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DETotal nitrogen analysis method
Total nitrogen analysis method, Total:191 items.
In the international standard classification, Total nitrogen analysis method involves: Fertilizers, Rubber, Water quality, Metalliferous minerals, Inorganic chemicals, Coals, Soil quality. Pedology, Ceramics, ENVIRONMENT. HEALTH PROTECTION. SAFETY, Analytical chemistry, Ferrous metals, Testing of metals, Products of non-ferrous metals, Construction materials, Sensory analysis, External water conveyance systems, Cutting tools, Sugar. Sugar products. Starch, Tea. Coffee. Cocoa, Non-ferrous metals, Air quality, Fuels, Products of the chemical industry, Ferroalloys, Milk and milk products, Crude petroleum, Education, Refractories, Environmental testing.
Spanish Association for Standardization (UNE), Total nitrogen analysis method
- UNE 34080:1974 ANALYSIS METHODS FOR CHOCOLATES. DETERMINATION OF TOTAL NITROGEN. (PROTEINS).
- UNE 77325:2003 Soil quality. Determination of total nitrogen content by dry combustion ("elemental analysis").
- UNE 34082:1976 ANALYSIS METHODS FOR CHOCOLATES. TOTAL FAT.
- UNE-EN 15750:2010 Fertilizers - Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods
British Standards Institution (BSI), Total nitrogen analysis method
- BS 5551-4.1.3:1986 Fertilizers. Chemical analysis. Determination of nitrogen. Method for determination of total nitrogen content (titrimetric method after distillation)
- BS ISO 6658:2006 Sensory analysis - Methodology - General guidance
- BS 4267-2:1988 Ammonium nitrate - Method for determination of total nitrogen content
- BS 7755-3.7:1995 Soil quality. Chemical methods. Determination of total nitrogen. Modified Kjeldahl method
- BS 4267-2:1988(1999) Ammonium nitrate — Part 2 : Method for determination of total nitrogen content
- DD ISO/TS 12902:2002 Solid mineral fuels. Determination of total 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 6986-4:1990 Analysis of instant tea. Method for determination of total ash
- 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 EN 15750:2010 Fertilizers. Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods
National Metrological Verification Regulations of the People's Republic of China, Total nitrogen analysis method
- JJG 1094-2013 Water Quality On-line Analyzers of Total Phosphorus and Total Nitrogen
國家市場監督管理總局、中國國家標準化管理委員會, Total nitrogen analysis method
- GB/T 40723-2021 Rubber—Determination the contents of total sulfur and total nitrogen — Automatic analyser method
Japanese Industrial Standards Committee (JISC), Total nitrogen analysis method
- JIS K 0170-3:2019 Testing methods for water quality by flow analysis -- Part 3: Total nitrogen
- JIS K 0170-3:2011 Testing methods for water quality by flow analysis -- Part 3: Total nitrogen
- JIS G 1201:2022 Iron and steel -- General rules for analytical methods
- JIS R 1640:2002 Methods for the quantitative phase analysis of silicon nitride
- JIS G 1311-7:2012 Method for chemical analysis of ferromanganese -- Part 7: Determination of nitrogen content
- JIS G 1313-6:2012 Method for chemical analysis of ferrochromium .Part 6: Determination of nitrogen content
- JIS K 0102-2:2022 Testing methods for industrial water and industrial wastewater -- Part 2: Inorganic anions, ammonium ion, organic nitrogen, total nitrogen and total phosphorus
General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China, Total nitrogen analysis method
- GB/T 6730.24-1986 Methods for chemical analysis of iron ores--The arsenazo 3 photometric method for the determination of rare earth elements content
- GB/T 10220-1988 Sensory analysis--Methodology--General guidance
