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Principle of Total Nitrogen Determination Method

Principle of Total Nitrogen Determination Method, Total:354 items.

In the international standard classification, Principle of Total Nitrogen Determination Method involves: Coals, External water conveyance systems, Water quality, Fertilizers, Analytical chemistry, Milk and milk products, Soil quality. Pedology, Ferrous metals, Crude petroleum, Petroleum products in general, Inorganic chemicals, General methods of tests and analysis for food products, Organic chemicals, Lubricants, industrial oils and related products, Air quality, Animal feeding stuffs, Wastes, Spices and condiments. Food additives, Refractories, Fuels, Metalliferous minerals, Fruits. Vegetables, Beverages, Farming and forestry, Products of the chemical industry, Textile fibres, Edible oils and fats. Oilseeds, Textile auxiliary materials, Ferroalloys, Cereals, pulses and derived products, Electronic tubes, Radiation measurements, Non-ferrous metals, Plastics, Powder metallurgy, Paints and varnishes, Protection of and in buildings, Cellular materials, Non-destructive testing, Laboratory medicine, Quality, Metrology and measurement in general, Products of the textile industry, Measurement of volume, mass, density, viscosity, Paint ingredients, Insulating materials, Transport, Ceramics, Particle size analysis. Sieving, Ergonomics.

Jilin Provincial Standard of the People's Republic of China, Principle of Total Nitrogen Determination Method

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

GOSTR, Principle of Total Nitrogen Determination Method

GOST R 58596-2019 Soils. Methods for determination of total nitrogen
GOST 33815-2016 Wine products and raw materials for it’s production. Method for determination of mass concentration of total and the reduced extract

Indonesia Standards, Principle of Total Nitrogen Determination Method

SNI 4146-2013
SNI 2372.2-2011 Cara uji fisika - Bagian 2: Penentuan bobot tuntas pada produk perikanan
SNI 19-7117.19-2009

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China, Principle of Total Nitrogen Determination Method

GB/T 2441.1-2001 Determination of urea-Determination of total nitrogen content
GB/T 609-1988 Chemical reagent--General method for the determination of total nitrogen
GB/T 609-2006 Chemical reagent General method for the determination of total nitrogen
GB/T 609-2018 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 21318-2009 Determination of total nirogen content in animal feeding stuffs by combustion according to the Dumas principle and calculation o the crude protein content
GB/T 24318-2009 Determination of total nitrogen content in animal feeding stuffs by combustion according to the Dumas principle and calculation of the crude protein content
GB/T 6730.24-1986 Methods for chemical analysis of iron ores--The arsenazo 3 photometric method for the determination of rare earth elements content
GB/T 23952-2009 Inorganic chemicals for industrial use.General method for the determination of total nitrogen content.Distillation-acid-base titrations method
GB/T 10209.1-2008 Determination of monoammonium phosphate and diammonium phosphate.Part 1:Total nitrogen content
GB/T 17767.1-2008 Determination of organic-inorganic compound fertilizers.Part 1:Total nitrogen content
GB/T 3257.15-1999 Methods for chemical analysis of bauxite--Determination the total content of rare earth oxide--Tribromo-arsenazo photometric method
GB/T 23772-2009 Inorganic chemicals for industrial use.General method for the determination of total nitrogen content.Nessler's reagent colorimetric method
GB/T 5543-1985 Resin finishing agent--Determination of total formaldehyde content
GB 5543-1985 Resin finishing agent－Determination of total formaldehyde content
GB/T 6609.35-2023 Methods of chemical analysis and determination of physical properties of alumina Part 35: Determination of specific surface area Nitrogen adsorption method
GB/T 6609.35-2009 Chemical analysis methods and determination of physical performance of alumina-Part 35: Determination of specific surface area by nitrogen adsorption
GB 223.49-1985 Methods for chemical analysis of iron,steel and alloy--The extraction separation-chlorophosphonazo mA photometric method for the determination of rare earth elements
GB/T 6609.4-2004 Chemical analysis methods and determination of physical performance of alumina Determination of ferric oxide content-Orthophenanthroline photometric method
GB/T 4375.5-1984 Methods for chemical analysis of gallium--The N2O-C2H2flame atomic absorption spectrophotometric method for the determination of calcium content
GB/T 6987.24-2001 Aluminium and aluminium alloys--Determination of the cerium subgroup of rare earth elements content--Tribromoarsenazo spectrophotometric method
GB/T 223.49-1994 Methods for chemical analysis of iron,steel and alloy. Extraction separation-chlorophosphonazo mA spectrophotometric method for the determination of the total rare tarth content
GB/T 6609.19-2004 Chemical analysis methods and determination of physical performance of alumina Determination of lithia content-Flame atomic absorption spectrophotometric method
GB/T 6609.20-2004 Chemical analysis methods and determination of physical performance of alumina Determination of magnesia content-Flame atomic absorption spectrophotometric method
GB/T 6609.12-2004 Chemical analysis methods and determination of physical performance of alumina Determination of zinc oxide content-Flame atomic absorption spectrophotometric method
GB/T 6609.13-2004 Chemical analysis methods and determination of physical performance of alumina Determination of calcium oxide content-Flame atomic absorption spectrophotometric method
GB/T 6609.20-2004 Methods for chemical analysis of alumina and methods for determining physical properties
GB/T 6609.11-2004 Chemical analysis methods and determination of physical performance of alumina Determination of manganous oxide content-Flame atomic absorption spectrophotometric method
GB/T 12690.17-1990 Rare-earth metals and their oxides--Determination of calcium content--Nitrous oxide-acetylene flame atomic absorption spectrometric method
GB/T 6609.19-2018 Chemical analysis methods and determination of physical performance of alumina.Part 19:Determination of lithium oxide content.Flame atomic absorption spectrometry method

