aviation

HB 5022-2023 Grading and Evaluating for nitriding and nitrocarburizing structure of aircraft Steel Parts

Liaoning Provincial Standard of the People's Republic of China

DB21/T 616-1991 Plant total nitrogen determination method

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

GJB 3403A-2019 Specification for gaseous nitrogen and liquid nitrogen

Professional Standard - Forestry

LY/T 1228-1999 Determination of total nitrogen in forest soil
LY/T 1269-1999 Determination of total nitrogen in forest plant and forest floor

Professional Standard - Aerospace

QJ 3225-2005 General specification for making and charging nitrogen equipment
QJ 2298-1992修改单 Safety technical specification for nitrogen

Professional Standard - Environmental Protection

HJ/T 199-2005 Water quality -- Determination of total-nitrogen Gas-phase molecular absorption spectrometry
HJ/T 102-2003 The technical requirement for water quality automatic ananlyzer of total nitrogen

Hebei Provincial Standard of the People's Republic of China

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

国家市场监督管理总局、中国国家标准化管理委员会

GB/T 37618-2019 Nitriding steels
GB/T 40723-2021 Rubber—Determination the contents of total sulfur and total nitrogen — Automatic analyser 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

GB/T 34889-2017 Carburizing or carbonitriding，quenching and tempering of steel parts
GB/T 33862-2017 Automatic(semi) Kjeldahl analyzer

Professional Standard - Non-ferrous Metal

YS/T 270-1994 Ethyl thio carbamate
YS/T 270-2011 Ethyl thio carbamate
YS/T 671-2008 Dibutyl Dithiocarbamate

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

Professional Standard - Machinery

JB/T 3999-2007 Carburizing or carbonitriding, post-quenching and tempering of steel part

SCC

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
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
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
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
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
NS 4745:1991 Water analysis - Determination of the sum of nitrite nitrogen and nitrate nitrogen
DANSK DS/EN 15478:2009 Fertilizers - Determination of total nitrogen in urea
SN-CEN/TS 15478:2006 Fertilizers — Determination of total nitrogen in urea
NS-EN 15478:2009 Fertilizers — Determination of total nitrogen in urea
NS 4865:1983 Air quality — Determination of the sum of nitrite- and nitrate-nitrogen in precipitation
08/30179332 DC BS EN 15604. Fertilizers. Determination of different forms of nitrogen in the same sample, containing nitrogen as nitric, ammoniacal, urea and cyanamide nitrogen
SN-CEN/TS 15604:2007 Fertilizers — Determination of different forms of nitrogen in the same sample, containing nitrogen as nitric, ammoniacal, urea and cyanamide nitrogen
DANSK DS/ISO 15604:2020 Fertilizers – Determination of different forms of nitrogen in the same sample, containing nitrogen as nitric, ammoniacal, urea and cyanamide nitrogen
DANSK DS/EN 15604:2009 Fertilizers - Determination of different forms of nitrogen in the same sample, containing nitrogen as nitric, ammoniacal, urea and cyanamide nitrogen
NS-EN 15604:2009 Fertilizers — Determination of different forms of nitrogen in the same sample, containing nitrogen as nitric, ammoniacal, urea and cyanamide nitrogen
AWWA ACE95050 The Persistence of the Nitrogen Effect or The Performance of Glass Versus Ceramic Dielectrics With Nitrogen in Ozone Production
BS DD CEN/TS 15750:2006 Fertilizers. Determination of different forms of nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods
DIN EN ISO 15604 E:2019 Draft Document - Fertilizers - Determination of different forms of nitrogen in the same sample, containing nitrogen as nitric, ammoniacal, urea and cyanamide nitrogen (ISO 15604:2016); German and English version prEN ISO 15604:2019
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
AENOR UNE-EN 15560:2009 Fertilizers - Determination of total nitrogen in calcium cyanamide nitrate free
NS-EN 15560:2009 Fertilizers - Determination of total nitrogen in calcium cyanamide nitrate free
DANSK DS/EN 15560:2009 Fertilizers – Determination of total nitrogen in calcium cyanamide nitrate free
VDI 2456-2004 Measurement of gaseous emissions — Reference method for the determination of the sum of nitrogen monoxide and nitrogen dioxide — Ion chromatographic method
DANSK DS/EN 12260:2003 Water quality – Determination of nitrogen – Determination of bound nitrogen (TNb), following oxidation to nitrogen oxides
NS-EN 12260:2003 Water quality — Determination of nitrogen — Determination of bound nitrogen (TNb), following oxidation to nitrogen oxides
DANSK DS/EN 13342:2001 Characterisation of sludges - Determination of total Kjeldahl nitrogen
VDI 2456-2004 Measurement of gaseous emissions — Reference method for the determination of the sum of nitrogen monoxide and nitrogen dioxide — Ion chromatographic method
DANSK DS/ISO 20236:2018 Water quality – Determination of total organic carbon (TOC), dissolved organic carbon (DOC), total bound nitrogen (TNb) and dissolved bound nitrogen (DNb) after high temperature catalytic oxidative combustion
BS EN ISO 8968-1:2002 Milk. Determination of nitrogen content-Kjeldahl method
NS 4743:1993 Water analysis — Determination of total nitrogen after oxidation by peroxodisulphate
AENOR UNE-EN 15476:2009 Fertilizers - Determination of nitric and ammoniacal nitrogen according to Devarda
NS-EN 15560:2023 Inorganic fertilizers - Determination of total nitrogen in calcium cyanamide nitrate free
NS-EN 15476:2009 Fertilizers — Determination of nitric and ammoniacal nitrogen according to Devarda

