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Determination of total nitrogen content samples

Determination of total nitrogen content samples, Total:496 items.

In the international standard classification, Determination of total nitrogen content samples involves: Milk and milk products, Fertilizers, Soil quality. Pedology, Fuels, Coals, General methods of tests and analysis for food products, Edible oils and fats. Oilseeds, External water conveyance systems, Water quality, Fruits. Vegetables, Animal feeding stuffs, Meat, meat products and other animal produce, Food products in general, Rubber, Protection against fire, Inorganic chemicals, Farming and forestry, Photography, Wastes, Sugar. Sugar products. Starch, Organic chemicals, Petroleum products in general, Crude petroleum, Products of the textile industry, Leather technology, Products of the chemical industry, Cereals, pulses and derived products, Raw materials for rubber and plastics, Spices and condiments. Food additives, Headgear. Clothing accessories. Fastening of clothing, Refractories, Lamps and related equipment, Biology. Botany. Zoology, Tobacco, tobacco products and related equipment, Metalliferous minerals, Equipment for entertainment, Environmental protection, Testing of metals, Lubricants, industrial oils and related products, Plastics, Non-metalliferous minerals, Air quality, Textile fibres, Wood, sawlogs and sawn timber, Paint ingredients, Analytical chemistry.

VN-TCVN, Determination of total nitrogen content samples

TCVN 5265-1990 Bee products.Determination of total nitrogen content
TCVN 7252-2003 Tobacco and tobacco products.Determination of total nitrogen content
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 6645-2000 Soil quality.Determination of total nitrogen content by dry combustion ("elemental analysis")
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
TCVN 7142-2002 Meat and meat products.Determination of total ash
TCVN 7253-2003 Tobacco and tobacco products.Determination of nitrogen protein content
TCVN 7254-2003 Tobacco and tobacco products.Determination of total phosphorus content
TCVN 7255-2003 Tobacco and tobacco products.Determination of total potassium content
TCVN 6643-2000 Soil quality.Determination of nitrate nitrogen, ammonium nitrogen and total soluble nitrogen in air-dry soils using calcium chloride solution as extractant
TCVN 7141-2002 Meat and meat products.Determination of total phosphorus content.Spectrometric method
TCVN 7256-2003 Tobacco and tobacco products.Determination of total calcium and magnesium contents
TCVN 4594-1988 Canned foods.Determination of total sugar, reducing sugar and starch content
TCVN 6641-2000 Fruits, vegetables and derived products.Determination of total sunfur dioxide content

RO-ASRO, Determination of total nitrogen content samples

STAS SR 4895-5-1997 Tobacco and tobacco products. Determination of total nitrogen content
STAS SR 13325-1995 Animal feeding stuffs - Determination of total nitrogen content and calculation of crude protein content
SR ISO 5315:1984 Fertilizers. Determination of totai nitrogen content.Titrimetric method after distilation
STAS 8613/6-1980 CONCENTRATED FOODSTUFF Determination of nitrogen content
STAS 2213/16-1976 SWEET PRODUCTS Determination of total alkaloid content
STAS 9065/7-1974 MEAT AND MEAT PRODUCTS Determination of easyly hydrolisable nitrogen content
STAS 6357-1975 MIl.K AND MILK PRODUCTS Delermination of tolal ash
STAS 4813/2-1973 BAUXITE Detenninalion of moisture content of laboratory sample
STAS SR ISO 3188:1995 Starches and derived products - Determination of nitrogen content by the Kjeldahl method-Titrimetric method
STAS 9763/4-1974 SPICKS AND CONDIMENTS Determination of total ash content
STAS SR 4895-6-1997 Tobacco and tobacco prodocts Determination of total proteins content (albumines)
STAS 9952/7-1990 Milk and milk products. Phosphor total content determination of cheese
STAS SR 9065-15-1995 Meat and meat products. Determination of total creatininecontent
STAS SR 9763-13-1996 Spices and condiments. Determination of nitrogen content by the Kjeldahl method. Spectrophotometric method
STAS 1574/20-1975 IRON ORES AND CONCENTRATES Determination of moisture content of laboratory sample
STAS SR 4895-4-1997 Tobacco and tobacco products Determination of total reducing sugas, soluble sugars and total reducing substance. Manganometric method
SR ISO 6685:1996 Chemical products for industrial use-General method for determination of iron content - 1,10 - Phenanthroline spectrophotometric method

Association Francaise de Normalisation, Determination of total nitrogen content samples

