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Determination method of total nitrogen in water

Determination method of total nitrogen in water, Total:500 items.

In the international standard classification, Determination method of total nitrogen in water involves: Water quality, Milk and milk products, Animal feeding stuffs, Coals, External water conveyance systems, Fertilizers, Analytical chemistry, Non-ferrous metals, Soil quality. Pedology, Organic chemicals, Lubricants, industrial oils and related products, Ferrous metals, Spices and condiments. Food additives, Farming and forestry, Test conditions and procedures in general, Vocabularies, Inorganic chemicals, Leather technology, General methods of tests and analysis for food products, Materials for aerospace construction, Fuels, Air quality, Protection against fire, Petroleum products in general, Ferroalloys, Environmental protection, Metalliferous minerals, Food products in general, Sugar. Sugar products. Starch, Crude petroleum, Natural gas, Tobacco, tobacco products and related equipment, Earthworks. Excavations. Foundation construction. Underground works, Products of the chemical industry, Radiation measurements, Wastes, Medical sciences and health care facilities in general, Construction materials, Beverages, Explosion protection, Plastics, Standardization. General rules, Pulps, Cereals, pulses and derived products, Pesticides and other agrochemicals, Non-metalliferous minerals, Fruits. Vegetables, Radiation protection, Geology. Meteorology. Hydrology, ENVIRONMENT. HEALTH PROTECTION. SAFETY, Refractories, Ceramics, Tea. Coffee. Cocoa, Textile auxiliary materials, Burners. Boilers, Testing of metals, Edible oils and fats. Oilseeds, Furniture.

American Society for Testing and Materials (ASTM), Determination method of total nitrogen in water

ASTM D3590-11 Standard Test Methods for Total Kjeldahl Nitrogen in Water
ASTM D3590-02 Standard Test Methods for Total Kjeldahl Nitrogen in Water
ASTM D3590-17 Standard Test Methods for Total Kjeldahl Nitrogen in Water
ASTM 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 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 D1426-98 Standard Test Methods for Ammonia Nitrogen In Water
ASTM D3590-02(2006) Standard Test Methods for Total Kjeldahl Nitrogen in Water
ASTM D3590-89(1994)e1 Standard Test Methods for Total Kjeldahl Nitrogen in Water
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 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 D1426-03 Standard Test Methods for Ammonia Nitrogen In Water
ASTM D8083-16(2023) Standard Test Method for Total Nitrogen, and Total Kjeldahl Nitrogen (TKN) by Calculation, in Water by High Temperature Catalytic Combustion and Chemiluminescence Detection
ASTM E258-67(1996)e1 Standard Test Method for Total Nitrogen in Organic Materials by Modified Kjeldahl Method
ASTM D5475-93(1997) Standard Test Method for Nitrogen- and Phosphorus-Containing Pesticides in Water by Gas Chromatography with a Nitrogen-Phosphorus Detector
ASTM D6016-17 Standard Test Method for Determination of Nitrogen, Water Extractable in Leather
ASTM D5475-93(2002) Standard Test Method for Nitrogen- and Phosphorus-Containing Pesticides in Water by Gas Chromatography with a Nitrogen-Phosphorus Detector
ASTM D6016-06(2012) Standard Test Method for Determination of Nitrogen, Water Extractable in Leather
ASTM D3223-91 Standard Test Method for Total Mercury in Water
ASTM D3223-17 Standard Test Method for Total Mercury in Water
ASTM D5176-20 Standard Test Method for Total Chemically Bound Nitrogen in Water by Pyrolysis and Chemiluminescence Detection
ASTM D6016-96 Standard Test Method for Determination of Nitrogen, Water Extractable in Leather
ASTM D6016-96(2001) Standard Test Method for Determination of Nitrogen, Water Extractable in Leather
ASTM D6016-06 Standard Test Method for Determination of Nitrogen, Water Extractable in Leather
ASTM D3228-20 Standard Test Method for Total Nitrogen in Lubricating Oils and Fuel Oils by Modified Kjeldahl Method
ASTM D3228-19 Standard Test Method for Total Nitrogen in Lubricating Oils and Fuel Oils by Modified Kjeldahl Method
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 UOP432-65T Total Nitrogen in Liquefied Petroleum Gases by Acid Extraction-Kjeldahl Procedure
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 D3228-08(2014) Standard Test Method for Total Nitrogen in Lubricating Oils and Fuel Oils 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 C1494-01 Standard Test Methods for Determination of Mass Fraction of Carbon, Nitrogen, and Oxygen in Silicon Nitride Powder
ASTM C1494-13(2018) Standard Test Methods for Determination of Mass Fraction of Carbon, Nitrogen, and Oxygen in Silicon Nitride Powder
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 D6016-17(2023) Standard Test Method for Determination of Nitrogen, Water Extractable in Leather
ASTM D6556-07 Standard Test Method for Carbon Black-Total and External Surface Area by Nitrogen Adsorption
ASTM D7678-17(2022) Standard Test Method for Total Oil and Grease (TOG) and Total Petroleum Hydrocarbons (TPH) in Water and Wastewater with Solvent Extraction using Mid-IR Laser Spectroscopy
ASTM D7678-17 Standard Test Method for Total Oil and Grease (TOG) and Total Petroleum Hydrocarbons (TPH) in Water and Wastewater with Solvent Extraction using Mid-IR Laser Spectroscopy
ASTM D4954-89(2003) Standard Test Method for Determination of Nitrilotriacetates in Detergents
ASTM D8478-23 Standard Test Method for N-Hexane Recoverable Total Oil and Grease and Total Petroleum Hydrocarbons in Water by ATR-Infrared Determination
ASTM D8193-18 Standard Test Method for Total Oil and Grease (TOG) and Total Petroleum Hydrocarbon (TPH) in Water and Wastewater with Solvent Extraction Using Non-Dispersive Mid-IR Transmission Spectroscopy
ASTM D6556-03 Standard Test Method for Carbon Black8212;Total and External Surface Area by Nitrogen Adsorption
ASTM UOP682-84 Total Cyanide in Refinery Waters by Visible Spectrophotometry
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 D6556-21 Standard Test Method for Carbon Black—Total and External Surface Area by Nitrogen Adsorption
ASTM D6556-14 Standard Test Method for Carbon Blackmdash;Total and External Surface Area by Nitrogen Adsorption
ASTM D4517-04(2009) Standard Test Method for Low-Level Total Silica in High-Purity Water by Flameless Atomic Absorption Spectroscopy
ASTM D4954-89(2009) Standard Test Method for Determination of Nitrilotriacetates in Detergents
ASTM D7573-18 Standard Test Method for Total Carbon and Organic Carbon in Water by High Temperature Catalytic Combustion and Infrared Detection
ASTM D7573-18a Standard Test Method for Total Carbon and Organic Carbon in Water by High Temperature Catalytic Combustion and Infrared Detection
ASTM D7573-09(2017) Standard Test Method for Total Carbon and Organic Carbon in Water by High Temperature Catalytic Combustion and Infrared Detection
ASTM D7573-18ae1 Standard Test Method for Total Carbon and Organic Carbon in Water by High Temperature Catalytic Combustion and Infrared Detection
ASTM D6556-16 Standard Test Method for Carbon Black&x2014;Total and External Surface Area by Nitrogen Adsorption
ASTM D4517-15(2023) Standard Test Method for Low-Level Total Silica in High-Purity Water by Flameless Atomic Absorption Spectroscopy
ASTM D2791-93(2001) Standard Test Methods for Continuous Determination of Sodium in Water
ASTM D2791-19 Standard Test Method for On-Line Determination of Sodium in Water
ASTM C566-97 Standard Test Method for Total Evaporable Moisture Content of Aggregate by Drying
ASTM C566-97(2004) Standard Test Method for Total Evaporable Moisture Content of Aggregate by Drying
ASTM D4374-00 Standard Test Methods for Cyanides in Water--Automated Methods for Total Cyanide, Acid dissociable Cyanide, and Thiocyanate
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 D5530-94(1998) Standard Test Method for Total Moisture of Hazardous Waste Fuel by Karl Fischer Titrimetry
ASTM D5530-94(2003) Standard Test Method for Total Moisture of Hazardous Waste Fuel by Karl Fischer Titrimetry
ASTM D5530-94(2009) Standard Test Method for Total Moisture of Hazardous Waste Fuel by Karl Fischer Titrimetry
ASTM D5530-22 Standard Test Method for Total Moisture of Hazardous Waste Fuel by Karl Fischer Titrimetry
ASTM D5373-08 Standard Test Methods for Instrumental Determination of Carbon, Hydrogen, and Nitrogen in Laboratory Samples of Coal
ASTM D4129-05(2020) Standard Test Method for Total and Organic Carbon in Water by High Temperature Oxidation and by Coulometric Detection

