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nitrogen method

nitrogen method, Total:182 items.

In the international standard classification, nitrogen method involves: Fruits. Vegetables, Coals, Water quality, External water conveyance systems, Milk and milk products, Sugar. Sugar products. Starch, Burners. Boilers, Soil quality. Pedology, Animal feeding stuffs, General methods of tests and analysis for food products, Beverages, Photography, Tobacco, tobacco products and related equipment, Wastes, Products of the chemical industry, Lubricants, industrial oils and related products, Organic chemicals, Cereals, pulses and derived products, Fertilizers, Analytical chemistry, Rubber, Farming and forestry, Ferrous metals, Materials for aerospace construction, Raw materials for rubber and plastics, Plastics, Pulps, Mechanical testing, Non-ferrous metals, Medical equipment, Semiconducting materials, Mining and quarrying, Inorganic chemicals, Ferroalloys.

IN-BIS, nitrogen method

IS 5194-1969

FI-SFS, nitrogen method

SFS 5023-1984

RU-GOST R, nitrogen method

GOST 34111-2017 Juice products. Determination of nitrogen content by Kjeldahl method
GOST 26889-1986 Food-stuffs and food additives. General directions for the determinations of nitrogen content by the Kjeldahl method
GOST R 55246-2012 Milk and milk products. Determination of non-protein nitrogen content by Kjeldahl method
GOST 27749.0-1988 Carbamid. Method of nitrogen content determination
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 26715-1985 Organic fertilizers. Methods for determination of total nitrogen
GOST 28743-1993 Solid mineral fuel. Methods for determination of nitrogen
GOST 26716-1985 Organic fertilizers. Methods for determination of ammonium nitrogen
GOST 26239.7-1984 Semiconductor silicon. Method of oxygen, carbon and nitrogen determination
GOST 28743-1990 Coal. Determination of nitrogen. Semi-micro Kjeldahl method
GOST 15933.11-1970 Ferroniobium. Method for the determination of nitrogen content

Association Francaise de Normalisation, nitrogen method

NF EN ISO 3188:1994 Amidons, fécules et produits dérivés - Dosage de l'azote selon la méthode de Kjeldahl - Méthode titrimétrique.
NF V04-211:1971 MILK. DETERMINATION OF TOTAL NITROGEN CONTENT. (KJELDAHL METHOD).
NF EN 12135:1997 Jus de fruits et de légumes - Dosage de l'azote - Méthode de Kjeldahl.
NF ISO 11261:1995 Qualité du sol - Dosage de l'azote total - Méthode de Kjeldahl modifiée.
NF T90-110*NF EN 25663:1994 Water quality - Determination of kjekldahl nitrogen - Method after mineralization with selenium.
NF EN ISO 5378:1994 Amidons, fécules et produits dérivés - Dosage de l'azote selon la méthode de Kjeldahl - Méthode spectrophotométrique.
NF ISO 1871:2009 Produits alimentaires et aliments des animaux - Lignes directrices générales pour le dosage de l'azote selon la méthode de Kjeldahl
NF X31-111*NF ISO 11261:1995 Soil quality. Determination of total nitrogen. Modified kjeldahl method.
NF T20-219:1987 Aluminium oxide primarily used for the production of aluminium. Determination of specific surface area by nitrogen adsorption. Single-point method.
NF EN ISO 20483:2014 Céréales et légumineuses - Détermination de la teneur en azote et calcul de la teneur en protéines brutes - Méthode de Kjeldahl
NF EN 13654-1:2002 Amendements du sol et supports de culture - Détermination de l'azote - Partie 1 : méthode de Kjeldahl modifiée
NF V03-750:2007 Cereals and pulses - Determination of the nitrogen content and calculation of the crude protein content - Kjeldahl method.
NF EN ISO 5983-1:2005 Aliments des animaux - Détermination de la teneur en azote et calcul de la teneur en protéines brutes - Partie 1 : méthode Kjeldahl
NF EN ISO 8968-1:2014 Lait et produits laitiers - Détermination de la teneur en azote - Partie 1 : méthode Kjeldahl et calcul de la teneur en protéines brutes
NF V04-221-1*NF EN ISO 8968-1:2014 Milk and milk products - Determination of nitrogen content - Part 1 : Kjeldahl principle and crude protein calculation
NF EN ISO 8988:2006 Plastiques - Résines phénoliques - Détermination de la teneur en hexaméthylènetétramine - Méthode Kjeldahl, méthode à l'acide perchlorique et méthode à l'acide chlorhydrique

