The principle of micro Kjeldahl method

The principle of micro Kjeldahl method, Total:88 items.

The international standard classification for "The principle of micro Kjeldahl method" includes: .

The Chinese standard classification for "The principle of micro Kjeldahl method" includes: Photographic-grade chemicals , Analysis methods for environmental quality of soils , Analysis methods for toxic substances in water .

Jilin Provincial Standard of the People's Republic of China

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

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

Professional Standard - Environmental Protection

HJ 717-2014 Soil quality - Determination of total nitrogen - Modified Kjeldahl method

Group Standards of the People's Republic of China

T/QAS 071-2021 Determination of total nitrogen in brine Kjeldahl method
T/NAIA 044-2021 Urine Total Nitrogen Determination in Livestock Kjeldahl Method

Ningxia Provincial Standard of the People's Republic of China

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

未注明发布机构

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 ISO 8968-1:2002 Milk — Determination of nitrogen content — Part 1: Kjeldahl method (ISO 8968-1:2001)

中华人民共和国环境保护部

GB 11891-1989 Water quility-Determination of Kjeldahl nitrogen

Korean Agency for Technology and Standards (KATS)

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 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 M ISO 6851-2002(2017) Photography－Processing waste－Determination of total amino nitrogen－Microdiffusion Kjeldahl method
KS M ISO 6851-2022 Photography－Processing waste－Determination of total amino nitrogen－Microdiffusion Kjeldahl method
KS H ISO 5378-2023 Starches and derived products－Determination of nitrogen content by the Kjeldahl method－Spectrophotometric method
KS H ISO 5378-2008(2018) Starches and derived products－Determination of nitrogen content by the Kjeldahl method－Spectrophotometric method

ZA-SANS

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

AENOR

UNE 32013:1995 COAL. DETERMINATION OF NITROGEN. SEMI-MICRO KJELDAHL METHOD.
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-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)

VN-TCVN

TCVN 6014-2007 Hard coal.Determination of nitrogen.Semi-micro Kjeldahl method
TCVN 6498-1999 Soil quality.Determination of total nitrogen.Modifierd Kejldahl method

PT-IPQ

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

Danish Standards Foundation

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/EN ISO 3188:1995 Starches and derived products - Determination of nitrogen content by the Kjeldahl method - Titrimetric method

German Institute for Standardization

DIN 51722-1:1990-07 Testing of solid fuels; determination of nitrogen content; semi-micro 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

American Society for Testing and Materials (ASTM)

ASTM E147-61(2017) Standard Specification for Apparatus for Microdetermination of Nitrogen by Kjeldahl Method

British Standards Institution (BSI)

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 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
BS 7755-3.7:1995 Soil quality. Chemical methods. Determination of total nitrogen. Modified Kjeldahl method

SCC

BS EN ISO 8968-1:2002 Milk. Determination of nitrogen content-Kjeldahl method
BS 1428-B1:1953 Microchemical analysis. Apparatus for the determination of elements by other than combustion methods. Specification for nitrogen determination apparatus (micro-Kjeldahl)
BS 1428-B1:1964 Microchemical analysis. Apparatus for the determination of elements by other than combustion methods-Specification for nitrogen determination apparatus (micro-Kjeldahl)
NS-EN 12135:1997 Fruit and vegetable juices - Determination of nitrogen content - Kjeldahl method
BS 1428-B3:1964 Microchemical apparatus. Apparatus for the determination of elements by other than combustion methods.-Specification for nitrogen determination apparatus (non-transference micro-Kjeldahl)
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 ISO 3188:1994 Starches and derived products - Determination of nitrogen content by the Kjeldahl method - Titrimetric 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

Association Francaise de Normalisation

NF V04-211:1971 MILK. DETERMINATION OF TOTAL NITROGEN CONTENT. (KJELDAHL METHOD).
NF ISO 11261:1995 Soil quality - Total nitrogen dosage - Modified 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 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

RU-GOST R

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

IN-BIS

IS 5194-1969 Determination method of nitrogen-Kjeldahl method

SE-SIS

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

GSO

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 6851:2015 Photography -- Processing waste -- Determination of total amino nitrogen (microdiffusion 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

Indonesia Standards

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

International Organization for Standardization (ISO)

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

CZ-CSN

CSN 56 0020-1987 General directions for the determination f nitrogen by the Kjeldahl method

Lithuanian Standards Office

LST EN 12135-2001 Fruit and vegetable juices - Determination of nitrogen content - Kjeldahl method

International Dairy Federation (IDF)

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

KR-KS

KS H ISO 3188-2008(2023) Starches and derived products－Determination of nitrogen content by the Kjeldahl method－Titrimetric method
KS H ISO 1871-2013(2023) Agricultural food products ― General directions for the determination of nitrogen by the Kjeldahl 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）

AS ISO 8968.1:2021 Milk and milk products — Determination of nitrogen content, Part 1: Kjeldahl principle and crude protein calculation

GOSTR

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

GOST

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

Association of Official Analytical Chemists (AOAC)

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

PL-PKN

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

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