Determination method of available nitrogen

Determination method of available nitrogen, Total:279 items.

The international standard classification for "Determination method of available nitrogen" includes: Animal feeding stuffs , Coals , Heat treatment and coating , Boilers and heat exchangers , Fertilizers , Pesticides and other agrochemicals , Other methods of testing of metals , Materials for aluminium production , Textiles in general , Chemical reagents , Solid fuels , Workplace atmospheres , Fuels in general .

The Chinese standard classification for "Determination method of available nitrogen" includes: Soil and fertilizer in general , Livestock and poultry feed and additive , Coal analysis methods , Heat treatment , Boiler and its auxiliary equipment , Chemical fertilizer and chemical soil conditioner , Basic standards and general methods on chemical fertilizers , Basic standards and general methods for pesticides , Metal physical property test method , Light metals and their alloys analysis method , Chemical reagent in general , Papermaking in general , Factory fire and blast protection technology , Pesticide , Petroleum products additive in general .

Xinjiang Provincial Standard of the People's Republic of China

DB65/T 602.5-2001 The determinanation of available phosphous in soil
DB65/T 4631.9-2023 Soil testing methods - Determination of available elements - Part 9: Determination of available silicon content
DB65/T 4631.2-2023 Soil testing methods - Determination of available elements - Part 2: Determination of hydrolyzable nitrogen content
DB65/T 4631.6-2023 Soil testing methods - Determination of available elements - Part 6: Determination of exchangeable manganese content
DB65/T 4631.5-2023 Soil testing methods - Determination of available elements - Part 5: Determination of available molybdenum content
DB65/T 602.13-2001 The determinanation of available zinc、manganese、copper and iron in soil
DB65/T 4631.7-2023 Soil testing methods - Determination of available elements - Part 7: Determination of easily reducible manganese content
DB65/T 4631.8-2023 Soil testing methods - Determination of available elements - Part 8: Determination of available sulfur content
DB65/T 4631.4-2023 Soil testing methods - Determination of available elements - Part 4: Determination of available boron content
DB65/T 4631.1-2023 Soil testing methods - Determination of elements in effective form - Part 1: General principles and guidance

Hebei Provincial Standard of the People's Republic of China

DB13/T 843-2007 Soil Available Nitrogen Determination
DB13/T 1224-2010 Determination method of total nitrogen in organic chemical products

Professional Standard - Agriculture

NY/T 1848-2010 Method for determination of ammonium nitrogen,available phosphorus and rapidly-available potassium in neutrality or calcareous soil—Universal extract-colorimetric method
GB 12297-1990 Method for the determination of available phosphorus in calcareous soil
NY/T 149-1990 Method for the determination of available boron in soil
GB 608-1988 General method for chemical reagent nitrogen determination
NY/T 148-1990 Method for the determination of available boron in soil
NY/T 297-1995 Determination of Total Nitrogen in Organic Fertilizers
GB 12298-1990 Method for the determination of available boron in soil
NY/T 1849-2010 Method for determination of ammonium nitrogen,available phosphorus and rapidly-available potassium in acid soil—Universal extract-colorimetric method

Taiwan Provincial Standard of the People's Republic of China

CNS 7476-1981 Methods of Measurement for Effective F - number & T - number
CNS 12590-1989 Method of Test for Organic Nitrogen in Paper and Paperboard

