Method for determination of ammonia and nitrate nitrogen

Method for determination of ammonia and nitrate nitrogen, Total:196 items.

The international standard classification for "Method for determination of ammonia and nitrate nitrogen" includes: Spices and condiments. Food additives , Fertilizers , Soil quality. Pedology .

The Chinese standard classification for "Method for determination of ammonia and nitrate nitrogen" includes: Flavoring materials , Soil and fertilizer in general , Basic standards and general methods on chemical fertilizers .

Hubei Provincial Standard of the People's Republic of China

DB42/T 2120-2023 Determination of ammonia nitrogen, nitrite nitrogen and nitrate nitrogen in soil by gas phase molecular absorption spectrometry

Professional Standard - Environmental Protection

HJ 634-2012 Soil-Determination of ammonium,nitrite and nitrate by extraction with potassium chloride solution -spectrophotometric methods

Professional Standard - Business

SB/T 10318-1999 Analysis of ammoniacal nitrogen

Professional Standard - Agriculture

GB 3597-1983 Determination of nitrate nitrogen content in fertilizers Nitrogen reagent gravimetric method
ZB X 66038-1987 Amino nitrogen determination method
JAP-031 Azaphenanthridine detection method
NY/T 1116-2014 Fertilizer - Determination for content of nitrate nitrogen, ammonium nitrogen and amidonitrogen

Group Standards of the People's Republic of China

T/CIMA 0041-2021 Ammonia Nitrogen Rapid Tester
T/CPCIF 0168-2021 Rapid detection kits for nitrite，nitrate and ammonia nitrogen in water
T/NAIA 001-2020 Determination of ammoniacal nitrogen in fermented feed Kjeldahl method

Military Standard of the People's Republic of China-General Armament Department

GJB 337-1987 Determination method of nitrogen content of nitrocellulose (interferometer method)
GJB 337-1987(XG1-2015) Modification sheet 1-2015 for determination method of nitrogen content of nitrocellulose
GJB 770.303-1989 Test methods for gunpowder analysis: Determination of nitrogen content of nitrocellulose. Five-tube nitrogen meter method

Tianjin Provincial Standard of the People's Republic of China

DB12/T 512-2014 Determination method of nitrate nitrogen in soil samples

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

GB/T 42487-2023 Soil quality—Determination of nitrate, nitrite and ammonium in soils—Extraction with potassium chloride solution and determination using automated method with segmented flow analysis
GB/T 42485-2023 Soil quality—Determination of nitrate, nitrite and ammonium in soils—Extraction with potassium chloride solution and determination with manual method
GB/T 3597-2002 Fertilizer - Determination of nitrate nitrogen content - Nitron gravimetric method

Yunnan Provincial Standard of the People's Republic of China

DB53/T 624-2014 Determination of Nitrate Nitrogen and Nitrite Nitrogen in Coking Wastewater by Dairyler's Alloy Reduction-Neutralization Titration

