trace nitrogen content

trace nitrogen content, Total:143 items.

The international standard classification for "trace nitrogen content" includes: Gases for industrial application , Ferroalloys , Fertilizers .

The Chinese standard classification for "trace nitrogen content" includes: Industrial gas and chemical gas , Photographic-grade chemicals , Steel and iron alloy analysis method , Basic standards and general methods on chemical fertilizers , Soil and fertilizer in general .

General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China

GB/T 24583.2-2019 Vanadium-nitrogen—Determination of nitrogen content—Thermal conductimetric method after fusion in a current of inert gas
GB/T 41964-2022 Photography—Processing waste—Determination of ammoniacal nitrogen (microdiffusion method)
SPC GB/T 24583.2-2019 Vanadium-nitrogen -- Determination of nitrogen content -- Thermal conductimetric method after fusion in a current of inert gas (TEXT OF DOCUMENT IS IN CHINESE)
GB/T 41965-2022 Photography—Processing waste—Determination of total amino nitrogen (microdiffusion Kjeldahl method)
GB/T 6625-1986 Test methods for nitrogen content of nitrogen-doped getter
GB 3597-1983 Determination of nitrate nitrogen content in fertilizers Nitrogen reagent gravimetric method
GB/T 3597-2002 Fertilizer - Determination of nitrate nitrogen content - Nitron gravimetric method
GB/T 14605-1993 Determination of trace argon, nitrogen and krypton in oxygen－Gas chromatographic method
GB/T 24583.2-2019(英文版) 钒氮合金　氮含量的测定惰性气体熔融热导法
GB/T 24583.2-2009 Vanadium—Nitrogen alloy—Determination of nitrogen content—Thermal conductimetric method after fusion in a current of inert gas

Professional Standard - Petrochemical Industry

SH/T 0413-1992 Determination of minor basic nitrogen in liquid paraffin

Professional Standard - Ferrous Metallurgy

YB/T 4528-2016 Nitrogen-bearing ferrochromium and nitride ferrochrome with high nitrogen content. Determination of nitrogen contenr. Thermal conductimetric method after fusion in a current of inert gas
YB/T 4529-2016 Nitrogen-bearing ferromanganese. Determination of nitrogen content. Thermal conductimetric method after fusion in a current of inert gas
YB/T 4566.1-2016 Ferrovanadium nitride. Determination of conduct. Thermal conductimetric method after fusion in a current of inert gas

Heilongjiang Provincial Standard of the People's Republic of China

DB23/T 2963-2021 Determination of Trace Calcium Content in Natural Flake Graphite by Calcium-Arsenazo Ⅲ Spectrophotometric Method

Group Standards of the People's Republic of China

T/NAIA 009-2020 Determination of soil microbial biomass nitrogen
T/SAASS 197-2025 Liquid nitrogen fertilizer containing medium elements

Anhui Provincial Standard of the People's Republic of China

DB34/T 3690-2020 Determination of carbon dioxide and nitrogen content in liquefied petroleum gas

Professional Standard - Agriculture

NY/T 1116-2014 Fertilizer - Determination for content of nitrate nitrogen, ammonium nitrogen and amidonitrogen
NY/T 2419-2013 Determination of total nitrogen in plant - Automatic kjeldahl apparatus method
NY/T 2542-2014 Fertilizers. Determination of total nitrogen nitrogen content

South African Bureau of Standard

SANS 333:1996 Coal - Determination of nitrogen - Semi-micro Kjeldahl method
SANS 8968-5:2006 Milk - Determination of nitrogen content - Part 5: Determination of protein-nitrogen content
SANS 8968-4:2006 Milk - Determination of nitrogen content Part 4: Determination of non-protein-nitrogen content