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

GB/T 30728-2014 Determination of nitrogen in solid biofuels
GB/T 31746-2015 Method for the determination of active content of aldicarb―High performance liquid chromatography(HPLC)
GB/T 6609.26-2004 Chemical analysis methods and Determination of physical performance of alumina Determination of absolute density-Pycnometer method
GB/T 17592.2-1998 Textiles--Test method of the use of banned azo colourants--High pressure liquid chromatography method
GB/T 2441.1-2001 Determination of urea-Determination of total nitrogen content
GB/T 31749-2015 Method for the determination of active content of molinate emulsifiable concentrate―Gas chromatography(GC)
GB/T 30655-2014 Test methods for internal quantum efficiency of nitride LED epitaxial layers
GB/T 16913.2-1997 Methods of dust character test--Part 2: Determination of effective density--Pyknometer method
GB/T 41733-2022 Standard test method for determination of carbon residue of organic heat transfer fluids—Nitrogen charge method
GB/T 9452-2003 Testing method for work zone of heat treatment furnace
GB/T 9452-2012 Testing method for working zone of heat treatment furnace
GB/T 20216-2006 Determination of effective residual ink
GB/T 31750-2015 Method for the determination of active content of anilofos emulsifiable concentrate(EC)―High performance liquid chromatography (HPLC)
GB/T 17767.1-2008 Determination of organic-inorganic compound fertilizers - Part 1: Total nitrogen content
GB/T 9452-2023 Test method for qualified work zone of heat treatment furnace
GB/T 19227-2008 Determination of nitrogen in coal
GB/T 608-1988 Chemical reagent--General method for the determination of nitrogen
GB/T 15398-1994 Determination of available lysine in feedstuffs

Inner Mongolia Provincial Standard of the People's Republic of China

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

国家质量监督检验检疫总局

SN/T 4677-2016 Determination of azodicarbonamide in foods for export―HPLC method

Professional Standard - Chemical Industry

HG/T 4103-2009 Chemical reagent - General method for the determination of organic nitrogen compounds

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 - Coal

MT 279-1994 Harmful Gas Existing in Mine Air Detection Method of Nitrogen Oxide（Detector Tube Method）
MT/T 802.1-1999 Determination of effective sulfur of pyrite and concentrated pyrite in coal seam
MT/T 279-1994 Method for determination of harmful gas nitrogen oxides in mine air (detection tube method)

Fujian Provincial Standard of the People's Republic of China

DB35/T 1459-2014 Determination of available arsenic and available mercury in acidic soil by atomic fluorescence method

Shandong Provincial Standard of the People's Republic of China

DB37/T 3867-2020 Method for Determination of HC6 Active Component Content by Gas Chromatography
DB37/T 3868-2020 Method for Determination of Active Component Content of Dibromochloropropane Gas Chromatography
DB37/T 1857-2011 Determination of Available Phosphorus in Calcareous Soil Olsen Method

Group Standards of the People's Republic of China

T/CMA 031-2021 Calibration method for basic nitrogen meters
T/HNNMIA 89-2023 Determination of available lead and available cadmium content in soil by inductively coupled plasma mass spectrometry
T/SXSYSJSXH 0001-2024 Determination of soil available mercury
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/NAIA 0278-2024 Determination of soil available molybdenum Standard addition method

Professional Standard - Commodity Inspection

SN/T 1407-2004 Determination of active content of 2.5% brodifacoum mother solution for import and export - HPLC
SN/T 4042-2014 Determination of azide in wines for export
SN/T 3005-2011 Test Method for Instrumental Determination of Carbon

煤炭工业部

ZB 21001-1990 Method for determination of available sulfur in coal-based pyrite and pyrite concentrates

工业和信息化部

QB/T 2623.9-2020 Test methods of soaps- -Determination of total effctive matter content in soaps

Anhui Provincial Standard of the People's Republic of China

DB34/T 2135-2014 Determination method of carbon, hydrogen and nitrogen in coal thermal conductivity method
DB34/T 1541-2011 Determination of Azodicarbonamide in wheat flour High performance liquid chromatography method

Tianjin Provincial Standard of the People's Republic of China

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

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

GJB 5214.12-2003 Special ammunition effect test method Part 12: Photographic method for measuring effective smoke screen width and effective smoke screen height of smoke projectiles
GJB 8670.11-2015 Special ammunition effect test method Part 11: Photographic method for determination of effective smoke screen width and effective smoke screen height of smoke projectiles