SCC

SN-CEN/TS 15559:2007 Fertilizers — Determination of nitric and ammoniacal nitrogen according to Arnd
AENOR UNE-EN 15558:2009 Fertilizers - Determination of nitric and ammoniacal nitrogen according to Ulsch
UNE-CEN/TS 15558:2007 EX Fertilizers - Determination of nitric and ammoniacal nitrogen according to Ulsch
DANSK DS/EN 15558:2009 Fertilizers - Determination of nitric and ammoniacal nitrogen according to Ulsch
NS-EN 15558:2009 Fertilizers — Determination of nitric and ammoniacal nitrogen according to Ulsch
SN-CEN/TS 15558:2007 Fertilizers — Determination of nitric and ammoniacal nitrogen according to Ulsch
NS-EN 15476:2009 Fertilizers — Determination of nitric and ammoniacal nitrogen according to Devarda
UNE-CEN/TS 15476:2007 EX Fertilizers - Determination of nitric and ammoniacal nitrogen according to Devarda
AENOR UNE-EN 15476:2009 Fertilizers - Determination of nitric and ammoniacal nitrogen according to Devarda
DANSK DS/EN 15559:2009 Fertilizers - Determination of nitric and ammoniacal nitrogen according to Arnd
UNE-CEN/TS 15559:2007 EX Fertilizers - Determination of nitric and ammoniacal nitrogen according to Arnd
SN-CEN/TS 15476:2006 Fertilizers — Determination of nitric and ammoniacal nitrogen according to Devarda
BS DD CEN/TS 15750:2006 Fertilizers. Determination of different forms of nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods
DANSK DS/EN 15476:2009 Fertilizers - Determination of nitric and ammoniacal nitrogen according to Devarda
NS-EN 15559:2009 Fertilizers — Determination of nitric and ammoniacal nitrogen according to Arnd
08/30179316 DC BS EN 15558. Fertilizers. Determination of nitric and ammoniacal nitrogen according to Ulsch
08/30179304 DC BS EN 15476. Fertilizers. Determination of nitric and ammoniacal nitrogen according to Devarda
08/30179319 DC BS EN 15559. Fertilizers. Determination of nitric and ammoniacal nitrogen according to Arnd
UNE-CEN/TS 15604:2008 EX Fertilizers - Determination of different forms of nitrogen in the same sample, containing nitrogen as nitric, ammoniacal, urea and cyanamide nitrogen
DANSK DS/ISO 15604:2020 Fertilizers – Determination of different forms of nitrogen in the same sample, containing nitrogen as nitric, ammoniacal, urea and cyanamide nitrogen
DANSK DS/EN 15604:2009 Fertilizers - Determination of different forms of nitrogen in the same sample, containing nitrogen as nitric, ammoniacal, urea and cyanamide nitrogen
SN-CEN/TS 15604:2007 Fertilizers — Determination of different forms of nitrogen in the same sample, containing nitrogen as nitric, ammoniacal, urea and cyanamide nitrogen
NS-EN 15604:2009 Fertilizers — Determination of different forms of nitrogen in the same sample, containing nitrogen as nitric, ammoniacal, urea and cyanamide nitrogen
08/30179332 DC BS EN 15604. Fertilizers. Determination of different forms of nitrogen in the same sample, containing nitrogen as nitric, ammoniacal, urea and cyanamide nitrogen
SN-CEN/TS 15750:2008 Fertilizers — Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods
NS-EN 15750:2009 Fertilizers — Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods
DANSK DS/EN 15750:2009 Fertilizers - Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods
AS 1871.11:1976 List of methods for examination of waters Nitrogen (total Kjeldahl incl. ammoniacal)
BS DD CEN/TS 15750:2008 Fertilizers. Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods
AENOR UNE-EN 15750:2010 Fertilizers - Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods
DIN EN ISO 15604 E:2019 Draft Document - Fertilizers - Determination of different forms of nitrogen in the same sample, containing nitrogen as nitric, ammoniacal, urea and cyanamide nitrogen (ISO 15604:2016); German and English version prEN ISO 15604:2019
DIN EN 15750 E:2009 Draft Document - Fertilizers - Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods; German version prEN 15750:2009
NS-EN 15560:2023 Inorganic fertilizers - Determination of total nitrogen in calcium cyanamide nitrate free
NS 4745:1991 Water analysis - Determination of the sum of nitrite nitrogen and nitrate nitrogen
UNE-CEN/TS 15561:2007 EX Fertilizers - Determination of total nitrogen in calcium cyanamide containing nitrates
AENOR UNE-EN 15561:2009 Fertilizers - Determination of total nitrogen in calcium cyanamide containing nitrates
DANSK DS/EN 15561:2009 Fertilizers – Determination of total nitrogen in calcium cyanamide containing nitrates
SN-CEN/TS 15561:2007 Fertilizers — Determination of total nitrogen in calcium cyanamide containing nitrates
08/30179322 DC BS EN 15560. Fertilizers. Determination of total nitrogen in calcium cyanamide nitrate free
DANSK DS/EN 15475:2009 Fertilizers - Determination of ammoniacal nitrogen
NS-EN 15561:2009 Fertilizers - Determination of total nitrogen in calcium cyanamide containing nitrates
DIN EN 15560 E:2021 Draft Document – Fertilizers – Determination of total nitrogen in calcium cyanamide nitrate free; German and English version prEN 15560:2021
NS-EN 15475:2009 Fertilizers — Determination of ammoniacal nitrogen
UNE-CEN/TS 15475:2007 EX Fertilizers - Determination of ammoniacal nitrogen
DANSK DS/ISO 25475:2020 Fertilizers – Determination of ammoniacal nitrogen
SN-CEN/TS 15475:2006 Fertilizers — Determination of ammoniacal nitrogen
NS 4746:1975 Water analysis - Determination of ammonia-nitrogen

