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Determination principle of total nitrogen content

Determination principle of total nitrogen content, Total:483 items.

In the international standard classification, Determination principle of total nitrogen content involves: Milk and milk products, Fertilizers, Products of the chemical industry, Meat, meat products and other animal produce, Spices and condiments. Food additives, Soil quality. Pedology, Fuels, Coals, Edible oils and fats. Oilseeds, Animal feeding stuffs, General methods of tests and analysis for food products, External water conveyance systems, Water quality, Petroleum products in general, Rubber, Cereals, pulses and derived products, Protection against fire, Inorganic chemicals, Farming and forestry, Photography, Wastes, Powder metallurgy, Metalliferous minerals, Crude petroleum, Raw materials for rubber and plastics, Leather technology, Organic chemicals, Ceramics, Paints and varnishes, Non-metalliferous minerals, Ferrous metals, Textile auxiliary materials, Ferroalloys, Analytical chemistry, Beverages, Testing of metals, Lubricants, industrial oils and related products, Plastics, Refractories, Nuclear energy engineering, Iron and steel products, Natural gas, Non-ferrous metals.

Association Francaise de Normalisation, Determination principle of total nitrogen content

NF V04-211:1971 MILK. DETERMINATION OF TOTAL NITROGEN CONTENT. (KJELDAHL METHOD).
NF V59-202:1988 Collagenes. Determination of the nitrogen content.
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 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 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 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 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 EN 16168:2012 Boues, biodéchets traités et sols - Détermination de la teneur totale en azote par combustion sèche
NF ISO 13878:1998 Qualité du sol - Détermination de la teneur totale en azote par combustion sèche ("analyse élémentaire")
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 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 A20-409:1990 Iron ores. Determination of total iron content. Silver reduction titrimetric method.
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 EN ISO 14891:2003 Lait et produits laitiers - Détermination de la teneur en azote - Méthode pratique par combustion selon le principe de Dumas
NF A95-181-4:1993 Metallic powders. Determination of oxygen content by reduction methods. Part 4: total oxygen by reduction-extraction
NF T45-133:1990 RAW MATERIALS FOR THE RUBBER INDUSTRY. DETERMINATION OF THE TOTAL SULPHUR CONTENT OF CARBON BLACK.
NF A20-410*NF ISO 9507:1990 Iron ores. Determination of total iron content. Titanium (III) chloride reduction methods.
NF A95-181-4:2013 Metallic powders - Determination of oxygen content by reduction methods - Part 4: total oxygen by reduction-extraction
NF A95-181-4*NF EN ISO 4491-4:2019 Metallic powders - Determination of oxygen content by reduction methods - Part 4 : total oxygen by reduction-extraction
NF T30-201:1981 Paints and varnishes. Determination of total lead. Flame atomic absorption 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.
NF V03-088*NF EN 14546:2005 Foodstuffs - Determination of trace elements - Determination of total arsenic by hydride generation atomic absorption spectrometry (HGAAS) after dry ashing
NF A06-341-2*NF EN ISO 4829-2:2016 Steel - Determination of total silicon content - Reduced molybdosilicate spectrophotometric method - Part 2 : silicon contents between 0,01% and 0,05 %
NF EN ISO 2613-1:2023 Analyse du gaz naturel - Teneur en silicium du biométhane - Partie 1 : détermination de la teneur totale en silicium par spectrométrie d'émission atomique (SEA)
NF X31-505:1992 Soil quality - Physical methods - Method for determining the bulk volume and the water content of lumps of earth
NF T30-217:1983 Paints and varnisches. Determination of total mercury. Flameless atomic absorption spectroscopic method.
NF V03-095*NF EN 14627:2005 Foodstuffs - Determination of trace elements - Determination of total arsenic and selenium by hydride generation atomic absorption spectrometry (HGAAS) after pressure digestion.
NF A06-341-2:1990 Steel and cast iron. Determination of total silicon content. Reduced molybdosilicate spectrophotometric method. Part 2 : silicon contents between 0,01 and 0,05 per cent.
NF T90-131:1986 TESTING WATER. DETERMINATION OF TOTAL MERCURY BY FLAMELESS ATOMIC ABSORPTION SPECTROMETRY. METHOD AFTER DIGESTION WITH BROMINE.
NF V03-713:2010 Cereals, cereals-based products and animal feeding stuffs - Determination of crude fat and total fat content by the Randall extraction method.
NF A06-341-1*NF EN ISO 4829-1:2018 Steelsand cast iron - Determination of total silicon contents - Reduced molybdosilicate spectrophotometric method - Part 1 : silicon contents between 0,05 % and 1,0 %
NF A06-341-1:1990 Steel and cast iron. Determination of total silicon content. Reduced molybdosilicate spectrophotometric method. Part 1 : silicon contents between 0,05 and 1,0 per cent.
NF A22-405*NF ISO 7990:1986 Manganese ores and concentrates. Determination of total iron content. Titrimetric method after reduction and sulfosalicylic acid spectrophotometric method.
NF EN ISO 21068-2:2008 Analyse chimique des matières premières et des produits réfractaires contenant du carbure de silicium - Partie 2 : détermination de la perte au feu, du carbone total, du carbone libre et du carbure de silicium, de la silice totale et libre, et du s...
NF T52-138:1979 Plastics. Basic materials for polyurethanes. Determination of total chloride in pure and raw isocyanates.

