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Kjeldahl method for plant total nitrogen

Kjeldahl method for plant total nitrogen, Total:191 items.

In the international standard classification, Kjeldahl method for plant total nitrogen involves: Water quality, Milk and milk products, Coals, Animal feeding stuffs, Soil quality. Pedology, External water conveyance systems, Analytical chemistry, Fruits. Vegetables, Wastes, Photography, Beverages, Sugar. Sugar products. Starch, General methods of tests and analysis for food products, Organic chemicals, Lubricants, industrial oils and related products, Cereals, pulses and derived products, Fertilizers, Leather technology, Food products in general, Tea. Coffee. Cocoa, Edible oils and fats. Oilseeds, Raw materials for rubber and plastics, Metalliferous minerals, Plastics, Petroleum products in general.

Group Standards of the People's Republic of China, Kjeldahl method for plant total nitrogen

T/QAS 071-2021 Determination of total nitrogen in brine Kjeldahl method
T/NAIA 044-2021 Urine Total Nitrogen Determination in Livestock Kjeldahl Method
T/NAIA 001-2020 Determination of ammoniacal nitrogen in fermented feed Kjeldahl method
T/NAIA 060-2021 Determination of true protein in feed Kjeldahl method
T/NAIA 0139-2022 Diesel engine nitrogen oxide reducing agent urea aqueous solution (AUS 32) Determination of urea content Automatic Kjeldahl method

Association Francaise de Normalisation, Kjeldahl method for plant total nitrogen

NF V04-211:1971 MILK. DETERMINATION OF TOTAL NITROGEN CONTENT. (KJELDAHL METHOD).
NF EN 12135:1997 Jus de fruits et de légumes - Dosage de l'azote - Méthode de Kjeldahl.
NF X31-111*NF ISO 11261:1995 Soil quality. Determination of total nitrogen. Modified kjeldahl method.
NF ISO 11261:1995 Qualité du sol - Dosage de l'azote total - Méthode de Kjeldahl modifiée.
NF ISO 1871:2009 Produits alimentaires et aliments des animaux - Lignes directrices générales pour le dosage de l'azote selon la méthode de Kjeldahl
NF EN ISO 3188:1994 Amidons, fécules et produits dérivés - Dosage de l'azote selon la méthode de Kjeldahl - Méthode titrimétrique.
NF EN ISO 20483:2014 Céréales et légumineuses - Détermination de la teneur en azote et calcul de la teneur en protéines brutes - Méthode de Kjeldahl
NF EN 25663:1994 Qualité de l'eau - Dosage de l'azote Kjeldahl - Méthode après minéralisation au sélénium
NF EN ISO 5983-1:2005 Aliments des animaux - Détermination de la teneur en azote et calcul de la teneur en protéines brutes - Partie 1 : méthode Kjeldahl
NF EN 16169:2012 Boues, biodéchets traités et sols - Détermination de l'azote Kjeldahl
NF EN 13654-1:2002 Amendements du sol et supports de culture - Détermination de l'azote - Partie 1 : méthode de Kjeldahl modifiée
NF EN ISO 5378:1994 Amidons, fécules et produits dérivés - Dosage de l'azote selon la méthode de Kjeldahl - Méthode spectrophotométrique.
NF V03-750:2007 Cereals and pulses - Determination of the nitrogen content and calculation of the crude protein content - Kjeldahl method.
NF EN ISO 8968-1:2014 Lait et produits laitiers - Détermination de la teneur en azote - Partie 1 : méthode Kjeldahl et calcul de la teneur en protéines brutes
NF V04-221-1*NF EN ISO 8968-1:2014 Milk and milk products - Determination of nitrogen content - Part 1 : Kjeldahl principle and crude protein calculation
NF V03-050:1970 Agricultural food products. General directions for the determination of nitrogen with mineralization by the jkeldahl method.
NF EN ISO 8988:2006 Plastiques - Résines phénoliques - Détermination de la teneur en hexaméthylènetétramine - Méthode Kjeldahl, méthode à l'acide perchlorique et méthode à l'acide chlorhydrique