Professional Standard - Military and Civilian Products

WJ 2128-1993 Method for Determination of Nitrogen Content in Primer
WJ 2231-1994 Evaluation of Effective Hardened Layer Depth in Carburizing, Carbonitriding and Nitriding of Armored Vehicle Parts

Professional Standard - Aviation

HB 5425-1989 Testing Method for Work Zone of Heat Treatment Furnace of Aviation Workpiece
HB 5425-2012 Testing method for working zone of heat treatment furnace for aviation

Professional Standard - Petrochemical Industry

SH/T 0034-1990 Determination of effective fractions in additive

Ningxia Provincial Standard of the People's Republic of China

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

农业农村部

NY/T 4119-2022 General methods for determination of active ingredient content of pesticides-High performance liquid chromatography(HPLC)

VN-TCVN

TCVN 5255-2009 Soil quality.Method for the determination of bio-available nitrogen
TCVN 5256-2009 Soil quality.Method for the determination of bio-available phosphorus
TCVN 3706-1990 Aquatic products.Method for the determination of nitrogen ammonia content
TCVN 6498-1999 Soil quality.Determination of total nitrogen.Modifierd Kejldahl method
TCVN 3707-1990 Aquatic products.Method for the determination of amine ammonia nitrogen content
TCVN 305-2010 Steel and iron.Determination of nitrongen content.Methods of chemical analysis.

BE-NBN

NBN T 91-255-1976 Water analysis methods - Determination of the ammoniacal and organic nitrogen - (Kjeldahl nitrogen)

IN-BIS

IS 5194-1969 Determination method of nitrogen-Kjeldahl method
IS 8168-1976 Determination method of effective lysine in food

RU-GOST R

GOST 26343-1984 Leather. Method for determination of effective area
GOST 26715-1985 Organic fertilizers. Methods for determination of total nitrogen
GOST 17444-1976 Reagents. Methods for determination of parent substance of organic nitrogen bearing compounds and salts of organic acids
GOST 26716-1985 Organic fertilizers. Methods for determination of ammonium 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 13020.7-1985 Metallic chrome. Methods for determination of nitrogen
GOST 9853.1-1979 Sponge titanium. Method for the determination of nitrogen
GOST 17444-2016 Reagents. Methods for determination of main substance of nitrogen containing organic compounds and salts of organic acids
GOST 14338.4-1982 Molybdenum. Methods for determination of nitrogen, oxygen and hydrogen
GOST 14339.4-1982 Tungsten. Methods for the determination of nitrogen, oxygen, hydrogen
GOST 33045-2014 Water. Methods for determination of nitrogen-containing matters
GOST 10671.4-2016 Reagents. Methods for determination of total nitrogen impurity
GOST 24596.3-2015 Feed phosphates. Method for determination of nitrogen
GOST R 53745-2009 Organic fertilizers. Method for determination of specific effective activity of natural radioactive nuclei
GOST 22720.4-1977 Rare metals and their alloys. Method for the determination of nitrogen
GOST R 50672-1994 Household chemical prodacts. Method for determination of active oxygen mass fraction
GOST 20851.1-1975 Mineral fertilizers. Methods for determination of nitrogen content
GOST 27753.8-1988 Greenhouse grounds method for determination of ammonium nitrogen
GOST 13301-1967 Organic chemical products. Method of test for microdetermination of nitrogen
GOST 30181.6-1994 Mineral fertilizers. Method for determination of mass fraction of nitrogen in ammonium salts (in ammonium form, using the formaldehyde method)
GOST 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 938.7-1968 Leather. Method of determination of nitrogen content
GOST R 57418-2017 Mineral wool heat-insulatingmaterials and products. Method of determining the effective operation period
GOST 27753.7-1988 Greenhouse grounds methods for determination of nitrate nitrogen
GOST 24567-1981 Pneumatic tyres. Method for measurement of effective rolled circumference in road tests
GOST R 55479-2013 Meat and meat products. Method for determination of amino-ammonia nitrogen