RU-GOST R, Principle of Total Nitrogen Determination Method

GOST 10671.4-2016 Reagents. Methods for determination of total nitrogen impurity
GOST 30181.9-1994 Mineral fertilizers. Method for determination of total mass fraction of nitrogen in compound fertilizers (distillation method using the chromium reduction of nitrate nitrogen and mineralization of organic nitrogen)
GOST R 51423-1999 Feedstuffs, compound feeds, feed raw materials. Method for determination of soluble nitrogen fraction of total mass after treatment with pepsin in dilute hydrochloric acid
GOST EN 15750-2016 Fertilizers. Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods
GOST 2642.15-1997 Refractories and refractory raw materials. Method for determination of general carbon
GOST 2642.15-2021 Refractories and refractory raw materials. Methods for determination of general carbon
GOST 32985-2014 Solid biofuels. Determination of carbon, hydrogen and nitrogen by instrumental methods
GOST R 54216-2010 Solid biofuels. Determination of total content of carbon, hydrogen and nitrogen by instrumental methods
GOST 31950-2012 Water. Method for determination of total mercury by flameless atomic absorption spectrometry
GOST 32000-2012 The alcohol production and raw material for it producing. Method of total extract determination
GOST R 50466-1993 Fodder, mixed fodder and animal feed raw stuff. Methods of nitrogen and crude protein determination
GOST R ISO 16634-1-2011 Food products. Determination of the total nitrogen content by combustion according to the Dumas principle and calculation of the crude protein content. Part 1. Oilseeds and animal feeding stuffs
GOST 30181.4-1994 Mineral fertilizers. Method for determination of total mass fraction of nitrogen in compound fertilizers and nitrale fertilizers in ammonium and nitrate forms (Deward Method)
GOST R 51620-2000 The alcohol production and raw material for it producing. Method of total extract determination
GOST R 51212-1998 Drinking water. Methods for determination of total mercury by flameless atomic absorption spectrometry
GOST R 54285-2010 Gasoline and methanol fuels. Determionation of total oxygen content by methods of reductive pyrolysis
GOST R 54285-2010(2019) Gasoline and methanol fuels. Determionation of total oxygen content by methods of reductive pyrolysis
GOST 23327-1998 Milk and milk products. Determination of mass part of total nitrogen by Kjeldahl method and determination of mass part of protein
GOST 23327-1978 Milk. Methods for determination of the total protein content
GOST 19438.0-1980 Low powered electronic tubes. Method of measurements of parameters. General principles
GOST R 51730-2001 Drinking water. Method for determination of summary specific radio-nuclei alpha-activity
GOST 31864-2012 Drinking water. Method for determination of summary specific radio-nuclei alpha-activity
GOST 32115-2013 The alcohol production and raw material for it producing. Method for determination of free and total sulphurous acid
GOST R 51422-1999 Feedstuffs, compound feeds, feed raw materials. Method for determination of urea fraction of total mass
GOST R 52756-2007 Rectified ethanol from food raw material. Determination of volatile nitrogen bases content by method of capillary electrophoresis
GOST R 50279.10-1992 Paints and varnishes. Test methods of metal content. Determination of total lead. Flame atomic absorption spectrometric method
GOST R 50279.11-1992 Paints and varnishes. Test methods of metal content. Determination of total mercury. Flameless atomic absorption spectrometric method
GOST R 51425-1999 Feedstuffs, compound feeds, feed raw materials. Method for determination of zearalenone fraction of total mass
GOST R 51655-2000 Alcohol products and raw material for it's production. Method for determination of free and total sulphurous acid mass concentration
GOST 31707-2012 Foodstuffs. Determination of trace elements. Determination of total arsenic and selenium by hydride generation atomic absorption spectrometry (HGAAS) after pressure digestion
GOST R 55229-2012 Food additives. Colorimetric method for total phosphorus mass content determination in raw materials for citric acid production
GOST 30157.0-1995 Textile fabrics. Methods of measures changes determination after wet treatments and chemical cleaning. General
GOST R 51418-1999 Feedstuffs, compound feeds, feed raw materials. Methods for determination of ash fraction of total mass insoluble in hydrochloric acid
GOST R 56495-2015 Air transport. Safety management system of helicopter activity. Acceptable risk. Principles and methods of determination. Basic provisions
GOST R 50279.8-1992 Paints and varnishes. Test methods of metal content. Determination of total "soluble" chromium content of the liquid portion of paint. Flame atomic absorbtion spectrometric method

Standard Association of Australia （SAA）, Principle of Total Nitrogen Determination Method

AS 2300.1.2.2:1988 Methods of chemical and physical testing for the dairying industry - General methods and principles - Determination of nitrogen - Nitrogen fractions from milk
AS 2300.1.2.2:2008 Methods of chemical and physical testing for the dairying industry Method 1.2.2: General methods and principles- Determination of nitrogen—Nitrogen fractions from milk
AS 2300.1.2.1:1991 Methods of chemical and physical testing for the dairying industry - General methods and principles - Determination of nitrogen - Reference Kjeldahl method
AS 2300.1.1:1988 Methods of chemical and physical testing for the dairying industry - General methods and principles - Determination of total solids and moisture
AS 2300.1.1:2008
AS 2300.1.3:1988 Methods of chemical and physical testing for the dairying industry - General methods and principles - Determination of fat - Gravimetric method
AS 2300.1.5:1988 Methods of chemical and physical testing for the dairying industry - General methods and principles - Determination of ash
AS 2300.1.6:1989 Methods of chemical and physical testing for the dairying industry - General methods and principles - Determination of pH
AS 2300.1.10:2008 Methods of chemical and physical testing for the dairying industry Method 1.10: General methods and principles— Determination of phosphatase activity
AS 2300.2.10:1988 Methods of chemical and physical testing for the dairying industry - Liquid milks - Determination of titratable acidity
AS 2300.1.6:2010
AS 2300.2.7:1988 Methods of chemical and physical testing for the dairying industry - Liquid milks - Determination of calcium
AS 2300.2.8:1988 Methods of chemical and physical testing for the dairying industry - Liquid milks - Determination of chloride
AS 2300.2.9:1988 Methods of chemical and physical testing for the dairying industry - Liquid milks - Determination of phosphorus
AS 2300.1.3:2008
AS 2300.1.5:2008
AS 2300.1.10:1988 Methods of chemical and physical testing for the dairying industry - General methods and principles - Determination of phosphatase activity
AS 2300.2.6:1988 Methods of chemical and physical testing for the dairying industry - Liquid milks - Determination of lactose
AS 2300.5.3:1991 Methods of chemical and physical testing for the dairying industry - Condensed milk - Determination of total milk solids
AS 2300.1.9:2008 Methods of chemical and physical testing for the dairying industry Method 1.9: General methods and principles— Determination of sucrose and glucose— Enzymatic method
AS 2300.1.9:1987 Methods of chemical and physical testing for the dairying industry - General methods and principles - Determination of sucrose and glucose - Enzymatic method
AS 2300.1.4.2:1988 Methods of chemical and physical testing for the dairying industry - General methods and principles - Determination of fat content of milk and liquid dairy products by the Babcock method - Methodology
AS 2300.2.3:1981 Methods of chemical and physical testing for the dairying industry - Liquid milks - Determination of the iodide content of milk - Selective ion electrode method
AS 2300.1.7:1990 Methods of chemical and physical testing for the dairying industry - General methods and principles - Determination of extraneous matter in dairy products
AS 2365.1.1:1990 Methods for the sampling and analysis of indoor air - Determination of nitrogen dioxide - Spectrophotometric method - Treated mesh/passive tube sampling procedures