HU-MSZT

MNOSZ 448-27.lap-1955 Determination of total nitrogen water
MSZ 318/18-1981 Determination of total nitrogen in sludge test
MSZ 21 118-1980 Nitrogen
MNOSZ 260-12.lap-1955 Experiments to detect sewage nitrogen and organic nitrogen
MSZ 89-1981 Nitrogen, liquid
MSZ 21853/10-1979 Definition and Periodic Methods for Air Pollution Detection of Nitric Oxide and Nitrogen Dioxide Emission Bands

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 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 15478:2009 Fertilizers - Determination of total nitrogen in urea; English version of DIN EN 15478:2009-04
DIN EN 15478:2009-04 Fertilizers - Determination of total nitrogen in urea; German version EN 15478:2009
DIN EN 15604:2009-06 Fertilizers - Determination of different forms of nitrogen in the same sample, containing nitrogen as nitric, ammoniacal, urea and cyanamide nitrogen; German version EN 15604:2009 / Note: To be replaced by DIN EN ISO 15604 (2019-06).
DIN ISO 14255:1998-11 Soil quality - Determination of nitrate nitrogen, ammonium nitrogen and total soluble nitrogen in air-dry soils using calcium chloride solution as extractant (ISO 14255:1998)
DIN ISO 14255:1998 Soil quality - Determination of nitrate nitrogen, ammonium nitrogen and total soluble nitrogen in air-dry soils using calcium chloride solution as extractant (ISO 14255:1998)
DIN CEN/TS 15604:2008 Fertilizers - Determination of different forms of nitrogen in the same sample, containing nitrogen as nitric, ammoniacal, urea and cyanamide nitrogen; German version CEN/TS 15604:2007
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 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 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 15559:2009-06 Fertilizers - Determination of nitric and ammoniacal nitrogen according to Arnd; German version EN 15559:2009
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
DIN EN 15558:2009 Fertilizers - Determination of nitric and ammoniacal nitrogen according to Ulsch; English version of DIN EN 15558:2009-06

