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When measuring ammonia nitrogen in water

When measuring ammonia nitrogen in water, Total:263 items.

In the international standard classification, When measuring ammonia nitrogen in water involves: Vocabularies, Water quality, Sugar. Sugar products. Starch, Animal feeding stuffs, Fertilizers, Medical sciences and health care facilities in general, Organic chemicals, Test conditions and procedures in general, Products of the chemical industry, Paint ingredients, Leather technology, Beverages, General methods of tests and analysis for food products, Spices and condiments. Food additives, Meat, meat products and other animal produce, Products of the textile industry, Non-ferrous metals, Air quality, Analytical chemistry, Farming and forestry, Textile fibres, Adhesives, Construction materials, Microbiology, Plastics, Geology. Meteorology. Hydrology, Cellular materials, Coals, Hospital equipment, Milk and milk products, Soil quality. Pedology.

Professional Standard - Environmental Protection, When measuring ammonia nitrogen in water

HJ 537-2009 Water quality.Determination of ammonia nitrogen.Distillation-neutralization titration
HJ 536-2009 Water quality.Determination of ammonia nitrogen.Salicylic acid spectrophotometry
HJ/T 195-2005 Water quality - Determination of ammonia-nitrogen Gas-phase molecular absorption spectrometry
HJ 535-2009 Water quality.Determination of ammonia nitrogen.Nessler's reagent spectrophotometry
HJ 665-2013 Water quality.Determination of ammonium nitrogen by continuous flow analysis (CFA) and Salicylic acid spectrophotometry
HJ 666-2013 Water quality.Determination of ammonium nitrogen by flow injection analysis (FIA) and Salicylic acid spectrophotometry
HJ 550-2015 Water quality.Determination of cobalt.5-Cl-PADAB Spectrophotometry
HJ 550-2009 Water quality.Determination of cobalt.5-CI-PADAB spectrophotometry

Danish Standards Foundation, When measuring ammonia nitrogen in water

DS 224:1975 Water analysis. Determination of ammonia-nitrogen
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/EN 15560:2009 Fertilizers - Determination of total nitrogen in calcium cyanamide nitrate free
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 15561:2009 Fertilizers - Determination of total nitrogen in calcium cyanamide containing nitrates
DS/EN ISO 17234-2:2011 Leather - Chemical tests for the determination of certain azo colorants in dyed leathers - Part 2: Determination of 4-aminoazobenzene
DS 2217:1992 Water quality. Determination of the number of bacteria at 37 Centigrades in swimming pool water. Membran filtration method
DS/CEN/TS 17403:2021 Fertilizers – Determination of cold water insoluble nitrogen and hot water insoluble nitrogen in solid urea formaldehyde and methylene urea slow-release fertilizers and determination of the solubility of nutrient polymers in phosphate buffer solution with

American Society for Testing and Materials (ASTM), When measuring ammonia nitrogen in water