SE-SIS, Determination method of total nitrogen in water

SIS SS 02 81 86-1985 Determination of total arsenic in water - Silver diethyldithiocarbamate spectrometric method
SIS SS 02 81 33-1991 Determination of the sum of the nitrite and nitrate nitrogen content of water
SIS SS 02 81 76-1986 Determination of total cyanide in water - Photometric or titrimetric method
SIS SS 02 81 99-1990 Guidelines for the determination of total organic carbon (TOC) in water
SIS SS 02 81 01-1992 Nitrogen content of water — Determination with Kjeldahl method after reduction with Devarda's alloy

Group Standards of the People's Republic of China, Determination method of total nitrogen in water

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/GXAS 477-2023 Determination of total nitrogen content in sugarcane juice —sulphuric acid titrimetric method
T/CHES 15-2017 Determination of Total Nitrogen in Water Quality Gas Phase Molecular Absorption Spectrometry
T/GRM 046-2022 Determination of Mercury in Gas Field Water
T/HBFIA 0031-2022 Chromogenic plate counting method for the determination of the total number of bacterial colonies in water
T/SXCIES 002-2020 Crude benzol- Determination of moisture content
T/CNIA 0016-2019 Determination of Hydrogen Chloride, Nitrogen, Oxygen and Total Carbon Content in Recycled Hydrogen for Polysilicon by Gas Chromatography

PL-PKN, Determination method of total nitrogen in water

PN C04576 ArkusZ12-1973 Water and waste water Tests for nitrogenDetermination of total nitrogen of Kjeldahl
PN Z04075-1961 Speedy Me?hod for De?er mina?ion of Ni?rogen Oxyde* in Air
PN C04642-04-1991 Water and waste water. Tests of pollutants in atmospheric precipitation. Determination of ammonium nitrogen by colorimetric method
PN C04570-08-1987 Water and waste water Tests for metals by atomie absorption spectrometry Determination of total chromium
PN C04611 ArkusZ04-1972 Water and waste water Tests for copper Determination of copper in boilers water flow cirkuits at thermal power stations by colorimetric method with sodium diethyldithiocarbamate Rang?: 0,001÷1,0 rag/l
PN C04596-02-1990 Water and waste water Tests for zinc Determination of zinc by zincon method
PN C04567 ArkusZ07-1971 Water and waste water. Study of silica content. Determination of to- tal silica by gravimetric method
PN C04567 ArkusZ08-1971 Water and waste water Study of silica content Determination of total silica by colorimetric methods

Association of Official Analytical Chemists (AOAC), Determination method of total nitrogen in water

AOAC 991.20 AOAC Official Method 991.20 Nitrogen (Total) in Milk Kjeldahl Methods
AOAC 962.16 AOAC Official Method 962.16 Sulfurous Acid (Total) in Food Modified Monier-Williams Method

Jilin Provincial Standard of the People's Republic of China, Determination method of total nitrogen in water

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

GOSTR, Determination method of total nitrogen in water

GOST R 58596-2019 Soils. Methods for determination of total nitrogen
GOST 4151-1972 Drinking water. Method for determination of total hardness
GOST 27588-2020 Coke. Determination of total moisture

Indonesia Standards, Determination method of total nitrogen in water

SNI 4146-2013
SNI 13-4699-1998 Determination of total manganese (Mn-total) in manganese ores sample
SNI 1971-2011 Cara uji kadar air total agregat dengan pengeringan
SNI 13-4719-1998 Methods for moisture determination of soils
SNI 06-2484-2002 Test methods for nitrite content in water by colorymetry
SNI 2332.3-2015 Cara uji mikrobiologi - Bagian 3: Penentuan Angka Lempeng Total (ALT) pada produk perikanan
SNI 06-6989.28-2005 Water and wastewater - Part 28: Test methods of total organic carbon (TOC)
SNI 06-6601-2001 Methods for determination of sulphate in water by residue draining in gravimetric methods
SNI 06-6858-2002 Test methods of total coli bacteria in water by membrane filters

VN-TCVN, Determination method of total nitrogen in water

TCVN 3705-1990 Aquatic products.Method for the determination of total nitrogen and protein content
TCVN 3706-1990 Aquatic products.Method for the determination of nitrogen ammonia content
TCVN 3707-1990 Aquatic products.Method for the determination of amine ammonia nitrogen content
TCVN 3708-1990 Aquatic products.Method for the determination of nitrogen amino acid content

German Institute for Standardization, Determination method of total nitrogen in water