British Standards Institution (BSI), Principle of Total Nitrogen Determination 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)
BS 5551-4.1.3:1986 Fertilizers. Chemical analysis. Determination of nitrogen. Method for determination of total nitrogen content (titrimetric method after distillation)
BS ISO 20620:2021 Fertilizers and soil conditioners. Determination of total nitrogen by combustion
BS 4267-2:1988 Ammonium nitrate - Method for determination of total nitrogen content
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 DD CEN/TS 15104:2006 Solid biofuels - Determination of total content of carbon, hydrogen and nitrogen - Instrumental methods
BS DD CEN/TS 15104:2005 Solid biofuels — Determination of total content of carbon, hydrogen and nitrogen — Instrumental methods
BS EN ISO 14891:2002 Milk and milk products - Determination of nitrogen content - Routine method using combustion according to the Dumas principle
BS 7020-4.2:1990 Analysis of iron ores. Method for the determination of total iron content. Titanium (III) chloride reduction methods
BS EN ISO 16634-1:2008 Food products - Determination of the total nitrogen content by combustion according to the Dumas principle and calculation of the crude protein content - Part 1: Oilseeds and animal feeding stuffs
BS 5551-4.1.4:1984 Fertilizers. Chemical analysis. Determination of nitrogen. Method for determination of ammoniacal nitrogen content in the presence of other substances which release ammonia when treated with sodium hydroxide (titrimetric method)
BS 6068-2.40:1991 Water quality. Physical, chemical and biochemical methods. Method for the determination of borate by spectrometry using azomethine-H
BS DD CEN ISO/TS 16634-2:2010 Food products - Determination of the total nitrogen content by combustion according to the Dumas principle and calculation of the crude protein content - Cereals, pulses and milled cereal products
BS ISO 2597-2:2015 Iron ores. Determination of total iron content. Titrimetric methods after titanium(III) chloride reduction
BS ISO 2597-2:2008 Iron ores - Determination of total iron content - Titrimetric methods after titanium(III) chloride reduction
BS EN 16168:2012 Sludge, treated biowaste and soil. Determination of total nitrogen using dry combustion method
BS 5551-3.4:1987 Fertilizers. Physical properties. Method for determination of oil retention of high nitrogen content, straight ammonium nitrate fertilizers
BS 874-1:1986 Methods for determining thermal insulating properties - Introduction, definitions and principles of measurement
BS ISO 2597-2:2019 Tracked Changes. Iron ores. Determination of total iron content. Titrimetric methods after titanium(III) chloride reduction
BS 6068-2.42:1993 Water quality. Physical, chemical and biochemical methods. Determination of sodium and potassium: determination of sodium by atomic absorption spectrometry
BS 6068-2.43:1993 Water quality. Physical, chemical and biochemical methods. Determination of sodium and potassium: determination of potassium by atomic absorption spectrometry
DD ENV 14226:2002 Advanced technical ceramics. Test methods for ceramic powders. Determination of calcium, magnesium, iron and aluminium in silicon nitride by using flame atomic absorption spectroscopy (FAAS) or inductively coupled plasma atomic emission spectroscopy (I...
BS 7020 Sec.4.2:1990 Analysis of iron ores. Method for the determination of total iron content. Titanium (III) chloride reduction methods
BS 3900-D8:1986 Methods of test for paints. Optical tests on paint films. Determination of colour and colour difference: principles
BS EN ISO 16634-2:2016 Tracked Changes. Food products. Determination of the total nitrogen content by combustion according to the Dumas principle and calculation of the crude protein content. Cereals, pulses and milled cereal products
BS 6829-2.1:1988 Analysis of surface active agents (raw materials) - Alkane sulphonates - Method for determination of total alkaline sulphonates content
BS 5766-15:1997 Methods for analysis of animal feeding stuffs. Determination of soluble nitrogen content after treatment with pepsin in dilute hydrochloric acid
BS 6068-2.17:1986 Water quality - Physical, chemical and biochemical methods - Methods for determination of total cyanide
BS 5551 SubSec.4.1.4:1984 Fertilizers. Chemical analysis. Determination of nitrogen. Method for determination of ammoniacal nitrogen content in the presence of other substances which release ammonia when treated with sodium hydroxide (titrimetric method)
BS EN 50414:2006 Test methods for analysis of lead in PVC taken from insulation and sheath of electric and optical fibre cables - Method A: Total lead content determination with flame excitation atomic absorption spectrometry - Method B: Qualitative analysis of lead by le
BS 6068 Sec.2.42:1993 Water quality. Physical, chemical and biochemical methods. Determination of sodium and potassium: determination of sodium by atomic absorption spectrometry
BS 6068 Sec.2.43:1993 Water quality. Physical, chemical and biochemical methods. Determination of sodium and potassium: determination of potassium by atomic absorption spectrometry
BS 5551 Sec.3.4:1987 Fertilizers. Physical properties. Method for determination of oil retention of high nitrogen content, straight ammonium nitrate fertilizers
BS DD ENV 14226:2002 Advanced technical ceramics - Test methods for ceramic powders - Determination of calcium, magnesium, iron and aluminium in silicon nitride by using flame atomic absorption spectroscopy (FAAS) or inductively coupled plasma atomic emission spectroscopy (IC

Association Francaise de Normalisation, Principle of Total Nitrogen Determination Method