ASTM D1426-98 Standard Test Methods for Ammonia Nitrogen In Water
ASTM D1426-03 Standard Test Methods for Ammonia Nitrogen In Water
ASTM C1494-01(2007) Standard Test Methods for Determination of Mass Fraction of Carbon, Nitrogen, and Oxygen in Silicon Nitride Powder
ASTM C1494-13 Standard Test Methods for Determination of Mass Fraction of Carbon, Nitrogen, and Oxygen in Silicon Nitride Powder
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 D5475-93(1997) Standard Test Method for Nitrogen- and Phosphorus-Containing Pesticides in Water by Gas Chromatography with a Nitrogen-Phosphorus Detector
ASTM D6016-17 Standard Test Method for Determination of Nitrogen, Water Extractable in Leather
ASTM D5475-93(2002) Standard Test Method for Nitrogen- and Phosphorus-Containing Pesticides in Water by Gas Chromatography with a Nitrogen-Phosphorus Detector
ASTM D6016-06(2012) Standard Test Method for Determination of Nitrogen, Water Extractable in Leather
ASTM D6016-96 Standard Test Method for Determination of Nitrogen, Water Extractable in Leather
ASTM D6016-96(2001) Standard Test Method for Determination of Nitrogen, Water Extractable in Leather
ASTM D6016-06 Standard Test Method for Determination of Nitrogen, Water Extractable in Leather
ASTM D6979-18 Standard Test Method for Polyurethane Raw Materials: Determination of Basicity in Polyols, Expressed as Percent Nitrogen
ASTM D5315-04(2011) Standard Test Method for Determination of N-Methyl-Carbamoyloximes and N-Methylcarbamates in Water by Direct Aqueous Injection HPLC with Post-Column Derivatization
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 D6979-03 Standard Test Method for Polyurethane Raw Materials: Determination of Basicity in Polyols, Expressed as Percent Nitrogen
ASTM D6979-08 Standard Test Method for Polyurethane Raw Materials: Determination of Basicity in Polyols, Expressed as Percent Nitrogen
ASTM D6565-00 Standard Test Method for Determination of Water (Moisture) Content of Soil by the Time-Domain Reflectometry (TDR) Method
ASTM D6565-00(2005) Standard Test Method for Determination of Water (Moisture) Content of Soil by the Time-Domain Reflectometry (TDR) Method
ASTM D5176-91(2003) Standard Test Method for Total Chemically Bound Nitrogen in Water by Pyrolysis and Chemiluminescence Detection
ASTM D5176-91(1995) Standard Test Method for Total Chemically Bound Nitrogen in Water by Pyrolysis and Chemiluminescence Detection
ASTM D5176-08 Standard Test Method for Total Chemically Bound Nitrogen in Water by Pyrolysis and Chemiluminescence Detection
ASTM D4663-20 Standard Test Method for Polyurethane Raw Materials: Determination of Hydrolyzable Chlorine of Isocyanates
ASTM D4663-15 Standard Test Method for Polyurethane Raw Materials: Determination of Hydrolyzable Chlorine of Isocyanates

RO-ASRO, When measuring ammonia nitrogen in water

SR 184-25-1998 Ethyl alcohol. Determination of ammonia and azotic bases nitrogen content
STAS 8683-1970 SURFACE AND WASTE WATERS Determination of ainm nia nitrogen
STAS 12200-1985 SLUDGES RESULTED FROM= SURFACE WATERS TREATMENT AND WASTE WATERS PURIFI- CATION Nitrogen content determination
STAS 11985-1985 WOOL Oetcrmination ol solubility index in permethanoic acid-ammonia

Professional Standard - Urban Construction, When measuring ammonia nitrogen in water

CJ/T 75-1999 Municipal sewage.Determination of nitrogen(ammonia)
CJ 26.25-1991 Determination of Standard Ammonia Nitrogen in Municipal Sewage Water Quality Inspection Method
CJ/T 3018.6-1993 Leachate.Determination of ammoniacal nitrogen.Distillation and titration method

BE-NBN, When measuring ammonia nitrogen in water

NBN T 91-255-1976 Water analysis methods - Determination of the ammoniacal and organic nitrogen - (Kjeldahl nitrogen)
NBN T 91-252-1976 Water analysis methods - Determination of the ammoniacal nitro-gen after preliminary distillation
NBN T 91-254-1976 Water analysis methods - Determination of the ammoniacal nitrogen -Direct photometric methodwith sodium phenate
NBN T 91-251-1976 Water analysis methods — Determination of the ammoniacal nitrogen — Direct photometric method with Nessler reagent