Gosstandart of Russia

GOST 13301-1967 Organic chemical products. Method of test for microdetermination of nitrogen
GOST 8775.4-1987 Lithium. Method of determination of nitrogen
GOST 26107-1984 Soils. Methods for determination of total nitrogen
GOST 21600.6-1983 Ferrochrome. Method for the determination of nitrogen
GOST 15933.11-1970 Ferroniobium. Method for the determination of nitrogen content
GOST 34111-2017 Juice products. Determination of nitrogen content by Kjeldahl method

German Institute for Standardization

DIN 51722-1:1990-07 Testing of solid fuels; determination of nitrogen content; semi-micro Kjeldahl method
DIN CEN/TS 15558:2007 Fertilizers - Determination of nitric and ammoniacal nitrogen according to Ulsch; German version CEN/TS 15558:2007
DIN CEN/TS 15559:2007 Fertilizers - Determination of nitric and ammoniacal nitrogen according to Arnd; German version CEN/TS 15559:2007
DIN EN ISO 8968-4:2002 Milk - Determination of nitrogen content - Part 4: Determination of the non-protein-nitrogen content (ISO 8968-4:2001); German version EN ISO 8968-4:2001
DIN EN ISO 8968-5:2002 Milk - Determination of nitrogen content - Part 5: Determination of protein-nitrogen content (ISO 8968-5:2001); German version EN ISO 8968-5:2001
DIN EN ISO 8968-3:2007-09 Milk - Determination of nitrogen content - Part 3: Block-digestion method (Semi-micro rapid routine method) (ISO 8968-3:2004); German version EN ISO 8968-3:2007
DIN EN 18198:2025-06 Algae and algae products - Nitrogen content measurement and protein content calculation for micro- and microalgae; German and English version prEN 18198:2025
DIN 51722-1:1990 Testing of solid fuels; determination of nitrogen content; semi-micro Kjeldahl method
DIN EN ISO 8968-3:2007 Milk - Determination of nitrogen content - Part 3: Block-digestion method (Semi-micro rapid routine method) (ISO 8968-3:2004); English version of DIN EN ISO 8968-3:2007-09
DIN EN ISO 8968-4:2002-06 Milk - Determination of nitrogen content - Part 4: Determination of the non-protein-nitrogen content (ISO 8968-4:2001)
DIN EN ISO 20483:2014-03 Cereals and pulses - Determination of the nitrogen content and calculation of the crude protein content - Kjeldahl method (ISO 20483:2013); German version EN ISO 20483:2013
DIN EN ISO 8968-5:2002-06 Milk - Determination of nitrogen content - Part 5: Determination of protein-nitrogen content (ISO 8968-5:2001)

Portuguese Institute of Quality

NP 1996-2000 Cereals and pulses Determiantion of the nitrogen content and calculation of the raw protein content Kjeldhal method
NP 3646-1987 fertilizer. Measurement of total nitrogen content

Yugoslav Association for Standardization

JUS H.F8.131-1986 Gases. Determination of nitrogen content. Indirect method
JUS H.F8.132-1986 Gases. Determination of nitrogen content. Gas chromatographic method

COMMISSION FOR THE STANDARDS, METROLOGY AND QUALITY OF VIETNAM (STAMEQ)

TCVN 6014-2007 Hard coal.Determination of nitrogen.Semi-micro Kjeldahl method

Ente Nazionale Italiano di Unificazione

UNI EN ISO 8968-5:2002 Milk - Determination of nitrogen content - Determination of protein- nitrogen content
UNI EN ISO 8968-4:2002 Milk - Determination of nitrogen content - Determination of non-protein nitrogen content
UNI EN ISO 20483:2014 Cereals and pulses - Determination of the nitrogen content and calculation of the crude protein content - Kjeldahl method
UNI EN ISO 8968-3:2008 Milk - Determination of nitrogen content - Part 3: Block-digestion method (Semi-micro rapid routine method)

British Standards Institution (BSI)