Professional Standard - Agriculture, Determination principle of total nitrogen content

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
SN/T 5065-2018 Determination of total lead content in toy base materials by flame atomic absorption spectrometry

VN-TCVN, Determination principle of total nitrogen content

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 6645-2000 Soil quality.Determination of total nitrogen content by dry combustion ("elemental analysis")
TCVN 4594-1988 Canned foods.Determination of total sugar, reducing sugar and starch 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 4653-1-2009 Iron ores.Determination of total iron.content.Part 1: Titrimetric method after tin(Ⅱ) chloride reduction
TCVN 6555-2011 Cereals, cereals-based products and animal feeding stuffs.Determination of crude fat and total fat content by the Randall extraction method

Indonesia Standards, Determination principle of total nitrogen content

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 6989.17-2009

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

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 principle of total nitrogen content

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 2441.1-2008 Determination of urea.Part 1:Total nitrogen content
GB/T 21318-2009 Determination of total nirogen content in animal feeding stuffs by combustion according to the Dumas principle and calculation o the crude protein content
GB/T 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 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 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 17674-1999 Determination of nitrogen in petroleum and petroleum products by chemiluminescence method
GB/T 10209.1-2001 Determination of total nitrogen content for monoammonium phosphate and diammonium phosphate(Titrimetric method after distillation)
GB/T 5158.4-2011 Metallic powders—Determination of oxygen content by reduction methods—Part 4:Total oxygen by reduction-extraction
GB/T 5158.4-2001 Metallic powders--Determination of total oxygen content by reduction-extraction
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 5158.1-2011 Metallic powders.Determination of oxygen content by reduction methods.Part 1: General guidelines
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 5543-1985 Resin finishing agent--Determination of total formaldehyde content
GB 5543-1985 Resin finishing agent－Determination of total formaldehyde content
GB/T 5543-2006 Resin finishing agent.Determination of total formaldehyde content、free formaldehyde content and methylol formadehyde content
GB/T 13452.1-1992 Paints and varnishes--Determination of total lead--Flame atomic absorption spectrometric method
GB/T 23772-2009 Inorganic chemicals for industrial use.General method for the determination of total nitrogen content.Nessler's reagent colorimetric method
GB/T 24583.8-2009 Vanadium-Nitrogen alloy.Determination of silicon，manganese，phosphorus，aluminum content.Inductively coupled plasma atomic emission spectrometric method
GB 9758.6-1988 Paints and varnishes - Determination of "soluble" metal content - Part 6: Determination of total chromium content in the liquid part of paints by flame atomic absorption spectrometry
GB/T 9758.6-1988 Paints and varnishes--Determination of "soluble" metal content--Part 6:Determination of total chromium content of the liquid portion of the paint--Flame atomic absorption spectrometric method
GB/T 6609.4-2004 Chemical analysis methods and determination of physical performance of alumina Determination of ferric oxide content-Orthophenanthroline photometric method

YU-JUS, Determination principle of total nitrogen content

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.B8.815-1992 Straight ammonium nitrate fertilizers of high nitrogen content - Determination of copper content - Atomic absorption spectrophotometric 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.Z1.137-1985 Testing of industrial vvaters. Determination of nitrite-nitrate and the combined nitrite-nitrate nitrogen, Spectrophotometric method

RU-GOST R, Determination principle of total nitrogen content

GOST EN 15478-2013 Fertilizers. Determination of total nitrogen in urea
GOST 30181.3-1994 Mineral fertilizers. Method for determination of mass fraction of nitrogen in fertilizers with nitrate nitrogen
GOST EN 15561-2013 Fertilizers. Determination of total nitrogen in calcium cyanamide containing nitrates
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 27417-1998 Metallic powders. Determination of total oxygen by reduction - extraction
GOST 27417-1987 Metal powders. Methods for determination of oxygen
GOST R ISO 1656-2017 Raw natural rubber and natural rubber latex. Determination of nitrogen content
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 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 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 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 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 23260.4-1978 Marble. Method for the determination of silicon dioxide, aluminium oxide and ferric oxide
GOST R 54285-2010 Gasoline and methanol fuels. Determionation of total oxygen content by methods of reductive pyrolysis
GOST R 54285-2010(2019) Gasoline and methanol fuels. Determionation of total oxygen content by methods of reductive pyrolysis
GOST 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 R 52756-2007 Rectified ethanol from food raw material. Determination of volatile nitrogen bases content by method of capillary electrophoresis
GOST R 50279.10-1992 Paints and varnishes. Test methods of metal content. Determination of total lead. Flame atomic absorption spectrometric method
GOST R 50279.11-1992 Paints and varnishes. Test methods of metal content. Determination of total mercury. Flameless atomic absorption spectrometric method
GOST R 51423-1999 Feedstuffs, compound feeds, feed raw materials. Method for determination of soluble nitrogen fraction of total mass after treatment with pepsin in dilute hydrochloric acid
GOST 23260.3-1978 Marble. Method for the determination of calcium oxide and magnesium oxide, soluble in water
GOST R 55229-2012 Food additives. Colorimetric method for total phosphorus mass content determination in raw materials for citric acid production
GOST 31810-2012 Rectified ethanol from food raw material. Determination of volatile nitrogen bases mass concentration by capillary electrophoresis method
GOST R 50279.8-1992 Paints and varnishes. Test methods of metal content. Determination of total "soluble" chromium content of the liquid portion of paint. Flame atomic absorbtion spectrometric method