- GB 223.49-1985 Methods for chemical analysis of iron,steel and alloy--The extraction separation-chlorophosphonazo mA photometric method for the determination of rare earth elements
- GB/T 3257.15-1999 Methods for chemical analysis of bauxite--Determination the total content of rare earth oxide--Tribromo-arsenazo photometric method
- GB/T 223.49-1994 Methods for chemical analysis of iron,steel and alloy. Extraction separation-chlorophosphonazo mA spectrophotometric method for the determination of the total rare tarth content
- GB/T 2441.1-2008 Determination of urea.Part 1:Total nitrogen content
- GB/T 10220-2012 Sensory analysis.Methodology.General guidance
- GB/T 6987.24-2001 Aluminium and aluminium alloys--Determination of the cerium subgroup of rare earth elements content--Tribromoarsenazo spectrophotometric method
- GB/T 15076.13-1994 Methods for chemical analysis of tantalum and niobium-Determination of nitrogen content in tantalum
- GB/T 5687.4-1985 Methods for chemical analysis of ferro-chromium--The neutralization titration method for the determination of nitrogen content
- GB/T 609-1988 Chemical reagent--General method for the determination of total nitrogen
- GB/T 609-2006 Chemical reagent General method for the determination of total nitrogen
- GB/T 609-2018 Chemical reagent.General method for the determination of total nitrogen
- GB/T 2441.1-2001 Determination of urea-Determination of total nitrogen content
- GB/T 4325.26-1984 Methods for chemical analysis of molybdenum--The nessler reagent photometric method for the determination of nitrogen content
- GB/T 4324.26-1984 Methods for chemical analysis of tungsten--The Nessler reagent photometric method for the determination of nitrogen content
- GB/T 4325.6-1984 Methods for chemical analysis of molybdenum--The ortho-phenanthroline photometric method for the determination of iron content
- GB/T 4324.15-1984 Methods for chemical analysis of tungsten--The chlorophosphonazo I photometric method for the determination of magnesium content
- GB/T 11606.1-1989 The method of environmental test for analytical instruments--General
- GB/T 4325.15-1984 Methods for chemical analysis of molybdenum--The chlorophosphonazo 1 photometric method for the determination of magnesium content
- GB/T 4324.6-1984 Methods for chemical analysis of tungsten--The ortho-phenanthroline photometric method for the determination of iron content
- GB/T 20931.9-2007 Methods for chemical analysis of lithium Determination of nitrogen content Mercuric potassium iodide spectrophotometric method
- GB/T 14265-1993 General rule of chemical analysis for hydrogen, oxygen, nitrogen, carbon and sulfur in metal's materials
- GB/T 8220.2-1998 Methods for chemical analysis bismuth--Determination of iron content--1,10-Phenanthroline photometric method
- GB/T 13580.1-1992 General princeptes for analytial methods of the wet precipitation
Professional Standard - Commodity Inspection, Total nitrogen analysis method
- SN/T 3097-2012 Determination of total nitrogen in fertelezers.Combustion
Military Standard of the People's Republic of China-General Armament Department, Total nitrogen analysis method
- GJB 507-1988 Boron nitride chemical analysis method
- GJB 770.303-1989 Test methods for gunpowder analysis: Determination of nitrogen content of nitrocellulose. Five-tube nitrogen meter method
Professional Standard - Machinery, Total nitrogen analysis method
VN-TCVN, Total nitrogen analysis method
- TCVN 6645-2000 Soil quality.Determination of total nitrogen content by dry combustion ("elemental analysis")
- TCVN 305-2010 Steel and iron.Determination of nitrongen content.Methods of chemical analysis.