BS EN 15558:2009 Fertilizers - Determination of nitric and ammoniacal nitrogen according to Ulsch
BS EN ISO 8968-3:2007 Milk. Determination of nitrogen content. Block-digestion method (Semi-micro rapid routine method)
BS EN ISO 8968-5:2002 Milk. Determination of nitrogen content. Determination of protein-nitrogen content
25/30513175 DC BS EN 18198 Algae and algae products - Nitrogen content measurement and protein content calculation for micro- and microalgae
BS EN ISO 8968-4:2002 Milk. Determination of nitrogen content. Determination of non-protein nitrogen content
BS ISO 6853:2002 Photography - Processing waste - Determination of ammoniacal nitrogen (microdiffusion method)
BS EN ISO 8968-3:2004 Milk - Determination of nitrogen content - Block-digestion method (Semi-micro rapid routine method)
BS EN ISO 8968-1:2002 Milk. Determination of nitrogen content-Kjeldahl method
BS ISO 8968-3:2004 Milk - Determination of nitrogen content - Block-digestion method (Semi-micro rapid routine method)
BS DD CEN/TS 15478:2006 Fertilizers - Determination of total nitrogen in urea

Bureau of Indian Standards

IS 18851-2024 Milk - Determination of Nitrogen Content - Block-Digestion Method (Semi-Micro Rapid Routine Method)
IS 14825-2000 Animal Feeding Stuff - Determination of Nitrogen Content and Calculation of Crude Protein Content - Kjeldahl Method

Korean Agency for Technology and Standards (KATS)

KS M ISO 6851:2002 Photography-Processing waste-Determination of total amino nitrogen-Microdiffusion Kjeldahl method
KS M ISO 4176-2006(2011) Fertilizers－Determination of nitrate nitrogen content－Nitron gravimetric method
KS B 5360-1990 Continuous Analysers for Oxides of Nitrogen in Ambient Air
KS B 5360-2001 Continuous Analysers for Oxides of Nitrogen in Ambient Air
KS E ISO 333-2018 Coal－Determination of nitrogen－Semi-micro Kjeldahl method
KS E ISO 333-2003(2013) Coal－Determination of nitrogen－Semi-micro Kjeldahl method
KS E ISO 333:2003 Coal－Determination of nitrogen－Semi-micro Kjeldahl method
KS M ISO 5397:2002 Leather－Determination of nitrogen content and “hide substance”－Titrimetric method

International Organization for Standardization (ISO)

ISO 8968-5:2001|IDF 20-5:2001 Determination of milk nitrogen content Part 5: Determination of protein nitrogen content
ISO 8968-4:2001 | IDF 20-4:2001 Milk — Determination of nitrogen content — Part 4: Determination of non-protein-nitrogen content
ISO 8968-5:2001 Milk - Determination of nitrogen content - Part 5: Determination of protein-nitrogen content
ISO 8968-4:2001 Milk - Determination of nitrogen content - Part 4: Determination of non-protein-nitrogen content
ISO 8968-5:2001 | IDF 20-5:2001 Milk — Determination of nitrogen content — Part 5: Determination of protein-nitrogen content
ISO 8968-4:2001|IDF 20-4:2001 Determination of milk nitrogen content Part 4: Determination of non-protein nitrogen content
ISO 8968-3:2004 | IDF 20-3:2004 Milk — Determination of nitrogen content — Part 3: Block-digestion method (Semi-micro rapid routine method)
ISO/TS 11725:2002 Solid mineral fuels - Determination of nitrogen - Semi-micro gasification method
ISO 6853:1987 Photography; Processing waste; Determination of ammoniacal nitrogen content; Microdiffusion method
ISO 333:1983 Coal; Determination of nitrogen; Semi-micro Kjeldahl method
ISO 5397:1984 Leather; Determination of nitrogen content and "hide substance"; Titrimetric method

Standards Norway

NS 4869:1985 Air quality — Nitrogen dioxide content in workplace atmosphere — Colometric metod
NS 4869-1985 Air quality - Nitrogen dioxide content in workplace atmosphere - Colometric metod