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

ISO 3099:1974 Oilseed residues — Determination of total nitrogen content
ISO 5315:1984 Fertilizers; Determination of total nitrogen content; Titrimetric method after distillation
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 8968-1:2014 | IDF 20-1:2014 Milk and milk products — Determination of nitrogen content — Part 1: Kjeldahl principle and crude protein calculation
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 29541:2010 Solid mineral fuels - Determination of total carbon, hydrogen and nitrogen content - Instrumental method
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/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 9508:1990 Iron ores; determination of total iron content; silver reduction titrimetric method
ISO 8968-1:2014 Milk and milk products - Determination of nitrogen content - Part 1: Kjeldahl principle and crude protein calculation
ISO 15672:2000 Rubber and rubber additives - Determination of total nitrogen content using an automatic analyser
ISO 14891:2002 | IDF 185:2002 Milk and milk products — Determination of nitrogen content — Routine method using combustion according to the Dumas principle
ISO 10697-2:1994 Steel; determination of calcium content by flame atomic absorption spectrometry; part 2: determination of total calcium content
ISO 914:1977 Sulphuric acid and oleum for industrial use; Determination of total nitrogen content; Titrimetric method after distillation
ISO 4491-4:2013 Metallic powders.Determination of oxygen content by reduction methods.Part 4: Total oxygen by reduction-extraction
ISO 4491-4:1989 Metallic powders; determination of oxygen content by reduction methods; part 4: total oxygen by reduction-extraction
ISO 1656:2019 Rubber, raw natural, and rubber latex, natural — Determination of nitrogen content
ISO 6851:2001 Photography - Processing waste - Determination of total amino nitrogen (microdiffusion Kjeldahl method)
ISO 10213:1991 Aluminium ores; determination of total iron content; titanium trichloride reduction method
ISO 4491-1:1989 Metallic powders; determination of oxygen content by reduction methods; part 1: general guidelines
ISO 4491-1:2023 Metallic powders — Determination of oxygen content by reduction methods — Part 1: General guidelines
ISO 9438:1989 Metallurgical-grade fluorspar — Determination of total phosphorus content — Reduced molybdophosphate spectrometric method
ISO 6851:1987 Photography; Processing waste; Determination of total amino nitrogen; Microdiffusion 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 7252:1984 Paints and varnishes; Determination of total mercury; Flameless atomic absorption spectrometric method
ISO 6503:1984 Paints and varnishes; Determination of total lead; Flame atomic absorption spectrometric method
ISO 9438:1993 Metallurgical-grade fluorspar; determination of total phosphorus content; reduced-molybdophosphate spectrometric method
ISO 5400:1984 | IULTCS Leather — Determination of total silicon content — Reduced molybdosilicate spectrometric method
ISO 6676:1990 Acid-grade and ceramic-grade fluorspar — Determination of total phosphorus content — Reduced-molybdophosphate spectrometric method
ISO 2597-1:2006 Iron ores - Determination of total iron content - Part 1: Titrimetric method after tin(II) chloride reduction
ISO 2597-2:2019 Iron ores — Determination of total iron content — Part 2: Titrimetric methods after titanium(III) chloride reduction
ISO 4491-4:2019 Metallic powders — Determination of oxygen content by reduction methods — Part 4: Total oxygen by reduction-extraction
ISO 5666-2:1983 Water quality; Determination of total mercury by flameless atomic absorption spectrometry; Part 2: Method after pretreatment with ultraviolet radiation
ISO 6676:1993 Acid-grade and ceramic-grade fluorspar; determination of total phosphorus content; reduced-molybdophosphate spectrometric method
ISO 2597-2:2008 Iron ores - Determination of total iron content - Part 2: Titrimetric methods after titanium(III)chloride reduction
ISO 2597-2:2015 Iron ores - Determination of total iron content - Part 2: Titrimetric methods after titanium(III) chloride reduction
ISO 7408:1983 Fertilizers; Determination of ammoniacal nitrogen content in the presence of other substances which release ammonia when treated with sodium hydroxide; Titrimetric method
ISO 3856-6:1980 Paints and varnishes — Determination of "soluble" metal content — Part 6: Determination of total chromium content of the liquid portion of the paint — Flame atomic absorption spectroscopic method
ISO 3856-6:1984 Paints and varnishes; Determination of "soluble" metal content; Part 6 : Determination of total chromium content of the liquid portion of the paint; Flame atomic absorption spectrometric method
ISO/DIS 21068-2 Chemical analysis of raw materials and refractory products containing silicon-carbide, silicon-nitride, silicon-oxynitride and sialon — Part 2: Determination of volatile components, total carbon, free carbon, silicon carbide, total and free silicon, free
ISO 6570-1:1983 Natural gas; Determination of potential hydrocarbon liquid content; Part 1 : Principles and general requirements
ISO 5666-3:1984 Water quality; Determination of total mercury by flameless atomic absorption spectrometry; Part 3 : Method after digestion with bromine
ISO 2613-1 Analysis of natural gas — Silicon content of biomethane — Part 1: Determination of total silicon by atomic emission spectroscopy (AES)
ISO 7990:1985 Manganese ores and concentrates; Determination of total iron content; Titrimetric method after reduction and sulfosalicylic acid spectrophotometric method
ISO 2613-1:2023 Analysis of natural gas — Silicon content of biomethane — Part 1: Determination of total silicon by atomic emission spectroscopy (AES)
ISO 6918:1984 Crude sodium borates for industrial use; Determination of total and alkali-soluble calcium and magnesium contents; Flame atomic absorption spectrometric method

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

BS EN ISO 16634-1:2008 Food products - Determination of the total nitrogen content by combustion according to the Dumas principle and calculation of the crude protein content - Part 1: Oilseeds and animal feeding stuffs
BS 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 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 EN ISO 8968-1:2014 Milk and milk products. Determination of nitrogen content. Kjeldahl principle and crude protein calculation
BS EN ISO 14891:2002 Milk and milk products - Determination of nitrogen content - Routine method using combustion according to the Dumas principle
BS ISO 29541:2010 Solid mineral fuels. Determination of total carbon, hydrogen and nitrogen content. Instrumental method
BS EN ISO 4491-4:2013 Metallic powders. Determination of oxygen content by reduction methods. Total oxygen by reduction-extraction
BS EN ISO 16634-2:2016 Tracked Changes. Food products. Determination of the total nitrogen content by combustion according to the Dumas principle and calculation of the crude protein content. Cereals, pulses and milled cereal products
BS 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/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 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 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 EN ISO 4491-4:2019 Tracked Changes. Metallic powders. Determination of oxygen content by reduction methods. Total oxygen by reduction-extraction
BS ISO 15672:2000 Rubber and rubber additives - Determination of total nitrogen content using an automatic analyser
BS ISO 2597-1:2006 Iron ores - Determination of total iron content - Titrimetric method after tin (II) chloride reduction
BS ISO 2597-2:2015 Iron ores. Determination of total iron content. Titrimetric methods after titanium(III) chloride reduction
BS ISO 2597-2:2008 Iron ores - Determination of total iron content - Titrimetric methods after titanium(III) chloride reduction
BS 7020-4.2:1990 Analysis of iron ores. Method for the determination of total iron content. Titanium (III) chloride reduction methods
BS EN 14546:2005 Foodstuffs - Determination of trace elements - Determination of total arsenic by hydride generation atomic absorption spectrometry (HGAAS) after dry ashing
BS 5551-4.1.4:1984 Fertilizers. Chemical analysis. Determination of nitrogen. Method for determination of ammoniacal nitrogen content in the presence of other substances which release ammonia when treated with sodium hydroxide (titrimetric method)
BS ISO 2597-2:2019 Tracked Changes. Iron ores. Determination of total iron content. Titrimetric methods after titanium(III) chloride reduction
BS EN 14627:2005 Foodstuffs - Determination of trace elements - Determination of total arsenic and selenium by hydride generation atomic absorption spectrometry (HGAAS) after pressure digestion
BS 5551 SubSec.4.1.4:1984 Fertilizers. Chemical analysis. Determination of nitrogen. Method for determination of ammoniacal nitrogen content in the presence of other substances which release ammonia when treated with sodium hydroxide (titrimetric method)
BS EN 16168:2012 Sludge, treated biowaste and soil. Determination of total nitrogen using dry combustion method
BS 6829-2.1:1988 Analysis of surface active agents (raw materials) - Alkane sulphonates - Method for determination of total alkaline sulphonates content
BS ISO 22145:2021 Fertilizers and soil conditioners. Mineral soil amendments. Determination of total calcium and magnesium content
BS 7020 Sec.4.2:1990 Analysis of iron ores. Method for the determination of total iron content. Titanium (III) chloride reduction methods
BS 5766-15:1997 Methods for analysis of animal feeding stuffs. Determination of soluble nitrogen content after treatment with pepsin in dilute hydrochloric acid
BS EN ISO 11085:2015 Cereals, cereals-based products and animal feeding stuffs. Determination of crude fat and total fat content by the Randall extraction method
BS EN ISO 11085:2008 Cereals, cereals-based products and animal feeding stuffs. Determination of crude fat and total fat content by the Randall extraction method
BS EN ISO 11085:2010 Cereals, cereals-based products and animal feeding stuffs. Determination of crude fat and total fat content by the Randall extraction method
23/30446956 DC BS EN ISO 21068-2. Chemical analysis of raw materials and refractory products containing silicon carbide, silicon nitride, silicon oxynitride and sialon - Part 2. Determination of volatile components, total carbon, free carbon, silicon carbide,…