Association Francaise de Normalisation, When measuring ammonia nitrogen in water

NF U42-147*NF EN 15561:2009 Fertilizers - Determination of total nitrogen in calcium cyanamide containing nitrate
NF T90-015:1975 TESTING WATER-DETERMINATION OF NITROGEN (AMMONIA)
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 T90-060:2004 Water quality - Determination of nitrogen - Determination of bound nitrogen (TN sub b), following oxidation to nitrogen oxides.
NF EN 15561:2009 Engrais - Dosage de l'azote total dans la cyanamide calcique nitratée
NF EN 15560:2009 Engrais - Dosage de l'azote total dans la cyanamide calcique exempte de nitrate
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 T90-080*NF EN ISO 11732:2005 Water quality - Determination of ammonium nitrogen - Method by flow analysis (CFA and FIA) and spectrometric detection.
NF EN ISO 11732:2005 Qualité de l'eau - Dosage de l'azote ammoniacal - Méthode par analyse en flux (CFA et FIA) et détection spectrométrique
NF EN 15604:2009 Engrais - Détermination des différentes formes d'azote dans un même échantillon contenant l'azote sous forme nitrique, ammoniacale, uréique et cyanamidique
NF EN ISO 17234-2:2011 Cuir - Essais chimiques pour le dosage de certains colorants azoïques dans les cuirs teints - Partie 2 : dosage du 4-aminoazobenzène
NF T90-080:1997 Water quality - Determination of ammonium nitrogen by flow analysis (CFA and FIA) and spectrometric detection.
NF U42-125:1985 Fertilizers. Determination of ammoniacal nitrogen content in the presence of other substances which release ammonia when treated with sodium hydroxide. Titrimetric method.
NF EN ISO 14362-3:2017 Textiles - Méthodes de détermination de certaines amines aromatiques dérivées de colorants azoïques - Partie 3 : détection de l'utilisation de certains colorants azoïques susceptibles de libérer du 4-aminoazobenzène
NF T76-113:1983 Water adhesives. Aminoplastic. Determination of conventional gel time at different temperatures.
XP CEN/TS 17403:2021 Engrais - Dosage de l'azote insoluble dans l'eau froide et de l'azote insoluble dans l'eau chaude dans les engrais à libération lente urée-formaldéhyde solides etméthylène-urée, et détermination de la solubilité des polymères nutritifs da...
NF T76-113:2021 Water-based adhesives - Aminoplastics - Conventional determination of gel setting time at different temperatures
XP U42-656*XP CEN/TS 17403:2021 Fertilizers - Determination of cold water insoluble nitrogen and hot water insoluble nitrogen in solid urea formaldehyde and methylene urea slow-release fertilizers and determination of the solubility of nutrient polymers in phosphate buffer solution with
NF G06-030*NF ISO 2915:2017 Wool - Determination of cysteic acid content of wool hydrolysates by paper electrophoresis and colorimetry

Professional Standard - Light Industry, When measuring ammonia nitrogen in water

QB/T 5015-2016 The determination of α-amino nitrogen in sugar beet
QB/T 2186-1995 Determination of Liquid Nitrogen in Hydrolyzed Protein by Ammonia Gas Sensitive Electrode

GOSTR, When measuring ammonia nitrogen in water

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

Group Standards of the People's Republic of China, When measuring ammonia nitrogen in water

T/NAIA 001-2020 Determination of ammoniacal nitrogen in fermented feed Kjeldahl method
T/NAIA 0169-2022 Water Quality Determination of Ammonia Nitrogen by Ion Chromatography
T/CPMA 021-2020 Method of on-site detection of ammonia nitrogen in drinking water - Salicylic Acid Method
T/CHES 12-2017 Water Quality Determination of Ammonia Nitrogen Gas Phase Molecular Absorption Spectrometry
T/CPCIF 0168-2021 Rapid detection kits for nitrite，nitrate and ammonia nitrogen in water
T/CHES 27-2019 Water Quality Determination of Ammonia Nitrogen Automatic Analysis Nessler's Reagent Spectrophotometry
T/NAIA 004-2020 Determination of Ammonia Nitrogen Concentration in Rumen Fluid Alkaline Sodium Hypochlorite-Phenol Spectrophotometry
T/CCAS 008-2019 Analytical methods of the ammonia in fly ash for cement and concrete
T/ZAQ 10117-2023 Determination of Microcystis Gene in Water Real-time Quantitative PCR methods

International Organization for Standardization (ISO), When measuring ammonia nitrogen in water