Jilin Provincial Standard of the People's Republic of China, Total nitrogen analysis method
- DB22/T 1932-2013 Determination method of total nitrogen content in peat (Kjeldahl method)
SCC, Total nitrogen analysis method
- NS 4745:1991 Water analysis - Determination of the sum of nitrite nitrogen and nitrate nitrogen
- BS 1121-39:1959 Methods for the analysis of iron and steel. Nitrogen in iron and steel
- AWWA ACE58255 Analytical Methods for Organic-N in Water Sources
- BS 1121-39:1967 Methods for the analysis of iron and steel. Nitrogen in iron and steel. Volumetric
- NS 4743:1993 Water analysis — Determination of total nitrogen after oxidation by peroxodisulphate
- NS-EN 15750:2009 Fertilizers — Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods
- SN-CEN/TS 15750:2008 Fertilizers — Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods
- BS DD CEN/TS 15750:2008 Fertilizers. Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods
- DANSK DS/EN 15750:2009 Fertilizers - Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods
- AENOR UNE-EN 15750:2010 Fertilizers - Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods
- DIN EN 15750 E:2009 Draft Document - Fertilizers - Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods; German version prEN 15750:2009
- DANSK DS/ISO 29441:2010 Water quality - Determination of total nitrogen after UV digestion - Method using flow analysis (CFA and FIA) and spectrometric detection
- BS 3917-2:1965 Methods for the analysis of manganese ores-Total manganese
- DANSK DS/EN ISO 13395:1997 Water quality - Determination of nitrite nitrogen and nitrate nitrogen and the sum of both by flow analysis (CFA and FIA) and spectrometric detection
- BS 5551-4.1.5:1993 Fertilizers. Chemical analysis. Determination of nitrogen.-Method for determination of urea nitrogen content (gravimetric method using xanthydrol)
- BS 684-0:1982 Methods of analysis of fats and fatty oils-General introduction
NL-NEN, Total nitrogen analysis method
- 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
Association Francaise de Normalisation, Total nitrogen analysis method
- NF X31-418*NF ISO 13878:1998 Soil quality. Determination of total nitrogen content by dry combustion ("elemental analysis").
- NF EN ISO 21814:2022 Technical ceramics - Methods for chemical analysis of aluminum nitride powders
- NF EN ISO 17947:2023 Technical ceramics - Methods for the chemical analysis of fine silicon nitride powders
- NF T20-295:1968 CHEMICAL ANALYSIS OF SULPHURIC ACID AND OLEUM. DETERMINATION OF TOTAL NITROGEN.
- NF V04-211:1971 MILK. DETERMINATION OF TOTAL NITROGEN CONTENT. (KJELDAHL METHOD).
- NF A06-555:2010 Steel - Determination of nitrogen content - Spectrophotometric method.
- NF ISO 13878:1998 Soil quality - Determination of total nitrogen content by dry combustion ("elemental analysis")
Professional Standard - Aviation, Total nitrogen analysis method
- HB 5218.14-1995 Aluminum Alloy Chemical Analysis Method Tribromoarsine Spectrophotometric Determination of Total Rare Earth in Cerium Group
- HB/Z 5218.14-2004 Methods for chemical analysis of aluminium alloys-Part 14:Determination of the cerium subgroup of rare earth elements content by tribromoarsenazo spectrophtometric method
- HB 5220.39-1995 Chemical Analysis Method of Superalloys PMBP Direct Extraction-ArsenazoⅢ Absorbance Spectrophotometry Determination of Total Rare Earth
- HB 5220.39-2008 Methods for chemical analysis of superalloys. Part 39: Determination of total rare earth content by PMBP direct extraction-arsenazo Ⅲ photometric method
Korean Agency for Technology and Standards (KATS), Total nitrogen analysis method
- KS L 9310-2017(2022) Methods for chemical analysis of aluminum nitride powders
- KS I ISO 13878:2009 Soil quality－Determination of total nitrogen content by dry combustion(“elemental analysis”)
