The principle behind the Kjeldahl method

The principle behind the Kjeldahl method, Total:157 items.

In the international standard classification, The principle behind the Kjeldahl method involves: Coals, Water quality, Milk and milk products, Soil quality. Pedology, Animal feeding stuffs, General methods of tests and analysis for food products, Fruits. Vegetables, External water conveyance systems, Beverages, Construction materials, Sugar. Sugar products. Starch, Wastes, Analytical chemistry, Cereals, pulses and derived products, Photography.

Danish Standards Foundation, The principle behind the Kjeldahl method

DS 242:1988 Water quality. Kjeldahl-nitrogen. Kjeldahl-method
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/ISO 5663:1994 Water quality - Determination of Kjeldahl nitrogen - Method after mineralization with selenium
DS/EN 25663:1994 Water quality-Determination of Kjeldahl nitrogen-Method after mineralization with selenium
DS/EN 13342:2001 Characterisation of sludges - Determination of total Kjeldahl nitrogen
DS/EN ISO 3188:1995 Starches and derived products - Determination of nitrogen content by the Kjeldahl method - Titrimetric method
DS/EN 16169:2012 Sludge, treated biowaste and soil - Determination of Kjeldahl nitrogen
DS/ISO 1871:2009 Food and feed products - General guidelines for the determination of nitrogen by the Kjeldahl method
DS/EN ISO 20483:2007 Cereals and pulses - Determination of the nitrogen content and calculation of the crude protein content - Kjeldahl method

IN-BIS, The principle behind the Kjeldahl method

IS 5194-1969 Determination method of nitrogen-Kjeldahl method

International Organization for Standardization (ISO), The principle behind the Kjeldahl method

ISO 332:1974 Title missing - Legacy paper document
ISO 332:1981 Coal — Determination of nitrogen — Macro Kjeldahl method
ISO 8968-1:2001 | IDF 20-1: 2001 Milk — Determination of nitrogen content — Part 1: Kjeldahl method
ISO 8968-1:2014 | IDF 20-1:2014 Milk and milk products — Determination of nitrogen content — Part 1: Kjeldahl principle and crude protein calculation
ISO 5663:1984 Water quality; Determination of Kjeldahl nitrogen; Method after mineralization with selenium
ISO 8968-1:2014 Milk and milk products - Determination of nitrogen content - Part 1: Kjeldahl principle and crude protein calculation
ISO 1871:2009 Food and feed products - General guidelines for the determination of nitrogen by the Kjeldahl method

Group Standards of the People's Republic of China, The principle behind the Kjeldahl method

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

SE-SIS, The principle behind the Kjeldahl method

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

Association Francaise de Normalisation, The principle behind the Kjeldahl method

NF V04-211:1971 MILK. DETERMINATION OF TOTAL NITROGEN CONTENT. (KJELDAHL METHOD).
NF EN ISO 3188:1994 Starches and derived products - Determination of nitrogen according to the Kjeldahl method - Titrimetric method
NF ISO 1871:2009 Food and feed products - General guidelines for the determination of nitrogen using the Kjeldahl method
NF V04-221-1*NF EN ISO 8968-1:2014 Milk and milk products - Determination of nitrogen content - Part 1 : Kjeldahl principle and crude protein calculation
NF EN 12135:1997 Fruit and vegetable juices - Nitrogen dosage - Kjeldahl method
NF EN 13342:2000 Characterization of sludge - Determination of Kjeldahl nitrogen
NF EN ISO 5378:1994 Starches and derived products - Determination of nitrogen according to the Kjeldahl method - Spectrophotometric method
NF ISO 11261:1995 Soil quality - Total nitrogen dosage - Modified Kjeldahl method
NF X31-111*NF ISO 11261:1995 Soil quality. Determination of total nitrogen. Modified kjeldahl method.
NF EN 25663:1994 Water quality - Kjeldahl nitrogen dosage - Method after selenium mineralization
NF EN 16169:2012 Sludge, treated biowaste and soil - Determination of Kjeldahl nitrogen