NF A06-555:2010 Steel - Determination of nitrogen content - Spectrophotometric method.
NF EN ISO 14891:2003 Lait et produits laitiers - Détermination de la teneur en azote - Méthode pratique par combustion selon le principe de Dumas
NF U42-503*NF EN 15750:2010 Fertilizers - Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods
NF EN 15750:2010 Engrais - Détermination de la teneur en azote total des engrais ne contenant l'azote que sous forme nitrique, ammoniacale et uréique, selon deux méthodes différentes
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 16168:2012 Boues, biodéchets traités et sols - Détermination de la teneur totale en azote par combustion sèche
NF V04-396*NF EN ISO 14891:2003 Milk and milk products - Determination of nitrogen content - Routine method using combustion according to the Dumas principle.
NF X31-036*NF EN 16168:2012 Sludge, treated biowaste and soil - Determination of total nitrogen using dry combustion method.
NF EN ISO 16634-1:2008 Produits alimentaires - Détermination de la teneur en azote total par combustion selon le principe Dumas et calcul de la teneur en protéines brutes - Partie 1 : graines oléagineuses et aliments des animaux
NF X31-505:1992 Soil quality - Physical methods - Method for determining the bulk volume and the water content of lumps of earth
NF V03-767-1*NF EN ISO 16634-1:2008 Food products - Determination of the total nitrogen content by combustion according to the Dumas principle and calculation of the crude protein content - Part 1 : oilseeds and animal feeding stuffs.
NF V03-767-2*NF EN ISO 16634-2:2016 Food products - Determination of the total nitrogen content by combustion according to the Dumas principle and calculation of the crude protein content - Part 2 : cereals, pulses and milled cereal products
NF EN 50414:2006 Méthodes d'analyse du plomb dans le PVC prélevé de l'enveloppe isolante et des gaines des câbles électriques et à fibres optiques - Méthode A : détermination de la teneur totale en plomb par spectrométrie atomique d'absorption dans la flamm...
NF X35-300-3*NF EN ISO 10075-3:2005 Ergonomic principles related to mental workload - Part 3 : principles and requirements concerning methods for measuring and assessing mental workload.

Hebei Provincial Standard of the People's Republic of China, Principle of Total Nitrogen Determination Method

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

Professional Standard - Agriculture, Principle of Total Nitrogen Determination Method

GB 609-1988 General method for the determination of total nitrogen content of chemical reagents
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

American Society for Testing and Materials (ASTM), Principle of Total Nitrogen Determination Method

ASTM D8001-16e1 Standard Test Method for Determination of Total Nitrogen, Total Kjeldahl Nitrogen by Calculation, and Total Phosphorus in Water, Wastewater by Ion Chromatography
ASTM D8001-16 Standard Test Method for Determination of Total Nitrogen, Total Kjeldahl Nitrogen by Calculation, and Total Phosphorus in Water, Wastewater by Ion Chromatography
ASTM E258-67(2002) Standard Test Method for Total Nitrogen in Organic Materials by Modified Kjeldahl Method
ASTM D3228-22 Standard Test Method for Total Nitrogen in Lubricating Oils and Fuel Oils by Modified Kjeldahl Method
ASTM E258-67(1996)e1 Standard Test Method for Total Nitrogen in Organic Materials by Modified Kjeldahl Method
ASTM D6556-10 Standard Test Method for Carbon Black-Total and External Surface Area by Nitrogen Adsorption
ASTM D6556-04 Standard Test Method for Carbon Black-Total and External Surface Area by Nitrogen Adsorption
ASTM 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 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 D6556-17 Standard Test Method for Carbon Black&x2014;Total and External Surface Area by Nitrogen Adsorption
ASTM D6556-07 Standard Test Method for Carbon Black-Total and External Surface Area by Nitrogen Adsorption
ASTM D6556-03 Standard Test Method for Carbon Black8212;Total and External Surface Area by Nitrogen Adsorption
ASTM D3228-20 Standard Test Method for Total Nitrogen in Lubricating Oils and Fuel Oils by Modified Kjeldahl Method
ASTM D6556-02 Standard Test Method for Carbon Black8212;Total and External Surface Area by Nitrogen Adsorption
ASTM D6556-02a Standard Test Method for Carbon Black8212;Total and External Surface Area by Nitrogen Adsorption
ASTM D6556-09 Standard Test Method for Carbon Black-Total and External Surface Area by Nitrogen Adsorption
ASTM D3228-19 Standard Test Method for Total Nitrogen in Lubricating Oils and Fuel Oils by Modified Kjeldahl Method
ASTM D6556-21 Standard Test Method for Carbon Black—Total and External Surface Area by Nitrogen Adsorption
ASTM D3228-08(2019) Standard Test Method for Total Nitrogen in Lubricating Oils and Fuel Oils by Modified Kjeldahl Method
ASTM E258-07 Standard Test Method for Total Nitrogen in Organic Materials by Modified Kjeldahl Method
ASTM D6556-14 Standard Test Method for Carbon Blackmdash;Total and External Surface Area by Nitrogen Adsorption
ASTM D3228-96 Standard Test Method for Total Nitrogen In Lubricating Oils and Fuel Oils By Modified Kjeldahl Method
ASTM D3228-01 Standard Test Method for Total Nitrogen In Lubricating Oils and Fuel Oils By Modified Kjeldahl Method
ASTM D3228-05 Standard Test Method for Total Nitrogen in Lubricating Oils and Fuel Oils by Modified Kjeldahl Method
ASTM D322-97(2002)e1 Standard Test Method for Gasoline Diluent in Used Gasoline Engine Oils by Distillation
ASTM D3228-03 Standard Test Method for Total Nitrogen in Lubricating Oils and Fuel Oils by Modified Kjeldahl Method