- KS I 2203-2011 Methods for determination of oxides of nitrogen in flue gases
- KS L 9310-2017 Methods for chemical analysis of aluminum nitride powders
- KS L 9310-2022 Methods for chemical analysis of aluminum nitride powders
- KS Q ISO 6658-2009(2019) Sensory analysis－Methodology－General guidance
- KS E 3013-2001(2006) METHODS FOR DETERMINATION OF TOTAL IRON CONTENT IN IRON ORES
- KS Q ISO 6658:2009 Sensory analysis-Methodology-General guidance
- KS L 3318-1988 METHODS FOR CHEMICAL ANALYSIS OF FINE SILICON NITRIDE POWDERS FOR FINE CERAMICS
- KS L 3318-1998 METHODS FOR CHEMICAL ANALYSIS OF FINE SILICON NITRIDE POWDERS FOR FINE CERAMICS
- KS I ISO 13395-2008(2018) Water quality－Determination of nitrite nitrogen and nitrate nitrogen and the sum of both by flow analysis (CFA and FIA) and spectrometric detection
- KS D 2573-2005 Methods for determination of nitrogen in zirconium and zirconium alloys
- KS M 0027-1993 General Rules for Analytical Methods in Gas Chromatography Mass Spectrometry
- KS D 1910-6-2023 Method for chemical analysis of ferrochromium — Part 6: Determination of nitrogen content
- KS L 1613-2023 Methods for chemical analysis of fine silicon nitride powders for fine ceramics
- KS L 3318-2001 METHODS FOR CHEMICAL ANALYSIS OF FINE SILICON NITRIDE POWDERS FOR FINE CERAMICS
- KS M ISO 15672-2022 Rubber and rubber additives－Determination of total nitrogen content using an automatic analyser
Professional Standard - Environmental Protection, Total nitrogen analysis method
- HJ/T 102-2003 The technical requirement for water quality automatic analyzer of total nitrogen
GOSTR, Total nitrogen analysis method
KR-KS, Total nitrogen analysis method
GSO, Total nitrogen analysis method
- BH GSO ISO 13878:2016 Soil quality -- Determination of total nitrogen content by dry combustion ("elemental analysis")
- OS GSO ISO 29441:2013 Water quality -- Determination of total nitrogen after UV digestion -- Method using flow analysis (CFA and FIA) and spectrometric detection
- GSO ISO 29441:2013 Water quality -- Determination of total nitrogen after UV digestion -- Method using flow analysis (CFA and FIA) and spectrometric detection
- GSO ISO 15672:2015 Rubber and rubber additives -- Determination of total nitrogen content using an automatic analyser
- OS GSO ISO 15672:2015 Rubber and rubber additives -- Determination of total nitrogen content using an automatic analyser
International Organization for Standardization (ISO), Total nitrogen analysis method
- ISO 13878:1998 Soil quality - Determination of total nitrogen content by dry combustion ("elemental analysis")
- ISO 6658:1985 Sensory analysis; Methodology; General guidance
- ISO 6658:2005 Sensory analysis - Methodology - General guidance
- ISO 6658:2017 Sensory analysis - Methodology - General guidance
NO-SN, Total nitrogen analysis method
- NS 4745-1991 Water analysis - Determination of the sum of nitrite nitrogen and nitrate nitrogen
- NS 4743-1993 Water analysis. Determination of total nitrogen after oxidation with peroxodisulphate
American Society for Testing and Materials (ASTM), Total nitrogen analysis method
- ASTM D3590-02 Standard Test Methods for Total Kjeldahl Nitrogen in Water
- ASTM D3590-11 Standard Test Methods for Total Kjeldahl Nitrogen in Water
- ASTM D3590-17 Standard Test Methods for Total Kjeldahl Nitrogen in Water
- ASTM D2973-71(1998) Standard Test Method for Total Nitrogen in Peat Materials
- ASTM D8001-16 Standard Test Method for Determination of Total Nitrogen, Total Kjeldahl Nitrogen by Calculation, and Total Phosphorus in Water, Wastewater by Ion Chromatography
- ASTM D2973-71(2004) Standard Test Method for Total Nitrogen in Peat Materials
- ASTM D2973-22 Standard Test Method for Total Nitrogen in Peat Materials
- ASTM D8001-16e1 Standard Test Method for Determination of Total Nitrogen, Total Kjeldahl Nitrogen by Calculation, and Total Phosphorus in Water, Wastewater by Ion Chromatography