SCC, The principle behind the Kjeldahl method

BS EN ISO 8968-1:2002 Milk. Determination of nitrogen content-Kjeldahl method
NS-EN 12135:1997 Fruit and vegetable juices - Determination of nitrogen content - Kjeldahl method
DANSK DS/EN 12135:1997 Fruit and vegetable juices - Determination of nitrogen content - Kjeldahl method
DANSK DS/EN ISO 8968-1:2014 Milk and milk products - Determination of nitrogen content - Part 1: Kjeldahl principle and crude protein calculation
DANSK DS/EN 25663:1994 Water quality - Determination of Kjeldahl nitrogen - Method after mineralization with selenium
DANSK DS/ISO 5663:1994 Water quality - Determination of Kjeldahl nitrogen - Method after mineralization with selenium
AENOR UNE-EN 13342:2001 Characterization of sludges - Determination of Kjeldahl nitrogen
NS-EN 13342:2000 Characterization of sludges — Determination of Kjeldahl nitrogen
DANSK DS/ISO 1871:2009 Food and feed products - General guidelines for the determination of nitrogen by the Kjeldahl method
DANSK DS/EN ISO 3188:1994 Starches and derived products - Determination of nitrogen content by the Kjeldahl method - Titrimetric method
NS-EN 25663:1993 Water quality — Determination of Kjeldahl nitrogen — Method after mineralization with selenium (ISO 5663:1984)
NS-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)
NS-EN ISO 8968-1:2001 Milk — Determination of nitrogen content — Part 1: Kjeldahl method (ISO 8968-1:2001)
DANSK DS/EN 13342:2001 Characterisation of sludges - Determination of total Kjeldahl nitrogen
DANSK DS/EN 16169:2012 Sludge, treated biowaste and soil - Determination of Kjeldahl nitrogen
07/30142476 DC BS ISO 1871. Food products. General guidelines for the determination of nitrogen by Kjedahl method
NS-EN 16169:2012 Sludge, treated biowaste and soil — Determination of Kjeldahl nitrogen
NS-EN ISO 3188:1994 Starches and derived products — Determination of nitrogen content by the Kjeldahl method — Titrimetric method (ISO 3188:1978)
BS DD ISO/TS 17837:2008 Milk and milk products. Determination of nitrogen content and crude protein calculation. Kjeldahl method
AENOR UNE 53282:1975 Plastic materials. Determination of nitrogen content in resins and plastic materials by the Kjeldahl method.

Korean Agency for Technology and Standards (KATS), The principle behind the Kjeldahl method

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 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 I ISO 11261-2021 Soil quality－Determination of total nitrogen－Modified Kjeldahl method
KS H ISO 1871-2023 Agricultural food products ― General directions for the determination of nitrogen by the Kjeldahl method
KS I ISO 5663-2007(2017) Water quality－Determination of Kjeldahl nitrogen－Method after mineralization with selenuium
KS H ISO 3188-2023 Starches and derived products－Determination of nitrogen content by the Kjeldahl method－Titrimetric method
KS H ISO 3188-2008(2018) Starches and derived products－Determination of nitrogen content by the Kjeldahl method－Titrimetric method
KS I ISO 5663:2007 Water quality－Determination of Kjeldahl nitrogen－Method after mineralization with selenuium
KS H ISO 5378-2023 Starches and derived products－Determination of nitrogen content by the Kjeldahl method－Spectrophotometric method
KS M ISO 6851-2002(2017) Photography－Processing waste－Determination of total amino nitrogen－Microdiffusion Kjeldahl method
KS H ISO 5378-2008(2018) Starches and derived products－Determination of nitrogen content by the Kjeldahl method－Spectrophotometric method
KS M ISO 6851-2022 Photography－Processing waste－Determination of total amino nitrogen－Microdiffusion Kjeldahl method

AT-ON, The principle behind the Kjeldahl method

ONORM L 1082-1999 Chemical analyses of soils - Determination of nitrogen according to Kjeldahl

Ningxia Provincial Standard of the People's Republic of China, The principle behind the Kjeldahl method

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

中華人民共和國(guó)環(huán)境保護(hù)部, The principle behind the Kjeldahl method

GB 11891-1989 Water quality-Determination of Kjeldahl nitrogen

VN-TCVN, The principle behind the Kjeldahl method

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

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China, The principle behind the Kjeldahl method

GB/T 11891-1989 Water quality--Determination of Kjeldahl nitrogen
GB/T 41965-2022 Photography—Processing waste—Determination of total amino nitrogen(microdiffusion Kjeldahl method)

British Standards Institution (BSI), The principle behind the Kjeldahl method

BS ISO 6851:2001 Photography. Processing waste. Determination of total amino nitrogen (microdiffusion Kjeldahl method)
BS EN ISO 8968-1:2014 Milk and milk products. Determination of nitrogen content. Kjeldahl principle and crude protein calculation
BS 7755-3.7:1995 Soil quality. Chemical methods. Determination of total nitrogen. Modified Kjeldahl method
BS EN ISO 3188:1994(1999) Starches and derived products — Determination of nitrogen content by the Kjeldahl method — Titrimetric method
BS EN 25663:1993 Water quality. Determination of Kjeldahl nitrogen. Method after mineralization with selenium
BS EN ISO 5378:1994(1999) Starches and derived products — Determination of nitrogen content by the Kjeldahl method — Spectrometric method
DD ISO/TS 17837:2008 Milk and milk products. Determination of nitrogen content and crude protein calculation. Kjeldahl method

