organic matter and total nitrogen

organic matter and total nitrogen, Total:97 items.

The international standard classification for "organic matter and total nitrogen" includes: Fertilizers , Workplace atmospheres .

The Chinese standard classification for "organic matter and total nitrogen" includes: Basic standards and general methods on chemical fertilizers , Petroleum geology exploration , Labor sanitation .

Hebei Provincial Standard of the People's Republic of China

DB13/T 1224-2010 Determination method of total nitrogen in organic chemical products

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

GB/T 19143-2017 Analytical method of element for carbon,hydrogen,oxygen and nitrogen in rock organics
GB/T 17767.1-1999 Determination of total nitrogen content for organic-inorganic compound fertilizers
GB/T 17767.1-2008 Determination of organic-inorganic compound fertilizers - Part 1: Total nitrogen content

Jiangsu Provincial Standard of the People's Republic of China

DB32/T 4541-2023 Sea water quality evaluation guide for total nitrogen and total phosphorus

National Metrological Verification Regulations of the People's Republic of China

JJG 1094-2013 Water Quality On-line Analyzers of Total Phosphorus and Total Nitrogen

Tianjin Provincial Standard of the People's Republic of China

DB12/T 1023-2020 Determination of total nitrogen content in organic fertilizers Dumas combustion method

Occupational Health Standard of the People's Republic of China

GBZ/T 160.78-2004 Methods for determination of organic nitrogen pesticides in the air of workplace

Professional Standard - Agriculture

SL/T 788.1-2019 Part 1: Determination of total nitrogen in water quality

Heilongjiang Provincial Standard of the People's Republic of China

DB23/T 3310-2022 Water quality total nitrogen monitoring technical specification

Group Standards of the People's Republic of China

T/NJSS 006-2024 Organic inorganic slow release nitrogen fertilizer

European Committee for Standardization (CEN)

EN ISO 20236:2021 Water quality - Determination of total organic carbon (TOC), dissolved organic carbon (DOC), total bound nitrogen (TNb) and dissolved bound nitrogen (DNb) after high temperature catalytic oxidative combustion (ISO 20236:2018)
prEN ISO 20236 Water quality - Determination of total organic carbon (TOC), dissolved organic carbon (DOC), total bound nitrogen (TNb) and dissolved bound nitrogen (DNb) after high temperature catalytic oxidative combustion (ISO/DIS 20236:2023)
prEN ISO 20236:2021 Water quality - Determination of total organic carbon (TOC), dissolved organic carbon (DOC), total bound nitrogen (TNb) and dissolved bound nitrogen (DNb) after high temperature catalytic oxidative combustion (ISO 20236:2018)
EN ISO 20236:2024 Water quality - Determination of total organic carbon (TOC), dissolved organic carbon (DOC), total bound nitrogen (TNb) and dissolved bound nitrogen (DNb) after high temperature catalytic oxidative combustion (ISO 20236:2024)
FprCEN/TS 17771-2021 Organic and organo-mineral fertilizers - Determination of the nitrogen content
CEN/TS 17771:2022 Organic and organo-mineral fertilizers - Determination of the nitrogen content

International Organization for Standardization (ISO)

ISO 20236:2018 Water quality - Determination of total organic carbon (TOC), dissolved organic carbon (DOC), total bound nitrogen (TNb) and dissolved bound nitrogen (DNb) after high temperature catalytic oxidative combustion
ISO 20236:2024 Water quality — Determination of total organic carbon (TOC), dissolved organic carbon (DOC), total bound nitrogen (TNb) and dissolved bound nitrogen (DNb) after high temperature catalytic oxidative co
ISO 21793:2020 Water quality — Determination of total organic carbon (TOC), dissolved organic carbon (DOC), total bound nitrogen (TNb), dissolved bound nitrogen (DNb), total bound phosphorus (TPb) and dissolved boun
ISO/DIS 20236:2023 Water quality — Determination of total organic carbon (TOC), dissolved organic carbon (DOC), total bound nitrogen (TN b) and dissolved bound nitrogen (DN b) after high temperature catalytic oxidative combustion
ISO/CD 20236 Water quality — Determination of total organic carbon (TOC), dissolved organic carbon (DOC), total bound nitrogen (TN b) and dissolved bound nitrogen (DN b) after high temperature catalytic oxidative combustion
ISO 8245:1999 Water quality - Guidelines for the determination of total organic carbon (TOC) and dissolved organic carbon (DOC)
ISO 10695:2000 Water quality - Determination of selected organic nitrogen and phosphorus compounds - Gas-chromatographic methods
ISO 11261:1995 Soil quality - Determination of total nitrogen - Modified Kjeldahl method