- ASTM D2973-10 Standard Test Method for Total Nitrogen in Peat Materials
- ASTM D2973-16 Standard Test Method for Total Nitrogen in Peat Materials
- ASTM D2973-10e1 Standard Test Method for Total Nitrogen in Peat Materials
- ASTM D2973-23 Standard Test Method for Total Nitrogen in Peat Materials
- ASTM D3179-02 Standard Test Methods for Nitrogen in the Analysis Sample of Coal and Coke
- ASTM D3179-89(2002) Standard Test Methods for Nitrogen in the Analysis Sample of Coal and Coke
- ASTM D3179-89(1997)e1 Standard Test Methods for Nitrogen in the Analysis Sample of Coal and Coke
- ASTM D3179-02e1 Standard Test Methods for Nitrogen in the Analysis Sample of Coal and Coke
- ASTM D3179-89(1997) Standard Test Methods for Nitrogen in the Analysis Sample of Coal and Coke
Professional Standard - Building Materials, Total nitrogen analysis method
- JC/T 2342-2015 Method for the quantitative phase analysis of silicon nitride
Professional Standard - Agriculture, Total nitrogen analysis method
- GB 10220-1988 General Introduction to Sensory Analysis Methods
- GB 609-1988 General method for the determination of total nitrogen content of chemical reagents
- GB/T 609-2018(XG1-2024) Chemical Reagents General Method for Determination of Total Nitrogen
Indonesia Standards, Total nitrogen analysis method
- SNI 4146-2013 Method for determination of total nitrogen content in sediment by Kjeldahl titration method
- SNI 19-1501-1989 Test methods for total nitrogen oxide in air
German Institute for Standardization, Total nitrogen analysis method
- DIN ISO 13878:1998 Soil quality - Determination of total nitrogen content by dry combustion ("elemental analysis") (ISO 13878:1998)
- DIN EN 15750:2010-02 Fertilizers - Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods; German version EN 15750:2009
- DIN CEN/TS 15750:2008 Fertilizers - Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods; German version CEN/TS 15750:2008
Professional Standard - Non-ferrous Metal, Total nitrogen analysis method
- YS/T 575.14-2006 Chemical analysis method of bauxite ore-tribromoarsine spectrophotometric determination of total rare earth oxides
- YS/T 575.14-2007 Methods for chemical analysis of bauxite.Part 14:Determination the total content of rare earth oxide.Tribromo-arsenazo photometric method
- YS/T 536.2-2006 Bismuth Chemical Analysis Method 1,10-Phenanthroline Spectrophotometric Determination of Iron Content
- YS/T 74.7-1994 Cadmium Chemical Analysis Method 1,10-Phenanthroline Spectrophotometric Determination of Iron Content
Standard Association of Australia （SAA）, Total nitrogen analysis method
- AS 1871.11:1976 List of methods for examination of waters Nitrogen (total Kjeldahl incl. ammoniacal)
- AS K1.12:1967 Methods for the analysis of iron and steel, Part 12: Nitrogen in steel: volumetric
- AS K1.12:1959 Methods for the analysis of iron and steel, Part 12: Method for the determination of nitrogen in steel
- AS 1050.12:1983/Amdt 1:1984 Steel analysis methods Determination of nitrogen in steel (steam distillation titration method)
- AS 1050.12:1983(R2016) Steel analysis methods Determination of nitrogen in steel (steam distillation titration method)
Taiwan Provincial Standard of the People's Republic of China, Total nitrogen analysis method
VDI - Verein Deutscher Ingenieure, Total nitrogen analysis method
- VDI 2456 Blatt 10-1990 Gaseous emission measurement; analytical determination of the sum of nitrogen monoxide and nitrogen dioxide; dimethylphenol method
- VDI 2456 Blatt 10-1989 Gaseous emission measurement; analytical determination of the sum of nitrogen monoxide and nitrogen dioxide; dimethylphenol method
AT-ON, Total nitrogen analysis method
- ONORM L 1095-2002 Chemical analyses of soils - Determination of total nitrogen by dry combustion