Association of Official Analytical Chemists (AOAC), The principle behind the Kjeldahl method

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

KR-KS, The principle behind the Kjeldahl method

KS H ISO 1871-2013(2023) Agricultural food products ― General directions for the determination of nitrogen by the Kjeldahl method
KS I ISO 5663-2023 Water quality — Determination of Kjeldahl nitrogen — Method after mineralization with selenium
KS H ISO 3188-2008(2023) Starches and derived products－Determination of nitrogen content by the Kjeldahl method－Titrimetric method
KS H ISO 5378-2008(2023) Starches and derived products－Determination of nitrogen content by the Kjeldahl method－Spectrophotometric method

Standard Association of Australia （SAA）, The principle behind the Kjeldahl method

AS 2300.1.2.1:1988 Methods of chemical and physical testing for the dairying industry, Method 1.2.1: General methods and principles - Determination of nitrogen - Reference Kjeldahl method
AS ISO 8968.1:2021 Milk and milk products — Determination of nitrogen content, Part 1: Kjeldahl principle and crude protein calculation
AS 1871.11:1976 List of methods for examination of waters Nitrogen (total Kjeldahl incl. ammoniacal)

RU-GOST R, The principle behind the Kjeldahl method

GOST 34111-2017 Juice products. Determination of 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 R 55246-2012 Milk and milk products. Determination of non-protein nitrogen content by Kjeldahl method

Spanish Association for Standardization (UNE), The principle behind the Kjeldahl method

UNE 77318:2001 Soil quality. Determination of total nitrogen. Modified Kjeldahl method.
UNE 32013:1995 COAL. DETERMINATION OF NITROGEN. SEMI-MICRO KJELDAHL METHOD.
UNE-EN 12135:1998 Fruit and vegetable juices - Determination of nitrogen content - Kjeldahl method
UNE-EN 13342:2001 Characterization of sludges - Determination of Kjeldahl nitrogen
UNE-EN ISO 8968-1:2014 Milk and milk products - Determination of nitrogen content - Part 1: Kjeldahl principle and crude protein calculation (ISO 8968-1:2014)
UNE-EN ISO 8968-1:2002 Milk - Determination of nitrogen content - Part 1: Kjeldahl method. (ISO 8968-1:2001)
UNE-EN 16169:2012 Sludge, treated biowaste and soil - Determination of Kjeldahl nitrogen (Endorsed by AENOR in October of 2012.)
UNE-EN 25663:1994 WATER QUALITY. DETERMINATION OF KJELDAHL NITROGEN. METHOD AFTER MINERALIZATION WITH SELENIUM. (ISO 5663:1984).
UNE-EN ISO 3188:1995 STARCHES AND DERIVED PRODUCTS. DETERMINATION OF NITROGEN CONTENT BY THE KJELDAHL METHOD. TITRIMETRIC METHOD. (ISO 3188:1978).

American Society for Testing and Materials (ASTM), The principle behind the Kjeldahl method

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

Jilin Provincial Standard of the People's Republic of China, The principle behind the Kjeldahl method

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

GSO, The principle behind the Kjeldahl method

OS GSO ISO 11261:2015 Soil quality -- Determination of total nitrogen -- Modified Kjeldahl method
GSO ISO 11261:2015 Soil quality -- Determination of total nitrogen -- Modified Kjeldahl method
BH GSO ISO 11261:2017 Soil quality -- Determination of total nitrogen -- Modified Kjeldahl method
GSO ISO 1871:2008 Agricultural food products — General directions for the determination of nitrogen by the Kjeldahl method
GSO ISO 5663:2015 Water quality -- Determination of Kjeldahl nitrogen -- Method after mineralization with selenium
BH GSO ISO 5663:2016 Water quality -- Determination of Kjeldahl nitrogen -- Method after mineralization with selenium
OS GSO ISO 1871:2008 Agricultural food products — General directions for the determination of nitrogen by the Kjeldahl method
OS GSO ISO 8968-1:2014 Milk and milk products -- Determination of nitrogen content -- Part 1: Kjeldahl principle and crude protein calculation
GSO ISO 3188:2015 Starches and derived products -- Determination of nitrogen content by the Kjeldahl method -- Titrimetric method
GSO ISO 6851:2015 Photography -- Processing waste -- Determination of total amino nitrogen (microdiffusion Kjeldahl method)
GSO ISO 5378:2015 Starches and derived products -- Determination of nitrogen content by the Kjeldahl method -- Spectrophotometric method