NF V04-211:1971 MILK. DETERMINATION OF TOTAL NITROGEN CONTENT. (KJELDAHL METHOD).
NF U42-416*NF EN 15478:2009 Fertilizers - Determination of total nitrogen in urea.
NF X31-111*NF ISO 11261:1995 Soil quality. Determination of total nitrogen. Modified kjeldahl method.
NF U42-151:1984 Fertilizers. Determination of total nitrogen content. Titrimetric method after distillation.
NF U42-117:1965 Products used in agriculture. Fertilizers. Determination of nitrogen content in class a nitrogenous fertilizers.
NF U42-118:1965 Products used in agriculture. Determination of nitrogen content in class B nitrogenous fertilizers.
NF U42-119:1965 Products used in agriculture. Determination of nitrogen content in class C nitrogenous fertilizers.
NF X34-117*NF EN ISO 16948:2015 Solid biofuels - Determination of total content of carbon, hydrogen and nitrogen
NF X31-418*NF ISO 13878:1998 Soil quality. Determination of total nitrogen content by dry combustion ("elemental analysis").
NF EN ISO 16948:2015 Biocombustibles solides - Détermination de la teneur totale en carbone, hydrogène et azote
NF EN 13716:2002 Agents de surface - Détermination de la teneur en azote total basique - Titrage potentiométrique
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 ISO 13878:1998 Qualité du sol - Détermination de la teneur totale en azote par combustion sèche ("analyse élémentaire")
NF U42-149*NF EN 15604:2009 Fertilizers - Determination of different forms of nitrogen in the same sample, containing nitrogen as nitric, ammoniacal, urea and cyanamide nitrogen
NF X31-115:2001 Soil quality - Sampling and storage of soil samples in view of determination of mineral nitrogen on fresh soil.
NF EN ISO 8968-1:2014 Lait et produits laitiers - Détermination de la teneur en azote - Partie 1 : méthode Kjeldahl et calcul de la teneur en protéines brutes
NF X34-117:2011 Solid biofuels - Determination of total content of carbon, hydrogen and nitrogen - Instrumental methods.
NF U42-146*NF EN 15560:2009 Fertilizers - Determination of total nitrogen in calcium cyanamide nitrate free.
NF V04-406:1992 Meat and meat products. Determination of total phosphorus content.
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 ISO 8968-4:2016 Lait et produits laitiers - Détermination de la teneur en azote - Partie 4 : détermination de la teneur en azote protéique et non protéique et calcul de la teneur en protéines vraies (Méthode de référence)
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 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 V04-402:1968 Agricultural products. Meat and meat products. Determination of total fat content.
NF V04-221-4*NF 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)
NF V03-607*NF EN ISO 3188:1994 Starches and derived products. Determination of nitrogen content by the kjeldahl method. Titrimetric method.
NF V04-407:2002 Meat, meat product and fishery products - Determination of nitrogen content and calculation of the protein content - Kjeldahl method.
NF EN 16168:2012 Boues, biodéchets traités et sols - Détermination de la teneur totale en azote par combustion sèche
NF V03-713:1984 Cereals and cereal products. Determination of total fat content.
NF EN 15604:2009 Engrais - Détermination des différentes formes d'azote dans un même échantillon contenant l'azote sous forme nitrique, ammoniacale, uréique et cyanamidique
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.
NF V03-050:1970 Agricultural food products. General directions for the determination of nitrogen with mineralization by the jkeldahl method.
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 V03-608*NF EN ISO 5378:1994 Starches and derived products. Determination of nitrogen content by the kjeldahl method. Spectrophotometric method.
NF V32-176:1989 Spices and condiments. Paprika powder. Determination of total colouring matter content.
NF V04-392:1995 BUTTER. DETERMINATION OF WATER, SOLIDS-NOT-FAT AND FAT CONTENTS ON THE SAME TEST PORTION (REFERENCE METHOD). (EUROPEAN STANDARD EN ISO 3727).
NF X43-014:2017 Air quality - Ambient air - Determination of total atmospheric deposition - Sampling - Preparation of samples prior analysis
NF V04-284*NF ISO 2962:2010 Cheese and processed cheese products - Determination of total phosphorus content - Molecular absorption spectrometric method
NF V03-613*NF EN ISO 3946:1994 Starches and derived products. Determination of total phosphorus content. Spectrophotometric method.
NF X34-126*NF EN ISO 18846:2016 Solid biofuels - Determination of fines content in samples of pellets
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 T51-702*NF EN ISO 9702:1998 Plastics. Amine epoxide hardeners. Determination of primary, secondary and tertiary amine group nitrogen content.
NF V04-284:1985 Cheese and processed cheese products. Determination of total phosphorus content. Molecular absorption spectrometric method.
NF EN 12697-28:2020 Mélanges bitumineux - Méthodes d'essai - Partie 28 : préparation des échantillons pour la détermination de la teneur en liant, de la teneur en eau et de la granularité

Professional Standard - Agriculture, Determination of total nitrogen content samples

NY/T 2542-2014 Fertilizers.Determination of total nitrogen content
GB 8572-1988 Determination of total nitrogen content in compound fertilizer
NY/T 1977-2010 Water-suluble fertilizers-Determination of total nitrogen, phosphorus and potassium content
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
NY/T 1295-2007 Determination of Flavones in Buckwheat and Its Products
NY/T 2010-2011 Determination of total flavonoids in citrus fruits and derived products

Indonesia Standards, Determination of total nitrogen content samples

SNI 13-4721-1998 Methods for determination of total nitrogen content in soils
SNI 06-6323-2000 Determination of total nitrogen content in peat
SNI 4146-2013
SNI 13-6591-2001 Determination of total sulphur content of minerals by KBr-Br2-HNO3 solution

Jilin Provincial Standard of the People's Republic of China, Determination of total nitrogen content samples

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

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China, Determination of total nitrogen content samples

GB/T 2441.1-2001 Determination of urea-Determination of total nitrogen content
GB/T 9823-1988 Method for determination of total nitrogen content in oilseed residues
GB/T 9695.11-1988 Meat and meat products--Method for determination of nitrogen content
GB/T 9695.11-2008 Meat and meat products.Determination of nitrogen content
GB/T 2441.1-2008 Determination of urea.Part 1:Total nitrogen content
GB/T 23835.12-2009 Lithium perchlorate anhydrous.Part 12:Determination of total nitrogen content
GB/T 17767.1-1999 Determination of total nitrogen content for organic-inorganic compound fertilizers
GB/T 9695.31-2008 Meat products.Determination of total sugars content
GB/T 5695.31-1991 Meat products－Method for determination of total sugars content
GB/T 9695.31-1991 Meat products—Method for determination of total sugars content
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 41965-2022 Photography—Processing waste—Determination of total amino nitrogen(microdiffusion Kjeldahl method)
GB/T 9823-2008 Inspection of grain and oils.Determination of total nitrogen content in plant oilseeds residues
GB/T 17674-2012 Determination of nitrogen in crude oil by boat-inlet chemiluminescence
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 30157-2013 Textiles.Determination of total content of lead and cadmium
GB/T 42700-2023 Textiles—Determination of total content of boron
GB/T 9695.4-1988 Meat and meat products--Method for determination of total phosphorus
GB/T 29660-2013 Determination of chromium in cosmetics
GB/T 30157-2013(英文版) Textiles—Determination of total content of lead and cadmium
GB/T 9695.4-2009 Meat and meat products.Determination of total phosphorus
GB/T 10209.1-2001 Determination of total nitrogen content for monoammonium phosphate and diammonium phosphate(Titrimetric method after distillation)
GB/T 21704-2008 Determination of non-protein-nitrogen content in milk and dairy products
GB/T 9695.7-1988 Meat and meat products--Method for determination of total fat content
GB/T 9695.7-2008 Meat and meat products.Determination of total fat 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 42490-2023 Soil quality Determination of organic carbon content and carbon isotope ratio, total nitrogen content and nitrogen isotope ratio in soil and biological samples Stable isotope ratio mass spectrometry
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 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 11131-1989 Petroleum products--Determination of total sulfur content--Lamp method
GB 11131-1989 Petroleum products--Determination of total sulfur content--Lamp method
GB/T 17674-1999 Determination of nitrogen in petroleum and petroleum products by chemiluminescence method
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 3208-1982 Micro-coulomb method for determining the total sulfur content of benzene-type products
GB/T 3208-2009 Standard test method for the total tulfur tontent in tenzene.Type products by oxidative microcoulometry
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 2389-2006 Reactive dyes. Determination of relative content of hydrolised dye comparatively standard sample
GB/T 2389-2013 Reactive dyes.Determination of relative content of hydrolised dye comparatively standard sample

Korean Agency for Technology and Standards (KATS), Determination of total nitrogen content samples