Jilin Provincial Standard of the People's Republic of China, Kjeldahl method for plant total nitrogen

DB22/T 1932-2013 Determination method of total nitrogen content in peat (Kjeldahl method)
DB22/T 1995-2014 Determination of feed grade choline chloride content Kjeldahl method

PL-PKN, Kjeldahl method for plant total nitrogen

PN C04576 ArkusZ12-1973 Water and waste water Tests for nitrogenDetermination of total nitrogen of Kjeldahl

VN-TCVN, Kjeldahl method for plant total nitrogen

TCVN 6498-1999 Soil quality.Determination of total nitrogen.Modifierd Kejldahl method
TCVN 6014-2007 Hard coal.Determination of nitrogen.Semi-micro Kjeldahl method
TCVN 5987-1995 Water quality.Determination of Kjeldahl nitrogen.Method after mineralization with selenium
TCVN 4328-1-2007 Animal feeding stuffs.Determination of nitrogen content and calculation of crude protein content.Part 1: Kjeldahl method

Association of Official Analytical Chemists (AOAC), Kjeldahl method for plant total nitrogen

AOAC 991.20 AOAC Official Method 991.20 Nitrogen (Total) in Milk Kjeldahl Methods

American Society for Testing and Materials (ASTM), Kjeldahl method for plant total nitrogen

ASTM D3590-11 Standard Test Methods for Total Kjeldahl Nitrogen in Water
ASTM D3590-02 Standard Test Methods for Total Kjeldahl Nitrogen in Water
ASTM D3590-17 Standard Test Methods for Total Kjeldahl Nitrogen in Water
ASTM E147-61(2017) Standard Specification for Apparatus for Microdetermination of Nitrogen by Kjeldahl Method
ASTM E258-67(2002) Standard Test Method for Total Nitrogen in Organic Materials by Modified Kjeldahl Method
ASTM D3228-22 Standard Test Method for Total Nitrogen in Lubricating Oils and Fuel Oils by Modified Kjeldahl Method
ASTM UOP432-65T Total Nitrogen in Liquefied Petroleum Gases by Acid Extraction-Kjeldahl Procedure
ASTM D8001-16e1 Standard Test Method for Determination of Total Nitrogen, Total Kjeldahl Nitrogen by Calculation, and Total Phosphorus in Water, Wastewater by Ion Chromatography
ASTM D8001-16 Standard Test Method for Determination of Total Nitrogen, Total Kjeldahl Nitrogen by Calculation, and Total Phosphorus in Water, Wastewater by Ion Chromatography
ASTM E258-67(1996)e1 Standard Test Method for Total Nitrogen in Organic Materials by Modified Kjeldahl Method
ASTM D2868-17 Standard Test Method for Nitrogen Content (Kjeldahl) and Hide Substance Content of Leather, Wet Blue and Wet White
ASTM D8083-16 Standard Test Method for Total Nitrogen, and Total Kjeldahl Nitrogen (TKN) by Calculation, in Water by High Temperature Catalytic Combustion and Chemiluminescence Detection
ASTM D3228-20 Standard Test Method for Total Nitrogen in Lubricating Oils and Fuel Oils by Modified Kjeldahl Method
ASTM D3228-19 Standard Test Method for Total Nitrogen in Lubricating Oils and Fuel Oils by Modified Kjeldahl Method
ASTM D3228-08(2019) Standard Test Method for Total Nitrogen in Lubricating Oils and Fuel Oils by Modified Kjeldahl Method
ASTM D8083-16(2023) Standard Test Method for Total Nitrogen, and Total Kjeldahl Nitrogen (TKN) by Calculation, in Water by High Temperature Catalytic Combustion and Chemiluminescence Detection
ASTM D3228-08(2014) Standard Test Method for Total Nitrogen in Lubricating Oils and Fuel Oils by Modified Kjeldahl Method
ASTM UOP384-76 Nitrogen in Petroleum Distillates and Heavy Oils by Acid Extraction or Direct Kjeldahl Procedure