ISO 7408:1983 Fertilizers; Determination of ammoniacal nitrogen content in the presence of other substances which release ammonia when treated with sodium hydroxide; Titrimetric method
ISO 15604:2016 Fertilizers - Determination of different forms of nitrogen in the same sample, containing nitrogen as nitric, ammoniacal, urea and cyanamide nitrogen
ISO 11732:2005 Water quality - Determination of ammonium nitrogen - Method by flow analysis (CFA and FIA) and spectrometric detection
ISO 23695:2023 Water quality — Determination of ammonium nitrogen in water — Small-scale sealed tube method
ISO 17234-2:2011 | IULTCS/IUC 20-2 Leather — Chemical tests for the determination of certain azo colorants in dyed leathers — Part 2: Determination of 4-aminoazobenzene
ISO 2913:1975 Wool; Colorimetric determination of cystine plus cysteine in hydrolysates
ISO 13395:1996 Water quality - Determination of nitrite nitrogen and nitrate nitrogen and the sum of both by flow analysis (CFA and FIA) and spectrometric detection
ISO 25761:2014 Plastics - Polyols for use in the production of polyurethanes - Determination of basicity (total amine value), expressed as percent nitrogen
ISO/FDIS 14897 Plastics — Polyols for use in the production of polyurethanes — Determination of water content
ISO 11722:2013 Solid mineral fuels - Hard coal - Determination of moisture in the general analysis test sample by drying in nitrogen
ISO 23697-2:2023 Water quality — Determination of total bound nitrogen (ST-TNb) in water using small-scale sealed tubes — Part 2: Chromotropic acid colour reaction

RU-GOST R, When measuring ammonia nitrogen in water

GOST EN 15604-2013 Fertilizers. Determination of different forms of nitrogen in the same sample: nitric, ammoniacal, cyanamide and urea nitrogen
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 EN 15750-2016 Fertilizers. Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods
GOST 30181.8-1994 Mineral fertilizers. Method for determination of mass fraction of ammonium nitrogen in compound fertilizers (chloramine method)
GOST 30181.7-1994 Mineral fertilizers. Method for determination of total mass fraction of nitrogen in compound fertilizers (in ammonium and amide forms, using hypochlorite method)
GOST 32527-2013 Mineral nitrogen-containing substances. Determination in air and water
GOST R ISO 17234-2-2015 Leather. Chemical tests for the determination of certain azo colorants in dyed leathers. Part 2. Method for determination of 4-aminoazobenzene
GOST 30181.1-1994 Mineral fertilizers. Method for determination of total overall mass fraction of nitrogen in compound fertilizers (in ammonium and amide forms, with deammoniation)
GOST 30181.2-1994 Mineral fertilizers. Method for determination of total mass fraction of nitrogen in single - component fertlizers (in ammonium and amide forms, no deammoniation)
GOST 12577-1967 Refined sugar. Methods for determination of lump sugar solidity and dissolution rate in water

VN-TCVN, When measuring ammonia nitrogen in water

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

Professional Standard - Agriculture, When measuring ammonia nitrogen in water

SC/T 9444-2023 Determination of ammonia nitrogen in aquaculture water by gas phase molecular absorption spectrometry
GB 3595-1983 Determination of ammonia nitrogen content in fertilizers Titration method after distillation
水产品质量安全检验手册 2.11.2.0-2005 Chapter II Basic Analysis Methods for Physical and Chemical Testing of Aquatic Products Eleventh Determination of Amino Acid Nitrogen in Aquatic Products (GBT 5009.39-2003) II. Colorimetry
水产品质量安全检验手册 2.11.1.0-2005 Chapter II Basic Analysis Methods for Physical and Chemical Testing of Aquatic Products Eleventh Determination of Amino Acid Nitrogen in Aquatic Products (GBT 5009.39-2003) 1. Formaldehyde value method
水产品质量安全检验手册 2.17.1.0-2005 Chapter 2 Basic Analysis Methods for Physical and Chemical Testing of Aquatic Products Section 17 Determination of Volatile Base Nitrogen in Aquatic Products (GBT 5009.44-2003) 1. Semi-trace Nitrogen Determination Method