Association Francaise de Normalisation

NF V04-211:1971 MILK. DETERMINATION OF TOTAL NITROGEN CONTENT. (KJELDAHL METHOD).
NF U42-147*NF EN 15561:2009 Fertilizers - Determination of total nitrogen in calcium cyanamide containing nitrate
NF U42-503*NF EN 15750:2010 Fertilizers - Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods
NF X31-111*NF ISO 11261:1995 Soil quality. Determination of total nitrogen. Modified kjeldahl method.
NF EN 15478:2009 Fertilizers - Determination of total nitrogen in urea
NF ISO 11261:1995 Soil quality - Total nitrogen dosage - Modified Kjeldahl method
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 U42-149*NF EN 15604:2009 Fertilizers - Determination of different forms of nitrogen in the same sample, containing nitrogen as nitric, ammoniacal, urea and cyanamide nitrogen
NF U42-416*NF EN 15478:2009 Fertilizers - Determination of total nitrogen in urea.
NF U42-191:2019 Fertilizers - Nitrogenous fertilizers containing synthetic organic nitrogen - Determination of the types of nitrogen
NF ISO 20620:2022 Fertilizers and amendments - Determination of total nitrogen by combustion
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 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 T90-060:2004 Water quality - Determination of nitrogen - Determination of bound nitrogen (TN sub b), following oxidation to nitrogen oxides.
NF U42-504*NF ISO 20620:2022 Fertilizers and soil conditioners - Determination of total nitrogen by combustion
NF EN ISO 20236:2021 Water quality - Determination of total organic carbon (TOC), dissolved organic carbon (COD), total bound nitrogen (TNb) and dissolved bound nitrogen (DNb) after catalytic oxidative combustion at high temperature
NF T90-236*NF EN ISO 20236:2021 Water quality - Determination of total organic carbon (TOC), dissolved organic carbon (DOC), total bound nitrogen (TNb) and dissolved bound nitrogen (DNb) after high temperature catalytic oxidative combustion
NF U42-144*NF EN 15558:2009 Fertilizers - Determination of nitric and ammoniacal nitrogen according to Ulsch
NF U42-145*NF EN 15559:2009 Fertilizers - Determination of nitric and ammoniacal nitrogen according to Arnd
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 U42-119:1965 Products used in agriculture. Determination of nitrogen content in class C nitrogenous fertilizers.
NF U42-117:1965 Products used in agriculture. Fertilizers. Determination of nitrogen content in class a nitrogenous fertilizers.
NF EN 12135:1997 Fruit and vegetable juices - Nitrogen dosage - Kjeldahl method

PL-PKN

PN C04576 ArkusZ14-1973 Water and w?sie water Tes?s for nitrogen Calcula?ion of to?al nitrogen
PN C04576 ArkusZ12-1973 Water and waste water Tests for nitrogenDetermination of total nitrogen of Kjeldahl
PN Z04092-05-1990 Air purity protection Tests for nitric acid and nitrogen oxides Determination of nitrogen oxide, dioxide and total nitrogen oxides in waste gases (emission)
PN C04576 ArkusZ11-1973 Water and waste water Tests for nitrogen Determination of organie nitrogen
PN C04576 ArkusZ13-1973 Water and waste water Tests for nilrogen Determination of albuminous nitrogen

Spanish Association for Standardization (UNE)

UNE-EN 15750:2010 Fertilizers - Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods
UNE 77318:2001 Soil quality. Determination of total nitrogen. Modified Kjeldahl method.
UNE-EN 15604:2009 Fertilizers - Determination of different forms of nitrogen in the same sample, containing nitrogen as nitric, ammoniacal, urea and cyanamide nitrogen
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-CEN/TS 15604:2008 EX Fertilizers - Determination of different forms of nitrogen in the same sample, containing nitrogen as nitric, ammoniacal, urea and cyanamide nitrogen
UNE 77306:1999 SOIL QUALITY. DETERMINATION OF NITRATE NITROGEN, AMMONIUM NITROGEN AND TOTAL SOLUBLE NITROGEN IN AIR-DRY SOIL USING CALCIUM CHLORIDE SOLUTION AS EXTRACTANT.
UNE-EN 15476:2009 Fertilizers - Determination of nitric and ammoniacal nitrogen according to Devarda
UNE-CEN/TS 15560:2007 EX Fertilizers - Determination of total nitrogen in calcium cyanamide nitrate free
UNE-EN 15558:2009 Fertilizers - Determination of nitric and ammoniacal nitrogen according to Ulsch
UNE-EN ISO 20236:2022 Water quality - Determination of total organic carbon (TOC), dissolved organic carbon (DOC), total bound nitrogen (TNb) and dissolved bound nitrogen (DNb) after high temperature catalytic oxidative combustion (ISO 20236:2018)
UNE-EN 12260:2004 Water quality - Determination of nitrogen - Determination of bound nitrogen (TNb), following oxidation to nitrogen oxides
UNE 31 207 Lead nitride
UNE-EN 13716:2002 Surface active agents - Determination of total base nitrogen - Potentiometric titration.

Compressed Gas Association (U.S.)