British Standards Institution (BSI)

BS EN ISO 20236:2021 Water quality. Determination of total organic carbon (TOC), dissolved organic carbon (DOC), total bound nitrogen (TN _b ) and dissolved bound nitrogen (DN _b ) after high temperature catalytic oxidative combustion
BS EN ISO 20236:2021(2022) Water quality — Determination of total organic carbon (TOC), dissolved organic carbon (DOC), total bound nitrogen (TNb) and dissolved bound nitrogen (DNb) after high temperature catalytic oxidative combustion
BS EN ISO 20236:2024 Water quality. Determination of total organic carbon (TOC), dissolved organic carbon (DOC), total bound nitrogen (TNb) and dissolved bound nitrogen (DNb) after high temperature catalytic oxidative combustion
23/30464382 DC BS EN ISO 20236. Water quality. Determination of total organic carbon (TOC), dissolved organic carbon (DOC), total bound nitrogen (TN b) and dissolved bound nitrogen (DN b) after high temperature catalytic oxidative combustion
BS ISO 20236:2018 Water quality. Determination of total organic carbon (TOC), dissolved organic carbon (DOC), total bound nitrogen (TN<sub>b</sub>) and dissolved bound nitrogen (DN<sub>b</sub>) after high temperature catalytic oxidative combustion
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
PD CEN/TS 17771:2022 Organic and organo-mineral fertilizers. Determination of the nitrogen content
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

Spanish Association for Standardization (UNE)

UNE-EN ISO 20236:2022 Water quality - Determination of total organic carbon (TOC), dissolved organic carbon (DOC), total bound nitrogen (TNb) and dissolved bound nitrogen (DNb) after high temperature catalytic oxidative combustion (ISO 20236:2018)
AENOR UNE-EN ISO 20236:2025 Water quality. Determination of total organic carbon (TOC), dissolved organic carbon (DOC), total bound nitrogen (TNb), and dissolved bound nitrogen (DNb) after catalytic oxidative combustion at high temperature. (ISO 20236:2024)
UNE-CEN/TS 17771:2022 Organic and organo-mineral fertilizers - Determination of the nitrogen content (Endorsed by Asociación Española de Normalización in May of 2022.)
UNE 77318:2001 Soil quality. Determination of total nitrogen. Modified Kjeldahl method.

Association Francaise de Normalisation

NF EN ISO 20236:2021 Water quality - Determination of total organic carbon (TOC), dissolved organic carbon (COD), total bound nitrogen (TNb) and dissolved bound nitrogen (DNb) after catalytic oxidative combustion at high temperature
NF T90-236*NF EN ISO 20236:2021 Water quality - Determination of total organic carbon (TOC), dissolved organic carbon (DOC), total bound nitrogen (TNb) and dissolved bound nitrogen (DNb) after high temperature catalytic oxidative combustion
NF EN ISO 20236:2024 Water quality - Determination of total organic carbon (TOC), dissolved organic carbon (DOC), total bound nitrogen (TNb) and dissolved bound nitrogen (DNb) after high temperature catalytic oxidative combustion
NF U44-160:1985 Organic soil conditioners and organic material for soil improvement. Determination of total organic matter. Calcination method.
XP CEN/TS 17771:2022 Organic and organo-mineral fertilizers - Determination of nitrogen content
XP U42-730*XP CEN/TS 17771:2022 Organic and organo-mineral fertilizers - Determination of the nitrogen content
NF U42-503*NF EN 15750:2010 Fertilizers - Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods

Danish Standards Foundation

DANSK DS/ISO 20236:2018 Water quality – Determination of total organic carbon (TOC), dissolved organic carbon (DOC), total bound nitrogen (TNb) and dissolved bound nitrogen (DNb) after high temperature catalytic oxidative combustion
DANSK DS/EN ISO 20236:2021 Water quality – Determination of total organic carbon (TOC), dissolved organic carbon (DOC), total bound nitrogen (TNb) and dissolved bound nitrogen (DNb) after high temperature catalytic oxidative combustion (ISO 20236:2018)
DANSK DS/ISO 21793:2020 Water quality – Determination of total organic carbon (TOC), dissolved organic carbon (DOC), total bound nitrogen (TNb), dissolved bound nitrogen (DNb), total bound phosphorus (TPb) and dissolved bound phosphorus (DPb) after wet chemical catalysed ozon...
DS 223:1991 Water analysis. Determination of the sum of nitrite- and nitrate-nitrogen