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

KS M ISO 5315-2007(2012) Fertilizers－Determination of total nitrogen content－Titrimetric method after distillation
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 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 2112-2011 Crude petroleum and petroleum products-Determination of nitrogen content
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 1871-2013(2018) Agricultural food products ― General directions for the determination of nitrogen by the Kjeldahl method
KS M ISO 8603:2007 Solid fertilizers－Determination of urea nitrogen content－Gravimetric method using xanthydrol
KS M ISO 8603:2012 Solid fertilizers-Determination of urea nitrogen content-Gravimetric method using xanthydrol
KS D ISO 4491-4:2003 Metallic powders-Determination of oxygen content by reduction methods-Part 4:Total oxygen by reduction-extraction
KS E ISO 6130:2021 Chromium ores — Determination of total iron content —Titrimetric method after reduction
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 E ISO 6130:2011 Chromium ores－Determination of total iron content－Titrimetric method after reduction
KS M ISO 5400:2012 Leather-Determination of total silicon content-Reduced molybdosilicate spectrometric method
KS M ISO 15672-2007(2022) Rubber and rubber additives－Determination of total nitrogen content using an automatic analyser
KS E ISO 10213:2011 Aluminium ores－Determination of total iron content－Titanium trichloride reduction method
KS E ISO 9507:2012 Iron ores-Determination of total iron content-Titanium(III) chloride reduction methods
KS E ISO 10213:2021 Aluminium ores — Determination of total iron content —Titanium trichloride reduction method
KS M ISO 1656:2021 Rubber, raw natural, and rubber latex, natural —Determination of nitrogen content
KS M ISO 5400-2012(2022) Leather－Determination of total silicon content－Reduced molybdosilicate spectrometric method
KS M ISO 6503:2007 Paints and varnishes－Determination of total lead－Flame atomic absorption spectrometric method
KS M ISO 7252:2007 Paints and varnishes-Determination of total mercury-Flameless atomic absorption spectrometric method
KS M ISO 5400-2012(2017) Leather－Determination of total silicon content－Reduced molybdosilicate spectrometric method
KS D ISO 10697-2:2002 Steel - Determination of calcium content by flame atomic absorption spectrometry -Part 2 : Determination of total calcium content
KS E ISO 2597-1:2007 Iron ores－Determination of total iron content－Part 1：Titrimetric method after tin(II) chloride reduction
KS E ISO 2597-1-2007(2022) Iron ores－Determination of total iron content－Part 1：Titrimetric method after tin(II) chloride reduction
KS D ISO 4491-4-2003(2018) Metallic powders - Determination of oxygen content by reduction methods Part 4 : Total oxygen by reduction-extraction
KS D ISO 4829-2:2005 Steel and iron－Determination of total silicon content－Reduced molybdosilicate spectrophotometric method－Part 2：Silicon contents between 0.01 and 0.05 %
KS D ISO 4829-2002(2007) Steel and iron－Determination of total silicon content－Reduced molybdosilicate spectrophotometric method－Part 2：Silicon contents between 0.01 and 0.05 %
KS M ISO 3856-6:2007 Paints and varnishes－Determination of “soluble” metal content－Part 6：Determination of total chromium content of the liquid portion of the paint－Flame atomic absorption spectrometric method
KS E ISO 2597-2:2009 Iron ores－Determination of total iron content－Part 2：Titrimetric methods after titanium(III) chloride reduction
KS M ISO 3856-6:2022 Paints and varnishes — Determination of “soluble” metal content — Part 6: Determination of total chromium content of the liquid portion of the paint — Flame atomic absorption spectrometric method
KS M ISO 3856-6-2007(2017) Paints and varnishes－Determination of “soluble” metal content－Part 6：Determination of total chromium content of the liquid portion of the paint－Flame atomic absorption spectrometric method
KS D ISO 4829-1:2002 Steel and cast iron-Determination of total silicon content-Reduced molybdosilicate spectrophotometric method-Part 1:Silicon contents between 0.05 and 1.0 %
KS E ISO 7990-2002(2022) Manganese ores and concentrates－Determination of total iron content－Titrimetric method after reduction and sulfosalicylic acid spectrophotometric method
KS M ISO 7408-2007(2012) Fertilizers－Determination of ammoniacal nitrogen content in the presence of other substances which release ammonia when treated with sodium hydroxide－Titrimetric method
KS E ISO 7990:2002 Manganese ores and concentrates－Determination of total iron content－Titrimetric method after reduction and sulfosalicylic acid spectrophotometric method
KS M ISO 7408:2007 Fertilizers-Determination of ammoniacal nitrogen content in the presence of other substances which release ammonia when treated with sodium hydroxide-Titrimetric method
KS M ISO 7408:2013 Fertilizers－Determination of ammoniacal nitrogen content in the presence of other substances which release ammonia when treated with sodium hydroxide－Titrimetric method