ASTM D3228-08 Standard Test Method for Total Nitrogen in Lubricating Oils and Fuel Oils by Modified Kjeldahl Method
ASTM D322-97(2016) Standard Test Method for Gasoline Diluent in Used Gasoline Engine Oils by Distillation
ASTM D5176-91(2003) Standard Test Method for Total Chemically Bound Nitrogen in Water by Pyrolysis and Chemiluminescence Detection
ASTM D5176-91(1995) Standard Test Method for Total Chemically Bound Nitrogen in Water by Pyrolysis and Chemiluminescence Detection
ASTM D5176-08 Standard Test Method for Total Chemically Bound Nitrogen in Water by Pyrolysis and Chemiluminescence Detection
ASTM D5176-08(2015) Standard Test Method for Total Chemically Bound Nitrogen in Water by Pyrolysis and Chemiluminescence Detection
ASTM D8247-19 Standard Test Method for Determination of Total Fluorine and Total Chlorine in Coal by Oxidative Pyrohydrolytic Combustion Followed by Ion Chromatography Detection
ASTM D3228-08(2014) Standard Test Method for Total Nitrogen in Lubricating Oils and Fuel Oils by Modified Kjeldahl Method
ASTM D6556-16 Standard Test Method for Carbon Black&x2014;Total and External Surface Area by Nitrogen Adsorption
ASTM D7623-20 Standard Test Method for Total Mercury in Crude Oil Using Combustion-Gold Amalgamation and Cold Vapor Atomic Absorption Method
ASTM D7623-10(2015) Standard Test Method for Total Mercury in Crude Oil Using Combustion-Gold Amalgamation and Cold Vapor Atomic Absorption Method
ASTM D3684-01 Standard Test Method for Total Mercury in Coal by the Oxygen Bomb Combustion/Atomic Absorption Method
ASTM D3684-94(2000) Standard Test Method for Total Mercury in Coal by the Oxygen Bomb Combustion/Atomic Absorption Method
ASTM D3684-01(2006) Standard Test Method for Total Mercury in Coal by the Oxygen Bomb Combustion/Atomic Absorption Method
ASTM D4661-23 Standard Test Methods for Polyurethane Raw Materials: Determination of Total Chlorine in Isocyanates
ASTM D4468-85(2011) Standard Test Method for Total Sulfur in Gaseous Fuels by Hydrogenolysis and
Rateometric Colorimetry
ASTM D5622-95(2000) Standard Test Methods for Determination of Total Oxygen in Gasoline and Methanol Fuels by Reductive Pyrolysis
ASTM D5622-17 Standard Test Methods for Determination of Total Oxygen in Gasoline and Methanol Fuels by Reductive Pyrolysis
ASTM D4661-98 Standard Test Methods for Polyurethane Raw Materials Determination of Total Chlorine in Isocyanates
ASTM D4661-18 Standard Test Methods for Polyurethane Raw Materials: Determination of Total Chlorine in Isocyanates
ASTM D4661-13 Standard Test Methods for Polyurethane Raw Materials: Determination of Total Chlorine in Isocyanates
ASTM D4468-85(2000) Standard Test Method for Total Sulfur in Gaseous Fuels by Hydrogenolysis and Rateometric Colorimetry
ASTM D4468-85(2015) Standard Test Method for Total Sulfur in Gaseous Fuels by Hydrogenolysis and Rateometric Colorimetry
ASTM D6979-13 Standard Test Method for Polyurethane Raw Materials: Determination of Basicity in Polyols, Expressed as Percent Nitrogen
ASTM D7622-20 Standard Test Method for Total Mercury in Crude Oil Using Combustion and Direct Cold Vapor Atomic Absorption Method with Zeeman Background Correction
ASTM D7622-10(2015) Standard Test Method for Total Mercury in Crude Oil Using Combustion and Direct Cold Vapor Atomic Absorption Method with Zeeman Background Correction
ASTM D6979-18 Standard Test Method for Polyurethane Raw Materials: Determination of Basicity in Polyols, Expressed as Percent Nitrogen
ASTM D5622-95(2005) Standard Test Methods for Determination of Total Oxygen in Gasoline and Methanol Fuels by Reductive Pyrolysis
ASTM D5622-95(2011) Standard Test Methods for Determination of Total Oxygen in Gasoline and Methanol Fuels by Reductive Pyrolysis
ASTM D5622-16 Standard Test Methods for Determination of Total Oxygen in Gasoline and Methanol Fuels by Reductive Pyrolysis
ASTM D4517-04(2009) Standard Test Method for Low-Level Total Silica in High-Purity Water by Flameless Atomic Absorption Spectroscopy
ASTM D6069-01(2006) Standard Test Method for Trace Nitrogen in Aromatic Hydrocarbons by Oxidative Combustion and Reduced Pressure Chemiluminescence Detection
ASTM D6069-96 Standard Test Method for Trace Nitrogen in Aromatic Hydrocarbons by Oxidative Combustion and Reduced Pressure Chemiluminescence Detection
ASTM D6069-01 Standard Test Method for Trace Nitrogen in Aromatic Hydrocarbons by Oxidative Combustion and Reduced Pressure Chemiluminescence Detection
ASTM D6979-03 Standard Test Method for Polyurethane Raw Materials: Determination of Basicity in Polyols, Expressed as Percent Nitrogen
ASTM D6979-08 Standard Test Method for Polyurethane Raw Materials: Determination of Basicity in Polyols, Expressed as Percent Nitrogen
ASTM C1514-08 Standard Test Method for Measurement of ²³⁵U Fraction Using Enrichment Meter Principle
ASTM E607-90(1996) Standard Test Method for Optical Emission Spectrometric Analysis of Aluminum and Aluminum Alloys by the Point-to-Plane Technique, Nitrogen Atmosphere
ASTM E607-02 Standard Test Method for Atomic Emission Spectrometric Analysis Aluminum Alloys by the Point to Plane Technique Nitrogen Atmosphere
ASTM D4517-85(1999) Standard Test Method for Low-Level Total Silica in High-Purity Water by Flameless Atomic Absorption Spectroscopy
ASTM D4517-15(2023) Standard Test Method for Low-Level Total Silica in High-Purity Water by Flameless Atomic Absorption Spectroscopy
ASTM E1081-95a Standard Test Method for Determination of Total Iron in Iron Ores and Related Materials by Silver Reduction-Dichromate Titration (Withdrawn 2002)
ASTM D4661-03 Standard Test Methods for Polyurethane Raw Materials: Determination of Total Chlorine in Isocyanates