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 51732:2014-07 Testing of solid mineral fuels - Determination of total carbon, hydrogen and nitrogen - Instrumental methods
DIN EN 17892:2022 Water quality - Determination of the sum of perfluorinated substances (Sum of PFAS) in drinking water - Method using liquid chromatography/mass spectrometry (LC/MS); German and English version prEN 17892:2022
DIN EN 25663:1993-11 Water quality; determination of Kjeldahl nitrogen; method after mineralization with selenium (ISO 5663:1984); German version EN 25663:1993
DIN EN 17892:2022-09 Water quality - Determination of the sum of perfluorinated substances (Sum of PFAS) in drinking water - Method using liquid chromatography/mass spectrometry (LC/MS); German and English version prEN 17892:2022 / Note: Date of issue 2022-08-12
DIN EN 25663:1993 Water quality; determination of Kjeldahl nitrogen; method after mineralization with selenium (ISO 5663:1984); German version EN 25663:1993
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 ISO 9697:2016 Water quality - Gross beta activity in non-saline water - Test method using thick source (ISO 9697:2015); German and English version FprEN ISO 9697:2015
DIN 38409-27:1992 German standard methods for the examination of water, waste water and sludge; parameters characterizing effects and substances (group H); determination of total bound nitrogen TN<(Index)b> (H 27)
DIN 38406-5:1983-10 German standard methods for the examination of water, waste water and sludge; cations (group E); determination of ammonia-nitrogen (E 5)

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

GB/T 2441.1-2001 Determination of urea-Determination of total nitrogen content
GB/T 19227-2008 Determination of nitrogen in coal
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 8572-2001 Determination of total nitrogen content for compound fertilizers-Titrimetric method after distillation
GB/T 10511-1989 The determination of total nitrogen content for nitrophosphate titrimetric method after distillation
GB/T 10511-2008 Determination of tatal nitrogen content for nitrophosphate.Titrimetric method after distillation
GB/T 8572-2010 Determination of total nitrogen content for compound fertilizers titrimetric method after distillation
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 2441.1-2008 Determination of urea.Part 1:Total nitrogen content
GB/T 10209.1-2001 Determination of total nitrogen content for monoammonium phosphate and diammonium phosphate(Titrimetric method after distillation)
GB 9170-1988 Determination method of total nitrogen content in lubricating oil and fuel oil (improved Kjeldahl method)
GB/T 9170-1988 Lubricating oils and fuel oils--Determination of total nitrogen--Modified kjeldahl method
GB/T 5687.4-1985 Methods for chemical analysis of ferro-chromium--The neutralization titration method for the determination of nitrogen content
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 12456-1990 Method for determination of total acid in foods
GB/T 23869-2009 Method for determination of the total mercury in pollen
GB/T 30728-2014 Determination of nitrogen in solid biofuels
GB/T 18856.12-2002 Test methods for quality of coal water mixture--Part 12: Determination of nitrogen of coal water mixture
GB/T 15076.13-1994 Methods for chemical analysis of tantalum and niobium-Determination of nitrogen content in tantalum
GB/T 13598-1992 A method for the determination of agricultural chemical residues containing nitrogenous in tobacco leaves
GB/T 19227-2003 Determination of nitrogen in coal and coke semi-micro gasification method
GB/T 11446.8-2013 Test method for total organic carbon in electronic grade water
GB/T 11446.8-1997 Test method for total organic carbon in electronic grade water
GB/T 11894-1989 Water quality--Determination of total nitrogen--Alkaline potassium persulfate digestion-UV spectro photometric method
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 13093-1991 Method for determination of aerobic bacterial count in feeds
GB 13093-1991 Method for determiantion of aerobic bacterial count in feeds
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 14422-2008 Analysis of water used in boiler and cooling systems.Determination of benzotriazole
GB/T 12143.2-1989 Determination method for amino nitrogen content in fruit and vegetable juice beverages--Formol number
GB/T 12009.1-1989 Isocyanates--Determination of total chlorine content
GB 12009.1-1989 Determination method of total chlorine content in isocyanate
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 7630-1987 The tribromoarsenazo photometric method for the determination of rare earth oxide content in rice and wheat
GB 7630-1987 The tribromoarsenazo photometric method for the determination of rare earth oxide content in rice and wheat
GB 12143.2-12143.3-89 Determination method for amino nitrogen content in fruit and vegetable juice beverages-Formol number Determination method for L-ascorbic acid in fruit and vegetable juice beverages-Ethyl ether extract
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 18204.29-2000 Method for determination of urea in water of swimming place
GB/T 211-1996 Determination of total moisture in coal
GB/T 14769-1993 Method for determination of moisture in foods
GB/T 211-2007 Determination of total moisture in coal
GB/T 211-2017 Determination of total moisture in coal
GB/T 223.36-1994 Methods for chemical analysis of iron, steel and alloy. The neutral titration method for the determinaion of nitrogen content after distillation separation
GB/T 11446.10-1997 Test method for total bacterial count in electronic grade water by membrane filters
GB/T 11446.10-2013 Test method for total bacterial count in electronic grade water by membrane filters
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 5543-1985 Resin finishing agent--Determination of total formaldehyde content
GB 5543-1985 Resin finishing agent－Determination of total formaldehyde content
GB/T 14422-1993 Analysis of water used in boiler and cooling system. Determination of benzotriazole. Ultraviolet spectrophotometry
GB/T 18204.9-2000 Methods of microbiological examination for water in swimming pool-Determination of aerobic bacterial count
GB/T 12392-1990 Method for determination of total ascorbic acid in fruits,vegetables and derived products--Fluorometric method and colorimetric method
GB/T 8857-1988 Method for determination of total ash and of alkalinity of total ash and water-soluble ash in fruit and vegetable products
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 3257.20-1999 Methods for chemical analysis of bauxite--Determination of total carbon content--Non-aqueous titrametric method after combustion
GB/T 16480.5-1996 Method for chemical analysis of yttrium and yttium oxide--Determination of nitrogen content

Professional Standard - Urban Construction, Determination method of total nitrogen in water

CJ 26.27-1991 Municipal sewage water quality inspection method standard Determination of total nitrogen Titration method after distillation
CJ/T 77-1999 Municipal sewage.Determination of total nitrogen.Distillation and titration method
CJ 26.25-1991 Determination of Standard Ammonia Nitrogen in Municipal Sewage Water Quality Inspection Method
CJ 26.20-1991 Determination of Standard Total Chromium in Municipal Sewage Water Quality Inspection Method
CJ 26.13-1991 Municipal sewage water quality test method Determination of standard aniline Azo spectrophotometric method
CJ 26.26-1991 Municipal sewage water quality inspection method standard Determination of nitrite nitrogen spectrophotometric method
CJ 26.5-1991 Municipal sewage water quality inspection method Standard gravimetric method for total solids
CJ 26.28-1991 Municipal sewage water quality inspection method standard Determination of total phosphorus spectrophotometric method