RO-ASRO, Determination principle of total nitrogen content

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 SR 4895-4-1997 Tobacco and tobacco products Determination of total reducing sugas, soluble sugars and total reducing substance. Manganometric method
STAS SR EN 24491-4-1995 Metallic powders. Determination of oxygen content by reduction, methods. Part 4: Total oxygen by reduction-extraction
STAS 12200-1985 SLUDGES RESULTED FROM= SURFACE WATERS TREATMENT AND WASTE WATERS PURIFI- CATION Nitrogen content determination
STAS SR EN 24829-2-1994 Steel and cast iron. Determination of total silicon content. Reduced molybdosilicate spectrophotometric method. Part 2: Silicon content between 0,01 and 0,05 %
STAS SR EN 24829-1-1994 Steel and cast iron. Determination of total silicon content. Reduced molybdosilicate spectrophotometric method. Part 1: Silicon content between 0,05 and 1,0 %
STAS SR ISO 7990:1996 Manganese ores and concentrates — Determination of total iron content - Titrirnetiic method after reriuction and sulfosalicylic acid spectrofotometric rnpthod

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

JIS K 2609:1998 Crude petroleum and petroleum products -- Determination of nitrogen content
JIS M 8212:2022 Iron ores -- Determination of total iron content -- Potassium dichromate titrimetric method after titanium (III) chloride reduction
JIS K 0400-66-20:1998 Water quality -- Determination of total mercury by flameless atomic absorption spectrometry -- Part 2: Method after pretreatment with ultraviolet radiation
JIS K 0400-66-30:1998 Water quality -- Determination of total mercury by flameless atomic absorption spectrometry -- Part 3: Method after digestion with bromine

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

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 24583.8-2019 Vanadium-nitrogen—Determination of silicon, manganese, phosphorus, aluminum content—Inductively coupled plasma atomic emission spectrometric method

CZ-CSN, Determination principle of total nitrogen content

CSN 65 4836-1983 Minerál fertilizers Methode for determination of total nitrogen content
CSN 83 0540 Cast.13-1984 Chemical and physical analysis of waste water Determination of organic and total nitrogen
CSN ISO 6130:1992 Chromium ores - Determination of total iron content - Titrimetric method after reduction
CSN ISO 9507:1993 Iron ores. Determination of total iron content. Titanium (III) chloride reduction methods
CSN ISO 9438:1992 Metallurgical-grade fluorspar - Determination of total phosphorus content - Reduced molybdophosphate spectrometric method
CSN 83 0540 Cast.27-1987 Chemical and physical analysis of waste waters. Determination of total cyanides
CSN ISO 3846-6:1994 Paints and varnishes. Determination of ?soluble" metal content Part 6: Determination of total chromium content of the liquid portion of the paint — Flame atomic absorption spectrometric method
CSN 46 7092-5-1998 Testing methods for feeding stuffs - Part 5: Determination of soluble nitrogen content after treatment with pepsin in hydrochloric acid solution

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

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

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

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)
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 15750:2009 Fertilizers - Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods
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 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 14891:2002 Milk and Milk Products - Determination of Nitrogen Content - Routine Method Using Combustion According to the Dumas Principle
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)
prEN 24491-4-1992 Metallic powders; determination of oxygen content by reduction methods; part 4: total oxyen by reduction-extraction (ISO 4491-4:1989)
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 24491-4:1993 Metallic Powders - Determination of Oxygen Content by Reduction Methods - Part 4: Total Oxygen by Reduction-Extraction (ISO 4491-4: 1989)
EN ISO 4491-1:2023 Metallic powders - Determination of oxygen content by reduction methods - Part 1: General guidelines (ISO 4491-1:2023)
EN ISO 8968-1:2014 Milk and milk products - Determination of nitrogen content - Part 1: Kjeldahl principle and crude protein calculation
EN 16168:2012 Sludge, treated biowaste and soil - Determination of total nitrogen using dry combustion method
EN ISO 4829-2:2016 Steels - Determination of total silicon contents - Reduced molybdosilicate spectrophotometric method - Part 2: Silicon contents between 0@01 % and 0@05 %
EN 24829-1:1990 Steel and cast iron; determination of total silicon content; reduced molybdosilicate spectrophotometric method; part 1: silicon content between 0.05 and 1 %
EN 24829-2:1990 Steel and Cast Iron - Determination of Total Silicon Content - Reduced Molyoldosilicate Spectrophotometric Method - Part 2: Silicon Content Between 0-01 and 0-05
prEN 25666-2-1992 Water quality; determination of total mercury by flameless atomic absorption spectrometry; part 2: method after pretreatment with ultraviolet radiation (ISO 5666-2:1983)
EN 24829-1:1990/AC:1991 Steel and cast iron; determination of total silicon content; reduced molybdosilicate spectrophotometric method; part 1: silicon content between 0,05 and 1 %; amendment (ISO 4829-1:1986)
EN 24829-2:1990/AC:1991 Steel and cast iron; determination of total silicon content; reduced molybdosilicate spectrophotometric method; part 2: silicon content between 0.01 and 0.05 %; amendment (ISO 4829-2:1986)

German Institute for Standardization, Determination principle of total nitrogen content