German Institute for Standardization

DIN EN ISO 20236:2021-09 Draft Document - Water quality - Determination of total organic carbon (TOC), dissolved organic carbon (DOC), total bound nitrogen (TN<(Index)b>) and dissolved bound nitrogen (DN<(Index)b>) after high temperature catalytic oxidative combustion (ISO 202...
DIN EN ISO 20236:2023 Water quality - Determination of total organic carbon (TOC), dissolved organic carbon (DOC), total bound nitrogen (TN) and dissolved bound nitrogen (DN) after high temperature catalytic oxidative combustion (ISO 20236:2018)
DIN EN ISO 20236 E:2023-10 Draft Document - Water quality - Determination of total organic carbon (TOC), dissolved organic carbon (DOC), total bound nitrogen (TN<(Index)b>) and dissolved bound nitrogen (DN<(Index)b>) after high temperature catalytic oxidative combustion (ISO/DIS...
DIN EN ISO 20236:2025-05 Water quality - Determination of total organic carbon (TOC), dissolved organic carbon (DOC), total bound nitrogen (TNb) and dissolved bound nitrogen (DNb) after high temperature catalytic oxidative combustion (ISO 20236:2024)
DIN EN ISO 20236:2023-10 Water quality - Determination of total organic carbon (TOC), dissolved organic carbon (DOC), total bound nitrogen (TN<(Index)b>) and dissolved bound nitrogen (DN<(Index)b>) after high temperature catalytic oxidative combustion (ISO/DIS 2023...
DIN EN ISO 20236 E:2023 Draft Document - Water quality - Determination of total organic carbon (TOC), dissolved organic carbon (DOC), total bound nitrogen (TN<(Index)b>) and dissolved bound nitrogen (DN<(Index)b>) after high temperature catalytic oxidative combust...
DIN EN ISO 20236:2023-04 Water quality - Determination of total organic carbon (TOC), dissolved organic carbon (DOC), total bound nitrogen (TN<(Index)b>) and dissolved bound nitrogen (DN<(Index)b>) after high temperature catalytic oxidative combustion (ISO 20236:20...
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
DIN CEN/TS 17771:2022-07 Organic and organo-mineral fertilizers - Determination of the nitrogen content; German version CEN/TS 17771:2022
DIN CEN/TS 17771:2022 Organic and organo-mineral fertilizers - Determination of the nitrogen content

Gosstandart of Russia

GOST 26715-1985 Organic fertilizers. Methods for determination of total nitrogen
GOST ISO 10695-2023 Water quality. Determination of individual nitrogen and phosphorus organic compounds. Gas chromatographic methods
GOST 17444-2016 Reagents. Methods for determination of main substance of nitrogen containing organic compounds and salts of organic acids

Ente Nazionale Italiano di Unificazione

UNI EN ISO 20236:2022 Water quality - Determination of total organic carbon (TOC), dissolved organic carbon (DOC), total bound nitrogen (TNb) and dissolved bound nitrogen (DNb) after high temperature catalytic oxidative combustion
UNI 9249:1988 Biomass. Determination of total nitrogen.
UNI CEN/TS 17771:2022 Organic and organo-mineral fertilizers - Determination of the nitrogen content

Austrian Standards

OENORM EN ISO 20236:2021 Water quality - Determination of total organic carbon (TOC), dissolved organic carbon (DOC), total bound nitrogen (TNb) and dissolved bound nitrogen (DNb) after high temperature catalytic oxidative combustion (ISO 20236:2018)
ONORM M 6284-1988 Water quality; determination of total organic carbon (TOC)

Standards Norway

NS-EN ISO 20236:2021 Water quality – Determination of total organic carbon (TOC), dissolved organic carbon (DOC), total bound nitrogen (TNb) and dissolved bound nitrogen (DNb) after high temperature catalytic oxidative combustion (ISO 20236:2018)
NS 4745-1991 Water analysis - Determination of the sum of nitrite nitrogen and nitrate nitrogen
NS-ISO 8245:1987 Water quality — Guidelines for the determination of total organic carbon (TOC)