Jilin Provincial Standard of the People's Republic of China, nitrogen method

DB22/T 1932-2013 Determination method of total nitrogen content in peat (Kjeldahl method)
DB22/T 1995-2014 Determination of feed grade choline chloride content Kjeldahl method

International Organization for Standardization (ISO), nitrogen method

ISO 332:1981 Coal — Determination of nitrogen — Macro Kjeldahl method
ISO 332:1974 Title missing - Legacy paper document
ISO 333:1983 Coal; Determination of nitrogen; Semi-micro Kjeldahl method
ISO 11261:1995 Soil quality - Determination of total nitrogen - Modified Kjeldahl method
ISO 8968-1:2001 | IDF 20-1: 2001 Milk — Determination of nitrogen content — Part 1: Kjeldahl method
ISO 1871:2009 Food and feed products - General guidelines for the determination of nitrogen by the Kjeldahl method
ISO/TS 17837:2008 | IDF/RM 25: 2008 Processed cheese products — Determination of nitrogen content and crude protein calculation — Kjeldahl method
ISO 24698-2:2008 Rubber, raw - Determination of bound acrylonitrile content in acrylonitrile-butadiene rubber (NBR) - Part 2: Kjeldahl method

Group Standards of the People's Republic of China, nitrogen method

T/QAS 071-2021 Determination of total nitrogen in brine Kjeldahl method
T/NAIA 044-2021 Urine Total Nitrogen Determination in Livestock Kjeldahl Method
T/NAIA 001-2020 Determination of ammoniacal nitrogen in fermented feed Kjeldahl method
T/NAIA 060-2021 Determination of true protein in feed Kjeldahl method

CZ-CSN, nitrogen method

CSN ON 65 4510-1962
CSN 56 0020-1987 General directions for the determination f nitrogen by the Kjeldahl method
CSN ISO 1871:1994 Agricultural food products-General directions for the determination of nitrogen by the Kjeldahl method

Indonesia Standards, nitrogen method

SNI 4146-2013

Korean Agency for Technology and Standards (KATS), nitrogen method

KS H ISO 3188-2008(2018) Starches and derived products－Determination of nitrogen content by the Kjeldahl method－Titrimetric method
KS E ISO 333-2003(2013) Coal－Determination of nitrogen－Semi-micro Kjeldahl method
KS H ISO 5378-2008(2018) Starches and derived products－Determination of nitrogen content by the Kjeldahl method－Spectrophotometric method
KS E ISO 333:2003 Coal－Determination of nitrogen－Semi-micro Kjeldahl method
KS I ISO 11261-2008(2018) Soil quality－Determination of total nitrogen－Modified Kjeldahl method
KS I ISO 11261-2008(2021) Soil quality－Determination of total nitrogen－Modified Kjeldahl method
KS I ISO 11261:2008 Soil quality-Determination of total nitrogen-Modified Kjeldahl method
KS M ISO 6851-2002(2017) 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 H ISO 1871-2013(2018) Agricultural food products ― General directions for the determination of nitrogen by the Kjeldahl method
KS M ISO 8988-2010(2020) Plastics－Phenolic resins－Determination of hexamethylenetetramine content－Kjeldahl method, perchloric acid method and hydrochloric acid method
KS M ISO 24698-2:2010 Rubber, raw－Determination of bound acrylonitrile content in acrylonitrile-butadiene rubber(NBR)－Part 2：Kjeldahl method
KS D 1811-2003(2018) Methods for determination of nitrogen in iron and steel
KS D 8351-1995(2010) Titanium nitride coatings by dry processing