RU-GOST R, Determination method of total nitrogen in water

GOST 10671.4-2016 Reagents. Methods for determination of total nitrogen impurity
GOST 33045-2014 Water. Methods for determination of nitrogen-containing matters
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 4192-1982 Drinking water. Methods for determination of mineral nitrogen-containing matters
GOST 27753.8-1988 Greenhouse grounds method for determination of ammonium nitrogen
GOST 4011-1972 Driking water. Methods for determination of total iron
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 27588-1991 Hard coal coke. Method for determination of total moisture content
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 31958-2012 Water. Methods for determination of total and dissolved organic carbon
GOST R 55683-2013 Drinking water. Method for the determination of total chlorine in situ
GOST 31956-2012 Water. Methods for determination of chromium (VI) and total chromium
GOST 18164-1972 Drinking water. Method for determination of total solids content
GOST R 52911-2008 Solid mineral fuels. Methods for determination of total moisture
GOST 30181.8-1994 Mineral fertilizers. Method for determination of mass fraction of ammonium nitrogen in compound fertilizers (chloramine method)
GOST 30181.7-1994 Mineral fertilizers. Method for determination of total mass fraction of nitrogen in compound fertilizers (in ammonium and amide forms, using hypochlorite method)
GOST R 52991-2008 Water. Methods for determination of total and dissolved organic carbon
GOST 2082.2-1981 Molibdenum concentrates. Method for the determination of total moisture and oil content
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 28552-1990 Tea. Methods for determination of total, water-insoluble and water-soluble ash
GOST 28738-2016 Reagents. Methods for determination of total sulphur impurity in organic solvents
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 54491-2011 Canned fruits. Method for determination of quinoline, triarylmethane and azo colours presence
GOST R 54231-2010 Solid recovered fuels. Determination of moisture content using the oven drying. Part 1. Total moisture. Reference method
GOST R 54232-2010 Solid recovered fuels. Determination of moisture content using the oven dry method. Part 2. Total moisture. Simplified method
GOST R 54231-2010(2019) Solid recovered fuels. Determination of moisture content using the oven drying. Part 1. Total moisture. Reference method
GOST R 54232-2010(2019) Solid recovered fuels. Determination of moisture content using the oven dry method. Part 2. Total moisture. Simplified method
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 R ISO 17234-2-2015 Leather. Chemical tests for the determination of certain azo colorants in dyed leathers. Part 2. Method for determination of 4-aminoazobenzene
GOST R ISO 17234-1-2010 Leather. Methods of determination of certain azo colorants in dyed leathers. Part 1. Determination of certain aromatic amines derived from azo colorants

Professional Standard - Coal, Determination method of total nitrogen in water

MT/T 742.1-1997 Determination of total chrominum in mine water
MT/T 743.1-1997 Determination of total phosphorus in mine water
MT/T 742.1-2011 Determination of total chrominum in mine water
MT/T 743.1-2011 Determination of total phosphorus in mine water
MT/T 744-1997 Determination of the gross αand grossβradioactivity of the groundwater in coal mines
MT 279-1994 Harmful gas existing in mine air Detection method of nitrogen oxide（detector tube method）
MT/T 279-1994
MT/T 890-2000 Determination of lithium in coal mine water
MT/T 891-2000 Determination of boron in coal mine water
MT/T 893-2000 Determination of bromine in coal mine water
MT/T 359-2005 Determination of arsenic in coal mine water
MT/T 359-1994 Determination method of arsenic in coal mine water
MT/T 806-1999 Determination of trace oil in groundwater from coal mines
MT/T 256-2000 Measuring method of pH value in coal mine water
MT/T 742.2-1997 Determination of chrominum(Ⅵ) in mine water
MT/T 360-2005 Determination of fluorine ion in coal mine water
MT/T 368-2005 Determination of iron ion in coal mine water
MT/T 373-2005 Determination of aluminum ion in coal mine water
MT/T 371-2005 Determination of sulfion in coal mine water
MT/T 742.2-2011 Determination of chrominum(VI) in mine water
MT/T 805-1999 Determination on the SS of water in coal mines
MT/T 892-2000 Determination of iodide ions in coal mine water
MT/T 360-1994 Determination method of fluoride ion in coal mine water
MT/T 368-1994 Determination method of iron ion in coal mine water
MT/T 370-1994 Determination method of dissolved oxygen in coal mine water
MT/T 373-1994 Determination method of aluminum ion in coal mine water
MT/T 201-1995 Determination method of chloride ion in coal mine water
MT/T 202-1995 Determination method of calcium ion in coal mine water
MT/T 254-2000 Determination method of ammonium ion in coal mine water
MT 254-1991 Determination method of ammonium ion in coal mine water
MT/T 743.3-1997 Determination of phosphorus in hydrolysable phosphate in mine water
MT/T 743.3-2011 Determination of phosphorus in hydrolysable phosphate in mine water

Japanese Industrial Standards Committee (JISC), Determination method of total nitrogen in water

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 1653:1991 Methods for determination of nitrogen in zirconium and zirconium alloys
JIS H 1612:1993 Methods for determination of nitrogen in titanium and titanium alloys
JIS K 0104:2000 Methods for determination of nitrogen oxides in flue gas
JIS K 0170-3:2011 Testing methods for water quality by flow analysis -- Part 3: Total nitrogen
JIS K 0170-3:2019 Testing methods for water quality by flow analysis -- Part 3: Total nitrogen
JIS K 2609:1990 Crude petroleum and petroleum products -- Determination of nitrogen content
JIS K 0104:1984 Methods for determination of oxides of nitrogen in flue gases
JIS K 0104:2011 Methods for determination of nitrogen oxides in flue gas
JIS K 0400-44-40:2000 Water quality -- Determination of Kjeldahl nitrogen -- Method after mineralization with selenium
JIS K 0551:1994 Testing methods for total organic carbon in highly purified water
JIS K 0227:1984 Analytical method for trace nitrogen oxides in diluent gas and zero gas
JIS K 0555:1995 Testing methods for determination of silica in highly purified water

Korean Agency for Technology and Standards (KATS), Determination method of total nitrogen in water