Association Francaise de Normalisation

NF U42-142*NF EN 15476:2009 Fertilizers - Determination of nitric and ammoniacal nitrogen according to Devarda
NF U42-149*NF EN 15604:2009 Fertilizers - Determination of different forms of nitrogen in the same sample, containing nitrogen as nitric, ammoniacal, urea and cyanamide nitrogen
NF U42-141:1984 Fertilizers. Determination of nitrate nitrogen content. Nitrogen gravimetric method.
NF EN 15476:2009 Fertilizers - Determination of nitrate and ammonia nitrogen according to Devarda
NF EN 15561:2009 Fertilizers - Determination of total nitrogen in nitrated calcium cyanamide
NF T20-286:1982 Nitric acid for industrial use. Determination of ammoniacal nitrogen content. Spectrophotometric method.
NF EN 15560:2009 Fertilizers - Determination of total nitrogen in nitrate-free calcium cyanamide
NF U42-144*NF EN 15558:2009 Fertilizers - Determination of nitric and ammoniacal nitrogen according to Ulsch
NF U42-145*NF EN 15559:2009 Fertilizers - Determination of nitric and ammoniacal nitrogen according to Arnd
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
NF U42-147*NF EN 15561:2009 Fertilizers - Determination of total nitrogen in calcium cyanamide containing nitrate
NF EN 15475:2009 Fertilizers - Determination of ammoniacal nitrogen
NF EN 15559:2009 Fertilizers - Dosage of nitrate and ammonia nitrogen according to Arnd
NF U42-121*NF EN 15475:2009 Fertilizers - Determination of ammoniacal nitrogen

GOSTR

GOST R ISO 15604-2019 Fertilizers. Determination of different forms of nitrogen in the same sample, containing nitrogen as nitric, ammoniacal, urea and cyanamide nitrogen

German Institute for Standardization

DIN EN 15558:2009-06 Fertilizers - Determination of nitric and ammoniacal nitrogen according to Ulsch; German version EN 15558:2009
DIN EN 15559:2009-06 Fertilizers - Determination of nitric and ammoniacal nitrogen according to Arnd; German version EN 15559:2009
DIN EN 15476:2009-04 Fertilizers - Determination of nitric and ammoniacal nitrogen according to Devarda; German version EN 15476:2009
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 15604:2008 Fertilizers - Determination of different forms of nitrogen in the same sample, containing nitrogen as nitric, ammoniacal, urea and cyanamide nitrogen; German version CEN/TS 15604:2007
DIN EN 15604:2009-06 Fertilizers - Determination of different forms of nitrogen in the same sample, containing nitrogen as nitric, ammoniacal, urea and cyanamide nitrogen; German version EN 15604:2009 / Note: To be replaced by DIN EN ISO 15604 (2019-06).
DIN EN 15750:2010-02 Fertilizers - Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods; German version EN 15750:2009
DIN EN 15560:2021 Fertilizers - Determination of total nitrogen in calcium cyanamide nitrate free; German and English version prEN 15560:2021
DIN EN 15561:2021-12 Fertilizers - Determination of total nitrogen in calcium cyanamide containing nitrates; German and English version prEN 15561:2021 / Note: Date of issue 2021-11-05*Intended as replacement for DIN EN 15561 (2009-06).
DIN EN 15561:2009-06 Fertilizers - Determination of total nitrogen in calcium cyanamide containing nitrates; German version EN 15561:2009 / Note: To be replaced by DIN EN 15561 (2021-12).
DIN EN 15476:2009 Fertilizers - Determination of nitric and ammoniacal nitrogen according to Devarda; English version of DIN EN 15476:2009-04
DIN EN 15475:2009-04 Fertilizers - Determination of ammoniacal nitrogen; German version EN 15475:2009 / Note: To be replaced by DIN EN ISO 25475 (2019-06).
DIN EN 15561:2021 Fertilizers - Determination of total nitrogen in calcium cyanamide containing nitrates; German and English version prEN 15561:2021
DIN EN 15561:2009 Fertilizers - Determination of total nitrogen in calcium cyanamide containing nitrates; English version of DIN EN 15561:2009-06
DIN CEN/TS 15559:2007 Fertilizers - Determination of nitric and ammoniacal nitrogen according to Arnd; German version CEN/TS 15559:2007
DIN EN 15558:2009 Fertilizers - Determination of nitric and ammoniacal nitrogen according to Ulsch; English version of DIN EN 15558:2009-06
DIN EN 15559:2009 Fertilizers - Determination of nitric and ammoniacal nitrogen according to Arnd; English version of DIN EN 15559:2009-06
DIN EN 15475:2009 Fertilizers - Determination of ammoniacal nitrogen; English version of DIN EN 15475:2009-04