Association of Official Analytical Chemists (AOAC), nitrogen method

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

未注明发布机构, nitrogen method

BS EN ISO 5378:1994(1999) Starches and derived products — Determination of nitrogen content by the Kjeldahl method — Spectrometric method
BS EN ISO 3188:1994(1999) Starches and derived products — Determination of nitrogen content by the Kjeldahl method — Titrimetric method
DIN EN ISO 8968-1:2002 Milk — Determination of nitrogen content — Part 1: Kjeldahl method (ISO 8968-1:2001)
BS EN ISO 5983-1:2005(2009) Animal feeding stuffs — Determination of nitrogen content and calculation of crude protein content — Part 1 : Kjeldahl method

BE-NBN, nitrogen method

NBN T 91-255-1976 Water analysis methods - Determination of the ammoniacal and organic nitrogen - (Kjeldahl nitrogen)
NBN-EN ISO 5378:1994 Starches and derived products - Determination of nitrogen content by the Kjeldahl method - Spectrophotometric method (ISO 5378:1978)

Danish Standards Foundation, nitrogen method

DS/EN ISO 3188:1995 Starches and derived products - Determination of nitrogen content by the Kjeldahl method - Titrimetric method
DS/EN ISO 5378:1995 Starches and derived products - Determination of nitrogen content by the Kjeldahl method - Spectrophometric method
DS/EN ISO 8968-1:2002 Milk - Determination of nitrogen content - Part 1: Kjeldahl method
DS/EN 12135:1998 Fruit and vegetable juices - Determination of nitrogen content - Kjeldahl method
DS/ISO 1871:2009 Food and feed products - General guidelines for the determination of nitrogen by the Kjeldahl method
DS/EN ISO 20483:2007 Cereals and pulses - Determination of the nitrogen content and calculation of the crude protein content - Kjeldahl method
DS/EN 13654-1:2002 Soil improvers and growing media - Determination of nitrogen - Part 1: Modified Kjeldahl method
DS/EN ISO 5983-1/AC:2009 Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Part 1: Kjeldahl method
DS/EN ISO 5983-1:2005 Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Part 1: Kjeldahl method
DS/EN ISO 8988:2007 Plastics - Phenolic resins - Determination of hexamethylenetetramine content - Kjeldahl method, perchloric acid method and hydrochloric acid method
DS 242:1988 Water quality. Kjeldahl-nitrogen. Kjeldahl-method

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

GB/T 41733-2022 Standard test method for determination of carbon residue of organic heat transfer fluids—Nitrogen charge method
GB/T 41965-2022 Photography—Processing waste—Determination of total amino nitrogen(microdiffusion Kjeldahl method)

British Standards Institution (BSI), nitrogen method

BS 7755-3.7:1995 Soil quality. Chemical methods. Determination of total nitrogen. Modified Kjeldahl method
BS ISO 6851:2001 Photography. Processing waste. Determination of total amino nitrogen (microdiffusion Kjeldahl method)
DD ISO/TS 17837:2008 Milk and milk products. Determination of nitrogen content and crude protein calculation. Kjeldahl method
BS ISO 24698-2:2018 Rubber, raw. Determination of bound acrylonitrile content in acrylonitrile-butadiene rubber (NBR) - Kjeldahl method
BS ISO 24698-2:2008 Rubber, raw - Determination of bound acrylonitrile content in acrylonitrile-butadiene rubber (NBR) - Kjeldahl method
PD CR 13903-2001 General guidance on the equipment used for inhaled nitric oxide therapy

VN-TCVN, nitrogen method

TCVN 6498-1999 Soil quality.Determination of total nitrogen.Modifierd Kejldahl method

ZA-SANS, nitrogen method

SANS 333:1996 Coal - Determination of nitrogen - Semi-micro Kjeldahl method
SANS 5922:1978 Total moisture content of coal (nitrogen-oven method)