KS D 2555-1995 Methods for determination of nitrogen in tantalum
KS D 2555-2015 Methods for determination of nitrogen in tantalum
KS D 2555-2005 Methods for determination of nitrogen in tantalum
KS D 2530-2007 Methods for determination of nitrogen in titanium and titanium alloys
KS D 1811-1993 Methods for determination of nitrogen in iron and steel
KS D 1811-2003 Methods for determination of nitrogen in iron and steel
KS I ISO 13395:2008 Water quality-Determination of nitrite nitrogen and nitrate nitrogen and the sum of both by flow analysis (CFA and FIA) and spectrometric detection
KS H ISO 1871-2013(2018) Agricultural food products ― General directions for the determination of nitrogen by the Kjeldahl method
KS D 2530-2016 Methods for determination of nitrogen in titanium and titanium alloys
KS D 2573-1995 Methods for determination of nitrogen in zirconium and zirconium alloys
KS D 2573-2015 Methods for determination of nitrogen in zirconium and zirconium alloys
KS D 2530-2021 Methods for determination of nitrogen in titanium and titanium alloys
KS I ISO 13395-2008(2018) Water quality－Determination of nitrite nitrogen and nitrate nitrogen and the sum of both by flow analysis (CFA and FIA) and spectrometric detection
KS M 2112-2011 Crude petroleum and petroleum products-Determination of nitrogen content
KS I ISO 9696-2007(2017) Water quality－Measurement of gross alpha activity in non-saline water－Thick source method
KS M 7086-2006 Testing method for moisture in pulp
KS L 3413-2007 Testing method for moisture in graphite
KS I 3213-2009 Testing methods for concentration of fine particles in highly purified water
KS E 3012-2017 Method for determination of combined water in iron ores
KS E 3028-2021 Methods for determination of combined water in manganese ores
KS E 3012-2022 Method for determination of combined water in iron ores
KS A 4513-2000 MEASURING METHODS OF B RADIOACTIVITY CONCENTRATION OF DRAIN WATER
KS A 4513-1985 MEASURING METHODS OF B RADIOACTIVITY CONCENTRATION OF DRAIN WATER
KS D ISO 10700-2008(2018) Steel and iron－Determination of manganese content－Flame atomic absorption spectrometric method

Association Francaise de Normalisation, Determination method of total nitrogen in water

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 A06-555:2010 Steel - Determination of nitrogen content - Spectrophotometric method.
NF X34-117:2011 Solid biofuels - Determination of total content of carbon, hydrogen and nitrogen - Instrumental 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 M07-058:1992 Produits pétroliers - Dosage de l'azote total dans les distillats pétroliers - Méthode par combustion et détection par chimioluminescence.
NF M60-819:2010 Water quality - Measurement of gross alpha and gross beta activity in non-saline water - Thin source deposit method.
NF T90-012*NF EN ISO 13395:1996 Water quality - Determination of nitrite nitrogen and nitrate nitrogen and the sum of both by flow analysis (CFA and FIA) and spectrometric detection.

Danish Standards Foundation, Determination method of total nitrogen in water

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/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 13395:1997 Water quality - Determination of nitrite nitrogen and nitrate nitrogen and the sum of both by flow analysis (CFA and FIA) and spectrometric detection

Lithuanian Standards Office , Determination method of total nitrogen in water

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 ISO 13395:2000 Water quality - Determination of nitrite nitrogen and nitrate nitrogen and the sum of both by flow analysis (CFA and FIA) and spectrometric detection (ISO 13395:1996)
LST 1611-2000 Confectionery. Methods for determination moisture and total solids content

AENOR, Determination method of total nitrogen in water

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 34080:1974 ANALYSIS METHODS FOR CHOCOLATES. DETERMINATION OF TOTAL NITROGEN. (PROTEINS).
UNE-EN 25663:1994 WATER QUALITY. DETERMINATION OF KJELDAHL NITROGEN. METHOD AFTER MINERALIZATION WITH SELENIUM. (ISO 5663:1984).
UNE-EN ISO 13395:1997 WATER QUALITY. DETERMINATION OF NITRITE NITROGEN AND NITRATE NITROGEN AND THE SUM OF BOTH BY FLOW ANALYSIS (CFA AND FIA) AND SPECTROMETRIC DETECTION. (ISO 13395:1996).
UNE-EN ISO 9697:2017 Water quality - Gross beta activity in non-saline water - Test method using thick source (ISO 9697:2015)

British Standards Institution (BSI), Determination method of total nitrogen in water

BS 7755-3.7:1995 Soil quality. Chemical methods. Determination of total nitrogen. Modified Kjeldahl method
BS EN 15750:2010 Fertilizers. Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods
BS EN 15750:2009 Fertilizers - Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods
BS 5551-4.1.3:1986 Fertilizers. Chemical analysis. Determination of nitrogen. Method for determination of total nitrogen content (titrimetric method after distillation)
BS 4267-2:1988 Ammonium nitrate - Method for determination of total nitrogen content
BS ISO 23695:2023 Water quality. Determination of ammonium nitrogen in water. Small-scale sealed tube method
21/30426878 DC BS ISO 23697-2. Water quality. Determination of total nitrogen (TNb) in water using small-scale sealed tubes. Part 2. Chromotropic acid based method
21/30396472 DC BS ISO 23695. Water quality. Determination of ammonium nitrogen in water. Small-scale sealed tube method
21/30426875 DC BS ISO 23697-1. Water quality. Determination of total nitrogen (TNb) in water using small-scale sealed tubes. Part 1. Dimethylphenol based method
BS ISO 23697-2:2023 Water quality. Determination of total bound nitrogen (ST-TNb) in water using small-scale sealed tubes - Chromotropic acid colour reaction
BS EN ISO 13395:1996 Water quality - Determination of nitrite nitrogen and nitrate nitrogen and the sum of both by flow analysis (CFA and FIA) and spectrometric detection
BS EN 25663:1993 Water quality. Determination of Kjeldahl nitrogen. Method after mineralization with selenium
BS ISO 23697-1:2023 Water quality. Determination of total bound nitrogen (ST-TNb) in water using small-scale sealed tubes - Dimethylphenol colour reaction
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 ISO 10704:2010 Water quality. Measurement of gross alpha and gross beta activity in non-saline water. Thin source deposit method
BS ISO 10704:2009 Water quality - Measurement of gross alpha and gross beta activity in non-saline water - Thin source deposit method
22/30455832 DC BS EN 17892. Water quality. Determination of the sum of perfluorinated substances (Sum of PFAS) in drinking water. Method using liquid chromatography/mass spectrometry (LC/MS)
BS DD CEN/TS 15750:2009 Fertilizers - Determination of different forms of nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods
BS EN ISO 11732:2005 Water quality. Determination of ammonium nitrogen. Method by flow analysis (CFA and FIA) and spectrometric detection
DD CEN/TS 15414-2:2010 Solid recovered fuels. Determination of moisture content using the oven dry method - Determination of total moisture content by a simplified method
BS 6068-2.40:1991 Water quality. Physical, chemical and biochemical methods. Method for the determination of borate by spectrometry using azomethine-H
DD CEN/TS 15414-1:2010 Solid recovered fuels. Determination of moisture content using the oven dry method - Determination of total moisture by a reference method
BS EN 25814:1992 Method for determination of dissolved oxygen in water: electrochemical probe method
BS DD CEN/TS 14774-1:2004 Solid biofuels - Methods for the determination of moisture content - Oven dry method - Total moisture - Reference method
BS DD CEN/TS 14774-2:2004 Solid biofuels - Methods for the determination of moisture content - Oven dry method - Total moisture - Simplified method
BS EN ISO 18134-2:2015 Solid biofuels. Determination of moisture content. Oven dry method. Total moisture. Simplified method
BS EN 14774-2:2009 Solid biofuels - Determination of moisture content - Oven dry method - Total moisture - Simplified method
BS EN 14774-2:2010 Solid biofuels. Determination of moisture content. Oven dry method. Total moisture. Simplified method
BS 684-2.8:1977 Methods of analysis of fats and fatty oils - Other methods - Determination of total neutral oil