Korean Agency for Technology and Standards (KATS), Kjeldahl method for plant total nitrogen

KS I ISO 11261-2008(2018) Soil quality－Determination of total nitrogen－Modified Kjeldahl method
KS I ISO 11261-2008(2021) Soil quality－Determination of total nitrogen－Modified Kjeldahl method
KS M ISO 6851-2002(2017) Photography－Processing waste－Determination of total amino nitrogen－Microdiffusion Kjeldahl method
KS E ISO 333-2003(2013) Coal－Determination of nitrogen－Semi-micro Kjeldahl method
KS H ISO 3188-2008(2018) Starches and derived products－Determination of nitrogen content by the Kjeldahl method－Titrimetric method
KS H ISO 1871-2013(2018) Agricultural food products ― General directions for the determination of nitrogen by the Kjeldahl method
KS H ISO 5378-2008(2018) Starches and derived products－Determination of nitrogen content by the Kjeldahl method－Spectrophotometric method
KS I ISO 5663-2007(2017) Water quality－Determination of Kjeldahl nitrogen－Method after mineralization with selenuium
KS I ISO 5663:2007 Water quality－Determination of Kjeldahl nitrogen－Method after mineralization with selenuium
KS I ISO 11261:2008 Soil quality-Determination of total nitrogen-Modified Kjeldahl method
KS H ISO 3188:2008 Starches and derived products－Determination of nitrogen content by the Kjeldahl method－Titrimetric method
KS H ISO 1871:2013 Agricultural food products ― General directions for the determination of nitrogen by the Kjeldahl method
KS H ISO 1871:2008 Agricultural food products-General directions for the determination of nitrogen by the Kjeldahl method
KS H ISO 5378:2008 Starches and derived products－Determination of nitrogen content by the Kjeldahl method－Spectrophotometric method
KS M ISO 6851:2002 Photography-Processing waste-Determination of total amino nitrogen-Microdiffusion Kjeldahl method
KS M ISO 8988-2010(2020) Plastics－Phenolic resins－Determination of hexamethylenetetramine content－Kjeldahl method, perchloric acid method and hydrochloric acid method
KS M ISO 24698-2:2010 Rubber, raw－Determination of bound acrylonitrile content in acrylonitrile-butadiene rubber(NBR)－Part 2：Kjeldahl method

Danish Standards Foundation, Kjeldahl method for plant total nitrogen

DS 242:1988 Water quality. Kjeldahl-nitrogen. Kjeldahl-method
DS/EN 13342:2001 Characterisation of sludges - Determination of total Kjeldahl nitrogen
DS/EN ISO 8968-1:2002 Milk - Determination of nitrogen content - Part 1: Kjeldahl method
DS/EN 12135:1998 Fruit and vegetable juices - Determination of nitrogen content - Kjeldahl method
DS/EN ISO 3188:1995 Starches and derived products - Determination of nitrogen content by the Kjeldahl method - Titrimetric method
DS/ISO 5663:1994 Water quality - Determination of Kjeldahl nitrogen - Method after mineralization with selenium
DS/EN ISO 20483:2007 Cereals and pulses - Determination of the nitrogen content and calculation of the crude protein content - Kjeldahl method
DS/ISO 1871:2009 Food and feed products - General guidelines for the determination of nitrogen by the Kjeldahl method
DS/EN ISO 5378:1995 Starches and derived products - Determination of nitrogen content by the Kjeldahl method - Spectrophometric method
DS/EN 25663:1994 Water quality-Determination of Kjeldahl nitrogen-Method after mineralization with selenium
DS/EN ISO 5983-1/AC:2009 Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Part 1: Kjeldahl method
DS/EN ISO 5983-1:2005 Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Part 1: Kjeldahl method
DS/EN 16169:2012 Sludge, treated biowaste and soil - Determination of Kjeldahl nitrogen
DS/EN 13654-1:2002 Soil improvers and growing media - Determination of nitrogen - Part 1: Modified Kjeldahl method
DS/EN ISO 8988:2007 Plastics - Phenolic resins - Determination of hexamethylenetetramine content - Kjeldahl method, perchloric acid method and hydrochloric acid method