DIN EN ISO 16634-1:2009 Food products - Determination of the total nitrogen content by combustion according to the Dumas principle and calculation of the crude protein content - Part 1: Oilseeds and animal feeding stuffs (ISO 16634-1:2008); English version of DIN EN ISO 16634-1:
DIN EN ISO 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 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 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 ISO 13878:1998 Soil quality - Determination of total nitrogen content by dry combustion ("elemental analysis") (ISO 13878:1998)
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 ISO 4491-4:1990 Metallic powders; determination of oxygen content by reduction methods; total oxygen by reduction-extraction; identical with ISO 4491-4:1989
DIN 51400-1:1992 Testing of mineral oils and fuels; determination of the sulfur content (total sulfur); general working principles
DIN EN ISO 14891:2002-07 Milk and milk products - Determination of nitrogen content - Routine method using combustion according to the Dumas principle (ISO 14891:2002); German version EN ISO 14891:2002
DIN EN 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 ISO 4491-4:2019-09 Metallic powders - Determination of oxygen content by reduction methods - Part 4: Total oxygen by reduction-extraction (ISO 4491-4:2019); German version EN ISO 4491-4:2019 / Note: Applies in conjunction with DIN ISO 4491-1 (1990-06).
DIN 51085:2006 Testing of oxidic raw and basic materials - Determination of total sulphur content
DIN 51085:2015 Testing of oxidic raw and basic materials - Determination of total sulphur content
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 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 51400-1:2009-04 Testing of mineral oils and fuels - Determination of sulfur content (total sulfur) - Part 1: General working principles
DIN 51085:2022-09 Testing of oxidic raw materials and oxidic materials - Determination of total sulphur content
DIN ISO 4491-1:1990 Metallic powders; determination of oxygen content by reduction methods; general guidelines; identical with ISO 4491-1:1989
DIN ISO 6503:1985 Paints and varnishes; determination of total lead; flame atomic absorption spectrometric method; identical with ISO 6503, edition 1984
DIN EN ISO 8968-1:2014 Milk and milk products - Determination of nitrogen content - Part 1: Kjeldahl principle and crude protein calculation (ISO 8968-1:2014); German version EN ISO 8968-1:2014
DIN EN ISO 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 4491-4:2012 Metallic powders - Determination of oxygen content by reduction methods - Part 4: Total oxygen by reduction-extraction
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 4491-4:2019 Metallic powders - Determination of oxygen content by reduction methods - Part 4: Total oxygen by reduction-extraction (ISO 4491-4:2019)
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 4829-2:2016-08 Steels - Determination of total silicon contents - Reduced molybdosilicate spectrophotometric method - Part 2: Silicon contents between 0,01 % and 0,05 % (ISO 4829-2:2016); German version EN ISO 4829-2:2016
DIN EN 24829-2:1992 Determination of total silicon content of steel and cast iron by the reduced molybdosilicate spectrophotometric method; silicon contents between 0,01 and 0,05 % (ISO 4829-2:1988); german version EN 24829-2:1990
DIN EN ISO 4491-4:2013 Metallic powders - Determination of oxygen content by reduction methods - Part 4: Total oxygen by reduction-extraction (ISO 4491-4:2013); German version EN ISO 4491-4:2013
DIN EN 24829-1:1992 Determination of total silicon content of steel and cast iron by the reduced molybdosilicate spectrophotometric method; silicon contents between 0,05 and 1,0 % (ISO 4829-1:1986); german version EN 24829-1:1990
DIN EN ISO 4829-1:2018-08 Steel and cast iron - Determination of total silicon contents - Reduced molybdosilicate spectrophotometric method - Part 1: Silicon contents between 0,05 % and 1,0 % (ISO 4829-1:2018); German version EN ISO 4829-1:2018
DIN 19745:2006-10 Soil quality - Principles of the determination of the water content by Time Domain Reflectometry (TDR) and Time Domain Transmissometry (TDT)
DIN EN ISO 21068-2:2023-07 Chemical analysis of raw materials and refractory products containing silicon-carbide, silicon-nitride, silicon-oxynitride and sialon - Part 2: Determination of volatile components, total carbon, free carbon, silicon carbide, total and free silicon, fr...
DIN 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); German version EN ISO 16634-2:
DIN SPEC 1138:2010 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); German version CEN ISO/TS 1
DIN EN 16168:2012 Sludge, treated biowaste and soil - Determination of total nitrogen using dry combustion method; German version EN 16168:2012
DIN 51400-1:2009 Testing of mineral oils and fuels - Determination of sulfur content (total sulfur) - Part 1: General working principles
DIN 51083-6:1992 Testing of ceramic materials; chemical analysis of alumosilicates; determination of the iron and manganese content by atomic absorption spectrometry

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

IDF 20-1-2014 Milk and milk products - Determination of nitrogen content - Part 1: Kjeldahl principle and crude protein calculation
IDF 185-2002 Milk and milk products - Determination of nitrogen content - Routine method using combustion according to the Dumas principle

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

AS ISO 8968.1:2021 Milk and milk products — Determination of nitrogen content, Part 1: Kjeldahl principle and crude protein calculation
AS 2300.1.2.2:1988 Methods of chemical and physical testing for the dairying industry - General methods and principles - Determination of nitrogen - Nitrogen fractions from milk
AS 2300.1.2.1:1991 Methods of chemical and physical testing for the dairying industry - General methods and principles - Determination of nitrogen - Reference Kjeldahl method
AS 2300.1.3:1988 Methods of chemical and physical testing for the dairying industry - General methods and principles - Determination of fat - Gravimetric method
AS 2300.4.8:1994 Methods of chemical and physical testing for the dairying industry - Dried milk and dried milk products - Determination of undenatured whey protein nitrogen (UDWPN) in dried skim milk

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

SN/T 3097-2012 Determination of total nitrogen in fertelezers.Combustion

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

T/GXAS 477-2023 Determination of total nitrogen content in sugarcane juice —sulphuric acid titrimetric method
T/CSTM 00049-2018 Steel and iron—Determination of chromium content— Nitrous oxide-acetylene flame atomic absorption spectrometric method
T/NAIA 0139-2022 Diesel engine nitrogen oxide reducing agent urea aqueous solution (AUS 32) Determination of urea content Automatic Kjeldahl method
T/CNIA 0016-2019 Determination of Hydrogen Chloride, Nitrogen, Oxygen and Total Carbon Content in Recycled Hydrogen for Polysilicon by Gas Chromatography
T/SDAQI 064-2021 Determination of urea content in diesel engines NOx reduction agent - Aqueous urea solution by refractive index
T/COCIA 14-2021 Determination of Chlorogenic Acid Content in Toothpaste of Oral Cleaning and Nursing Products by High Performance Liquid Chromatography