British Standards Institution (BSI)

DD CEN/TS 15559:2007 Fertilizers. Determination of nitric and ammoniacal nitrogen according to Arnd
BS EN 15559:2009 Fertilizers - Determination of nitric and ammoniacal nitrogen according to Arnd
BS 4267-1:1988(1999) Ammonium nitrate — Part 1 : Method for determination of ammoniacal nitrogen content
BS 4267-1:1988 Ammonium nitrate - Method for determination of ammoniacal nitrogen content
BS DD CEN/TS 15604:2007 Fertilizers - Determination of different forms of nitrogen in the same sample, containing nitrogen as nitric, ammoniacal, urea and cyanamide nitrogen
BS EN 15604:2009 Fertilizers - Determination of different forms of nitrogen in the same sample, containing nitrogen as nitric, ammoniacal, urea and cyanamide nitrogen
DD CEN/TS 15604:2007 Fertilizers — Determination of different forms of nitrogen in the same sample, containing nitrogen as nitric, ammoniacal, urea and cyanamide nitrogen
14/30313910 DC BS ISO 15604. Fertilizers. Determination of different forms of nitrogen in the same sample, containing nitrogen as nitric, ammoniacal, urea and cyanamide nitrogen
BS DD CEN/TS 15750:2009 Fertilizers - Determination of different forms of nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods
DD CEN/TS 15560:2007 Fertilizers. Determination of total nitrogen in calcium cyanamide nitrate free
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
BS EN 15561:2023 Inorganic fertilizers. Determination of total nitrogen in calcium cyanamide containing nitrates
DD CEN/TS 15561:2007 Fertilizers. Determination of total nitrogen in calcium cyanamide containing nitrates
BS 5551-4.1.2:1982 Fertilizers. Chemical analysis. Determination of nitrogen. Determination of ammoniacal nitrogen, titrimetric method after distillation
BS EN 15476:2009 Fertilizers - Determination of nitric and ammoniacal nitrogen according to Devarda
BS 5551-4.1.1:1981 Fertilizers - Chemical analysis - Determination of nitrogen - Nitron gravimetric method for determination of nitrate nitrogen
BS DD CEN/TS 15475:2006 Fertilizers - Determination of ammoniacal nitrogen
BS 4267-2:1988 Ammonium nitrate - Method for determination of total nitrogen content
BS DD CEN/TS 15476:2006 Fertilizers - Determination of nitric and ammoniacal nitrogen according to Devarda
BS DD CEN/TS 15558:2007 Fertilizers - Determination of nitric and ammoniacal nitrogen according to Ulsch
21/30442090 DC BS EN 15561. Fertilizers. Determination of total nitrogen in calcium cyanamide containing nitrates
BS DD CEN/TS 15559:2007 Fertilizers - Determination of nitric and ammoniacal nitrogen according to Arnd
BS 4267-2:1988(1999) Ammonium nitrate — Part 2 : Method for determination of total nitrogen content
BS EN 15475:2009 Fertilizers — Determination of ammoniacal nitrogen