IN-BIS, Kjeldahl method for plant total nitrogen

IS 5194-1969

AENOR, Kjeldahl method for plant total nitrogen

UNE 77318:2001 Soil quality. Determination of total nitrogen. Modified Kjeldahl method.
UNE-EN 12135:1998 Fruit and vegetable juices - Determination of nitrogen content - Kjeldahl method
UNE 32013:1995 COAL. DETERMINATION OF NITROGEN. SEMI-MICRO KJELDAHL METHOD.
UNE-EN ISO 3188:1995 STARCHES AND DERIVED PRODUCTS. DETERMINATION OF NITROGEN CONTENT BY THE KJELDAHL METHOD. TITRIMETRIC METHOD. (ISO 3188:1978).
UNE-EN ISO 20483:2014 Cereals and pulses - Determination of the nitrogen content and calculation of the crude protein content - Kjeldahl method (ISO 20483:2013)
UNE-EN 13654-1:2002 Soil improvers and growing media - Determination of nitrogen - Part 1: Modified Kjeldahl method
UNE-EN ISO 5983-1:2007 Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Part 1: Kjeldahl method (ISO 5983-1:2005)
UNE-EN 25663:1994 WATER QUALITY. DETERMINATION OF KJELDAHL NITROGEN. METHOD AFTER MINERALIZATION WITH SELENIUM. (ISO 5663:1984).
UNE-EN ISO 5378:1995 STARCHES AND DERIVED PRODUCTS. DETERMINATION OF NITROGEN CONTENT BY THE KJELDHAL METHOD. SPECTROPHOTOMETRIC METHOD. (ISO 5378:1978).

Indonesia Standards, Kjeldahl method for plant total nitrogen

SNI 4146-2013

British Standards Institution (BSI), Kjeldahl method for plant total nitrogen

BS ISO 6851:2001 Photography. Processing waste. Determination of total amino nitrogen (microdiffusion Kjeldahl method)
BS 7755-3.7:1995 Soil quality. Chemical methods. Determination of total nitrogen. Modified Kjeldahl method
DD ISO/TS 17837:2008 Milk and milk products. Determination of nitrogen content and crude protein calculation. Kjeldahl method
BS EN 25663:1993 Water quality. Determination of Kjeldahl nitrogen. Method after mineralization with selenium
BS ISO 1871:2009 Food and feed products - General guidelines for determination of nitrogen by Kjeldahl method
BS ISO 24698-2:2018 Rubber, raw. Determination of bound acrylonitrile content in acrylonitrile-butadiene rubber (NBR) - Kjeldahl method
BS ISO 24698-2:2008 Rubber, raw - Determination of bound acrylonitrile content in acrylonitrile-butadiene rubber (NBR) - Kjeldahl method

SE-SIS, Kjeldahl method for plant total nitrogen

SIS SS 18 71 63-1984 Coal - Determination of nitrogen - Macro Kjeldahl method
SIS SS 02 81 01-1992 Nitrogen content of water — Determination with Kjeldahl method after reduction with Devarda's alloy

International Organization for Standardization (ISO), Kjeldahl method for plant total nitrogen

ISO 332:1981 Coal — Determination of nitrogen — Macro Kjeldahl method
ISO 332:1974 Title missing - Legacy paper document
ISO 8968-1:2001 | IDF 20-1: 2001 Milk — Determination of nitrogen content — Part 1: Kjeldahl method
ISO 1871:2009 Food and feed products - General guidelines for the determination of nitrogen by the Kjeldahl method
ISO/TS 17837:2008 | IDF/RM 25: 2008 Processed cheese products — Determination of nitrogen content and crude protein calculation — Kjeldahl method
ISO 5663:1984 Water quality; Determination of Kjeldahl nitrogen; Method after mineralization with selenium
ISO 11261:1995 Soil quality - Determination of total nitrogen - Modified Kjeldahl method
ISO 3188:1978 Starches and derived products; Determination of nitrogen content by the Kjeldahl method; Titrimetric method
ISO 1871:1975 Agricultural food products; General directions for the determination of nitrogen by the Kjeldahl method
ISO 5378:1978 Starches and derived products; Determination of nitrogen content by the Kjeldahl method; Spectrophotometric method