Lithuanian Standards Office , nitrogen method

LST EN ISO 3188:2000 Starches and derived products - Determination of nitrogen content by the Kjeldahl method - Titrimetric method (ISO 3188:1978)
LST EN 12135-2001 Fruit and vegetable juices - Determination of nitrogen content - Kjeldahl method
LST EN ISO 5378:2000 Starches and derived products - Determination of nitrogen content by the Kjeldahl method - Spectrophotometric method (ISO 5378:1978)
LST EN ISO 8968-1:2002 Milk - Determination of nitrogen content - Part 1: Kjeldahl method (ISO 8968-1:2001)
LST EN 13654-1-2002 Soil improvers and growing media - Determination of nitrogen - Part 1: Modified Kjeldahl method
LST EN ISO 20483:2007 Cereals and pulses - Determination of the nitrogen content and calculation of the crude protein content - Kjeldahl method (ISO 20483:2006)
LST EN ISO 5983-1:2005 Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Part 1: Kjeldahl method (ISO 5983-1:2005)
LST EN ISO 5983-1:2005/AC:2009 Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Part 1: Kjeldahl method (ISO 5983-1:2005/Cor 1:2008)
LST EN ISO 8988:2007 Plastics - Phenolic resins - Determination of hexamethylenetetramine content - Kjeldahl method, perchloric acid method and hydrochloric acid method (ISO 8988:2006)

AENOR, nitrogen method

UNE-EN ISO 3188:1995 STARCHES AND DERIVED PRODUCTS. DETERMINATION OF NITROGEN CONTENT BY THE KJELDAHL METHOD. TITRIMETRIC METHOD. (ISO 3188:1978).
UNE 77318:2001 Soil quality. Determination of total nitrogen. Modified Kjeldahl method.
UNE-EN 12135:1998 Fruit and vegetable juices - Determination of nitrogen content - Kjeldahl method
UNE-EN 13654-1:2002 Soil improvers and growing media - Determination of nitrogen - Part 1: Modified Kjeldahl method
UNE-EN ISO 20483:2014 Cereals and pulses - Determination of the nitrogen content and calculation of the crude protein content - Kjeldahl method (ISO 20483:2013)
UNE-EN ISO 5983-1:2007 Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Part 1: Kjeldahl method (ISO 5983-1:2005)
UNE-EN ISO 8988:2007 Plastics - Phenolic resins - Determination of hexamethylenetetramine content - Kjeldahl method, perchloric acid method and hydrochloric acid method (ISO 8988:2006)
UNE 31015:1957 DETERMINATION OF NITROGEN BY LUNGE METHOD.

German Institute for Standardization, nitrogen method

DIN EN ISO 3188:1994-10 Starches and derived products - Determination of nitrogen content by the Kjeldahl method - Titrimetric method (ISO 3188:1978); German version EN ISO 3188:1994
DIN EN 12135:1997-12 Fruit and vegetable juices - Determination of nitrogen content - Kjeldahl method; German version EN 12135:1997
DIN EN ISO 5378:1994-10 Starches and derived products - Determination of nitrogen content by the Kjeldahl method - Spectrophotometric method (ISO 5378:1978); German version EN ISO 5378:1994
DIN 51722-1:1990-07 Testing of solid fuels; determination of nitrogen content; semi-micro Kjeldahl method
DIN EN ISO 20483:2014-03 Cereals and pulses - Determination of the nitrogen content and calculation of the crude protein content - Kjeldahl method (ISO 20483:2013); German version EN ISO 20483:2013
DIN EN 13654-1:2002-01 Soil improvers and growing media - Determination of nitrogen - Part 1: Modified Kjeldahl method; German version EN 13654-1:2001
DIN EN ISO 5983-1 Berichtigung 1:2009-07 Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Part 1: Kjeldahl method (ISO 5983-1:2005); German version EN ISO 5983-1:2005, Corrigendum to DIN EN ISO 5983-1:2005-10; German version EN ISO 5983-1:20...
DIN EN ISO 5983-1:2005-10 Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Part 1: Kjeldahl method (ISO 5983-1:2005); German version EN ISO 5983-1:2005
DIN EN 16169:2012 Sludge, treated biowaste and soil - Determination of Kjeldahl nitrogen; German version EN 16169:2012
DIN EN ISO 8988:2006-11 Plastics - Phenolic resins - Determination of hexamethylenetetramine content - Kjeldahl method, perchloric acid method and hydrochloric acid method (ISO 8988:2006); German version EN ISO 8988:2006
DIN EN ISO 20483:2014 Cereals and pulses - Determination of the nitrogen content and calculation of the crude protein content - Kjeldahl method (ISO 20483:2013); German version EN ISO 20483:2013