CZ-CSN, Principle of Total Nitrogen Determination Method

CSN 65 4836-1983 Minerál fertilizers Methode for determination of total nitrogen content
CSN 58 0703-7-1999 Testing methods of dehydrated products and seasonings - Part 7: Determinaton of total nitrogen
CSN ISO 9507:1993 Iron ores. Determination of total iron content. Titanium (III) chloride reduction methods
CSN 46 7092-5-1998 Testing methods for feeding stuffs - Part 5: Determination of soluble nitrogen content after treatment with pepsin in hydrochloric acid solution

Japanese Industrial Standards Committee (JISC), Principle of Total Nitrogen Determination Method

JIS K 2609:1990 Crude petroleum and petroleum products -- Determination of nitrogen content
JIS K 0400-66-20:1998 Water quality -- Determination of total mercury by flameless atomic absorption spectrometry -- Part 2: Method after pretreatment with ultraviolet radiation
JIS Z 8402-1:1999 Accuracy (trueness and precision) of measurement methods and results -- Part 1: General principles and definitions
JIS K 0400-66-30:1998 Water quality -- Determination of total mercury by flameless atomic absorption spectrometry -- Part 3: Method after digestion with bromine

German Institute for Standardization, Principle of Total Nitrogen Determination Method

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 16168:2012-11 Sludge, treated biowaste and soil - Determination of total nitrogen using dry combustion method; German version EN 16168:2012
DIN 51732:2014-07 Testing of solid mineral fuels - Determination of total carbon, hydrogen and nitrogen - Instrumental methods
DIN EN ISO 14891:2002-07 Milk and milk products - Determination of nitrogen content - Routine method using combustion according to the Dumas principle (ISO 14891:2002); German version EN ISO 14891:2002
DIN 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 EN 15104:2011 Solid biofuels - Determination of total content of carbon, hydrogen and nitrogen - Instrumental methods; German version EN 15104:2011
DIN EN ISO 8968-1:2014 Milk and milk products - Determination of nitrogen content - Part 1: Kjeldahl principle and crude protein calculation (ISO 8968-1:2014); German version EN ISO 8968-1:2014
DIN EN ISO 16634-1:2009 Food products - Determination of the total nitrogen content by combustion according to the Dumas principle and calculation of the crude protein content - Part 1: Oilseeds and animal feeding stuffs (ISO 16634-1:2008); English version of DIN EN ISO 16634-1:
DIN EN ISO 16634-1:2009-07 Food products - Determination of the total nitrogen content by combustion according to the Dumas principle and calculation of the crude protein content - Part 1: Oilseeds and animal feeding stuffs (ISO 16634-1:2008); German version EN ISO 16634-1:2008
DIN EN 16168:2012 Sludge, treated biowaste and soil - Determination of total nitrogen using dry combustion method; German version EN 16168:2012
DIN 51900-1:2000-04 Testing of solid and liquid fuels - Determination of gross calorific value by the bomb calorimeter and calculation of net calorific value - Part 1: Principles, apparatus, methods / Note: To be replaced by DIN 51900 (2022-06).
DIN-Fachbericht 143:2005 Modern rheological test methods - Part 1: Determination of the yield point - Fundamentals and comparative testing methods
DIN EN ISO 16634-2:2016-11 Food products - Determination of the total nitrogen content by combustion according to the Dumas principle and calculation of the crude protein content - Part 2: Cereals, pulses and milled cereal products (ISO 16634-2:2016); German version EN ISO 16634...
DIN 51900-1:2000 Testing of solid and liquid fuels - Determination of gross calorific value by the bomb calorimeter and calculation of net calorific value - Part 1: Principles, apparatus, methods
DIN 51001 Bb.1:2010 Testing of oxidic raw materials and basic materials - General bases of work for X-Ray fluorescence method (XRF) - General survey on disintegration methods referred to groups of materials for the determination of test specimens for XRF
DIN 51001 Bb.1:2003 Testing of oxidic raw materials and basic materials - General bases of work for X-ray fluorescence method (XRF) - General survey on disintegration methods referred to groups of materials for the determination of test specimens for XRF

Korean Agency for Technology and Standards (KATS), Principle of Total Nitrogen Determination Method

KS M ISO 6851-2002(2022) 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 2112-2011 Crude petroleum and petroleum products-Determination of nitrogen content
KS M 9102-1996(2001) WATER QUALITY-DETERMINATION OF TOTAL MERCURY BY FLAMELESS ATOMIC ABSORPTION SPECTROMETRY(METHOD AFTER PRETREATMENT WITH ULTRAVIOLET RADITION)
KS E ISO 10213-2011(2016) Aluminium ores－Determination of total iron content－Titanium trichloride reduction method
KS M 9102-1996 Water quality-Determination of total mercury by flameless atomic absorption spectrometry(Method after pretreatment with ultraviolet radiation)
KS D ISO 4491-4-2003(2018) Metallic powders - Determination of oxygen content by reduction methods Part 4 : Total oxygen by reduction-extraction
KS M 9103-1996(2001) WATER QUALITY- DETERMINATION OF TOTAL MERCURY BY FLAMELESS ATOMIC ABSORPTION SPECTROMERTY(METHOD AFTER DIGESTION WITH BROMIN)
KS E ISO 2597-2:2009 Iron ores－Determination of total iron content－Part 2：Titrimetric methods after titanium(III) chloride reduction
KS A ISO 5725-1:2012 Accuracy(trueness and precision) of measurement methods and results-Part 1:General principles and definitions
KS L ISO 21068-3-2012(2017) Chemical analysis of silicon-carbide-containing raw materials and refractory products－Part 3：Determination of nitrogen, oxygen and metallic and oxidic constituents
KS A ISO 13318-1:2014 Determination of particle size distribution by centrifugal liquid sedimentation methods — Part 1: General principles and guidelines
KS A ISO 13318-1:2003 Determination of particle size distribution by centrifugal liquid sedimentation methods-Part 1:General principles and guidelines

ES-AENOR, Principle of Total Nitrogen Determination Method

PH-BPS, Principle of Total Nitrogen Determination Method

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

AENOR, Principle of Total Nitrogen Determination Method

UNE 84047:1995 COSMETIC RAW MATERIALS. DETERMINATION OF NITROGEN. KJEDHAL'S METHOD (SEMI-MICRO).
UNE 34080:1974 ANALYSIS METHODS FOR CHOCOLATES. DETERMINATION OF TOTAL NITROGEN. (PROTEINS).
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 ISO 14891:2002 Milk and milk products - Determination of nitrogen content - Routine method using combustion according to the Dumas principle. (ISO 14891:2002)
UNE-EN ISO 16634-1:2009 Food products - Determination of the total nitrogen content by combustion according to the Dumas principle and calculation of the crude protein content - Part 1: Oilseeds and animal feeding stuffs (ISO 16634-1:2008)
UNE 55581:1980 SURFACE ACTIVE AGENTS. SODIUM CARBONATE FOR USE AS RAW-MATERIAL IN DETERGENT FORMULATIONS. DETERMINATION OF TOTAL SOLUBLE ALKALINITY. TITRIMETRIC METHOD
UNE 53985-4:2004 Plastics. Test methods for polyurethane raw materials. Polyols. Part 4: Determination of total unsaturation.
UNE 55627:1983 SURFACE ACTIVE AGENTS. SODIUM AND POTASSIUM SILICATES TO BE USED AS RAW-MATERIALS IN DETERGENT FORMULATIONS. DETERMINATION OF TOTAL ALKALINITY. TITRIMETRIC METHOD

VN-TCVN, Principle of Total Nitrogen Determination Method

TCVN 3705-1990 Aquatic products.Method for the determination of total nitrogen and protein content
TCVN 7113-3-2011 Ergonomic principles related to mental workload.Principles and requirements concerning methods for measuring and assessing mental workload

未注明发布机构, Principle of Total Nitrogen Determination Method

BS 4267-2:1988(1999) Ammonium nitrate — Part 2 : Method for determination of total nitrogen content
BS 6068-2.17:1986(2011) Water quality — Part 2 : Physical, chemical and biochemical methods — Section 2.17 Methods for determination of total cyanide
BS 3406-5:1983(1999) Methods for Determination of particle size distribution — Part 5 : Recommendations for electrical sensing zone method (the Coulter principle)