Taiwan Provincial Standard of the People's Republic of China, Kjeldahl method for plant total nitrogen

CNS 3944-1976 Method for Determination of Total Kjeloahl Nitrogen in Polluted and Waste Water

RU-GOST R, Kjeldahl method for plant total nitrogen

GOST 34111-2017 Juice products. Determination of nitrogen content by Kjeldahl method
GOST R 55246-2012 Milk and milk products. Determination of non-protein nitrogen content by Kjeldahl method
GOST 26889-1986 Food-stuffs and food additives. General directions for the determinations of nitrogen content by the Kjeldahl method
GOST ISO/TS 17837-2013 Processed cheese products. Determination of nitrogen content and crude protein calculation. Kjeldahl method

ZA-SANS, Kjeldahl method for plant total nitrogen

SANS 333:1996 Coal - Determination of nitrogen - Semi-micro Kjeldahl method
SANS 8968-1:2006 Milk - Determination of nitrogen content Part 1: Kjeldahl method

Ningxia Provincial Standard of the People's Republic of China, Kjeldahl method for plant total nitrogen

DB64/T 1734-2020 Soil Hydrolyzable Nitrogen Determination Kjeldahl Method

BE-NBN, Kjeldahl method for plant total nitrogen

NBN T 91-255-1976 Water analysis methods - Determination of the ammoniacal and organic nitrogen - (Kjeldahl nitrogen)
NBN-EN ISO 5378:1994 Starches and derived products - Determination of nitrogen content by the Kjeldahl method - Spectrophotometric method (ISO 5378:1978)

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China, Kjeldahl method for plant total nitrogen

GB/T 41965-2022 Photography—Processing waste—Determination of total amino nitrogen(microdiffusion Kjeldahl method)
GB/T 5511-2008 Cereals and pulses.Determination of the nitrogen content and calculation of the crude protein content.Kjeldahl method
GB/T 9823-2008 Inspection of grain and oils.Determination of total nitrogen content in plant oilseeds residues
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

PT-IPQ, Kjeldahl method for plant total nitrogen

NP 1996-2000 Cereals and pulses Determiantion of the nitrogen content and calculation of the raw protein content Kjeldhal method
NP 1986-1991 Milks Determination of protein content. Kjeldahl technique

CZ-CSN, Kjeldahl method for plant total nitrogen

CSN 56 0020-1987 General directions for the determination f nitrogen by the Kjeldahl method
CSN ISO 1871:1994 Agricultural food products-General directions for the determination of nitrogen by the Kjeldahl method
CSN 65 4836-1983 Minerál fertilizers Methode for determination of total nitrogen content

International Dairy Federation (IDF), Kjeldahl method for plant total nitrogen

IDF 20-1-2001 Milk - Determination of nitrogen content - Part 1: Kjeldahl method
IDF/RM 25-2008 Milk and milk products - Determination of nitrogen content and crude protein calculation - Kjeldahl method

Lithuanian Standards Office , Kjeldahl method for plant total nitrogen

LST EN 12135-2001 Fruit and vegetable juices - Determination of nitrogen content - Kjeldahl method
LST EN ISO 8968-1:2002 Milk - Determination of nitrogen content - Part 1: Kjeldahl method (ISO 8968-1:2001)
LST EN ISO 3188:2000 Starches and derived products - Determination of nitrogen content by the Kjeldahl method - Titrimetric method (ISO 3188:1978)
LST EN ISO 20483:2007 Cereals and pulses - Determination of the nitrogen content and calculation of the crude protein content - Kjeldahl method (ISO 20483:2006)
LST EN 25663-2000 Water quality - Determination of Kjeldahl nitrogen - Method after mineralization with selenium (ISO 5663:1984)
LST EN 16169-2012 Sludge, treated biowaste and soil - Determination of Kjeldahl nitrogen
LST EN ISO 5378:2000 Starches and derived products - Determination of nitrogen content by the Kjeldahl method - Spectrophotometric method (ISO 5378:1978)
LST EN 13654-1-2002 Soil improvers and growing media - Determination of nitrogen - Part 1: Modified Kjeldahl method
LST EN ISO 5983-1:2005 Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Part 1: Kjeldahl method (ISO 5983-1:2005)
LST EN ISO 5983-1:2005/AC:2009 Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Part 1: Kjeldahl method (ISO 5983-1:2005/Cor 1:2008)