AT-ON, nitrogen method

ONORM L 1082-1999 Chemical analyses of soils - Determination of nitrogen according to Kjeldahl
ONORM M 6248-1988 Water quality; determlnation of Kjeldabl nitrogen; method ajter mineralization with selenium

国家市场监督管理总局、中国国家标准化管理委员会, nitrogen method

GB/T 6432-2018 Determination of crude protein in feeds—Kjeldahl method

International Dairy Federation (IDF), nitrogen method

IDF 20-1-2001 Milk - Determination of nitrogen content - Part 1: Kjeldahl method

PT-IPQ, nitrogen method

NP 1986-1991 Milks Determination of protein content. Kjeldahl technique
NP EN 12135-2000 Fruit and vegetable juices Determination of nitrogen content Kjeldahl method
NP 1996-2000 Cereals and pulses Determiantion of the nitrogen content and calculation of the raw protein content Kjeldhal method

GOSTR, nitrogen method

GOST 34454-2018 Dairy products. Determination of protein content by the Kjeldahl method
GOST 34536-2019 Milk and milk products. Determination of mass fraction of whey proteins by Kjeldahl method

Professional Standard - Agriculture, nitrogen method

219药典三部-2020 Content Determination Method 0704 Nitrogen Determination Method
86药典四部-2020 0700 Other determination methods 0704 Nitrogen determination method
105药典四部-2015 0700 Other determination methods 0704 Nitrogen determination method
200药典三部-2015 Content Determination Method 0704 General Principles of Nitrogen Determination Method 49
NY/T 2419-2013 Determination of total nitrogen in plant.Automatic kjeldahl apparatus method
ZB X 66038-1987 Amino nitrogen determination method
811兽药典一部-2015 Appendix Contents 0700 Other Determination Methods 0704 Nitrogen Determination Method
795兽药典二部-2015 Appendix Contents 0700 Other Determination Methods 0703 Nitrogen Determination Method
175药典三部-2010 Appendix VI VIA Nitrogen Determination Method
1789药典一部-2010 Appendix IX L Nitrogen Determination Method
2323药典二部-2010 Appendix VII D Nitrogen Determination Method
NY/T 1121.24-2012 Soil testing.Part 24:Determination of total nitrogen in soil.Automatic kjeldahl apparatus method
水产品质量安全检验手册 2.17.1.0-2005 Chapter 2 Basic Analysis Methods for Physical and Chemical Testing of Aquatic Products Section 17 Determination of Volatile Base Nitrogen in Aquatic Products (GBT 5009.44-2003) 1. Semi-trace Nitrogen Determination Method
GB 4845-1984 Nitrogen test method

IT-UNI, nitrogen method

UNI 2739-1945

Professional Standard - Tobacco, nitrogen method

YC/T 510-2014 Measurement for tobacco molecular biology.Preparation of tobacco leaf samples.Liquid nitrogen-method

European Committee for Standardization (CEN), nitrogen method

EN 16169:2012 Sludge, treated biowaste and soil - Determination of Kjeldahl nitrogen
CEN EN 13654-1-2001 Soil Improvers and Growing Media - Determination of Nitrogen - Part 1: Modified Kjeldahl Method

American Society for Testing and Materials (ASTM), nitrogen method

ASTM D3228-22 Standard Test Method for Total Nitrogen in Lubricating Oils and Fuel Oils by Modified Kjeldahl Method
ASTM E258-67(2002) Standard Test Method for Total Nitrogen in Organic Materials by Modified Kjeldahl Method
ASTM E147-61(2017) Standard Specification for Apparatus for Microdetermination of Nitrogen by Kjeldahl Method
ASTM D6556-00a Standard Test Method for Carbon Black8212;Total and External Surface Area by Nitrogen Adsorption
ASTM D6556-01a Standard Test Method for Carbon Black8212;Total and External Surface Area by Nitrogen Adsorption
ASTM D6556-01 Standard Test Method for Carbon Black8212;Total and External Surface Area by Nitrogen Adsorption
ASTM D6556-03 Standard Test Method for Carbon Black8212;Total and External Surface Area by Nitrogen Adsorption

BG-BDS, nitrogen method

BGC ISO 5983:2001 Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Kjeldahl method