CGA SB-6-2014 Nitrous oxide security and control

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 15478-2009 Fertilizers - Determination of total nitrogen in urea
LST EN 15604-2009 Fertilizers - Determination of different forms of nitrogen in the same sample, containing nitrogen as nitric, ammoniacal, urea and cyanamide nitrogen
LST EN 15476-2009 Fertilizers - Determination of nitric and ammoniacal nitrogen according to Devarda
LST EN 12260-2004 Water quality - Determination of nitrogen - Determination of bound nitrogen (TNb), following oxidation to nitrogen oxides
LST EN 15558-2009 Fertilizers - Determination of nitric and ammoniacal nitrogen according to Ulsch

Danish Standards Foundation

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 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 15604:2009 Fertilizers - Determination of different forms of nitrogen in the same sample, containing nitrogen as nitric, ammoniacal, urea and cyanamide nitrogen
DS/EN 13342:2001 Characterisation of sludges - Determination of total Kjeldahl nitrogen
DS/EN 15476:2009 Fertilizers - Determination of nitric and ammoniacal nitrogen according to Devarda
DS/EN 12260:2004 Water quality - Determination of nitrogen - Determination of bound nitrogen (TNb), following oxidation to nitrogen oxides
DS/EN 15558:2009 Fertilizers - Determination of nitric and ammoniacal nitrogen according to Ulsch
DS/EN 13716:2002 Surface active agents - Determination of total base nitrogen - Potentiometric titration

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 6643-2000 Soil quality.Determination of nitrate nitrogen, ammonium nitrogen and total soluble nitrogen in air-dry soils using calcium chloride solution as extractant
TCVN 7252-2003 Tobacco and tobacco products.Determination of total nitrogen content
TCVN 3286-1979 Nitrogen technical
TCVN 7373-2004 Soils quality.Index values of total nitrogen content in the soils of Vietnam
TCVN 6645-2000 Soil quality.Determination of total nitrogen content by dry combustion ("elemental analysis")

American Society for Testing and Materials (ASTM)

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 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 D2973-71(1998) Standard Test Method for Total Nitrogen in Peat Materials
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 D3228-22 Standard Test Method for Total Nitrogen in Lubricating Oils and Fuel Oils by Modified Kjeldahl Method
ASTM D2973-16 Standard Test Method for Total Nitrogen in Peat Materials
ASTM D2973-10e1 Standard Test Method for Total Nitrogen in Peat Materials
ASTM E258-67(2002) Standard Test Method for Total Nitrogen in Organic Materials by Modified Kjeldahl Method
ASTM D2973-10 Standard Test Method for Total Nitrogen in Peat Materials
ASTM D2973-71(2004) Standard Test Method for Total Nitrogen in Peat Materials
ASTM D2973-22 Standard Test Method for Total Nitrogen in Peat Materials
ASTM D2973-23 Standard Test Method for Total Nitrogen in Peat Materials
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 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 D3590-02(2006) Standard Test Methods for Total Kjeldahl Nitrogen in Water

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

British Standards Institution (BSI)

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 7755-3.7:1995 Soil quality. Chemical methods. Determination of total nitrogen. Modified Kjeldahl method
BS EN 15478:2009 Fertilizers - Determination of total nitrogen in urea
BS ISO 6851:2001 Photography. Processing waste. Determination of total amino nitrogen (microdiffusion Kjeldahl method)
BS 5551-4.1.3:1986 Fertilizers. Chemical analysis. Determination of nitrogen. Method for determination of total nitrogen content (titrimetric method after distillation)
BS DD CEN/TS 15604:2007 Fertilizers - Determination of different forms of nitrogen in the same sample, containing nitrogen as nitric, ammoniacal, urea and cyanamide nitrogen
14/30313910 DC BS ISO 15604. Fertilizers. Determination of different forms of nitrogen in the same sample, containing nitrogen as nitric, ammoniacal, urea and cyanamide nitrogen
BS EN 15604:2009 Fertilizers - Determination of different forms of nitrogen in the same sample, containing nitrogen as nitric, ammoniacal, urea and cyanamide nitrogen
DD CEN/TS 15604:2007 Fertilizers — Determination of different forms of nitrogen in the same sample, containing nitrogen as nitric, ammoniacal, urea and cyanamide nitrogen
BS EN 12260:2003(2008)*BS 6068-2.83:2003 Water quality - Determination of nitrogen - Determination of bound nitrogen (TNb), following oxidation to nitrogen oxides
BS EN ISO 20236:2021 Water quality. Determination of total organic carbon (TOC), dissolved organic carbon (DOC), total bound nitrogen (TN _b ) and dissolved bound nitrogen (DN _b ) after high temperature catalytic oxidative combustion
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 ISO 20236:2021(2022) Water quality — Determination of total organic carbon (TOC), dissolved organic carbon (DOC), total bound nitrogen (TNb) and dissolved bound nitrogen (DNb) after high temperature catalytic oxidative combustion
BS EN 12260-2003(2008)*BS 6068-2.83:2003 Water quality — Determination of nitrogen — Determination of bound nitrogen (TNb), following oxidation to nitrogen oxides
BS DD CEN/TS 15558:2007 Fertilizers - Determination of nitric and ammoniacal nitrogen according to Ulsch