German Institute for Standardization, Kjeldahl method for plant total nitrogen

DIN EN 12135:1997-12 Fruit and vegetable juices - Determination of nitrogen content - Kjeldahl method; German version EN 12135:1997
DIN 51722-1:1990-07 Testing of solid fuels; determination of nitrogen content; semi-micro Kjeldahl method
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 3188:1994-10 Starches and derived products - Determination of nitrogen content by the Kjeldahl method - Titrimetric method (ISO 3188:1978); German version EN ISO 3188:1994
DIN EN ISO 5983-1 Berichtigung 1:2009-07 Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Part 1: Kjeldahl method (ISO 5983-1:2005); German version EN ISO 5983-1:2005, Corrigendum to DIN EN ISO 5983-1:2005-10; German version EN ISO 5983-1:20...
DIN EN ISO 5983-1:2005-10 Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Part 1: Kjeldahl method (ISO 5983-1:2005); German version EN ISO 5983-1:2005
DIN EN ISO 5378:1994-10 Starches and derived products - Determination of nitrogen content by the Kjeldahl method - Spectrophotometric method (ISO 5378:1978); German version EN ISO 5378:1994
DIN EN 16169:2012-11 Sludge, treated biowaste and soil - Determination of Kjeldahl nitrogen; German version EN 16169:2012
DIN EN 13654-1:2002-01 Soil improvers and growing media - Determination of nitrogen - Part 1: Modified Kjeldahl method; German version EN 13654-1:2001
DIN EN 25663:1993-11 Water quality; determination of Kjeldahl nitrogen; method after mineralization with selenium (ISO 5663:1984); German version EN 25663:1993
DIN EN ISO 20483:2014 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 8988:2006-11 Plastics - Phenolic resins - Determination of hexamethylenetetramine content - Kjeldahl method, perchloric acid method and hydrochloric acid method (ISO 8988:2006); German version EN ISO 8988:2006
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

Professional Standard - Environmental Protection, Kjeldahl method for plant total nitrogen

HJ 717-2014 Soil quality.Determination of total nitrogen.Modified Kjeldahl method
HJ/T 196-2005 Water quality - Determination of Kjeldahl-nitrogen Gas-phase molecular absorption spectrcmetry

未注明发布机构, Kjeldahl method for plant total nitrogen

BS EN ISO 3188:1994(1999) Starches and derived products — Determination of nitrogen content by the Kjeldahl method — Titrimetric method
BS EN ISO 5378:1994(1999) Starches and derived products — Determination of nitrogen content by the Kjeldahl method — Spectrometric method
DIN EN ISO 8968-1:2002 Milk — Determination of nitrogen content — Part 1: Kjeldahl method (ISO 8968-1:2001)
BS EN ISO 5983-1:2005(2009) Animal feeding stuffs — Determination of nitrogen content and calculation of crude protein content — Part 1 : Kjeldahl method

BG-BDS, Kjeldahl method for plant total nitrogen

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

Inner Mongolia Provincial Standard of the People's Republic of China, Kjeldahl method for plant total nitrogen

DB15/T 1236-2017 Determination of volatile basic nitrogen in feedstuffs of animal origin by automatic Kjeldahl method

国家市场监督管理总局、中国国家标准化管理委员会, Kjeldahl method for plant total nitrogen

GB/T 6432-2018 Determination of crude protein in feeds—Kjeldahl method

AT-ON, Kjeldahl method for plant total nitrogen

ONORM L 1082-1999 Chemical analyses of soils - Determination of nitrogen according to Kjeldahl
ONORM EN 25663-1993 Water quality. Determination of Kjeldahl nitrogen. Method after mineralization with selenium (ISO 5663:1984)