British Standards Institution (BSI), When measuring ammonia nitrogen in water

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
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
BS 5551-4.1.4:1984 Fertilizers. Chemical analysis. Determination of nitrogen. Method for determination of ammoniacal nitrogen content in the presence of other substances which release ammonia when treated with sodium hydroxide (titrimetric method)
DD CEN/TS 15560:2007 Fertilizers. Determination of total nitrogen in calcium cyanamide nitrate free
21/30442087 DC BS EN 15560. Fertilizers. Determination of total nitrogen in calcium cyanamide nitrate free
BS EN 15560:2023 Inorganic fertilizers - Determination of total nitrogen in calcium cyanamide nitrate free
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 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 15750:2009 Fertilizers - Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods
DD CEN/TS 15561:2007 Fertilizers. Determination of total nitrogen in calcium cyanamide containing nitrates
BS EN 15561:2023 Inorganic fertilizers. Determination of total nitrogen in calcium cyanamide containing nitrates
21/30442090 DC BS EN 15561. Fertilizers. Determination of total nitrogen in calcium cyanamide containing nitrates
BS ISO 23695:2023 Water quality. Determination of ammonium nitrogen in water. Small-scale sealed tube method
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
BS 5551 SubSec.4.1.4:1984 Fertilizers. Chemical analysis. Determination of nitrogen. Method for determination of ammoniacal nitrogen content in the presence of other substances which release ammonia when treated with sodium hydroxide (titrimetric method)
21/30396472 DC BS ISO 23695. Water quality. Determination of ammonium nitrogen in water. Small-scale sealed tube method
BS ISO 23697-2:2023 Water quality. Determination of total bound nitrogen (ST-TNb) in water using small-scale sealed tubes - Chromotropic acid colour reaction
BS ISO 23697-1:2023 Water quality. Determination of total bound nitrogen (ST-TNb) in water using small-scale sealed tubes - Dimethylphenol colour reaction
BS PD CEN/TS 17403:2021 Fertilizers. Determination of cold water insoluble nitrogen and hot water insoluble nitrogen in solid urea formaldehyde and methylene urea slow-release fertilizers and determination of the solubility of nutrient polymers in phosphate buffer solution with
21/30426878 DC BS ISO 23697-2. Water quality. Determination of total nitrogen (TNb) in water using small-scale sealed tubes. Part 2. Chromotropic acid based method
BS ISO 13638:2021 Building and civil engineering sealants. Determination of resistance to prolonged exposure to water
21/30426875 DC BS ISO 23697-1. Water quality. Determination of total nitrogen (TNb) in water using small-scale sealed tubes. Part 1. Dimethylphenol based method

German Institute for Standardization, When measuring ammonia nitrogen in water

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 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 EN 15604:2009 Fertilizers - Determination of different forms of nitrogen in the same sample, containing nitrogen as nitric, ammoniacal, urea and cyanamide nitrogen; English version of DIN EN 15604:2009-06
DIN EN 15561:2021 Fertilizers - Determination of total nitrogen in calcium cyanamide containing nitrates; German and English version prEN 15561:2021
DIN EN 15561:2021-12 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 15561:2009 Fertilizers - Determination of total nitrogen in calcium cyanamide containing nitrates; English version of DIN EN 15561:2009-06
DIN EN 15560:2009-06 Fertilizers - Determination of total nitrogen in calcium cyanamide nitrate free; German version EN 15560:2009 / Note: To be replaced by DIN EN 15560 (2021-12).
DIN EN ISO 17234-2:2011-06 Leather - Chemical tests for the determination of certain azo colorants in dyed leathers - Part 2: Determination of 4-aminoazobenzene (ISO 17234-2:2011); German version EN ISO 17234-2:2011
DIN 38406-5:1983-10 German standard methods for the examination of water, waste water and sludge; cations (group E); determination of ammonia-nitrogen (E 5)
DIN EN 15560:2023-10 Inorganic fertilizers - Determination of total nitrogen in calcium cyanamide nitrate free; German version EN 15560:2023
DIN EN 15560:2021-12 Fertilizers - Determination of total nitrogen in calcium cyanamide nitrate free; German and English version prEN 15560:2021 / Note: Date of issue 2021-11-05*Intended as replacement for DIN EN 15560 (2009-06).
DIN EN 15561:2023-10 Inorganic fertilizers - Determination of total nitrogen in calcium cyanamide containing nitrates; German version EN 15561:2023
DIN EN ISO 17234-2:2011 Leather - Chemical tests for the determination of certain azo colorants in dyed leathers - Part 2: Determination of 4-aminoazobenzene (ISO 17234-2:2011); German version EN ISO 17234-2:2011
DIN CEN/TS 17403:2021 Fertilizers - Determination of cold water insoluble nitrogen and hot water insoluble nitrogen in solid urea formaldehyde and methylene urea slow-release fertilizers and determination of the solubility of nutrient polymers in phosphate buffer solution with
DIN CEN/TS 17403:2021-03 Fertilizers - Determination of cold water insoluble nitrogen and hot water insoluble nitrogen in solid urea formaldehyde and methylene urea slow-release fertilizers and determination of the solubility of nutrient polymers in phosphate buffer solution w...
DIN 54286:1975 Testing of textiles; determination of the cysteic acid content in wool hydrolysates
DIN 50450-1:1987-08 Testing of materials for semiconductor technology; determination of impurities in carrier gases and doping gases; determination of water impurity in hydrogen, oxygen, nitrogen, argon and helium by using a diphosphorus pentoxide cell