KR-KS, Determination principle of total nitrogen content

KS M ISO 16948-2021 Solid biofuels — Determination of total content of carbon, hydrogen and nitrogen
KS M ISO 8603-2007 Solid fertilizers－Determination of urea nitrogen content－Gravimetric method using xanthydrol
KS E ISO 6130-2021 Chromium ores — Determination of total iron content —Titrimetric method after reduction
KS D ISO 4491-4-2003(2023) Metallic powders - Determination of oxygen content by reduction methods Part 4 : Total oxygen by reduction-extraction
KS E ISO 10213-2021 Aluminium ores — Determination of total iron content —Titanium trichloride reduction method
KS M ISO 1656-2021 Rubber, raw natural, and rubber latex, natural —Determination of nitrogen content
KS D ISO 4491-1-2008(2023) Metallic powders — Determination of oxygen content by reduction methods — Part 1 : General guidelines
KS M ISO 3856-6-2022 Paints and varnishes — Determination of “soluble” metal content — Part 6: Determination of total chromium content of the liquid portion of the paint — Flame atomic absorption spectrometric method
KS D ISO 4829-1-2022 Steel and cast iron — Determination of total silicon contents — Reduced molybdosilicate spectrophotometric method — Part 1: Silicon contents between 0.05 % and 1.0 %

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

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

ES-UNE, Determination principle of total nitrogen content

UNE-EN ISO 16948:2015 Solid biofuels - Determination of total content of carbon, hydrogen and nitrogen (ISO 16948:2015)
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)
UNE-EN ISO 4491-4:2020 Metallic powders - Determination of oxygen content by reduction methods - Part 4: Total oxygen by reduction-extraction (ISO 4491-4:2019)
UNE 59027:1988 ERRATUM LEATHER. DETERMINATION OF TOTAL SILICON CONTENT. REDUCED MOLYBDOSILICATE SPECTROMETRIC METHOD
UNE-EN ISO 4829-2:2016 Steels - Determination of total silicon contents - Reduced molybdosilicate spectrophotometric method - Part 2: Silicon contents between 0,01 % and 0,05 % (ISO 4829-2:2016)
UNE-EN ISO 4829-1:2019 Steel and cast iron - Determination of total silicon contents - Reduced molybdosilicate spectrophotometric method - Part 1: Silicon contents between 0,05 % and 1,0 % (ISO 4829-1:2018)

ES-AENOR, Determination principle of total nitrogen content

Danish Standards Foundation, Determination principle of total nitrogen content

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/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/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 24491-4:1993 Metallic powders. Determination of oxygen content by reduction methods. Part 4: Total oxygen by reduction-extraction
DS/EN ISO 14891:2002 Milk and milk products - Determination of nitrogen content - Routine method using combustion according to the Dumas principle
DS/EN ISO 4491-4:2013 Metallic powders - Determination of oxygen content by reduction methods - Part 4: Total oxygen by reduction-extraction
DS/EN 24829-1:1991 Steel and cast iron. Determination of total silicon content. Reduced molybdosilicate spectrophotometric method. Part 1: Silicon contents between 0.05 and 1,0 %
DS/EN 24829-2:1991 Steel and cast iron. Determination of total silicon content. Reduced molybdosilicate spectrophotometric method. Part 2: Silicon contents between 0.01 og 0.05 %
DS/ISO 4829-2:1991 Steel and iron. Determinaiton of total silicon content. Reduced molybdosilicate spectrophotometric method. Part 2: Silicon contents between 0,01 and 0,05 %
DS/ISO 3856/6:1982 Paints and varnishes. Determination of "soluble" metal content. Part 6: Determination of the total chromium content of the liquid portion of the paint. Flame atomic absorption spectroscopic method
DS/ISO 4829-1:1991 Steel and cast iron. Determination of total silicon content. Reduced molybdosilicate spectrophotometric method. Part 1: Silicon contents between 0,05 and 1,0 %

BE-NBN, Determination principle of total nitrogen content

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 T 04-409-1984 Chlorofluorohydrocarbons for industrial use - Determination of inert gas content - Gas chromatographic method - General principles

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

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

AENOR, Determination principle of total nitrogen content

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 77325:2003 Soil quality. Determination of total nitrogen content by dry combustion ("elemental analysis").
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 59027:1988 LEATHER. DETERMINATION OF TOTAL SILICON CONTENT. REDUCED MOLYBDOSILICATE SPECTROMETRIC METHOD
UNE-EN ISO 14891:2002 Milk and milk products - Determination of nitrogen content - Routine method using combustion according to the Dumas principle. (ISO 14891:2002)
UNE-EN ISO 4491-4:2014 Metallic powders - Determination of oxygen content by reduction methods - Part 4: Total oxygen by reduction-extraction (ISO 4491-4:2013)
UNE 36314-1:1990 STEEL AND CAST IRON. DETERMINATION OF TOTAL SILICON CONTENT. REDUCED MOLYBDOSILICATE SPECTROPHOTOMETRIC METHOD. PART 1: SILICON CONTENT BETWEEN 0,05 AND 1%

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

EN ISO 8968-4:2001 Milk - Determination of Nitrogen Content - Part 4: Determination of Non-Protein Nitrogen Content
PD CEN/TS 15104:2005 Solid biofuels - Determination of total content of carbon@ hydrogen and nitrogen - Instrumental methods
EN ISO 8968-1:2001 Milk - Determination of Nitrogen Content - Part 1: Kjeldahl Method

SE-SIS, Determination principle of total nitrogen content

SIS SS 02 81 33-1991 Determination of the sum of the nitrite and nitrate nitrogen content of water
SIS SS 02 81 01-1992 Nitrogen content of water — Determination with Kjeldahl method after reduction with Devarda's alloy

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

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 principle of total nitrogen content

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

AT-ON, Determination principle of total nitrogen content

ONORM S 7009-1982 Testing of leather; determination of the contents of total nitrogen and of ammonium salts; calculation of hide substance
ONORM L 1063-1988 Physical investigations of soils; determination of the relation pressure potential versus water content of undisturbed soil samples
ONORM ISO 5666 Teil.2:1984 Water quality; determination of total mercury by flameless atomic absorption spectrometry; method after pretreatment with ultraviolett radiation