Association Francaise de Normalisation

NF V03-032:2024 Foodstuffs - Determination of the nitrogen content by the Kjeldahl method and calculation of the protein content
NF V04-221-5:2002 Milk - Determination of nitrogen content - Part 5 : determination of protein-nitrogen content.
NF U42-141:1984 Fertilizers. Determination of nitrate nitrogen content. Nitrogen gravimetric method.
NF V04-221-4:2002 Milk - Determination of nitrogen content - Part 4 : determination of non-protein nitrogen content.
NF EN ISO 8968-3:2007 Milk - Determination of nitrogen content - Part 3: bulk mineralization method (Routine semi-micro rapid method)
NF V04-211:1971 MILK. DETERMINATION OF TOTAL NITROGEN CONTENT. (KJELDAHL METHOD).
NF X43-009:1973 Nitrogen dioxyde content of the atmosphere (griess saltzman reaction).
NF U42-119:1965 Products used in agriculture. Determination of nitrogen content in class C nitrogenous fertilizers.
NF EN ISO 20483:2014 Cereals and legumes - Determination of nitrogen content and calculation of crude protein content - Kjeldahl method
NF U42-117:1965 Products used in agriculture. Fertilizers. Determination of nitrogen content in class a nitrogenous fertilizers.
NF V59-202:1988 Collagenes. Determination of the nitrogen content.
NF U42-118:1965 Products used in agriculture. Determination of nitrogen content in class B nitrogenous fertilizers.

GCC Standardization Organization

GSO ISO 8968-5:2014 Milk -- Determination of nitrogen content -- Part 5: Determination of protein-nitrogen content
GSO ISO 5983:2002 ANIMAL FEEDING STUFFS – DETERMINATION OF NITROGEN CONTENT AND CALCULATION OF CRUDE PROTEIN CONTENT
GSO ISO 20483:2013 Cereals and pulses -- Determination of the nitrogen content and calculation of the crude protein content -- Kjeldahl method

Japanese Industrial Standards Committee (JISC)

JIS K 0104:2000 Methods for determination of nitrogen oxides in flue gas
JIS K 0104:1984 Methods for determination of oxides of nitrogen in flue gases
JIS K 0104:2011 Methods for determination of nitrogen oxides in flue gas
JIS B 7953:1997 Continuous analysers for oxides of nitrogen in ambient air
JIS K 0227:1984 Analytical method for trace nitrogen oxides in diluent gas and zero gas

Indonesia Standards

SNI 19-1432-1989 Exhaust-gases, Test methods for nitrogen dioxide content
SNI 19-1502-1989 Test method for nitrogen oxides content of air in working area

The Directorate General of Specifications and Metrology (DGSM)

OS GSO ISO 8968-5:2014 Milk -- Determination of nitrogen content -- Part 5: Determination of protein-nitrogen content
OS GSO ISO 8968-3:2014 Milk -- Determination of nitrogen content -- Part 3: Block-digestion method (Semi-micro rapid routine method)
OS GSO ISO 20483:2013 Cereals and pulses -- Determination of the nitrogen content and calculation of the crude protein content -- Kjeldahl method

Danish Standards Foundation

DS/EN ISO 8968-4:2002 Milk - Determination of nitrogen content - Part 4: Determination of non-protein nitrogen content
DS/EN ISO 8968-5:2002 Milk - Determination of nitrogen content - Part 5: Determination of protein-nitrogen content
DANSK DS/EN ISO 8968-3:2007 Milk - Determination of nitrogen content - Part 3: Block-digestion method (Semi-micro rapid routine method)
DS/EN ISO 8968-3:2007 Milk - Determination of nitrogen content - Part 3: Block-digestion method (Semi-micro rapid routine method)
DS/EN ISO 20483:2007 Cereals and pulses - Determination of the nitrogen content and calculation of the crude protein content - Kjeldahl method