CZ-CSN, When measuring ammonia nitrogen in water

CSN ISO 7408:1993 Fertizers - Determination of ammoniacal nitogen content in the presence of other substances which release ammonia when treated with sodium hydroxide - Titrimetric method
CSN 58 0703-8-1999 Testing methods of dehydrated products and seasonings - Part 8: Determination of ammoniacal nitrogen

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, When measuring ammonia nitrogen in water

GB/T 34532-2017 Coking wastewater—Determination of ammonia nitrogen content—Formaldehyde method
GB/T 34500.5-2017 Chemical analysis methods for rare earth residue and waste water—Part 5：Determination of ammonia nitrogen content

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China, When measuring ammonia nitrogen in water

GB/T 3600-2000 Fertilizers-Determination of ammoniacal nitrogen content-Formaldehyde method
GB/T 3595-2000 Fertilizers-Determination of ammoniacal nitrogen content-Titrimetric method after distillation
GB/T 24101-2009 Limit and determination of 4-aminoazobenzene in dye products
GB/T 33392-2016 Leather and fur.Chemical tests.Determination of 4-aminoazobenzene derived from azo colorants
GB/T 12143.2-1989 Determination method for amino nitrogen content in fruit and vegetable juice beverages--Formol number
GB 12143.2-12143.3-89 Determination method for amino nitrogen content in fruit and vegetable juice beverages-Formol number Determination method for L-ascorbic acid in fruit and vegetable juice beverages-Ethyl ether extract
GB/T 22974-2008 Determination of isometamidium residues in milk and milk powder.LC-MS-MS method
GB/T 12492-1990 Determination of cystine content of wool hydrolysates by colorimetry
GB/T 18868-2002 Method for determination of moisture,crude protein,crude fat,crude fibre,lysine and methinione in feeds--Near infrared reflectance spectroscopy
GB/T 12491-1990 Determination of systine acid content of wool hydrolysates by paper electrophoresis and colorimetry
GB/T 11220.1-1989 Determination of uranium in soil--CL-5209 extractant-containing resin separation 2-(5-bromo-2-pyridylazo) -5-diethlaminophenol spectrophotometry

Lithuanian Standards Office , When measuring ammonia nitrogen in water

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 15560-2009 Fertilizers - Determination of total nitrogen in calcium cyanamide nitrate free
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 15561-2009 Fertilizers - Determination of total nitrogen in calcium cyanamide containing nitrates
LST EN ISO 17234-2:2011 Leather - Chemical tests for the determination of certain azo colorants in dyed leathers - Part 2: Determination of 4-aminoazobenzene (ISO 17234-2:2011)
LST CEN/TS 17403-2021 Fertilizers - Determination of cold water insoluble nitrogen and hot water insoluble nitrogen in solid urea formaldehyde and methylene urea slow-release fertilizers and determination of the solubility of nutrient polymers in phosphate buffer solution with

European Committee for Standardization (CEN), When measuring ammonia nitrogen in water

EN 15604:2009 Fertilizers - Determination of different forms of nitrogen in the same sample, containing nitrogen as nitric, ammoniacal, urea and cyanamide nitrogen
EN 15560:2023 Inorganic fertilizers - Determination of total nitrogen in calcium cyanamide nitrate free
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 15561:2023 Inorganic fertilizers - Determination of total nitrogen in calcium cyanamide containing nitrates
EN 15561:2009 Fertilizers - Determination of total nitrogen in calcium cyanamide containing nitrates
EN ISO 13395:1996 Water Quality - Determination of Nitrite Nitrogen and Nitrate Nitrogen and the Sum of Both by Flow Analysis (CFA and FIA) and Spectrometric Detection
PD CEN/TS 17403:2021 Fertilizers - Determination of cold water insoluble nitrogen and hot water insoluble nitrogen in solid urea formaldehyde and methylene urea slow-release fertilizers and determination of the solubility of nutrient polymers in phosphate buffer solution with