European Committee for Standardization (CEN), Determination method of total nitrogen in water

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 13395:1996 Water Quality - Determination of Nitrite Nitrogen and Nitrate Nitrogen and the Sum of Both by Flow Analysis (CFA and FIA) and Spectrometric Detection
EN 15750:2009 Fertilizers - Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods
EN ISO 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 10704:2015 Water quality - Measurement of gross alpha and gross beta activity in non-saline water - Thin source deposit method
EN ISO 18134-2:2017 Solid biofuels - Determination of moisture content - Oven dry method Part 2: Total moisture - Simplified method

KR-KS, Determination method of total nitrogen in water

KS D 1811-2003(2023) Methods for determination of nitrogen in iron and steel
KS I 3202-2023 Testing methods for total organic carbon in highly purified water
KS E ISO 11722-2017 Solid mineral fuels－Hard coal－Determination of moisture in the general analysis test sample by drying in nitrogen

Standard Association of Australia （SAA）, Determination method of total nitrogen in water

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 1050.12:1983/Amdt 1:1984
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 2434.1:1999 Methods for the analysis and testing of lower rank coal and its chars - Determination of the total moisture content of lower rank coal

CZ-CSN, Determination method of total nitrogen in water

CSN 58 0703-7-1999 Testing methods of dehydrated products and seasonings - Part 7: Determinaton of total nitrogen
CSN 65 4836-1983 Minerál fertilizers Methode for determination of total nitrogen content
CSN 66 8102 Cast.17-1997
CSN 58 0703-8-1999 Testing methods of dehydrated products and seasonings - Part 8: Determination of ammoniacal nitrogen
CSN 46 7092-29-1998 Testing methods for feeding stuffs - Part 29: Determination of amonia content in the fish meals
CSN 66 8102 Cast.28-1978 Smokeless powders. Methods of testing. Determination of nitrocellulose-nitrogen in double-base powders

Hebei Provincial Standard of the People's Republic of China, Determination method of total nitrogen in water

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

Professional Standard - Agriculture, Determination method of total nitrogen in water

GB 609-1988 General method for the determination of total nitrogen content of chemical reagents
GB/T 42955-2023 Determination of total nitrogen content in fertilizers Dumas combustion method
GB 10511-1989 Determination of total nitrogen content in nitrophosphate fertilizers Titration after distillation
GB/T 5009.11-1996 Determination method of total arsenic in food
GB/T 5009.17-1996 Determination method of total mercury in food
水和废水监测分析方法 5.2.4-2003 Chapter 5 Water and Wastewater Biological Monitoring Methods Chapter 2 Bacteriological Determination in Water 4 Determination of Total Bacteria in Water (B)
水和废水监测分析方法 5.2.5-2003 Chapter Five Water and Wastewater Biological Monitoring Methods Chapter Two Bacteriological Determination in Water Five Determination of Total Coliform Bacteria in Water (B)
SC/T 9444-2023 Determination of ammonia nitrogen in aquaculture water by gas phase molecular absorption spectrometry
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
82药典四部-2020 0600 Determination of physical constants 0682 Determination of total organic carbon in pharmaceutical water
101药典四部-2015 0600 Determination of physical constants 0682 Determination of total organic carbon in pharmaceutical water
NY/T 1594-2008 Determination of total dietary fiber in fruit. Non-enzymatic-Gravimetric method
2348药典二部-2010 Appendix VIII R Determination of Total Organic Carbon in Pharmaceutical Water
NY/T 30-1986 Determination of rare earth oxide content in soil.Chlorophosphonazo-p-hippuric acid photometric method
GB 6260-1986 Determination of Total Oxidized Rare Earth in Soil Spectrophotometric Method for Azochlorophosphorus Hippurate
GB/T 5009.3-1985 Method for Determination of Moisture in Food
水和废水监测分析方法 5.2.9-2003 Chapter 5 Biomonitoring Methods of Water and Wastewater Chapter 2 Bacteriological Determination in Water 9. Rapid Determination of Total Coliforms in Water and Fecal Coliforms (C)
水产品质量安全检验手册 6.14.1.3-2005 Chapter 6 Inspection of elements in aquatic products Section 14 Determination of total arsenic and inorganic arsenic in aquatic products (GBT 5009.11-2003) 1. Determination of total arsenic (3) Arsenic spot method
水产品质量安全检验手册 6.14.1.2-2005 Chapter 6 Inspection of elements in aquatic products Section 14 Determination of total arsenic and inorganic arsenic in aquatic products (GBT 5009.11-2003) 1. Determination of total arsenic (2) Silver salt method
GB 8857-1988 Method for determination of total ash and alkalinity of total ash and water-soluble ash in fruit and vegetable products

Professional Standard - Commodity Inspection, Determination method of total nitrogen in water

SN/T 3097-2012 Determination of total nitrogen in fertelezers.Combustion
SN/T 4042-2014 Determination of azide in wines for export
SN/T 2115-2008 Determination of the hotel nitrogen content and calculation of the crude protein content in food and feed for import and export.Combustion according to the Dumas principle
SN/T 1083.4-2012 Determination of total moisture in coke
SN/T 0946-2000 Method for the determination of total sediment in residual fuels for import and export
SN/T 3005-2011 Test method for instrumental determination of carbon,hydrogen,nitrogen and sulfur in organic chemicals

Professional Standard - Chemical Industry, Determination method of total nitrogen in water

HG/T 3519-2003 Industrial circulating cooling water-Determination of Benzotriazole
HG 5-1519-1985 Determination method of benzotriazole in industrial circulating cooling water
HG/T 4327-2012 Reclaimed water.Determination of total iron content.Spectrophotometric method