Professional Standard - Business, nitrogen method

SB/T 10318-1999 Analysis of ammoniacal nitrogen

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

GJB 5381.11-2005 Methods of chemical analysis for pyrotech. Part 11: Determination of barium nitrate content. Azotometry method

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

GJB 8682.11-2015 Methods of chemical analysis of pyrotechnics Part 11: Determination of barium nitrate content and nitrogen determination method

Taiwan Provincial Standard of the People's Republic of China, nitrogen method

CNS 3572-1973 Chemical Analysis of Natural Rubber (Nitrogen)
CNS 11304-2002 Iron and steel-Methods for determination of nitrogen content
CNS 9321-1992 Method of Test for Iron in Pulp`6rortho-phenanthroline photometric method`6s}E8}E8}E8}E8
CNS 12706-1990 Method of Test for Specific Surface Area of Alumina or Quartz by Nitrogen Adsorption
CNS 14896.1-2005 Titanium and titanium alloys - Methods for determination of nitrogen content
CNS 8449-2001 Method of Test for Fertilizers: Determination of Nitrogen Content
CNS 14896-1-2005 Titanium and titanium alloys - Methods for determination of nitrogen content
CNS 3942-1976 Methods for Determination of Ammonia Nitrogen in Polluted and Waste Water
CNS 3943-1976 Method for Determination of Organic Nitrogen in Poliuted and Waste Water
CNS 3944-1976 Method for Determination of Total Kjeloahl Nitrogen in Polluted and Waste Water

ES-UNE, nitrogen method

UNE-EN ISO 5983-1:2007/AC:2009 Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Part 1: Kjeldahl method (ISO 5983-1:2005/Cor 1:2008)

SE-SIS, nitrogen method

SIS SS 18 71 63-1984 Coal - Determination of nitrogen - Macro Kjeldahl method
SIS SS 18 71 60-1983 General method for the determination of arsenic - Silver diethyldithiocarbamate photometric method

Liaoning Provincial Standard of the People's Republic of China, nitrogen method

DB21/T 616-1991 Plant total nitrogen determination method

TH-TISI, nitrogen method

TIS 2255.1-2005 Animal feeding stuff s-determination of nitrogen content and calculation of crude protein content.part 1: kjeldahl method

Ningxia Provincial Standard of the People's Republic of China, nitrogen method

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

Society of Automotive Engineers (SAE), nitrogen method

SAE AMS6496A-2013 Steel Bars, Forgings, and Tubing, Nitriding, 1.4Cr - 1.2Mo - 0.3V (0.29 - 0.36C) Aircraft-Quality for Bearing Applications
SAE AMS6475H-2004 Steel, Nitriding, Bars, Forgings, and Tubing 1.1Cr 3.5Ni 0.25Mo 1.25Al (0.21-0.26C)
SAE AMS6472E-2010 Steel Bars and Forgings, Nitriding 1.6Cr 0.35Mo 1.1Al (0.38-0.43C)(135 Mod) Hardened and Tempered, 112 ksi (772 MPa) Tensile Strength
SAE AMS6472F-2014 Steel, Bars and Forgings, Nitriding 1.6Cr - 0.35Mo - 1.1Al (0.38 - 0.43C) (135 Mod) Hardened and Tempered, 112 ksi (772 MPa) Tensile Strength

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, nitrogen method

GB/T 33317-2016 Plastics—Phenolic resins—Determination of hexamethylenetetramine content—Kjeldahl method,perchloric acid method and hydrochloric acid method

PL-PKN, nitrogen method

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

Professional Standard - Petrochemical Industry, nitrogen method

SH/T 1157.2-2015 Rubber, raw.Determination of bound acrylonitrile content in acrylonitrile-butadiene rubber (NBR).Part 2:Kjeldahl method
SH/T 0162-1992 Method for Determination of Basic Nitrogen in Petroleum Products

Professional Standard - Commodity Inspection, nitrogen method

SN/T 3470.2-2013 Rubber,raw.Determination of bound acrylonitrile content in acrylonitrile-butadiene rubber(NBR).Part 2:Kjeldahl method

ES-AENOR, nitrogen method

UNE 31 015