Danish Standards Foundation, Principle of Total Nitrogen Determination Method

DS/EN 15750:2010 Fertilizers - Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods
DS/EN 16168:2013 Sludge, treated biowaste and soil - Determination of total nitrogen using dry combustion method
DS/EN ISO 14891:2002 Milk and milk products - Determination of nitrogen content - Routine method using combustion according to the Dumas principle
DS/ISO 29441:2010 Water quality - Determination of total nitrogen after UV digestion - Method using flow analysis (CFA and FIA) and spectrometric detection
DS/EN ISO 16634-1:2009 Food products - Determination of the total nitrogen content by combustion according to the Dumas principle and calculation of the crude protein content - Part 1: Oilseeds and animal feeding stuffs
DS/CEN ISO/TS 16634-2:2009 Food products - Determination of the total nitrogen content by combustion according to the Dumas principle and calculation of the crude protein content - Part 2: Cereals, pulses and milled cereal products

Lithuanian Standards Office , Principle of Total Nitrogen Determination Method

LST EN 15750-2010 Fertilizers - Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods
LST EN 16168-2012 Sludge, treated biowaste and soil - Determination of total nitrogen using dry combustion method
LST EN ISO 14891:2003 Milk and milk products - Determination of nitrogen content - Routine method using combustion according to the Dumas principle (ISO 14891:2002)
LST EN ISO 16634-1:2009 Food products - Determination of the total nitrogen content by combustion according to the Dumas principle and calculation of the crude protein content - Part 1: Oilseeds and animal feeding stuffs (ISO 16634-1:2008)

European Committee for Standardization (CEN), Principle of Total Nitrogen Determination Method

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 ISO 14891:2002 Milk and Milk Products - Determination of Nitrogen Content - Routine Method Using Combustion According to the Dumas Principle
EN 15750:2009 Fertilizers - Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods
EN 16168:2012 Sludge, treated biowaste and soil - Determination of total nitrogen using dry combustion method
EN ISO 8968-4:2016 Milk and milk products - Determination of nitrogen content - Part 4: Determination of protein and non-protein nitrogen content and true protein content calculation (Reference method)
EN ISO 16634-1:2008 Food products - Determination of the total nitrogen content by combustion according to the Dumas principle and calculation of the crude protein content - Part 1: Oilseeds and animal feeding stuffs (ISO 16634-1:2008)
CEN ISO/TS 16634-2:2009 Food products - Determination of the total nitrogen content by combustion according to the Dumas principle and calculation of the crude protein content - Part 2: Cereals, pulses and milled cereal products
EN ISO 16634-2:2016 Food products - Determination of the total nitrogen content by combustion according to the Dumas principle and calculation of the crude protein content - Part 2: Cereals@ pulses and milled cereal products
prEN 25666-2-1992 Water quality; determination of total mercury by flameless atomic absorption spectrometry; part 2: method after pretreatment with ultraviolet radiation (ISO 5666-2:1983)
DD ENV 14226-2002 Advanced technical ceramics - Test methods for ceramic powders - Determination of calcium, magnesium, iron and aluminium in silicon nitride by using flame atomic absorption spectroscopy (FAAS) or inductively coupled plasma atomic emission spectroscopy (IC

Association of German Mechanical Engineers, Principle of Total Nitrogen Determination Method

VDI 2456-2004 Stationary source emissions - Reference method for determination of the sum of nitrogen monoxide and nitrogen dioxide - Ion chromatography method

Professional Standard - Urban Construction, Principle of Total Nitrogen Determination Method

CJ 26.27-1991 Municipal sewage water quality inspection method standard Determination of total nitrogen Titration method after distillation

IN-BIS, Principle of Total Nitrogen Determination Method

International Dairy Federation (IDF), Principle of Total Nitrogen Determination Method

IDF 185-2002 Milk and milk products - Determination of nitrogen content - Routine method using combustion according to the Dumas principle

International Organization for Standardization (ISO), Principle of Total Nitrogen Determination Method

ISO 14891:2002 | IDF 185:2002 Milk and milk products — Determination of nitrogen content — Routine method using combustion according to the Dumas principle
ISO 14891:2002 Milk and milk products - Determination of nitrogen content - Routine method using combustion according to the Dumas principle
ISO 14891:2002|IDF 185:2002 Determination of nitrogen content in milk and milk products using the conventional combustion method according to the Dumas principle
ISO 20921:2019 Textiles — Determination of stable nitrogen isotope ratio in cotton fibres
ISO 4491-4:2019 Metallic powders — Determination of oxygen content by reduction methods — Part 4: Total oxygen by reduction-extraction
ISO 16634-1:2008 Food products - Determination of the total nitrogen content by combustion according to the Dumas principle and calculation of the crude protein content - Part 1: Oilseeds and animal feeding stuffs
ISO 2597-2:2008 Iron ores - Determination of total iron content - Part 2: Titrimetric methods after titanium(III)chloride reduction
ISO 2597-2:2015 Iron ores - Determination of total iron content - Part 2: Titrimetric methods after titanium(III) chloride reduction
ISO 5666-2:1983 Water quality; Determination of total mercury by flameless atomic absorption spectrometry; Part 2: Method after pretreatment with ultraviolet radiation
ISO/CD TR 20659-1:2023 Rheological test methods — Fundamentals and interlaboratory comparisons — Part 1: Determination of the yield point
ISO/DTR 20659-1:2023 Rheological test methods — Fundamentals and interlaboratory comparisons — Part 1: Determination of the yield point
ISO 10075-3:2004 Ergonomic principles related to mental workload - Part 3: Principles and requirements concerning methods for measuring and assessing mental workload

ES-UNE, Principle of Total Nitrogen Determination Method

UNE-EN 16168:2012 Sludge, treated biowaste and soil - Determination of total nitrogen using dry combustion method (Endorsed by AENOR in October of 2012.)
UNE-EN ISO 16634-2:2016 Food products - Determination of the total nitrogen content by combustion according to the Dumas principle and calculation of the crude protein content - Part 2: Cereals, pulses and milled cereal products (ISO 16634-2:2016)

Professional Standard - Aviation, Principle of Total Nitrogen Determination Method

HB 5218.14-1995 Aluminum Alloy Chemical Analysis Method Tribromoarsine Spectrophotometric Determination of Total Rare Earth in Cerium Group
HB/Z 5218.14-2004 Methods for chemical analysis of aluminium alloys-Part 14:Determination of the cerium subgroup of rare earth elements content by tribromoarsenazo spectrophtometric method
HB 5220.39-1995 Chemical Analysis Method of Superalloys PMBP Direct Extraction-ArsenazoⅢ Absorbance Spectrophotometry Determination of Total Rare Earth
HB 7064.6-1994 Method of chemical analysis in salt bath for heat treatment of metals - Determination of total alkalinity by acid-base titration
HB 5220.39-2008 Methods for chemical analysis of superalloys. Part 39: Determination of total rare earth content by PMBP direct extraction-arsenazo Ⅲ photometric 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, Principle of Total Nitrogen Determination Method