KS H ISO 1871-2013(2018) Agricultural food products ― General directions for the determination of nitrogen by the Kjeldahl method
KS M ISO 5315-2007(2012) Fertilizers－Determination of total nitrogen content－Titrimetric method after distillation
KS M ISO 5315:2007 Fertilizers-Determination of total nitrogen content-Titrimetric method after distillation
KS M ISO 5315:2013 Fertilizers－Determination of total nitrogen content－Titrimetric method after distillation
KS M ISO 16948:2021 Solid biofuels — Determination of total content of carbon, hydrogen and nitrogen
KS M ISO 6851:2002 Photography-Processing waste-Determination of total amino nitrogen-Microdiffusion Kjeldahl method
KS I ISO 13878:2009 Soil quality－Determination of total nitrogen content by dry combustion(“elemental analysis”)
KS H ISO 3188-2008(2018) Starches and derived products－Determination of nitrogen content by the Kjeldahl method－Titrimetric method
KS M 2112-2011(2016) Crude petroleum and petroleum products —Determination of nitrogen content
KS M 2112-2011(2021) Crude petroleum and petroleum products —Determination of nitrogen content
KS M 2112-1986 Crude petroleum and petroleum products —Determination of nitrogen content
KS H ISO 5378-2008(2018) Starches and derived products－Determination of nitrogen content by the Kjeldahl method－Spectrophotometric method
KS M 2112-2011 Crude petroleum and petroleum products-Determination of nitrogen content
KS M ISO 15672:2007 Rubber and rubber additives－Determination of total nitrogen content using an automatic analyser
KS M ISO 15672-2007(2017) Rubber and rubber additives－Determination of total nitrogen content using an automatic analyser
KS M ISO 15672-2007(2022) Rubber and rubber additives－Determination of total nitrogen content using an automatic analyser
KS H ISO 3188:2008 Starches and derived products－Determination of nitrogen content by the Kjeldahl method－Titrimetric method
KS H ISO 1871:2013 Agricultural food products ― General directions for the determination of nitrogen by the Kjeldahl method
KS H ISO 1871:2008 Agricultural food products-General directions for the determination of nitrogen by the Kjeldahl method
KS H ISO 7302:2004 Cereals and cereal products－Determination of total fat content
KS H ISO 7302:2009 Cereals and cereal products－Determination of total fat content
KS E 3906-2017(2022) Copper scraps for smelting－Methods for sampling, sample preparation and determination of moisture content
KS H ISO 5378:2008 Starches and derived products－Determination of nitrogen content by the Kjeldahl method－Spectrophotometric method
KS H ISO 3946-2008(2018) Starches and derived products－Determination of total phosphorus content－Spectrophotometric method
KS M ISO 18846:2021 Solid biofuels — Determination of fines content in samples of pellets
KS M ISO 9702:2002 Plastics－Amine epoxide hardners－Determination of primary, secondary and tertiary amine group nitrogen content
KS H ISO 3946:2008 Starches and derived products－Determination of total phosphorus content－Spectrophotometric method
KS H ISO 2962:2021 Cheese and processed cheese products — Determination of total phosphorus content — Molecular absorption spectrometric method

YU-JUS, Determination of total nitrogen content samples

JUS H.B8.288-1983 Fertilizers. Determination of content total-nitrogen. Volumetric method
JUS H.G8.457-1991 Reagents. Potassium sulpbate. Determination of total nltrogen content. Colorlmetrlc metho?
JUS H.G8.083-1983 Reagents. Sodium chloride. Determination of total nitrogen content. Colorimetric method
JUS H.G8.435-1990 Reaqents. Potassium iodide. Determination of total nitroaen content. Colorimetric method
JUS H.G8.055-1983 Reagents. Hydrogen peroxide. Determination of total nitrogen content. Colorimetric method
JUS H.G8.290-1987 Reagents. Copper(ll) oxide. Determination of total nitrogen content. Colorimetric method
JUS H.G8.415-1991 Reagents. So?ium hydroxide. Determination of total nitrogen content. Colorimetric method
JUS H.G8.104-1984 Reagents. Potassium chloride. Determination of total nitrogen content. Colorimetric method
JUS H.G8.343-1988 Reagents. Zine chloride. Determination of total nitrogen content. Colorinetcic metbod
JUS E.Z8.016-1993 Soups,broaths,sauces and seasonings - Determination of total nitrogen content
JUS H.G8.447-1990 Reagents. Zine sulphate heptahydrate. Determination of total nitrogen content. Colorimetric method
JUS H.G8.489-1991 Reagents. Potassium permanganate. Determination of total nitrogen content. Colorimetric method
JUS H.G8.514-1991 Reagents. Potassium hydroxide. 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

RU-GOST R, Determination of total nitrogen content samples

GOST EN 15478-2013 Fertilizers. Determination of total nitrogen in urea
GOST 34111-2017 Juice products. Determination of nitrogen content by Kjeldahl method
GOST 30181.3-1994 Mineral fertilizers. Method for determination of mass fraction of nitrogen in fertilizers with nitrate nitrogen
GOST R 55331-2012 Milk and milk products. Titrimetric method of calcium content determination
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 EN 15561-2013 Fertilizers. Determination of total nitrogen in calcium cyanamide containing nitrates
GOST 13301-1967 Organic chemical products. Method of test for microdetermination of nitrogen
GOST 32008-2012 Meat and meat products. Determination of nitrogen content (Reference method)
GOST R 55246-2012 Milk and milk products. Determination of non-protein nitrogen content by Kjeldahl method
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 EN 15560-2013 Fertilizers. Determination of total nitrogen in calcium cyanamide nitrate free
GOST 29302-1992 Ammonium nitrate for industrial use. Method for determination of total nitrogen content (titrimetric) after distillation
GOST 9794-2015 Meat products. Methods for the determination of total phosphorus 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 R 50453-1992 Meat and meat products. Determination of nitrogen content (Reference method)
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 33977-2016 Fruit and vegetable products. Methods for determination of total solids content
GOST 28878-1990 Spices and condiments. Determination of total ash
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 27894.3-1988 Peat and products of its proccesing for agriculture. Methods for determination of ammonia nitrogen
GOST 30181.1-1994 Mineral fertilizers. Method for determination of total overall mass fraction of nitrogen in compound fertilizers (in ammonium and amide forms, with deammoniation)
GOST 30181.2-1994 Mineral fertilizers. Method for determination of total mass fraction of nitrogen in single - component fertlizers (in ammonium and amide forms, no deammoniation)
GOST ISO/TS 17837-2013 Processed cheese products. Determination of nitrogen content and crude protein calculation. Kjeldahl method
GOST 30181.9-1994 Mineral fertilizers. Method for determination of total mass fraction of nitrogen in compound fertilizers (distillation method using the chromium reduction of nitrate nitrogen and mineralization of organic nitrogen)

International Organization for Standardization (ISO), Determination of total nitrogen content samples