American Society for Testing and Materials (ASTM)

ASTM E258-67(2002) Standard Test Method for Total Nitrogen in Organic Materials by Modified Kjeldahl Method
ASTM D8126-17 Standard Test Method for Efficient Basicity Determination by Potentiometric Hydrochloric Acid Titration
ASTM E2036-24 Standard Test Method for Nitrogen Trichloride in Liquid Chlorine by High Performance Liquid Chromatography (HPLC)
ASTM E2036-01 Standard Test Method for Nitrogen Trichloride in Liquid Chlorine by High Performance Liquid Chromatography (HPLC)
ASTM E2036-99 Standard Test Method for Nitrogen Trichloride in Liquid Chlorine by High Performance Liquid Chromatography (HPLC)
ASTM E258-67(1996)e1 Standard Test Method for Total Nitrogen in Organic Materials by Modified Kjeldahl Method
ASTM E147-61(2017) Standard Specification for Apparatus for Microdetermination of Nitrogen by Kjeldahl Method
ASTM D8126-21 Standard Test Method for Efficient Basicity Determination by Potentiometric Hydrochloric Acid Titration
ASTM E2036-07 Standard Test Method for Nitrogen Trichloride in Liquid Chlorine by High Performance Liquid Chromatography (HPLC)
ASTM E2036-15 Standard Test Method for Nitrogen Trichloride in Liquid Chlorine by High Performance Liquid Chromatography (HPLC)
ASTM E258-07 Standard Test Method for Total Nitrogen in Organic Materials by Modified Kjeldahl Method
ASTM F1812-02 Standard Test Method for Determining the Effectiveness of Membrane Switch ESD Shielding
ASTM F1812-97a Standard Test Method for Determining the Effectiveness of Membrane Switch ESD Shielding
ASTM F1812-09 Standard Test Method for Determining the Effectiveness of Membrane Switch ESD Shielding
ASTM D982-16 Standard Test Method for Organic Nitrogen in Paper and Paperboard
ASTM D982-65 Method of Test for Organic Nitrogen in Paper and Paperboard
ASTM G122-96(2015)e1 Standard Test Method for Evaluating the Effectiveness of Cleaning Agents
ASTM E2896-12 Standard Test Method for Quantitative Petri Plate Method (QPM) for Determining the Effectiveness of Antimicrobial Towelettes
ASTM D4620-02(2007) Standard Test Method for Evaluating the Effective Surface Area of Zinc Oxide in Rubber
ASTM D3228-22 Standard Test Method for Total Nitrogen in Lubricating Oils and Fuel Oils by Modified Kjeldahl Method
ASTM D3590-02 Standard Test Methods for Total Kjeldahl Nitrogen in Water
ASTM E3082-17 Standard Test Methods for Determining the Effectiveness of Fire Retardant Treatments for Natural Christmas Trees

British Standards Institution (BSI)

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
BS 5551-4.1.3:1986 Fertilizers. Chemical analysis. Determination of nitrogen. Method for determination of total nitrogen content (titrimetric method after distillation)
BS 7755-3.7:1995 Soil quality. Chemical methods. Determination of total nitrogen. Modified Kjeldahl method
BS 6479:1984 Method for determination and verification of the effective depth of carburized and hardened cases in steels
PD CEN/TS 17771:2022 Organic and organo-mineral fertilizers. Determination of the nitrogen content
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
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 5551-4.1.2:1982 Fertilizers. Chemical analysis. Determination of nitrogen. Determination of ammoniacal nitrogen, titrimetric method after distillation
BS 5551 SubSec.4.1.5:1993 Fertilizers. Chemical analysis. Determination of nitrogen. Method for determination of urea nitrogen content (gravimetric method using xanthydrol)

German Institute for Standardization

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 50190-3:1979 Hardness depth of heat-treated parts; determination of the effective depth of hardening after nitriding
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 17771:2022-07 Organic and organo-mineral fertilizers - Determination of the nitrogen content; German version CEN/TS 17771:2022
DIN CEN/TS 17771:2022 Organic and organo-mineral fertilizers - Determination of the nitrogen content
DIN EN ISO 10695:2000-11 Water quality - Determination of selected organic nitrogen and phosphorus compounds - Gas chromatographic methods (ISO 10695:2000); German version EN ISO 10695:2000
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 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).