GB/T 35905-2018 Test methods for biomass—Determination of total solids in biomass
GB/T 33208-2016 Non-destructive testing—Practice for the blades on-line monitoring based on tip-timing theory
GB/T 35812-2018 Method for analysis of forestry biomass—Determination of insoluble solids following pretreatment

AT-ON, Principle of Total Nitrogen Determination Method

ONORM ISO 5666 Teil.2:1984 Water quality; determination of total mercury by flameless atomic absorption spectrometry; method after pretreatment with ultraviolett radiation
ONORM ISO 5666 Teil.1:1984 Water quality; determination of total mercury by flameless atomic absorption spectrometry; method after digestion with permangana te-peroxodisulfa te

Professional Standard - Non-ferrous Metal, Principle of Total Nitrogen Determination Method

YS/T 587.15-2023 Calcined coke for prebaked blocks— Part 15: Determination of total carbon,hydrogen and nitrogen contents
YS/T 575.14-2006 Chemical analysis method of bauxite ore-tribromoarsine spectrophotometric determination of total rare earth oxides
YS/T 520.5-2006 Gallium Chemical Analysis Method for Determination of Calcium by Nitrous Oxide-Acetylene Flame Atomic Absorption Spectrophotometry
YS/T 575.14-2007 Methods for chemical analysis of bauxite.Part 14:Determination the total content of rare earth oxide.Tribromo-arsenazo photometric method
YS/T 581.7-2006 Determination of chemical contents and physical properties of aluminium fluoride Part 7:Determination of iron content by orthophenantholine photometric method
YS/T 273.7-2006 Chemical analysis methods and physical properties of cryolite. Part 7:Determination of iron content by orthophenantholine photometric method
YS/T 520.5-2007 Chemical analysis of gallium.Part 5: Determination of calcium content.The NO-CH flame atomic absorption spectral method
YS/T 581.5-2006 Determination of chemical contents and physical properties of aluminium fluoride Part 5:Determination of sodium by flame atomic absorption spectrometric method
YS/T 273.5-2006 Chemical analysis methods and physical properties of cryolite. Part 5:Determination of sodium by flame atomic absorption spectrometric method
YS/T 1028.1-2015 Methods for chemical analysis of lithium iron phosphate.Part 1:Determination of total iron content.Titanium trichloride reduction potassium dichromate titration methods
YS/T 273.12-2006 Chemical analysis methods and physical properties of cryolite. Part 12:The atomic absorption spectrophotometric method for the determination of calcium oxide content

CEN - European Committee for Standardization, Principle of Total Nitrogen Determination Method

EN ISO 8968-4:2001 Milk - Determination of Nitrogen Content - Part 4: Determination of Non-Protein Nitrogen Content

Jiangxi Provincial Standard of the People's Republic of China, Principle of Total Nitrogen Determination Method

DB36/T 689-2012 Chemical analysis method of ionic rare earth raw ore Determination of total amount of rare earth in ionic phase EDTA titration method

Professional Standard - Rare Earth, Principle of Total Nitrogen Determination Method

XB/T 619-2015 Chemical analysis methods of ion type rare earth ore.Determination of total rare earth ion phase

SE-SIS, Principle of Total Nitrogen Determination Method

SIS SS 02 84 23-1991 Air Quality — Stationary source emissions — Determination of the total mass concentration ofmercury — Flameless atomic absorption methods

CU-NC, Principle of Total Nitrogen Determination Method

NC 34-47-1987 Agricultural Machinery and Elements. Forestry and Agricultural Machines. Methodology for the Determination of Testing Conditions
NC 34-48-1987 Agricultural Machinery and Elements. Foresty and Agricultural Machines. Energetic Evaluation. Methodology for its Impleraentation

Professional Standard - Hygiene , Principle of Total Nitrogen Determination Method

WS/T 27-1996 Urine.Separate Determination of organic,inorganic and total mercury.Selective reduction cold atomic absorption spectrometric method

American National Standards Institute （ANSI), Principle of Total Nitrogen Determination Method

ANSI/ASTM D4661:1998 Polyurethane-Isocyanate Raw Materials, Determination of Total Chlorine, Method for Testing (08.03)

International Telecommunication Union (ITU), Principle of Total Nitrogen Determination Method

ITU-T P.78-1996 Subjective Testing Method for Determination of Loudness Ratings in Accordance with Recommendation P.76 - Telephone Transmission Quality Measurements Related to Speech Loudness Study Group 12; 21 pp

BELST, Principle of Total Nitrogen Determination Method

STB 1932-2009 Wine production and wine raw material. Method for free and total sulphurous acid determination

Military Standard of the People's Republic of China-General Armament Department, Principle of Total Nitrogen Determination Method

GJB 2589.20A-2021 Test methods for physical and chemical properties of military leather fur Part 20: Determination of nitrogen content and cortex

工业和信息化部, Principle of Total Nitrogen Determination Method

YS/T 273.16-2020 Methods of chemical analysis and physical properties of cryolite Part 16: Determination of lithium content Flame atomic absorption spectrometry

GB-REG, Principle of Total Nitrogen Determination Method

REG NASA-HDBK-8739.19-3-2010 Measurement Uncertainty Analysis Principles and Methods, NASA Measurement Quality Assurance Handbook ?ANNEX 3

国家市场监督管理总局、中国国家标准化管理委员会, Principle of Total Nitrogen Determination Method

GB/T 40798-2021 Chemical analysis method of ion-adsorption rare earth ore—Determination of total rare earth contents—Inductively coupled plasma mass spectrometry
GB/T 6609.12-2018 Chemical analysis methods and determination of physical performance of alumina—Part 12：Determination of zinc oxide content—Flame atomic absorption spectrometry method

Canadian General Standards Board （CGSB), Principle of Total Nitrogen Determination Method

CAN/CGSB-4.2 NO.9.1-M90-1990 Textile Test Methods Breaking Strength of Fabrics - Strip Method - Constant-Time-to-Break Principle

Professional Standard - Geology, Principle of Total Nitrogen Determination Method

DZ/T 0253.3-2014 Analytic methods for biologic samples in eco-geochemistry assessment.Part 3: Determination of total mecury content.Cold atomic fluorescent spectrophotometry

HU-MSZT, Principle of Total Nitrogen Determination Method

MSZ 12303/2-1984