- ONORM L 1091-1999 Chemical analysis of soils - Determination of inorganic nitrogen Nmin-method
South African Bureau of Standard, Total nitrogen analysis method
RU-GOST R, Total nitrogen analysis method
RO-ASRO, Total nitrogen analysis method
- STAS SR 13300-5-1994 `Starches. Methods of analysis. Total ash determination
- STAS SR 13348-1-1996 Tea. Analysis methods. Determination of proteic nitrogen by the Kjeldahl method. Spectrophotometric method
TR-TSE, Total nitrogen analysis method
- TS 2428-1976 METHODS FOR THE CHEMICAL ANALYSIS OF IRON AND STEELS DETERMINATION OF NITROGEN CONTENT
- TS 602-1972 CHEMICAL ANALYSIS OF STEELS DETERMINATION OF TOTAL SILICON (GRAVIMETRIC METHOD)
- TS 3651-1981 METHODS FOR THE ANALYSIS OF WATER — DETERMINATION OF IRON CONTENT — 1,10 Phenanthroline Spectrophotometry Method
Group Standards of the People's Republic of China, Total nitrogen analysis method
- T/HNNMIA 63-2023 Chemical analysis methods of amidoxime resins-Determination of nitrogen content-Elemental analysis
- T/QAS 071-2021 Determination of total nitrogen in brine Kjeldahl method
- T/GRM 049-2022 Determination of Mercury in Crude Oil
BE-NBN, Total nitrogen analysis method
- NBN T 91-255-1976 Water analysis methods - Determination of the ammoniacal and organic nitrogen - (Kjeldahl nitrogen)
Hebei Provincial Standard of the People's Republic of China, Total nitrogen analysis method
- DB13/T 1224-2010 Determination method of total nitrogen in organic chemical products
工業和信息化部, Total nitrogen analysis method
- YS/T 1179.3-2017 Methods for chemical analysis of aluminum slag Part 3: Determination of carbon and nitrogen content Elemental analyzer method
- YS/T 1467.10-2021 Hafnium Chemical Analysis Methods Part 10: Determination of Oxygen and Nitrogen Amounts
Xinjiang Provincial Standard of the People's Republic of China, Total nitrogen analysis method
Danish Standards Foundation, Total nitrogen analysis method
- DS/ISO 29441:2010 Water quality - Determination of total nitrogen after UV digestion - Method using flow analysis (CFA and FIA) and spectrometric detection
- DS/EN 15750:2010 Fertilizers - Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods
- DS/EN ISO 13395:1997 Water quality - Determination of nitrite nitrogen and nitrate nitrogen and the sum of both by flow analysis (CFA and FIA) and spectrometric detection
中華人民共和國國家質量監督檢驗檢疫總局、中國國家標準化管理委員會, Total nitrogen analysis method
- GB/T 19143-2017 Analytical method of element for carbon,hydrogen ,oxygen and nitrogen in rock organics
- GB/T 14265-2017 General rule of chemical analysis for hydrogen,oxygen,nitrogen,carbon and sulfur in metallic materials
Lithuanian Standards Office , Total nitrogen analysis method
- LST EN 15750-2010 Fertilizers - Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods
CZ-CSN, Total nitrogen analysis method
Professional Standard - Electron, Total nitrogen analysis method
Professional Standard - Education, Total nitrogen analysis method
- JY/T 0589.1-2020 General principles of thermal analysis methods Part 1: General principles
Professional Standard - Ferrous Metallurgy, Total nitrogen analysis method
- YB/T 174.1-2000 Chemical analysis for silicon nitride bonded silicon carbide product.Determination of silicon nitride content.High pressure dissolve specimen method
European Committee for Standardization (CEN), Total nitrogen analysis method
- PD CEN/TS 15750:2008 Fertilizers - Determination of different forms of nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods
YU-JUS, Total nitrogen analysis method
- JUS B.H8.320-1988 Methods of analysis of coal and coke. Determination of nitrogen ccmtent - Makro Kjeldahl nethod
PL-PKN, Total nitrogen analysis method
PH-BPS, Total nitrogen analysis method
- PTS 98-1970 Standardization of the Method of Test for the Determination of Total Nitrogen Content.Devarda Method