ISO 3099:1974 Oilseed residues — Determination of total nitrogen content
ISO 5315:1984 Fertilizers; Determination of total nitrogen content; Titrimetric method after distillation
ISO 16948:2015 Solid biofuels - Determination of total content of carbon, hydrogen and nitrogen
ISO 3331:1975 Ammonium nitrate for industrial use — Determination of total nitrogen content — Titrimetric method after distillation
ISO 1871:2009 Food and feed products - General guidelines for the determination of nitrogen by the Kjeldahl method
ISO 29541:2010 Solid mineral fuels - Determination of total carbon, hydrogen and nitrogen content - Instrumental method
ISO 15604:2016 Fertilizers - Determination of different forms of nitrogen in the same sample, containing nitrogen as nitric, ammoniacal, urea and cyanamide nitrogen
ISO 937:1978 Meat and meat products; Determination of nitrogen content (Reference method)
ISO/TS 17837:2008 | IDF/RM 25: 2008 Processed cheese products — Determination of nitrogen content and crude protein calculation — Kjeldahl method
ISO/TS 12902:2001 Solid mineral fuels - Determination of total carbon, hydrogen and nitrogen - Instrumental methods
ISO/CD 29541:1976 Solid mineral fuels — Determination of total carbon, hydrogen and nitrogen content — Instrumental method
ISO/FDIS 937 Meat and meat products — Determination of nitrogen content — Reference method
ISO/DIS 937 Meat and meat products — Determination of nitrogen content — Reference method
ISO 937:2023 Meat and meat products — Determination of nitrogen content — Reference method
ISO 23776:2021 Meat and meat products - Determination of total phosphorous content
ISO 15672:2000 Rubber and rubber additives - Determination of total nitrogen content using an automatic analyser
ISO 8968-4:2016 | IDF 20-4:2016 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)
ISO 914:1977 Sulphuric acid and oleum for industrial use; Determination of total nitrogen content; Titrimetric method after distillation
ISO 2192:1973 Title missing - Legacy paper document
ISO 1443:1973 Meat and meat products; Determination of total fat content
ISO 2192:1984 Petroleum products — Determination of total sulfur content — Lamp method
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 3188:1978 Starches and derived products; Determination of nitrogen content by the Kjeldahl method; Titrimetric method
ISO 6851:2001 Photography - Processing waste - Determination of total amino nitrogen (microdiffusion Kjeldahl method)
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)
ISO 1871:1975 Agricultural food products; General directions for the determination of nitrogen by the Kjeldahl method
ISO 8968-1:2014 | IDF 20-1:2014 Milk and milk products — Determination of nitrogen content — Part 1: Kjeldahl principle and crude protein calculation
ISO 7302:1982 Cereals and cereal products; Determination of total fat content
ISO 2294:1974 Meat and meat products; Determination of total phosphorus content (Reference method)
ISO 13730:1996 Meat and meat products - Determination of total phosphorus content - Spectrometric method
ISO 6851:1987 Photography; Processing waste; Determination of total amino nitrogen; Microdiffusion Kjeldahl method
ISO/TS 17837:2008 Processed cheese products - Determination of nitrogen content and crude protein calculation - Kjeldahl method
ISO/TS 17837:2008|IDF/RM 25:2008 Determination of nitrogen content and calculation of crude protein content in milk and milk products Kjeldahl method
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/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
ISO 5378:1978 Starches and derived products; Determination of nitrogen content by the Kjeldahl method; Spectrophotometric method
ISO 3727:1977 Butter; Determination of water, solids-not-fat and fat contents on the same test portion (Reference method)
ISO 5068-2:2007 Brown coals and lignites - Determination of moisture content - Part 2: Indirect gravimetric method for moisture in the analysis sample
ISO 5522:1981 Fruits, vegetables and derived products; Determination of total sulphur dioxide content
ISO 2515:1973 Ammonium hydrogen carbonate for industrial use (including foodstuffs); Determination of ammoniacal nitrogen content; Volumetric method after distillation
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 3946:1982 Starches and derived products; Determination of total phosphorus content; Spectrophotometric method
ISO/TS 17307:2016 Petroleum products — Biodiesel — Determination of total esters content by gas chromatography
ISO 310:1981 Manganese ores — Determination of hygroscopic moisture content in analytical samples — Gravimetric method

PT-IPQ, Determination of total nitrogen content samples

NP 1612-2002 Meat and meat products Determination of nitrogen content Reference method
NP 1615-2002 Meat and meat products Determination of total ash Reference method
NP 1848-1987

CEN - European Committee for Standardization, Determination of total nitrogen content samples

EN ISO 8968-4:2001 Milk - Determination of Nitrogen Content - Part 4: Determination of Non-Protein Nitrogen Content
PD CEN/TS 15604:2007 Fertilizers - Determination of different forms of nitrogen in the same sample@ containing nitrogen as nitric@ ammoniacal@ urea and cyanamide nitrogen
PD CEN/TS 15104:2005 Solid biofuels - Determination of total content of carbon@ hydrogen and nitrogen - Instrumental methods

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

GB/T 40723-2021 Rubber—Determination the contents of total sulfur and total nitrogen — Automatic analyser method
GB/T 17674-2021 Determination of nitrogen in crude oil—Boat-inlet chemiluminescence
GB/T 38086-2019 Determination of metallothionein (MT) in biological samples

CZ-CSN, Determination of total nitrogen content samples

CSN 65 4836-1983 Minerál fertilizers Methode for determination of total nitrogen content
CSN ISO 1871:1994 Agricultural food products-General directions for the determination of nitrogen by the Kjeldahl method
CSN 83 0540 Cast.13-1984 Chemical and physical analysis of waste water Determination of organic and total nitrogen
CSN 56 0065-1985 Methods of sample mineralization before the determination of heavy metals content in the foodstuffs
CSN 57 0106 Cast.3-1984 Methods for testing oí frozen milk products. Determination of total solids content.
CSN ISO 1443:1994 Meat and meat products - Determination of total fat content
CSN 57 0104 Cast.3-1984 Methods for testing of milk and liquid milk products. Determination of dry matter
CSN 57 0105 Cast.3-1978 Methods for testing of ilk and liquid mllk roducts. Determination f total solids content.