European Committee for Standardization (CEN)

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 15478:2009 Fertilizers - Determination of total nitrogen in urea
EN 15604:2009 Fertilizers - Determination of different forms of nitrogen in the same sample, containing nitrogen as nitric, ammoniacal, urea and cyanamide nitrogen
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 20236:2021 Water quality - Determination of total organic carbon (TOC), dissolved organic carbon (DOC), total bound nitrogen (TNb) and dissolved bound nitrogen (DNb) after high temperature catalytic oxidative combustion (ISO 20236:2018)
EN 15560:2023 Inorganic fertilizers - Determination of total nitrogen in calcium cyanamide nitrate free

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 M ISO 6851-2002(2017) Photography－Processing waste－Determination of total amino nitrogen－Microdiffusion Kjeldahl method
KS I ISO 14255-2023 Soil quality－Determination of nitrate nitrogen, ammonium nitrogen and total soluble nitrogen in air-dry soils using calcium chloride solution as extractant
KS I ISO 11261-2021 Soil quality－Determination of total nitrogen－Modified Kjeldahl method
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 I ISO 14255-2009(2019) Soil quality－Determination of nitrate nitrogen, ammonium nitrogen and total soluble nitrogen in air-dry soils using calcium chloride solution as extractant
KS I ISO 14255:2009 Soil quality－Determination of nitrate nitrogen, ammonium nitrogen and total soluble nitrogen in air-dry soils using calcium chloride solution as extractant
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 1125-2010 High purity nitrogen
KS M 1125-1995 High purity nitrogen
KS M 1125-1985 High purity nitrogen
KS M ISO 5315:2007 Fertilizers-Determination of total nitrogen content-Titrimetric method after distillation
KS M 1047-2009 Nitrogen monoxide and nitrogen dioxide(standard reference materials)
KS M ISO 5315:2013 Fertilizers－Determination of total nitrogen content－Titrimetric method after distillation
KS M 1125-2020 High purity nitrogen

RU-GOST R

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 26715-1985 Organic fertilizers. Methods for determination of total nitrogen
GOST EN 15478-2013 Fertilizers. Determination of total nitrogen in urea
GOST 26107-1984 Soils. Methods for determination of total nitrogen
GOST 10671.4-2016 Reagents. Methods for determination of total nitrogen impurity
GOST EN 15604-2013 Fertilizers. Determination of different forms of nitrogen in the same sample: nitric, ammoniacal, cyanamide and urea nitrogen
GOST 30181.3-1994 Mineral fertilizers. Method for determination of mass fraction of nitrogen in fertilizers with nitrate nitrogen
GOST 11827-1977 Diazol scarlet K and diazol pink O. Specifications
GOST 34111-2017 Juice products. Determination of nitrogen content by Kjeldahl method

NL-NEN

NEN 6642-1992 Water-Calculation of total nitrogen content
NEN 6646-1990 Water - Photometric determination of the content of ammonium nitrogen and of the sum of the contents of ammoniacal and organically bound nitrogen according to Kjeldahl by continuous flow analysis
NEN 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

International Organization for Standardization (ISO)

ISO 11261:1995 Soil quality - Determination of total nitrogen - Modified Kjeldahl method
ISO 14255:1998 Soil quality - Determination of nitrate nitrogen, ammonium nitrogen and total soluble nitrogen in air-dry soils using calcium chloride solution as extractant
ISO 3099:1974 Oilseed residues — Determination of total nitrogen content
ISO 332:1981 Coal — Determination of nitrogen — Macro Kjeldahl method
ISO 332:1974 Title missing - Legacy paper document
ISO 20236:2018 Water quality - Determination of total organic carbon (TOC), dissolved organic carbon (DOC), total bound nitrogen (TNb) and dissolved bound nitrogen (DNb) after high temperature catalytic oxidative combustion
ISO 20620:2021 Fertilizers and soil conditioners - Determination of total nitrogen by combustion
ISO 16948:2015 Solid biofuels - Determination of total content of carbon, hydrogen and nitrogen
ISO 5315:1984 Fertilizers; Determination of total nitrogen content; Titrimetric method after distillation