CEN - European Committee for Standardization

PD CEN/TS 15559:2007 Fertilizers - Determination of nitric and ammoniacal nitrogen according to Arnd
PD CEN/TS 15604:2007 Fertilizers - Determination of different forms of nitrogen in the same sample@ containing nitrogen as nitric@ ammoniacal@ urea and cyanamide nitrogen
PD CEN/TS 15476:2006 Fertilizers - Determination of nitric and ammoniacal nitrogen according to Devarda
PD CEN/TS 15560:2007 Fertilizers - Determination of total nitrogen in calcium cyanamide nitrate free
PD CEN/TS 15558:2007 Fertilizers - Determination of nitric and ammoniacal nitrogen according to Ulsch
PD CEN/TS 15561:2007 Fertilizers - Determination of total nitrogen in calcium cyanamide containing nitrates
PD CEN/TS 15475:2006 Fertilizers - Determination of ammoniacal nitrogen

Danish Standards Foundation

DS/EN 15559:2009 Fertilizers - Determination of nitric and ammoniacal nitrogen according to Arnd
DS/EN 15750:2010 Fertilizers - Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods
DS/EN 15604:2009 Fertilizers - Determination of different forms of nitrogen in the same sample, containing nitrogen as nitric, ammoniacal, urea and cyanamide nitrogen
DS 223:1991 Water analysis. Determination of the sum of nitrite- and nitrate-nitrogen
DS/EN 15476:2009 Fertilizers - Determination of nitric and ammoniacal nitrogen according to Devarda
DS/EN 15560:2009 Fertilizers - Determination of total nitrogen in calcium cyanamide nitrate free
DS/EN 15558:2009 Fertilizers - Determination of nitric and ammoniacal nitrogen according to Ulsch
DS/EN 15561:2009 Fertilizers - Determination of total nitrogen in calcium cyanamide containing nitrates
DS/EN 15475:2009 Fertilizers - Determination of ammoniacal nitrogen

Lithuanian Standards Office

LST EN 15559-2009 Fertilizers - Determination of nitric and ammoniacal nitrogen according to Arnd
LST EN 15750-2010 Fertilizers - Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods
LST EN 15604-2009 Fertilizers - Determination of different forms of nitrogen in the same sample, containing nitrogen as nitric, ammoniacal, urea and cyanamide nitrogen
LST EN 15476-2009 Fertilizers - Determination of nitric and ammoniacal nitrogen according to Devarda
LST EN 15560-2009 Fertilizers - Determination of total nitrogen in calcium cyanamide nitrate free
LST EN 15558-2009 Fertilizers - Determination of nitric and ammoniacal nitrogen according to Ulsch
LST EN 15561-2009 Fertilizers - Determination of total nitrogen in calcium cyanamide containing nitrates
LST EN 15475-2009 Fertilizers - Determination of ammoniacal nitrogen

AENOR

UNE-EN 15559:2009 Fertilizers - Determination of nitric and ammoniacal nitrogen according to Arnd
UNE-EN 15750:2010 Fertilizers - Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods
UNE-EN 15604:2009 Fertilizers - Determination of different forms of nitrogen in the same sample, containing nitrogen as nitric, ammoniacal, urea and cyanamide nitrogen
UNE-EN 15476:2009 Fertilizers - Determination of nitric and ammoniacal nitrogen according to Devarda
UNE-EN 15560:2009 Fertilizers - Determination of total nitrogen in calcium cyanamide nitrate free
UNE-EN 15558:2009 Fertilizers - Determination of nitric and ammoniacal nitrogen according to Ulsch
UNE-EN 15561:2009 Fertilizers - Determination of total nitrogen in calcium cyanamide containing nitrates
UNE-EN 15475:2009 Fertilizers - Determination of ammoniacal nitrogen

RU-GOST R

GOST EN 15604-2013 Fertilizers. Determination of different forms of nitrogen in the same sample: nitric, ammoniacal, cyanamide and urea nitrogen
GOST EN 15750-2016 Fertilizers. Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods
GOST 30181.6-1994 Mineral fertilizers. Method for determination of mass fraction of nitrogen in ammonium salts (in ammonium form, using the formaldehyde method)
GOST 27753.7-1988 Greenhouse grounds methods for determination of nitrate nitrogen
GOST 30181.4-1994 Mineral fertilizers. Method for determination of total mass fraction of nitrogen in compound fertilizers and nitrale fertilizers in ammonium and nitrate forms (Deward Method)
GOST 26716-1985 Organic fertilizers. Methods for determination of ammonium nitrogen
GOST R 55479-2013 Meat and meat products. Method for determination of amino-ammonia nitrogen
GOST EN 15476-2013 Fertilizers. Determination of nitric and ammoniacal nitrogen according to Devarda
GOST EN 15559-2013 Fertilizers. Determination of nitric and ammoniacal nitrogen according to Arnd
GOST EN 15475-2013 Fertilizers. Determination of ammoniacal nitrogen
GOST EN 15558-2013 Fertilizers. Determination of nitric and ammoniacal nitrogen according to Ulsch selon