Shandong Provincial Standard of the People's Republic of China, Determination of total nitrogen content samples

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

NL-NEN, Determination of total nitrogen content samples

NEN 3442-1968 Meat and meat products. Determination of nitrogen content
NEN 6646-1990 Water - Photometric determination of the content of ammonium nitrogen and of the sum of the contents of ammoniacal and organically bound nitrogen according to Kjeldahl by continuous flow analysis
NEN 3444-1968 Meat and meat products. Determination of total fat content
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 6641-1983 Sludge - Determination of the sum of ammoniacal and organically bound nitrogen according to Kjeldahl after mineralization with selenium
NEN 6622-1988 Sludge - Determination of sand and other acidinsoluble material, and the fraction with a partiele size greater than 0,1 mm - Gravimetric method
NEN 6875-1993 Milk and milk products. Determination of Bacillus cereus content or its spores

British Standards Institution (BSI), Determination of total nitrogen content samples

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 5551-4.1.3:1986 Fertilizers. Chemical analysis. Determination of nitrogen. Method for determination of total nitrogen content (titrimetric method after distillation)
BS DD CEN/TS 15561:2007 Fertilizers - Determination of total nitrogen in calcium cyanamide containing nitrates
BS EN 15561:2009 Fertilizers - Determination of total nitrogen in calcium cyanamide containing nitrates
BS EN ISO 16948:2015 Solid biofuels. Determination of total content of carbon, hydrogen and nitrogen
BS DD CEN/TS 15604:2007 Fertilizers - Determination of different forms of nitrogen in the same sample, containing nitrogen as nitric, ammoniacal, urea and cyanamide nitrogen
DD CEN/TS 15604:2007 Fertilizers — Determination of different forms of nitrogen in the same sample, containing nitrogen as nitric, ammoniacal, urea and cyanamide nitrogen
BS EN 15604:2009 Fertilizers - Determination of different forms of nitrogen in the same sample, containing nitrogen as nitric, ammoniacal, urea and cyanamide nitrogen
BS ISO 29541:2010 Solid mineral fuels. Determination of total carbon, hydrogen and nitrogen content. Instrumental method
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
DD ISO/TS 17837:2008 Milk and milk products. Determination of nitrogen content and crude protein calculation. Kjeldahl method
BS DD CEN/TS 15560:2007 Fertilizers - Determination of total nitrogen in calcium cyanamide nitrate free
BS EN 15560:2009 Fertilizers - Determination of total nitrogen in calcium cyanamide nitrate free
BS EN 15104:2011 Solid biofuels. Determination of total content of carbon, hydrogen and nitrogen. Instrumental methods
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 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 8968-4:2016 Milk and milk products. Determination of nitrogen content. Determination of protein and non-protein nitrogen content and true protein content calculation (Reference method)
BS ISO 937:2023 Meat and meat products. Determination of nitrogen content. Reference method
BS ISO 23776:2021 Meat and meat products. Determination of total phosphorous content
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 4401-2:1980 Methods of test for meat and meat products. Determination of nitrogen content (reference method)
BS ISO 6851:2002 Photography - Processing waste - Determination of total amino nitrogen (microdiffusion Kjeldahl method)
DD ISO/TS 12902:2002 Solid mineral fuels. Determination of total carbon, hydrogen and nitrogen. Instrumental methods
BS ISO 15672:2000 Rubber and rubber additives - Determination of total nitrogen content using an automatic analyser
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
22/30444436 DC BS ISO 937. Meat and meat products. Determination of nitrogen content. Reference method
BS EN 62554:2011 Sample preparation for measurement of mercury level in fluorescent lamps
20/30400319 DC BS ISO 23776. Meat and meat products. Determination of total phosphorous content
BS 6070-1:1981 Methods of sampling and test for sodium carbonate for industrial use. Determination of total soluble alkali content
22/30458340 DC BS EN 17908. Algae and algae products. Methods of sampling and analysis. Determination of total lipids content using the Ryckebosch-Foubert method
BS EN ISO 8968-1:2014 Milk and milk products. Determination of nitrogen content. Kjeldahl principle and crude protein calculation
BS 6092-5:1981 Methods of sampling and test for sodium and potassium silicates for industrial use. Determination of total alkali content
BS EN ISO 14891:2002 Milk and milk products - Determination of nitrogen content - Routine method using combustion according to the Dumas principle
BS ISO 11722:2013 Solid mineral fuels. Hard coal. Determination of moisture in the general analysis test sample by drying in nitrogen
PD ISO/TS 17307:2016 Petroleum products. Biodiesel. Determination of total esters content by gas chromatography
BS EN ISO 1833-15:2011 Textiles. Quantitative chemical analysis. Mixtures of jute and certain animal fibres (method by determining nitrogen content)
BS EN ISO 1833-15:2010 Textiles. Quantitative chemical analysis. Mixtures of jute and certain animal fibres (method by determining nitrogen content)
BS 4401-4:1970 Methods of test for meat and meat products - Determination of total fat content
BS EN ISO 1833-15:2019 Textiles. Quantitative chemical analysis - Mixtures of jute with certain animal fibres (method by determining nitrogen content)
BS 6806:2002 Textiles - Determination of formaldehyde - Method for the determination of total and free (water extraction method) formaldehyde using chromotropic acid
BS ISO 5068-2:2007 Brown coals and lignites - Determination of moisture content - Indirect gravimetric method for moisture in the analysis sample
BS EN 10276-1:2000 Chemical analysis of ferrous materials - Determination of oxygen in steel and iron - Sampling and preparation of steel samples for oxygen determination

Professional Standard - Commodity Inspection, Determination of total nitrogen content samples

SN/T 3097-2012 Determination of total nitrogen in fertelezers.Combustion
SN/T 3382-2012 Determination of non-protein-nitrogen content in milk and dairy products for export
SN/T 3605-2013 Determination of mercury content in liquid petroleum products.Direct injection method
SN/T 3005-2011 Test method for instrumental determination of carbon,hydrogen,nitrogen and sulfur in organic chemicals

German Institute for Standardization, Determination of total nitrogen content samples