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
FprCEN/TS 17771-2021 Organic and organo-mineral fertilizers - Determination of the nitrogen content
CEN/TS 17771:2022 Organic and organo-mineral fertilizers - Determination of the nitrogen content

Indonesia Standards

SNI 4146-2013 Method for determination of total nitrogen content in sediment by Kjeldahl titration method

Korean Agency for Technology and Standards (KATS)

KS D 2555-1995 Methods for determination of nitrogen in tantalum
KS D 2555-2015 Methods for determination of nitrogen in tantalum
KS D 1811-2003(2018) Methods for determination of nitrogen in iron and steel
KS D 1811-1993 Methods for determination of nitrogen in iron and steel
KS D 1811-2023 Methods for determination of nitrogen in iron and steel
KS D 2555-2020 Determination of nitrogen in tantalum
KS K 0751-1998 TESTING METHOD FOR DETERMINING APPARENT OPENING SIZE(AOS) OF GEOTEXTILE
KS A 0802-1993 General rules for energy evaluation method by available energy
KS A 0802-1986 General rules for energy evaluation method by available energy
KS D 1811-2003 Methods for determination of nitrogen in iron and steel
KS D 0050-1990(2005) Method for determination of intercommunicating porosity of sintered metal,oil impregnated
KS D 0215-2000 Steel-Determination and verification of the effective depth of carburized and hardened cases
KS D 2573-1995 Methods for determination of nitrogen in zirconium and zirconium alloys
KS D 2573-2020 Methods for determination of nitrogen in zirconium and zirconium alloys
KS D 2573-2015(2020) Methods for determination of nitrogen in zirconium and zirconium alloys
KS D 2555-2005 Methods for determination of nitrogen in tantalum
KS D 0274-1993 Method of measuring nitrided case depth for iron and stee1
KS D 2530-2007 Methods for determination of nitrogen in titanium and titanium alloys
KS K 0754-2007 Test method for apparent opening size of geotextile-Dry method
KS K 0754-2015 Standard test method for determining apparent opening size of a geotextile
KS D 2573-2015 Methods for determination of nitrogen in zirconium and zirconium alloys
KS D 2530-2016 Methods for determination of nitrogen in titanium and titanium alloys
KS D 2530-2021 Methods for determination of nitrogen in titanium and titanium alloys
KS E ISO 333-2018 Coal－Determination of nitrogen－Semi-micro Kjeldahl method
KS E ISO 333-2003(2013) Coal－Determination of nitrogen－Semi-micro Kjeldahl method
KS I ISO 10695-2006(2016) Water quality－Determination of selected organic nitrogen andphosphorus compounds－Gas chromatographic methods
KS I ISO 10695:2021 Water quality — Determination of selected organic nitrogen and phosphorus compounds — Gas chromatographic methods
KS M ISO 5313-2007(2012) High nitrogen content, straight ammonium nitrate fertilizers－Determination of oil retention
KS H ISO 1871-2013(2018) Agricultural food products ― General directions for the determination of nitrogen by the Kjeldahl method
KS E ISO 333:2003 Coal－Determination of nitrogen－Semi-micro Kjeldahl method
KS D 0275-1993 Method of measuring surface hardness for nitrided iron and stee1

Japanese Industrial Standards Committee (JISC)