CZ-CSN

CSN 68 4124-1980 Determination of small mounts of total nitrogen
CSN 65 4836-1983 Minerál fertilizers Methode for determination of total nitrogen content
CSN 68 7137-1973 Cupferron (N-Nitroso-N-phenylhyclroxylamine ammotiium salt)
CSN 65 4121-1957 Nitride salt

Standard Association of Australia （SAA）

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

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
SNI 19-1498-1989 Continuous NO and NO2 test apparatus in exhaust-gases
SNI 19-1501-1989 Test methods for total nitrogen oxide in air
SNI 06-0042-1987 Nitrogen, Specification and test method

PT-IPQ

NP 3646-1987 fertilizer. Measurement of total nitrogen content

NO-SN

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

GOSTR

GOST R 58596-2019 Soils. Methods for determination of total nitrogen
GOST R ISO 15604-2019 Fertilizers. Determination of different forms of nitrogen in the same sample, containing nitrogen as nitric, ammoniacal, urea and cyanamide nitrogen

GOST

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

South African Bureau of Standard

SANS 5922:1978 Total moisture content of coal (nitrogen-oven method)

CEN - European Committee for Standardization

PD CEN/TS 15478:2006 Fertilizers - Determination of total nitrogen in urea
PD CEN/TS 15476:2006 Fertilizers - Determination of nitric and ammoniacal nitrogen according to Devarda
PD CEN/TS 15558:2007 Fertilizers - Determination of nitric and ammoniacal nitrogen according to Ulsch

GSO

GSO ISO 6851:2015 Photography -- Processing waste -- Determination of total amino nitrogen (microdiffusion Kjeldahl method)
OS GSO ISO 11261:2015 Soil quality -- Determination of total nitrogen -- Modified Kjeldahl method
GSO ISO 11261:2015 Soil quality -- Determination of total nitrogen -- Modified Kjeldahl method
BH GSO ISO 11261:2017 Soil quality -- Determination of total nitrogen -- Modified Kjeldahl method
OS GSO ISO 14255:2013 Soil quality - Determination of nitrate nitrogen, ammonium nitrogen and total soluble nitrogen in air-dry soils using calcium chloride solution as extractant
GSO ISO 14255:2013 Soil quality - Determination of nitrate nitrogen, ammonium nitrogen and total soluble nitrogen in air-dry soils using calcium chloride solution as extractant

VDI - Verein Deutscher Ingenieure

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 2-1973 Gaseous emission measurement; determination of the total sum of nitrogen monoxide and nitrogen dioxide; acidimetric titration 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
VDI 2456 Blatt 10-1989 Gaseous emission measurement; analytical determination of the sum of nitrogen monoxide and nitrogen dioxide; dimethylphenol method

YU-JUS

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

US-FCR

FCR AF 91-67-1997 LIQUID NITROGEN AND OXYGEN SAFETY

Japanese Industrial Standards Committee (JISC)

JIS K 0808:2008 Automatic total nitrogen analyzer
JIS K 0102-2:2022 Testing methods for industrial water and industrial wastewater -- Part 2: Inorganic anions, ammonium ion, organic nitrogen, total nitrogen and total phosphorus
JIS K 1107:2005 Nitrogen
JIS K 8037:1961 Azobenzene
JIS B 6915:1999 Process of nitriding and nitrocarburizing of iron and steel
JIS K 1107:1985 High purity nitrogen

GM Europe

GME B 040 0400-1999 Nitrogen (German)

TR-TSE

TS 974-1971 DETERMINATION OF NITROGEN, TOTAL SULPHUR CHLORINE AND PHOSPHORUS ?N COKE
TS 2556-1977 Nitriding Steels

RO-ASRO

STAS SR 4895-5-1997 Tobacco and tobacco products. Determination of total nitrogen content
SR 184-25-1998 Ethyl alcohol. Determination of ammonia and azotic bases nitrogen content
SR ISO 5315:1984 Fertilizers. Determination of totai nitrogen content.Titrimetric method after distilation

KR-KS

KS I ISO 14255-2009(2023) Soil quality－Determination of nitrate nitrogen, ammonium nitrogen and total soluble nitrogen in air-dry soils using calcium chloride solution as extractant

SE-SIS

SIS SS 02 81 86-1985 Determination of total arsenic in water - Silver diethyldithiocarbamate spectrometric method
SIS MNC 855 E-1975 NITRIDING STEELS SUMMARY
SIS 14 29 40-1975 Nitriding steel