International Dairy Federation (IDF)

IDF 20-5-2001 Milk - Determination of nitrogen content - Part 5: Determination of protein-nitrogen content
IDF 20-4-2001 Milk - Determination of nitrogen content - Part 4: Determination of non-protein-nitrogen content

Netherlands Institute for Standardization

NEN 2044-1985 Air quahty - txhaust gases Wet chemical determination of nitrogen oxides content
NEN 6642-1992 Water-Calculation of total nitrogen content

National Standardisation Body (ASRO)

SR ISO 4176:1981 Fertilizers. Determination of nitrate nitrogen content. Nitrogen gravimetric method
STAS 6843-1982 STEELS ANI) CAST 1RONS Determination of nitrogen content
SR 184-25-1998 Ethyl alcohol. Determination of ammonia and azotic bases nitrogen content
STAS 6182/4-1979 WINE Determination of total nitrogen content
STAS 7184/2-1985 SOILS Nitrogen content determination

Universal Oil Products Company (UOP)

UOP 936-2020 Combined Nitrogen in LPG including Propylene by Chemiluminescence

Polski Komitet Normalizacyjny (PKN)

PN Z04075-1961 Speedy Me?hod for De?er mina?ion of Ni?rogen Oxyde* in Air
PN C87077-1992 Nitrogenous fertilizers. Determination of cooper
PN C04576 ArkusZ14-1973 Water and wastewater Nitrogen compound content testing Calculation of total nitrogen

Magyar Szabványügyi Testület

MSZ 6174-1982 Trace element content
MSZ KGST 1239-1978 Determination of nitrogen content in iron and steel

American Society for Testing and Materials (ASTM)

ASTM E147-61(1996) Standard Specification for Apparatus For Microdetermination Of Nitrogen By Kjeldahl Method
ASTM E147-61(2001) Standard Specification for Apparatus For Microdetermination Of Nitrogen By Kjeldahl Method
ASTM E147-61(2006) Standard Specification for Apparatus For Microdetermination Of Nitrogen By Kjeldahl Method

Kingdom of Bahrain Testing and Metrology Directorate

BH GSO ISO 8968-3:2016 Milk -- Determination of nitrogen content -- Part 3: Block-digestion method (Semi-micro rapid routine method)

Swedish Institute for Standards

SS-ISO 333:1996 Coal - Determination of nitrogen - Semi-micro Kjeldahl method
SIS SS 02 84 15-1980 Workplace atmosphere — Nitrogen dioxide content in air — Colorimetric method

European Committee for Standardization (CEN)

EN ISO 8968-3:2007 Milk - Determination of nitrogen content - Part 3: Block-digestion method (Semi-micro rapid routine method)
EN ISO 8968-5:2001 Milk - Determination of nitrogen content - Part 5: Determination of protein-nitrogen content (ISO 8968-5:2001)

Spanish Association for Standardization (UNE)

UNE-EN ISO 8968-5:2002 Milk - Determination of nitrogen content - Part 5: Determination of protein-nitrogen content. (ISO 8968-5:2001)
AENOR UNE-EN ISO 8968-5:2002 Milk. Determination of nitrogen content. Part 5: Determination of protein nitrogen content. (ISO 8968-5:2001)

Bulgarian Institute for Standardization (BDS)

BGC ISO 5983:2001 Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Kjeldahl method

Czech Standards Institute (UNMZ)

CSN 65 4814-1976 Determinaíion of nitrogen oontent in fertilizers

American National Standards Institute （ANSI)

ANSI/PIMA IT4.48-1998 Photography (Processing) - Effluents - Determination of Ammoniacal Nitrogen Content - Microdiffusion Method

Lithuanian Standards Office

LST EN ISO 8968-5:2002 Milk - Determination of nitrogen content - Part 5: Determination of protein-nitrogen content (ISO 8968-5:2001)

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