Lithuanian Standards Office , Determination principle of total nitrogen content

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 EN 15104-2011 Solid biofuels - Determination of total content of carbon, hydrogen and nitrogen - Instrumental methods
LST EN ISO 16948:2015 Solid biofuels - Determination of total content of carbon, hydrogen and nitrogen (ISO 16948:2015)
LST 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)
LST EN ISO 14891:2003 Milk and milk products - Determination of nitrogen content - Routine method using combustion according to the Dumas principle (ISO 14891:2002)
LST EN 24491-4-2000 Metallic powders - Determination of oxygen content by reduction methods - Part 4: Total oxygen by reduction-extraction (ISO 4491-4:1989)
LST EN 24829-2-2000/AC-2003 Steel and cast iron - Determination of total silicon content - Reduced molybdosilicate spectrophotometric method - Part 2: Silicon content between 0,01 and 0,05% (ISO 4829-2:1988)
LST EN 24829-1-2000/AC-2003 Steel and cast iron - Determination of total silicon content - Reduced molybdosilicate spectrophotometric method - Part 1: Silicon content between 0,05 and 1% (ISO 4829-1:1986)
LST EN 24829-2-2000 Steel and cast iron - Determination of total silicon content - Reduced molybdosilicate spectrophotometric method - Part 2: Silicon content between 0,01 and 0,05% (ISO 4829-2:1988)
LST EN 24829-1-2000 Steel and cast iron - Determination of total silicon content - Reduced molybdosilicate spectrophotometric method - Part 1: Silicon content between 0,05 and 1% (ISO 4829-1:1986)

ZA-SANS, Determination principle of total nitrogen content

SANS 12902:2007 Solid mineral fuels - Determination of total carbon, hydrogen and nitrogen - Instrumental methods

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

ASTM E258-67(2002) Standard Test Method for Total Nitrogen in Organic Materials by Modified Kjeldahl Method
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 D5622-95(2005) Standard Test Methods for Determination of Total Oxygen in Gasoline and Methanol Fuels by Reductive Pyrolysis
ASTM D5622-95(2011) Standard Test Methods for Determination of Total Oxygen in Gasoline and Methanol Fuels by Reductive Pyrolysis
ASTM D4468-85(2011) Standard Test Method for Total Sulfur in Gaseous Fuels by Hydrogenolysis and
Rateometric Colorimetry
ASTM D4468-85(2000) Standard Test Method for Total Sulfur in Gaseous Fuels by Hydrogenolysis and Rateometric Colorimetry
ASTM D4468-85(2015) Standard Test Method for Total Sulfur in Gaseous Fuels by Hydrogenolysis and Rateometric Colorimetry
ASTM D5622-16 Standard Test Methods for Determination of Total Oxygen in Gasoline and Methanol Fuels by Reductive Pyrolysis
ASTM D4661-03 Standard Test Methods for Polyurethane Raw Materials: Determination of Total Chlorine in Isocyanates

NL-NEN, Determination principle of total 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-ISO 4491-4:1993 Metallic powders. Determination of oxygen content by reduction methods. Part 4: Total oxygen by reduction-extraction (ISO 4491-4:1989)
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 6449-1981 Water - Determination of total mercury content by atomic absorption spectrometry - Digestion with permanganate and persulphate

HU-MSZT, Determination principle of total nitrogen content

国家质量监督检验检疫总局, Determination principle of total nitrogen content

SN/T 4429.1-2016 Determination of total mercury content in crude oil by gold amalgam cold atomic absorption spectrometry
SN/T 4429.2-2016 Determination of total mercury content in crude oil by Zeeman-corrected cold atomic absorption spectrometry

IT-UNI, Determination principle of total nitrogen content

UNI 4903-1962

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 principle of total nitrogen content

GB/T 35905-2018 Test methods for biomass—Determination of total solids in biomass
GB/T 33086-2016 Water treatment chemical—Determination of arsenic and mercury—Atomic fluorescence spectrometry
GB/T 35812-2018 Method for analysis of forestry biomass—Determination of insoluble solids following pretreatment

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

ANSI/PIMA IT4.47-1998 Photography (Processing) - Effluents - Determination of Total Amino Nitrogen - Microdiffusion Kjeldahl Method
ANSI/ASTM D4661:1998 Polyurethane-Isocyanate Raw Materials, Determination of Total Chlorine, Method for Testing (08.03)
BS EN ISO 2613-1:2023 Analysis of natural gas. Silicon content of biomethane Determination of total silicon by atomic emission spectroscopy (AES) (British Standard)

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

YS/T 587.15-2023 Calcined coke for prebaked blocks— Part 15: Determination of total carbon,hydrogen and nitrogen contents
YS/T 520.5-2007 Chemical analysis of gallium.Part 5: Determination of calcium content.The NO-CH flame atomic absorption spectral method

IN-BIS, Determination principle of total nitrogen content

IS 5644 Pt.4-1993

工业和信息化部, Determination principle of total nitrogen content

YS/T 1539-2022 Determination of boron nitride content in aluminum-based boron nitride powder by inductively coupled plasma atomic emission spectrometry
YB/T 4566.4-2016 Determination of silicon, manganese, phosphorus and aluminum content in ferrovanadium nitride by inductively coupled plasma atomic emission spectrometry

国家能源局, Determination principle of total nitrogen content

NB/SH/T 0986-2019 Determination of total oxygen content in gasoline, diesel and methanol fuels - reduction cracking method

CU-NC, Determination principle of total nitrogen content

NC 28-08-1987 Fertilxzers. Mixed, Granulated and Complex Fertilizers. Determination of Total Nitrogen, Assimilable Phosphorus and Potassium by the Weighing Method

Guangdong Provincial Standard of the People's Republic of China, Determination principle of total nitrogen content

DB44/T 1820-2016 Determination of total mercury content in solids Electrothermal-Zeman effect atomic absorption spectrometry

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

YB/T 6088-2023 Determination of ferrosilicon nitride calcium, aluminum, chromium, manganese, titanium, phosphorus content by inductively coupled plasma atomic emission spectrometry
YB/T 190.8-2014 Continuous casting powder.The determination of iron content.The o-phenanthroline spectrophotometric method and the flame atomic absorption method

Professional Standard - Nuclear Industry, Determination principle of total nitrogen content

EJ/T 20167-2018 Determination of nitrogen content in reprocessed uranium trioxide powder by distillation-Nessler reagent spectrophotometry

Military Standard of the People's Republic of China-General Armament Department, Determination principle of total nitrogen content

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