JIS H 1685:2000 Method for determination of nitrogen in tantalum
JIS H 1685:1976 Methods for determination of nitrogen in tantalum
JIS G 1228:1997 Iron and steel -- Methods for determination of nitrogen content
JIS H 1612:1993 Methods for determination of nitrogen in titanium and titanium alloys
JIS H 1653:1991 Methods for determination of nitrogen in zirconium and zirconium alloys
JIS K 1571:2010 Wood preservatives -- Performance requirements and their test methods for determining effectiveness
JIS K 0104:2000 Methods for determination of nitrogen oxides in flue gas
JIS G 1228 AMD 1:2006 Iron and steel -- Methods for determination of nitrogen content (Amendment 1)
JIS K 0104:1984 Methods for determination of oxides of nitrogen in flue gases
JIS A 1186:1995 Measuring methods for working life of polyester resin concrete
JIS K 1571:2004 Test methods for determining the effectiveness of wood preservatives and their performance requirements

Association Francaise de Normalisation

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 U42-191:2019 Fertilizers - Nitrogenous fertilizers containing synthetic organic nitrogen - Determination of the types of nitrogen
NF U42-191:1988 Fertilizers. Nitrogenous fertilizers containing synthetic organic nitrogen. Determination of the types of nitrogen.
XP CEN/TS 17771:2022 Organic and organo-mineral fertilizers - Determination of nitrogen content
NF V04-211:1971 MILK. DETERMINATION OF TOTAL NITROGEN CONTENT. (KJELDAHL METHOD).
XP U42-730*XP CEN/TS 17771:2022 Organic and organo-mineral fertilizers - Determination of the nitrogen content
NF U42-141:1984 Fertilizers. Determination of nitrate nitrogen content. Nitrogen gravimetric method.
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 EN ISO 10695:2000 Water quality - Determination of certain selected organic nitrogen and phosphorus compounds - Gas chromatography methods
NF T90-121*NF EN ISO 10695:2000 Water quality - Determination of selected organic nitrogen and phosphorus compounds - Gas chromatographic methods

SE-SIS

SIS SS 02 81 47-1989 Determination of available chlorine in water — Titrimetric method
SIS SS 02 81 72-1989 Determination of available chlorine in water — Photometric method

CZ-CSN

CSN 65 0176 Cast.7-1979 Testing methods for tarch. Determination of nitrogen
CSN 65 4836-1983 Minerál fertilizers Methode for determination of total nitrogen content
CSN 56 0020-1987 General directions for the determination f nitrogen by the Kjeldahl method

GOSTR

GOST 9853.1-1996 Sponge titanium. Method for determination of nitrogen
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 R 57418-2020 Mineral wool heat-insulating materials and products. Method for assessing the stability of thermal conductivity characteristics to the effect of alternating temperatures

GSO

GSO ASTM E2036:2021 Standard Test Method for Nitrogen Trichloride in Liquid Chlorine by High Performance Liquid Chromatography (HPLC)
BH GSO ASTM E2036:2022 Standard Test Method for Nitrogen Trichloride in Liquid Chlorine by High Performance Liquid Chromatography (HPLC)
GSO ISO 5725-4:2010 Accuracy (trueness and precision) of measurement methods and results -- Part 4: Basic methods for the determination of the trueness of a standard measurement method
GSO ISO 4321:1994 WASHING POWDERS — DETERMINATION OF ACTIVE OXYGEN CONTENT: TITRIMETRIC METHOD
OS GSO ISO 10695:2015 Water quality -- Determination of selected organic nitrogen and phosphorus compounds -- Gas chromatographic methods
GSO ISO 10695:2015 Water quality -- Determination of selected organic nitrogen and phosphorus compounds -- Gas chromatographic methods
BH GSO ISO 10695:2016 Water quality -- Determination of selected organic nitrogen and phosphorus compounds -- Gas chromatographic methods
OS GSO ISO 11261:2015 Soil quality -- Determination of total nitrogen -- Modified Kjeldahl method

PL-PKN

PN C04576 ArkusZ11-1973 Water and waste water Tests for nitrogen Determination of organie nitrogen