YU-JUS, Determination method of total nitrogen in water

JUS H.G8.447-1990 Reagents. Zine sulphate heptahydrate. Determination of total nitrogen content. Colorimetric method
JUS H.G8.298-1987 Reagents. Oxaiic acid dihydrate. Determination of total nitrogen content. Colorimetric metbod
JUS H.G8.261-1987 Reagents. Barium chloride dihydrate. Determination of total nitrogen content. Colorimetric method
JUS H.G8.064-1983 Reagents. Copper sulphate pentahydrate. Determination of total nitrogen content. Colorimetric method
JUS H.G8.280-1987 Reagents. lron(ll)sulphate heptahydrate. Determination of total nitrogen content. Colorimetric method
JUS H.G8.158-1984 Reagents. Sodium carbonate anhydrous and sodium carbonate decahydrate. Determination of total ni-trogen contont. Colorimetric method
JUS H.B8.162-1988 Fertillzets. Determination of water content in fertilizers vrith nitrogen component trom carbamide. Gravimetric metbo?
JUS C.A1.409-1982 Methods for chemical analysi$ of ferroalloys. Titrimetric determination ofnitrogen in ferro-chromium

Professional Standard - Environmental Protection, Determination method of total nitrogen in water

HJ 537-2009 Water quality.Determination of ammonia nitrogen.Distillation-neutralization titration
HJ 667-2013 Water quality.Determination of total nitrogen by continuous flow analysis (CFA) and N-(1-naphthyl)ethylene diamine dihydrochloride spectrophotometry
HJ 668-2013 Water quality.Determination of total nitrogen by flow injection analysis (FIA) and N-(1-naphthyl)ethylene diamine dihydrochloride spectrophotometry
HJ 636-2012 Water quality.Determination of total nitrogen.Alkaline potassium persulfate digestion UV spectrophotometric method
HJ 550-2009 Water quality.Determination of cobalt.5-CI-PADAB spectrophotometry

International Organization for Standardization (ISO), Determination method of total nitrogen in water

ISO 13395:1996 Water quality - Determination of nitrite nitrogen and nitrate nitrogen and the sum of both by flow analysis (CFA and FIA) and spectrometric detection
ISO 23695:2023 Water quality — Determination of ammonium nitrogen in water — Small-scale sealed tube method
ISO 23697-2:2023 Water quality — Determination of total bound nitrogen (ST-TNb) in water using small-scale sealed tubes — Part 2: Chromotropic acid colour reaction
ISO 23697-1:2023 Water quality — Determination of total bound nitrogen (ST-TNb) in water using small-scale sealed tubes — Part 1: Dimethylphenol colour reaction
ISO 10704:2009 Water quality - Measurement of gross alpha and gross beta activity in non-saline water - Thin source deposit method

ZA-SANS, Determination method of total nitrogen in water

SANS 13395:1996 Water quality - Determination of nitrite nitrogen and nitrate nitrogen and the sum of both by flow analysis (CFA and FIA) and spectrometric detection
SANS 579:2005 Coke - Determination of total moisture
SANS 589:2005 Hard coal - Determination of total moisture

Anhui Provincial Standard of the People's Republic of China, Determination method of total nitrogen in water

DB34/T 2135-2014 Determination method of carbon, hydrogen and nitrogen in coal thermal conductivity method
DB34/T 2004-2013 Determination method of lactic acid in yellow pulp water

PH-BPS, Determination method of total nitrogen in water

PTS 98-1970 Standardization of the Method of Test for the Determination of Total Nitrogen Content.Devarda 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, Determination method of total nitrogen in water

GB/T 34003-2017 Detection method of impurity elements in boron nitride
GB/T 35151-2017 Determination of total organic carbon in limestone
GB/T 34500.5-2017 Chemical analysis methods for rare earth residue and waste water—Part 5：Determination of ammonia nitrogen content

BE-NBN, Determination method of total nitrogen in water

NBN V 21-013-1978 Determination of the total nitrogen contaimng substances content of milk - Amido black method
NBN T 94-301-1976 Determination of nitrogen dioxyde contents of ambient air -Griess-Saltzman method
NBN T 94-302-1976 Determination of nitrogen oxydes and of nitrogen monoxyde contents of ambient air - Griess-Saltzman method

Henan Provincial Standard of the People's Republic of China, Determination method of total nitrogen in water

DB41/T 1704-2018 Determination of total nitrogen content in compound fertilizers Dumas combustion method

未注明发布机构, Determination method of total nitrogen in water

BS 4267-2:1988(1999) Ammonium nitrate — Part 2 : Method for determination of total nitrogen content

NO-SN, Determination method of total nitrogen in water

NS 4865-1983 Air quality - Determination of the sum of nitrite- and nitrate-nitrogen in precipitation

Tianjin Provincial Standard of the People's Republic of China, Determination method of total nitrogen in water

DB12/T 512-2014 Determination method of nitrate nitrogen in soil samples
DB12/T 1015-2020 Determination of Nitrogen and Phosphorus in Dung Water of Dairy Farms Mid-infrared Attenuated Total Reflectance Spectrometry

Shandong Provincial Standard of the People's Republic of China, Determination method of total nitrogen in water

DB37/T 2735-2015 Determination of ammonium sulfate content in dry powder fire extinguishing agent Total nitrogen content method

Association of German Mechanical Engineers, Determination method of total nitrogen in water

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

AT-ON, Determination method of total nitrogen in water

ONORM M 6248-1988 Water quality; determlnation of Kjeldabl nitrogen; method ajter mineralization with selenium

Professional Standard - Nuclear Industry, Determination method of total nitrogen in water

EJ/T 900-1994 Determination of total β radioactivity in water Evaporation method
EJ/T 1075-1998 Determination of gross alpha activity in water thick source method
EJ/T 20091-2014 Determination of total β activity in intermediate level radioactive liquid waste and its sludge.β counting method

Fujian Provincial Standard of the People's Republic of China, Determination method of total nitrogen in water

DB35/T 2006-2021 Chemical conversion method for determination of nitrate nitrogen isotope in water
DB35/T 1144-2011 Determination of inorganic nitrogen and active phosphate in seawater by flow chemical analysis

CU-NC, Determination method of total nitrogen in water

NC 24-65-1986 Inorganic Chemical Products Nitrogen. Determination of Water Vapor Content. Aerial Water Point Method

Taiwan Provincial Standard of the People's Republic of China, Determination method of total nitrogen in water

CNS 3822-1975 Method for Determination of Gross Alpha Radiation in Polluted and Waste Water.
CNS 3823-1975 Method for Determination of Gross Beta Radiation in Polluted and Waste Water.