DIN ISO 11261:1997 Soil quality - Determination of total nitrogen - Modified Kjeldahl method (ISO 11261:1995)
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 CEN/TS 15561:2007 Fertilizers - Determination of total nitrogen in calcium cyanamide containing nitrates; German version CEN/TS 15561:2007
DIN EN ISO 16948:2015-09 Solid biofuels - Determination of total content of carbon, hydrogen and nitrogen (ISO 16948:2015); German version EN ISO 16948:2015
DIN ISO 13878:1998 Soil quality - Determination of total nitrogen content by dry combustion ("elemental analysis") (ISO 13878:1998)
DIN EN 15604:2009-06 Fertilizers - Determination of different forms of nitrogen in the same sample, containing nitrogen as nitric, ammoniacal, urea and cyanamide nitrogen; German version EN 15604:2009 / Note: To be replaced by DIN EN ISO 15604 (2019-06).
DIN EN 15604:2009 Fertilizers - Determination of different forms of nitrogen in the same sample, containing nitrogen as nitric, ammoniacal, urea and cyanamide nitrogen; English version of DIN EN 15604:2009-06
DIN CEN/TS 15604:2008 Fertilizers - Determination of different forms of nitrogen in the same sample, containing nitrogen as nitric, ammoniacal, urea and cyanamide nitrogen; German version CEN/TS 15604:2007
DIN 53308:1968 Testing of leather; determination of the contents of total nitrogen and of ammonium salts, calculation of hide substance
DIN CEN/TS 15560:2007 Fertilizers - Determination of total nitrogen in calcium cyanamide nitrate free; German version CEN/TS 15560:2007
DIN EN ISO 3188:1994-10 Starches and derived products - Determination of nitrogen content by the Kjeldahl method - Titrimetric method (ISO 3188:1978); German version EN ISO 3188:1994
DIN EN ISO 8968-4:2016-09 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) (ISO 8968-4:2016); German version EN ISO 8968-4:2016
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 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 5378:1994-10 Starches and derived products - Determination of nitrogen content by the Kjeldahl method - Spectrophotometric method (ISO 5378:1978); German version EN ISO 5378:1994
DIN ISO 14255:1998 Soil quality - Determination of nitrate nitrogen, ammonium nitrogen and total soluble nitrogen in air-dry soils using calcium chloride solution as extractant (ISO 14255:1998)
DIN EN ISO 14891:2002 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 ISO 8968-1:2014-06 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 16634-1:2009-07 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 ISO 16948:2015 Solid biofuels - Determination of total content of carbon, hydrogen and nitrogen (ISO 16948:2015); German version EN ISO 16948:2015
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 EN 15104:2011 Solid biofuels - Determination of total content of carbon, hydrogen and nitrogen - Instrumental methods; German version EN 15104:2011
DIN 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 (ISO 13395:1996); German version EN ISO 13395:1996
DIN 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) (ISO 8968-4:2016); German version EN ISO 8968-4:2016
DIN 51718:2002-06 Testing of solid fuels - Determination of the water content and the moisture of analysis sample
DIN ISO 3946:1986 Starches and derived products; determination of the total phosphorus content; spectrophotometric method; identical with ISO 3946, edition 1982
DIN 51718:2002 Testing of solid fuels - Determination of the water content and the moisture of analysis sample
DIN 51444:2003 Testing of petroleum products - Determination of nitrogen - Oxidative combustion method with chemiluminescence detector

European Committee for Standardization (CEN), Determination of total nitrogen content samples

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 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 15604:2009 Fertilizers - Determination of different forms of nitrogen in the same sample, containing nitrogen as nitric, ammoniacal, urea and cyanamide nitrogen
EN 15750:2009 Fertilizers - Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods
EN ISO 16948:2015 Solid biofuels - Determination of total content of carbon, hydrogen and nitrogen (ISO 16948:2015)
EN 15104:2011 Solid biofuels - Determination of total content of carbon, hydrogen and nitrogen - Instrumental methods
EN ISO 20764:2003 Petroleum and related products - Preparation of a test portion of high-boiling liquids for the determination of water content - Nitrogen purge 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)
EN 14891:2012 Liquid-applied water impermeable products for use beneath ceramic tiling bonded with adhesives - Requirements, test methods, evaluation of conformity, classification and designation (Incorporating Corrigendum November 2012)
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 3188:1994 Starches and Derived Products - Determination of Nitrogen Content by the Kjeldahl Method - Titrimetric Method
EN ISO 3946:1994 Starches and Derived Products - Determination of Total Phosphorous Content - Spectrometric Method (ISO 3946:1982)
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
EN ISO 3727:1995 Butter - Determination of Water, Solids-not-Fat and Fat Contents on the Test Portion (Reference Method) (ISO 3727 : 1977)
EN ISO 5378:1994 Starches and Derived Products - Determination of Nitrogen Content by the Kjeldahl Method - Spectrophotometric Method (ISO 5378 : 1978)
EN ISO 14891:2002 Milk and Milk Products - Determination of Nitrogen Content - Routine Method Using Combustion According to the Dumas Principle

GOSTR, Determination of total nitrogen content samples

GOST R ISO 15604-2019 Fertilizers. Determination of different forms of nitrogen in the same sample, containing nitrogen as nitric, ammoniacal, urea and cyanamide nitrogen
GOST 34454-2018 Dairy products. Determination of protein content by the Kjeldahl method

Group Standards of the People's Republic of China, Determination of total nitrogen content samples

T/GXAS 477-2023 Determination of total nitrogen content in sugarcane juice —sulphuric acid titrimetric method
T/GZCX 020-2022 Determination of total phenol content in Rosa roxburghii and its products
T/SDAQI 054-2021 Textiles - Determination of total content of lead and cadmium in metallic accessories
T/GZCX 018-2022 Determination of total flavonoids content in Rosa roxburghii and its products
T/NAIA 087-2021 Determination of Mercury Content in Coal-based Liquid Oil by Direct Sampling Method
T/CNIA 0016-2019 Determination of Hydrogen Chloride, Nitrogen, Oxygen and Total Carbon Content in Recycled Hydrogen for Polysilicon by Gas Chromatography
T/ZCSIA 7-2023 Spectrophotometric method for determination of total phenolic content in large cherries and their products
T/ZCSIA 9-2023 Determination of total flavonoid content in strawberries and their products by spectrophotometric method

Danish Standards Foundation, Determination of total nitrogen content samples

DS/EN 15604:2009 Fertilizers - Determination of different forms of nitrogen in the same sample, containing nitrogen as nitric, ammoniacal, urea and cyanamide nitrogen
DS/EN ISO 3188:1995 Starches and derived products - Determination of nitrogen content by the Kjeldahl method - Titrimetric method
DS/ISO 29541:2011 Solid mineral fuels - Determination of total carbon, hydrogen and nitrogen content - Instrumental method
DS/EN 15104:2011 Solid biofuels - Determination of total content of carbon, hydrogen and nitrogen - Instrumental methods
DS/EN ISO 5378:1995 Starches and derived products - Determination of nitrogen content by the Kjeldahl method - Spectrophometric method
DS/EN ISO 20764:2004 Petroleum and related products - Preparation of a test portion of high-boiling liquids for the determination of water content - Nitrogen purge method
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
DS/EN ISO 3946:1995 Starches and derived products - Determination of total phosphorus content - Spectrophometric method

Lithuanian Standards Office , Determination of total nitrogen content samples

LST EN 15604-2009 Fertilizers - Determination of different forms of nitrogen in the same sample, containing nitrogen as nitric, ammoniacal, urea and cyanamide nitrogen
LST EN 15104-2011 Solid biofuels - Determination of total content of carbon, hydrogen and nitrogen - Instrumental methods
LST EN ISO 3188:2000 Starches and derived products - Determination of nitrogen content by the Kjeldahl method - Titrimetric method (ISO 3188:1978)
LST EN ISO 16948:2015 Solid biofuels - Determination of total content of carbon, hydrogen and nitrogen (ISO 16948:2015)
LST EN ISO 5378:2000 Starches and derived products - Determination of nitrogen content by the Kjeldahl method - Spectrophotometric method (ISO 5378:1978)
LST ISO 937:2000 Meat and meat products. Determination of nitrogen content (Reference method) (idt ISO 937:1978(E))
LST ISO 1443:2000 Meat and meat products. Determination of total fat content (idt ISO1443:1973(E))
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)
LST ISO 2294:2000 Meat and meat products. Determination of total phosphorus content (Reference method) (idt ISO 2294:1974(E))
LST ISO 5522:1997 Fruits, vegetables and derived products. Determination of total sulphur dioxide content