GOSTR, Kjeldahl method for plant total nitrogen

GOST 34454-2018 Dairy products. Determination of protein content by the Kjeldahl method
GOST 34536-2019 Milk and milk products. Determination of mass fraction of whey proteins by Kjeldahl method

ES-UNE, Kjeldahl method for plant total nitrogen

UNE-EN ISO 5983-1:2007/AC:2009 Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Part 1: Kjeldahl method (ISO 5983-1:2005/Cor 1:2008)
UNE-EN 16169:2012 Sludge, treated biowaste and soil - Determination of Kjeldahl nitrogen (Endorsed by AENOR in October of 2012.)

NL-NEN, Kjeldahl method for plant total nitrogen

NEN 6482-1982 Water - Determination of the sum of ammoniacal and organically bound nitrogen according to Kjeldahl after mineralization with selenium
NEN 6481-1983 Water - Determination of the sum of ammoniacal and organically bound nitrogen according to Kjeldahl after mineralization with selenium
NEN 6646-1990 Water - Photometric determination of the content of ammonium nitrogen and of the sum of the contents of ammoniacal and organically bound nitrogen according to Kjeldahl by continuous flow analysis
NEN-ISO 5663:1993 Water quality. Determination of kjeldahl nitrogen. Method after mineralizaton with selenium (ISO 5663:1984)
NEN 3760-1984 Cheese - Determination of the nitrogen content according to Kjeldahl - Calculation of the crude protein content
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 3198-1984 Milk, evaporated milk and dried milk - Determination of the nitrogen content according to Kjeldahl - Calculation of the crude protein content (reference method)

TH-TISI, Kjeldahl method for plant total nitrogen

TIS 2255.1-2005 Animal feeding stuff s-determination of nitrogen content and calculation of crude protein content.part 1: kjeldahl method

European Committee for Standardization (CEN), Kjeldahl method for plant total nitrogen

CEN EN 13654-1-2001 Soil Improvers and Growing Media - Determination of Nitrogen - Part 1: Modified Kjeldahl Method
EN 25663:1993 Water quality; determination of Kjeldahl nitrogen; method after mineralization with selenium (ISO 5663:1984)

RO-ASRO, Kjeldahl method for plant total nitrogen

STAS SR ISO 3188:1995 Starches and derived products - Determination of nitrogen content by the Kjeldahl method-Titrimetric method
STAS SR 13348-1-1996 Tea. Analysis methods. Determination of proteic nitrogen by the Kjeldahl method. Spectrophotometric method
STAS SR 9763-13-1996 Spices and condiments. Determination of nitrogen content by the Kjeldahl method. Spectrophotometric method

YU-JUS, Kjeldahl method for plant total nitrogen

JUS B.H8.320-1988 Methods of analysis of coal and coke. Determination of nitrogen ccmtent - Makro Kjeldahl nethod

IT-UNI, Kjeldahl method for plant total nitrogen

UNI 2739-1945

Professional Standard - Urban Construction, Kjeldahl method for plant total nitrogen

CJ/T 3018.7-1993 Leachate.Determination of Kjeldahl nitrogen.Method after mineralization with mercuric sulfate catalyst

CU-NC, Kjeldahl method for plant total nitrogen

NC 26-124-1985 Drugs, Deterrnination of Nitrogen by Kjejdah!. Testing Method

Professional Standard - Geology, Kjeldahl method for plant total nitrogen

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

中华人民共和国国家质量监督检验检疫总局、中国国家标准化管理委员会, Kjeldahl method for plant total nitrogen

GB/T 33317-2016 Plastics—Phenolic resins—Determination of hexamethylenetetramine content—Kjeldahl method,perchloric acid method and hydrochloric acid method

Hunan Provincial Standard of the People's Republic of China, Kjeldahl method for plant total nitrogen

DB43/T 2139-2021 Determination of Nitrogen and Phosphorus in Plants by Continuous Flow Analysis