Indonesia Standards, The principle behind the Kjeldahl method

SNI 4146-2013 Method for determination of total nitrogen content in sediment by Kjeldahl titration method

Lithuanian Standards Office , The principle behind the Kjeldahl method

LST EN 12135-2001 Fruit and vegetable juices - Determination of nitrogen content - Kjeldahl method
LST EN 13342-2002 Characterization of sludges - Determination of Kjeldahl nitrogen
LST EN ISO 8968-1:2002 Milk - Determination of nitrogen content - Part 1: Kjeldahl method (ISO 8968-1:2001)
LST EN 16169-2012 Sludge, treated biowaste and soil - Determination of Kjeldahl nitrogen
LST EN 25663-2000 Water quality - Determination of Kjeldahl nitrogen - Method after mineralization with selenium (ISO 5663:1984)
LST EN ISO 3188:2000 Starches and derived products - Determination of nitrogen content by the Kjeldahl method - Titrimetric method (ISO 3188:1978)

International Dairy Federation (IDF), The principle behind the Kjeldahl method

IDF 20-1-2001 Milk - Determination of nitrogen content - Part 1: Kjeldahl method
IDF 20-1-2014 Milk and milk products - Determination of nitrogen content - Part 1: Kjeldahl principle and crude protein calculation

CZ-CSN, The principle behind the Kjeldahl method

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

Professional Standard - Environmental Protection, The principle behind the Kjeldahl method

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

BE-NBN, The principle behind the Kjeldahl method

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)

South African Bureau of Standard, The principle behind the Kjeldahl method

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

German Institute for Standardization, The principle behind the Kjeldahl method

DIN EN 12135:1997-12 Fruit and vegetable juices - Determination of nitrogen content - Kjeldahl method; German version EN 12135:1997
DIN EN ISO 8968-1:2014-06 Milk and milk products - Determination of nitrogen content - Part 1: Kjeldahl principle and crude protein calculation (ISO 8968-1:2014); German version EN ISO 8968-1:2014
DIN EN ISO 8968-1 E:2013-04 Determination of nitrogen content of milk and milk products Part 1: Principles of Kjeldahl method and calculation of crude protein (draft)
DIN EN 13342:2001-01 Characterization of sludges - Determination of Kjeldahl nitrogen; German version EN 13342:2000
DIN 51722-1:1990-07 Testing of solid fuels; determination of nitrogen content; semi-micro Kjeldahl method
DIN EN ISO 8968-1:2002 Milk — Determination of nitrogen content — Part 1: Kjeldahl method (ISO 8968-1:2001)
DIN EN 16169:2012-11 Sludge, treated biowaste and soil - Determination of Kjeldahl nitrogen; German version EN 16169:2012
DIN EN 25663:1993-11 Water quality; determination of Kjeldahl nitrogen; method after mineralization with selenium (ISO 5663:1984); German version EN 25663:1993

PL-PKN, The principle behind the Kjeldahl method

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

國(guó)家市場(chǎng)監(jiān)督管理總局、中國(guó)國(guó)家標(biāo)準(zhǔn)化管理委員會(huì), The principle behind the Kjeldahl method

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

GOSTR, The principle behind the Kjeldahl method

GOST 34454-2018 Dairy products. Determination of protein content by the Kjeldahl method

GOST, The principle behind the Kjeldahl method

GOST 2408.2-1975 Brown coals, hard coals, anthracite, combustible shales and turf. Method for thedetermination of nitrogen content
GOST 34789-2021 Brewing products. Identification. Determination of mass concentration of total nitrogen by Kjeldahl method

PT-IPQ, The principle behind the Kjeldahl method

NP 1986-1991 Milks Determination of protein content. Kjeldahl technique

European Committee for Standardization (CEN), The principle behind the Kjeldahl method

EN 13342:2000 Characterisation of sludges - Determination of Kjeldahl nitrogen
EN ISO 14891:2002 Milk and Milk Products - Determination of Nitrogen Content - Routine Method Using Combustion According to the Dumas Principle

CEN - European Committee for Standardization, The principle behind the Kjeldahl method

EN ISO 8968-1:2001 Milk - Determination of Nitrogen Content - Part 1: Kjeldahl Method

BG-BDS, The principle behind the Kjeldahl method

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

NL-NEN, The principle behind the Kjeldahl method

NEN 3760-1984 Cheese - Determination of the nitrogen content according to Kjeldahl - Calculation of the crude protein content

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