AENOR, Determination of total nitrogen content samples

UNE-EN 15604:2009 Fertilizers - Determination of different forms of nitrogen in the same sample, containing nitrogen as nitric, ammoniacal, urea and cyanamide nitrogen
UNE 77325:2003 Soil quality. Determination of total nitrogen content by dry combustion ("elemental analysis").
UNE-EN ISO 3188:1995 STARCHES AND DERIVED PRODUCTS. DETERMINATION OF NITROGEN CONTENT BY THE KJELDAHL METHOD. TITRIMETRIC METHOD. (ISO 3188:1978).
UNE 40228-7:1974 DETERMINATION OF THE CONTENT IN VEGETABEL MATTER ANDOF THE TOTAL OF INSOLUBLE IMPURITIES IN ALKALI OF WASHED WOOL SUBSAMPLES.
UNE 40228-5:1974 DETERMINATION OF ASH CONTENT IN SUBSAMPLES OF WASHED WOOL.
UNE-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)
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 53375-1:2007 Plastics. Determination of carbon black content of polyolefins and its products. Part 1: Nitrogen atmosphere test
UNE-EN ISO 5378:1995 STARCHES AND DERIVED PRODUCTS. DETERMINATION OF NITROGEN CONTENT BY THE KJELDHAL METHOD. SPECTROPHOTOMETRIC METHOD. (ISO 5378:1978).

KR-KS, Determination of total nitrogen content samples

KS M ISO 16948-2021 Solid biofuels — Determination of total content of carbon, hydrogen and nitrogen
KS H ISO 7302-2004 Cereals and cereal products－Determination of total fat content
KS M ISO 18846-2021 Solid biofuels — Determination of fines content in samples of pellets
KS H ISO 2962-2021 Cheese and processed cheese products — Determination of total phosphorus content — Molecular absorption spectrometric method

未注明发布机构, Determination of total nitrogen content samples

BS 4267-2:1988(1999) Ammonium nitrate — Part 2 : Method for determination of total nitrogen content
BS EN ISO 3188:1994(1999) Starches and derived products — Determination of nitrogen content by the Kjeldahl method — Titrimetric method
BS EN ISO 5378:1994(1999) Starches and derived products — Determination of nitrogen content by the Kjeldahl method — Spectrometric method
BS EN ISO 8968-4:2016(2017) 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)
BS EN ISO 3946:1994(2000) Starches and derived products — Determination oftotal phosphorous content — Spectrometric method

ES-UNE, Determination of total nitrogen content samples

UNE-EN ISO 16948:2015 Solid biofuels - Determination of total content of carbon, hydrogen and nitrogen (ISO 16948:2015)
UNE-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) (ISO 8968-4:2016)
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)

BE-NBN, Determination of total nitrogen content samples

NBN V 21-013-1978 Determination of the total nitrogen contaimng substances content of milk - Amido black method
NBN T 03-056-1979 Ammonium nitrate for industrial use - Determination of total nitrogen content - Titrimetric method after distillation
NBN-EN ISO 5378:1994 Starches and derived products - Determination of nitrogen content by the Kjeldahl method - Spectrophotometric method (ISO 5378:1978)
NBN-EN ISO 3188:1994 Starches and derived products - Determination of nitrogen content by the Kjeldahl method - Titrimetric method (ISO 3188:1978)
NBN T 03-081-1979 Ammonium hydrogen carbonate for industrial use (including food-stuffs) - Determination of ammoniacal nitrogen content - Titrimetric method after distillation

Professional Standard - Petrochemical Industry, Determination of total nitrogen content samples

NB/SH/T 0704-2010 Standard test method for nitrogen in petroleum and petroleum products by boat-inlet chemiluminescence
SH/T 0704-2001 Standard test method for nitrogen in petroleum and petroleum products by boat-inlet chemiluminescence
SH/T 0253-1992 Determination of total sulfur content in light petroleum products (electrical method)
SH/T 0171-1992 Method for Determination of Nitrogen Content in Petroleum and Petroleum Products (Thymol Colorimetric Method)

Tianjin Provincial Standard of the People's Republic of China, Determination of total nitrogen content samples

DB12/T 1023-2020 Determination of total nitrogen content in organic fertilizers Dumas combustion method

Japanese Industrial Standards Committee (JISC), Determination of total nitrogen content samples

JIS K 2609:1998 Crude petroleum and petroleum products -- Determination of nitrogen content
JIS M 8082:1999 Copper scraps for smelting -- Methods for sampling, sample preparation and determination of moisture content
JIS M 8082 AMD 1:2015 Copper scraps for smelting -- Methods for sampling, sample preparation and determination of moisture content (Amendment 1)

SE-SIS, Determination of total nitrogen content samples

SIS SS 02 81 33-1991 Determination of the sum of the nitrite and nitrate nitrogen content of water
SIS SS-ISO 2192:1987 Petroleum products - Determination of total sulfur content - Lamp method
SIS SS 18 71 84-1990 Biofuels and peat — Determination of moisture content in the analysis sample

PL-PKN, Determination of total nitrogen content samples

PN A86026-1990 Milk and dairy products Milk powdcr Determination of nitritc and nitrate contents
PN A79120-07-1990 Wines and meads Preparation of samples and testing methods Determination of total acidity content
PN A75101-23-1990 Fruit and vegetable products Preparation of samples and testing methods Determination of total sulphur dioxide content
PN A79120-09-1990 Wines and meads Preparation of samples and testing methods Determination of ash content
PN A75101-08-1990 Fruit and vegetable products Preparation of samples and testing methods Determination of total ash content and its alkalinity
PN C82055-20-1992 Test methods of pressed carbon products Determination of total sulphur content
PN A79120-05-1990 Wines and meads Preparation of samples and testing methods Determination of total extract and non-sugar extract content
PN A75101-09-1990 Fruit and vegetable products Preparation of samples and testingmethods Determination of ethanol content
PN A75101-10-1990 Fruit and vegetable products Preparation of samples and testing methods Determination of chloride content
PN A75101-12-1990 Fruit and vegetable products Preparation of samples and testing methods Determination of carotenoids and /3-carotene content
PN A75108-1986 Fruits vegetables and derived products Determination of total sulphur dioxide content
PN A75101-26-1990 Fruit and vegetable products Preparation of samples and testing methods Determination of formic acid content
PN A75101-03-1990 Fruit and vegetable products -- Preparation of samples and physical and chemical test methods -- Determination of dry matter content by gravimetric method

Canadian Standards Association (CSA), Determination of total nitrogen content samples