GCC Standardization Organization

GSO ISO 21793:2024 Water quality — Determination of total organic carbon (TOC), dissolved organic carbon (DOC), total bound nitrogen (TNb), dissolved bound nitrogen (DNb), total bound phosphorus (TPb) and dissolved bound phosphorus (DPb) after wet chemical catalysed ozon...
OS GSO ISO 21793:2024 Water quality — Determination of total organic carbon (TOC), dissolved organic carbon (DOC), total bound nitrogen (TNb), dissolved bound nitrogen (DNb), total bound phosphorus (TPb) and dissolved bound phosphorus (DPb) after wet chemical catalysed ozon...

Kingdom of Bahrain Testing and Metrology Directorate

BH GSO ISO 21793:2024 Water quality — Determination of total organic carbon (TOC), dissolved organic carbon (DOC), total bound nitrogen (TNb), dissolved bound nitrogen (DNb), total bound phosphorus (TPb) and dissolved bound phosphorus (DPb) after wet chemical catalysed ozon...

Japanese Industrial Standards Committee (JISC)

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

Czech Standards Institute (UNMZ)

CSN 83 0540 Cast.13-1984 Chemical and physical analysis of waste water Determination of organic and total nitrogen

Magyar Szabványügyi Testület

MNOSZ 260-12.lap-1955 Experiments to detect sewage nitrogen and organic nitrogen

Polski Komitet Normalizacyjny (PKN)

PN C04576 ArkusZ11-1973 Water and waste water Tests for nitrogen Determination of organie nitrogen

Korean Agency for Technology and Standards (KATS)

KS I ISO 8245:2022 Water quality — Guidelines for the determination of total organic carbon(TOC) and dissolved organic carbon(DOC)
KS I ISO 8245-2010(2015) Water quality－Guidelines for the determination of total orgaic carbon(TOC) and dissolved organic carbon(DOC)
KS I ISO 8245-2022 Water quality — Guidelines for the determination of total organic carbon(TOC) and dissolved organic carbon(DOC)
KS I ISO 8245:2010 Water quality－Guidelines for the determination of total orgaic carbon(TOC) and dissolved organic carbon(DOC)
KS I ISO 11261-2008(2021) Soil quality－Determination of total nitrogen－Modified Kjeldahl method
KS I ISO 11261-2008(2018) Soil quality－Determination of total nitrogen－Modified Kjeldahl method
KS I ISO 11261:2008 Soil quality-Determination of total nitrogen-Modified Kjeldahl method

The Directorate General of Specifications and Metrology (DGSM)

OS GSO ISO 8245:2013 Water quality - Guidelines for the determination of total organic carbon (TOC) and dissolved organic carbon (DOC)
OS GSO ISO 10695:2015 Water quality -- Determination of selected organic nitrogen and phosphorus compounds -- Gas chromatographic methods

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

TCVN 6498-1999 Soil quality.Determination of total nitrogen.Modifierd Kejldahl method
TCVN 6634-2000 Water quality.Guidelines for the determination of total organic carbon (TOC) and dissolved organic carbon (DOC)
TCVN 4050-1985 Soil.Method for the determination of total organic matter

Netherlands Institute for Standardization

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

National Standardisation Body (ASRO)

STAS SR ISO 8245:1995 Water qualtty - Guidelines for the determination of total organic carbon (TOC)

Bureau of Indian Standards

IS 3025-73-2021 METHODS OF SAMPLING AND TEST PHYSICAL AND CHEMICAL FOR WATER AND WASTEWATER Part 73 Instrument based method for determination of total organic carbon TOC dissolved organic carbon DOC total bound nitrogen TNb and dissolved bound nitrogen DNb

Swedish Institute for Standards

SS-ISO 11261:1996 Soil quality - Determination of total nitrogen - Modified Kjeldahl method

Belgian Standards Institute

NBN T 91-255-1976 Water analysis methods - Determination of the ammoniacal and organic nitrogen - (Kjeldahl nitrogen)

American Society for Testing and Materials (ASTM)

ASTM E258-67(2002) Standard Test Method for Total Nitrogen in Organic Materials by Modified Kjeldahl Method

Lithuanian Standards Office

LST ISO 8245:2003 Water quality. Guidelines for the determination of total organic carbon (TOC) and dissolved organic carbon (DOC) (idt ISO 8245:1999)