KR-KS

KS D 1811-2003(2023) Methods for determination of nitrogen in iron and steel
KS D 0275-1993(2023) Method of measuring surface hardness for nitrided iron and steel
KS I ISO 10695-2021 Water quality — Determination of selected organic nitrogen and phosphorus compounds — Gas chromatographic methods

SCC

BS 5659-5:1979 Methods of test for acid-grade fluorspar-Determination of available fluorine content
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
AWWA ACE58255 Analytical Methods for Organic-N in Water Sources
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
CSA Z223.24-M1983-1983(R1999) Method for the Measurement of Nitric Oxide and Nitrogen Dioxide in Air
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)
NS 4731:1991 Water analysis — Determination of available chlorine in water — Titrimetric method
BS EN ISO 8968-1:2002 Milk. Determination of nitrogen content-Kjeldahl method
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 ISO 10695:2000 Water quality - Determination of selected organic nitrogen and phosphorus compounds - Gas chromatographic methods
DANSK DS/EN 25663:1994 Water quality - Determination of Kjeldahl nitrogen - Method after mineralization with selenium
JIS K 0110:2018 Methods for determination of dinitrogen monoxide in flue gas
BS 5697-1:1979 Methods of test for starch and its derivatives and by-products. Determination of nitrogen conteny by the Kjeldahl method ( titrimetric method)
DANSK DS/ISO 5663:1994 Water quality - Determination of Kjeldahl nitrogen - Method after mineralization with selenium
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
BS PD CEN/TS 17771:2022 Organic and organo-mineral fertilizers. Determination of the nitrogen content
NS 4729:1991 Water analysis — Determination of available chlorine in water — Photometric method
SN-CEN/TS 17771:2022 Organic and organo-mineral fertilizers - Determination of the nitrogen content
DANSK DS/CEN/TS 17771:2022 Organic and organo-mineral fertilizers – Determination of the nitrogen content
BS 6445-1:1983 Hexafluorosilicic acid for industrial use.-Method for determination of available fluorine content (potentiometric method after distillation)

PH-BPS

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

International Organization for Standardization (ISO)

ISO 332:1981 Coal — Determination of nitrogen — Macro Kjeldahl method
ISO 332:1974 Title missing - Legacy paper document
ISO 20921:2019 Textiles — Determination of stable nitrogen isotope ratio in cotton fibres
ISO 333:1983 Coal; Determination of nitrogen; Semi-micro Kjeldahl method
ISO 4507:1978 Sintered ferrous materials, carburized or carbonitrided; Determination and verification of effective case depth by the Vickers microhardness testing method

VDI - Verein Deutscher Ingenieure

VDI 3792 Blatt 1-1978 Response dose determination - Standardized grass exposure method

FI-SFS

SFS-EN 113 E-1986 This standard is approved in English

TN-INNORPI

NT 14.33-1983 Determination of all nitrogen contents in milk

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

Institute of Electrical and Electronics Engineers (IEEE)

IEEE 299-2006 Standard Method for Measuring the Effectiveness of Electromagnetic Shielding Enclosures
IEEE 299-1997 Standard method for measuring the effectiveness of electromagnetic shielding enclosures

Spanish Association for Standardization (UNE)

UNE-CEN/TS 17771:2022 Organic and organo-mineral fertilizers - Determination of the nitrogen content (Endorsed by Asociación Española de Normalización in May of 2022.)
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 14401:2005 Rigid plastics containers - Methods to test the effectiveness of closures

GOST

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

CU-NC

NC 26-124-1985 Drugs, Deterrnination of Nitrogen by Kjejdah!. Testing Method

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 14401-2004 Rigid plastics containers - Methods to test the effectiveness of closures

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/EN 14401:2004 Rigid plastics containers - Methods to test the effectiveness of closures

HU-MSZT

MNOSZ 260-12.lap-1955 Experiments to detect sewage nitrogen and organic nitrogen

AT-ON

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

Association of Official Analytical Chemists (AOAC)

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

AGMA - American Gear Manufacturers Association

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