Professional Standard - Aviation, Determination method of total nitrogen in water

HB 5297.17-1984 Determination of Nitrogen in Titanium and Titanium Alloys by Steam Distillation
HB 5297.25-2001 Methods of chemical analysis of titanium alloys - Determination of nitrogen content by steam distillation
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

Shanxi Provincial Standard of the People's Republic of China, Determination method of total nitrogen in water

DB14/T 1099-2015 Determination of Hydrolyzable Nitrogen in Soil Alkaline Hydrolysis Distillation Potentiometric Titration
DB14/T 926-2014 Rapid Determination Method of Total Arsenic in Soil

CEN - European Committee for Standardization, Determination method of total nitrogen in water

EN ISO 8968-4:2001 Milk - Determination of Nitrogen Content - Part 4: Determination of Non-Protein Nitrogen Content
EN ISO 10704:2019 Water quality - Gross alpha and gross beta activity - Test method using thin source deposit
PD CEN/TR 17365:2019 Method for the determination of C3A in the clinker from cement analysis

Yunnan Provincial Standard of the People's Republic of China, Determination method of total nitrogen in water

DB53/T 624-2014 Determination of Nitrate Nitrogen and Nitrite Nitrogen in Coking Wastewater by Dairyler's Alloy Reduction-Neutralization Titration

IN-BIS, Determination method of total nitrogen in water

海关总署, Determination method of total nitrogen in water

SN/T 4675.32-2021 Method for determination of nitrogen stable isotope ratios in exported wines

NL-NEN, Determination method of total nitrogen in water

NEN 6482-1982 Water - Determination of the sum of ammoniacal and organically bound nitrogen according to Kjeldahl after mineralization with selenium
NEN 6481-1983 Water - Determination of the sum of ammoniacal and organically bound nitrogen according to Kjeldahl after mineralization with selenium
NEN 6646-1990 Water - Photometric determination of the content of ammonium nitrogen and of the sum of the contents of ammoniacal and organically bound nitrogen according to Kjeldahl by continuous flow analysis

Guangdong Provincial Standard of the People's Republic of China, Determination method of total nitrogen in water

DB44/T 1163-2013 Detection method of composite enzyme substrate for the total number of bacterial colonies in water

Canadian Standards Association (CSA), Determination method of total nitrogen in water

CSA Z223.24 -M1983-1983 Method for the Measurement of Nitric Oxide and Nitrogen Dioxide in Air General Instruction No 1 R(1999)

Xinjiang Provincial Standard of the People's Republic of China, Determination method of total nitrogen in water

DB65/T 602.2-2001 The determinanation of hydrolyzable nitrogen in soil

Professional Standard - Hygiene , Determination method of total nitrogen in water

WS/T 88-2012 Method for determination of total fluoride in coal and soil.Pyrohydrolysis-ion selective electrode method

BR-ABNT, Determination method of total nitrogen in water

ABNT NBR 9939-2011 Coarse aggregate - Determination of total moisture - Test method

Liaoning Provincial Standard of the People's Republic of China, Determination method of total nitrogen in water

DB21/T 2705-2016 Determination method for the total number of nitrifying bacteria in microbial powder for freshwater aquaculture
DB21/T 2071-2013 Determination method of total carbon in magnesia carbonaceous refractories

Professional Standard - Geology, Determination method of total nitrogen in water

DZ/T 0064.76-1993 Groundwater Quality Examination Methods Radiochemical Method Determination of Total α and Total β
DZ/T 0064.23-1993 Groundwater quality testing method Determination of iron by phenanthrene spectrophotometry

煤炭工业部, Determination method of total nitrogen in water

MT/T 742-1997 Determination method of chromium in coal mine water
MT/T 743-1997 Determination method of phosphorus in coal mine water

Professional Standard - Ocean, Determination method of total nitrogen in water

HY/T 263-2018 Determination of dissolved nitrous oxide in seawater—Headspace equilibrium gas chromatography method

中华人民共和国国家卫生和计划生育委员会, Determination method of total nitrogen in water

WS/T 88-1996 Method for determination of total fluorine in coal and soil.Combustion-bydrolysis-ion selective electrode method

FI-SFS, Determination method of total nitrogen in water

SFS 3003-1974

Professional Standard - Tobacco, Determination method of total nitrogen in water

YC/T 157-2001 Cigarettes---Determination of water in smoke condensates----Gas-chromatographic method
YC/T 464-2013 Cigars.Determination of water in smoke condensates.Gas-chromatographic method

TR-TSE, Determination method of total nitrogen in water

TS 3651-1981 METHODS FOR THE ANALYSIS OF WATER — DETERMINATION OF IRON CONTENT — 1,10 Phenanthroline Spectrophotometry Method

Professional Standard - Electron, Determination method of total nitrogen in water

SJ 2806-1987 Method for determination of trace Oxygen and Argon in electronic grade Hydrogen--Concentration gas chromatographic method
SJ 2804.1-1987 Method for determination of Nitrogen in electronic grade Argon--Concentration gas chromatographic method (Part one)
SJ 2804.2-1987 Method for determination of trace Nitrogen in electronic grade Argon--Concentration gas chromatographic method (Part two)
SJ 3238-1989 Method for determination of trace Nitrogen in electronic grade Argon--Argon ionization gas chromatography method
SJ 2805-1987 Method for determination of Oxygen with Argon and Nitrogen in electronic grade Hydrogen--Concentration gas chromatographic method

Professional Standard - Non-ferrous Metal, Determination method of total nitrogen in water

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 575.18-2006 Combustion-non-aqueous titration method for the determination of total carbon in bauxite ore chemical analysis

Professional Standard - Electricity, Determination method of total nitrogen in water

DL/T 2296-2021 Determination method of total mercury in coal and coal ash direct combustion method

ES-AENOR, Determination method of total nitrogen in water

国家质量监督检验检疫总局, Determination method of total nitrogen in water

SN/T 4677-2016 Determination method of azocarboxamide in exported food by high performance liquid chromatography

农业农村部, Determination method of total nitrogen in water

NY/T 3030-2016 Determination of total water-soluble sugar content in cotton by anthrone colorimetric method

Professional Standard - Light Industry, Determination method of total nitrogen in water

QB/T 2623.3-2003 Test methods of soaps Determination of total alkali content and total fatty matter content in soaps

IT-UNI, Determination method of total nitrogen in water

UNI 3711-1956

AR-IRAM, Determination method of total nitrogen in water

IRAM 12 030-1963

BELST, Determination method of total nitrogen in water

STB GOST R 51650-2001 Food stuffs. Methods for determination of benz(a)pyren fraction of total mass

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

GB/T 40904-2021 Methods for the determination of prohibited substances in furniture products and related materials—Azo dyes