CAN/CSA-ISO 16948:2015 Solid biofuels - Determination of total content of carbon, hydrogen and nitrogen (First Edition)

Henan Provincial Standard of the People's Republic of China, Determination of total nitrogen content samples

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

CU-NC, Determination of total nitrogen content samples

NC 24-64-1986 Inorganic Chemical Products Nitrogen, Determination of Oil Content
NC 24-65-1986 Inorganic Chemical Products Nitrogen. Determination of Water Vapor Content. Aerial Water Point Method
NC 28-08-1987 Fertilxzers. Mixed, Granulated and Complex Fertilizers. Determination of Total Nitrogen, Assimilable Phosphorus and Potassium by the Weighing Method

AT-ON, Determination of total nitrogen content samples

ONORM S 7009-1982 Testing of leather; determination of the contents of total nitrogen and of ammonium salts; calculation of hide substance
ONORM N 4002-1994 Testing of meat and meat products - Determination of total tat content - Reference method (gravimetric)

ZA-SANS, Determination of total nitrogen content samples

SANS 12902:2007 Solid mineral fuels - Determination of total carbon, hydrogen and nitrogen - Instrumental methods
SANS 5983:2000 Preparation of test specimens for moisture content determination in timber and timber products
SANS 5983:2008 Preparation of test specimens for moisture content determination in timber and timber products

American Society for Testing and Materials (ASTM), Determination of total nitrogen content samples

ASTM E258-67(2002) Standard Test Method for Total Nitrogen in Organic Materials by Modified Kjeldahl Method
ASTM D5368-93(2001) Standard Test Methods for Gravimetric Determination of Total Solvent Extractable Content (TSEC) of Solid Waste Samples
ASTM D5368-93 Standard Test Methods for Gravimetric Determination of Total Solvent Extractable Content (TSEC) of Solid Waste Samples
ASTM D5368-93(2006) Standard Test Methods for Gravimetric Determination of Total Solvent Extractable Content (TSEC) of Solid Waste Samples
ASTM D5368-13 Standard Test Methods for Gravimetric Determination of Total Solvent Extractable Content (TSEC) of Solid Waste Samples
ASTM D5762-12(2017) Standard Test Method for Nitrogen in Petroleum and Petroleum Products by Boat-Inlet Chemiluminescence
ASTM E258-07 Standard Test Method for Total Nitrogen in Organic Materials by Modified Kjeldahl Method
ASTM D3228-08(2014) Standard Test Method for Total Nitrogen in Lubricating Oils and Fuel Oils by Modified Kjeldahl Method
ASTM D4309-96 Standard Practice for Sample Digestion Using Closed Vessel Microwave Heating Technique for the Determination of Total Metals in Water
ASTM D4309-02 Standard Practice for Sample Digestion Using Closed Vessel Microwave Heating Technique for the Determination of Total Metals in Water
ASTM E1644-04 Standard Practice for Hot Plate Digestion of Dust Wipe Samples for the Determination of Lead
ASTM E1728-10 Standard Practice for Collection of Settled Dust Samples Using Wipe Sampling Methods for Subsequent Lead Determination

商业部, Determination of total nitrogen content samples

SB/T 10010-1992 Determination of total sugar content in frozen drinks
SB/T 10009-1992 Determination of total solids content in frozen beverages

HU-MSZT, Determination of total nitrogen content samples

MSZ 21976/8-1982

Standard Association of Australia （SAA）, Determination of total nitrogen content samples

AS ISO 8968.4:2021 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)
AS ISO 8968.1:2021 Milk and milk products — Determination of nitrogen content, Part 1: Kjeldahl principle and crude protein calculation

International Dairy Federation (IDF), Determination of total nitrogen content samples

IDF 20-1-2014 Milk and milk products - Determination of nitrogen content - Part 1: Kjeldahl principle and crude protein calculation
IDF/RM 25-2008 Milk and milk products - Determination of nitrogen content and crude protein calculation - Kjeldahl method

American National Standards Institute （ANSI), Determination of total nitrogen content samples

ANSI/PIMA IT4.47-1998 Photography (Processing) - Effluents - Determination of Total Amino Nitrogen - Microdiffusion Kjeldahl Method

Professional Standard - Energy, Determination of total nitrogen content samples

NB/SH/T 0253-2021 Coulometry for Determination of Total Sulfur Content in Light Petroleum Products

TR-TSE, Determination of total nitrogen content samples

TS 1129-1972 FRUIT AND VEGETABLE PRODUCTS DETERMINATION OF TOTAL SOLIDE
TS 2918-1978 PHOSPHORIC ACID FOR INDUSTRIAL USE (INCLUDING FOODSTUFFS) — DETERMINATION OF OXIDES OF NITROGEN CONTENT — 3,4 — XYLENOL SPECTROPHOTOMETRY

Taiwan Provincial Standard of the People's Republic of China, Determination of total nitrogen content samples

CNS 6611-2008 Method of test for meat and meat products - Determination of total phosphorus content
CNS 12957-2007 Method of test for milk and milk products - Determination of total phosphorus content in edible cheese
CNS 6392-2008 Method of test for meat and meat products - Determination of total fat content
CNS 12957-1992 Method of Test for Milk and Milk Products:Determination of Total Phosphorus Content
CNS 14573-2001 Starches and derived products－Determination of total phosphorus content－Spectrophotometric method

Professional Standard - Ferrous Metallurgy, Determination of total nitrogen content samples

YB/T 174.1-2000 Chemical analysis for silicon nitride bonded silicon carbide product.Determination of silicon nitride content.High pressure dissolve specimen method

Professional Standard - Non-ferrous Metal, Determination of total nitrogen content samples

YS/T 587.15-2023 Calcined coke for prebaked blocks— Part 15: Determination of total carbon,hydrogen and nitrogen contents

Professional Standard - Tobacco, Determination of total nitrogen content samples

YC/T 166-2003 Tobacco and tobacco products-Determination of total proteins content (Albumins)

IN-BIS, Determination of total nitrogen content samples

ES-AENOR, Determination of total nitrogen content samples

UNE 55-595-1981

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 of total nitrogen content samples

GB/T 22788-2016 Determination of total lead content in material of toys and children’s products

BELST, Determination of total nitrogen content samples

STB 17.13.05-49-2021 Еnvironmental pгоtесtion аnd nature use. Sampling and measurements, monitoring. Water quality. Determination of the mass concentration of nitrogen-containing substances using photometric tests

Professional Standard - Geology, Determination of total nitrogen content samples

DZ/T 0279.29-2016 Methods of Analysis of Regional Geochemical Samples Part 29: Nitrogen Determination Kjeldahl Distillation - Volumetric Method

Anhui Provincial Standard of the People's Republic of China, Determination of total nitrogen content samples

DB34/T 2743-2016 Spectrophotometric method for determination of total flavonoids content in Huai Mi and its products