European Committee for Standardization (CEN)

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
EN 15604:2009 Fertilizers - Determination of different forms of nitrogen in the same sample, containing nitrogen as nitric, ammoniacal, urea and cyanamide nitrogen
EN 15750:2009 Fertilizers - Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods
EN 15476:2009 Fertilizers - Determination of nitric and ammoniacal nitrogen according to Devarda
EN 15558:2009 Fertilizers - Determination of nitric and ammoniacal nitrogen according to Ulsch

RO-ASRO

STAS SR ISO 7408:1993 Fertilizers. Determination of ammoniacal nitrogen content in the presence of other substances which release ammonia when treated with sodium hydroxide. Titrimetric method
SR ISO 4176:1981 Fertilizers. Determination of nitrate nitrogen content. Nitrogen gravimetric method
SR 184-25-1998 Ethyl alcohol. Determination of ammonia and azotic bases nitrogen content

Korean Agency for Technology and Standards (KATS)

KS M ISO 4176-2006(2011) Fertilizers－Determination of nitrate nitrogen content－Nitron gravimetric method
KS M ISO 4176-2012 Fertilizers－Determination of nitrate nitrogen content－Nitron gravimetric method

BE-NBN

NBN T 91-255-1976 Water analysis methods - Determination of the ammoniacal and organic nitrogen - (Kjeldahl nitrogen)
NBN T 03-055-1979 Ammonium nitrate for industrial use - Determination of ammoniacal nitrogen content - Titrimetric method after distillation
NBN T 03-069-1979 Ammonium sulphate for industrial use - Determination of ammoniacal nitrogen content - Titrimetric method after distillation
NBN T 03-041-1979 Nitric acid for industrial use - Determination of ammoniacal nitrogen content - Spectrophotometric method

PH-BPS

PTS 86-1970 Method of Test for the Determination of Armoniacal Nitrogen

TR-TSE

TS 2466-1976 Nitric Acit For Industrial Use Determination of Ammoniacal Nitrogen Content Spectrophotoraetric Method

International Organization for Standardization (ISO)

ISO 2991:1974 Nitric acid for industrial use; Determination of ammoniacal nitrogen content; Spectrophotometric method
ISO 3330:1975 Ammonium nitrate for industrial use; Determination of ammoniacal nitrogen content; Titrimetric method after distillation
ISO 4176:1981 Fertilizers; Determination of nitrate nitrogen content; Nitron gravimetric method

VN-TCVN

TCVN 3706-1990 Aquatic products.Method for the determination of nitrogen ammonia content
TCVN 3707-1990 Aquatic products.Method for the determination of amine ammonia nitrogen content
TCVN 3708-1990 Aquatic products.Method for the determination of nitrogen amino acid content

IN-BIS

IS 5194-1969 Determination method of nitrogen-Kjeldahl method

CZ-CSN

CSN 65 4833-1982 Minerál Fertilizers Determination of Nitrie Nitrogen by Titrimetric Method
CSN 66 8102 Cast.28-1997 Smokeless powder. Test Methods. Determination of nitrogen binary nitrocellulose dust

American Society for Testing and Materials (ASTM)

ASTM D1426-98 Standard Test Methods for Ammonia Nitrogen In Water

GSO

BH GSO ISO 25475:2022 Fertilizers — Determination of ammoniacal nitrogen
GSO ISO 25475:2021 Fertilizers — Determination of ammoniacal nitrogen

NO-SN

NS 4745-1991 Water analysis - Determination of the sum of nitrite nitrogen and nitrate nitrogen

ES-UNE

UNE-EN 15561:2024 Inorganic fertilizers - Determination of total nitrogen in calcium cyanamide containing nitrates