AENOR, When measuring ammonia nitrogen in water

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 15560:2009 Fertilizers - Determination of total nitrogen in calcium cyanamide nitrate free
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 15561:2009 Fertilizers - Determination of total nitrogen in calcium cyanamide containing nitrates
UNE-EN ISO 17234-2:2011 Leather - Chemical tests for the determination of certain azo colorants in dyed leathers - Part 2: Determination of 4-aminoazobenzene (ISO 17234-2:2011)

PT-IPQ, When measuring ammonia nitrogen in water

E 211-1967

CEN - European Committee for Standardization, When measuring ammonia nitrogen in water

PD CEN/TS 15560:2007 Fertilizers - Determination of total nitrogen in calcium cyanamide nitrate free
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 15561:2007 Fertilizers - Determination of total nitrogen in calcium cyanamide containing nitrates

国家市场监督管理总局、中国国家标准化管理委员会, When measuring ammonia nitrogen in water

GB/T 24101-2018 Limit and determination of 4-aminoazobenzene in dye products

Korean Agency for Technology and Standards (KATS), When measuring ammonia nitrogen in water

KS I ISO 11732:2008 Water quality－Determination of ammonium nitrogen－Method by flow analysis(CFA and FIA) and spectrometric detection
KS M ISO 7408-2007(2012) Fertilizers－Determination of ammoniacal nitrogen content in the presence of other substances which release ammonia when treated with sodium hydroxide－Titrimetric method
KS I ISO 11732-2008(2018) Water quality－Determination of ammonium nitrogen－Method by flow analysis(CFA and FIA) and spectrometric detection
KS K ISO 2913:2018 Wool — Colorimetric determination of cystine plus cysteine in hydrolysates
KS M ISO 7408:2007 Fertilizers-Determination of ammoniacal nitrogen content in the presence of other substances which release ammonia when treated with sodium hydroxide-Titrimetric method
KS M ISO 7408:2013 Fertilizers－Determination of ammoniacal nitrogen content in the presence of other substances which release ammonia when treated with sodium hydroxide－Titrimetric method
KS M ISO 17234-2:2019 Leather — Chemical tests for the determination of certain azo colorants in dyed leathers — Part 2: Determination of 4-aminoazobenzene
KS M ISO 17234-2:2014 Leather — Chemical tests for the determination of certain azo colorants in dyed leathers — Part 2: Determination of 4-aminoazobenzene
KS K ISO 2913:2009 Wool－Colorimetric determination of cystine plus cysteine in hydrolysates
KS I ISO 13395:2008 Water quality-Determination of nitrite nitrogen and nitrate nitrogen and the sum of both by flow analysis (CFA and FIA) and spectrometric detection
KS K ISO 2915:2018 Wool－Determination of cysteic acid content of wool hydrolysates by paper electrophoresis and colorimetry

中华人民共和国环境保护部, When measuring ammonia nitrogen in water

GB 13580.11-1992 Determination of ammonium in the wet precipitation
GB 11220.1-1989 Determination of uranium in soil-CL-5209 extractant-containing resin separation 2-(5-bromo-2-pyridylazo)-5-diethlaminophenol spectrophotometry

FI-SFS, When measuring ammonia nitrogen in water

SFS 3029 E-1976 In the event of any differences in interpretation of this standard the Finnish version shall take precedence over this translation

CU-NC, When measuring ammonia nitrogen in water

NC 93-01-120-1988 Standards System for Envirorment Protection. Hydrosphere. Determination of Ammo-nial and Organic Nitrogen

Hunan Provincial Standard of the People's Republic of China, When measuring ammonia nitrogen in water

DB43/T 1403-2018 Water Quality Determination of Ammonia Nitrogen-Gas-liquid Separation and Collection Spectrophotometry

National Health Commission of the People's Republic of China, When measuring ammonia nitrogen in water

GB 5009.235-2016 Determination of Amino Acid Nitrogen in Food Safety National Standard Food

SE-SIS, When measuring ammonia nitrogen in water

SIS SS 02 81 86-1985 Determination of total arsenic in water - Silver diethyldithiocarbamate spectrometric method
SIS SS 02 81 33-1991 Determination of the sum of the nitrite and nitrate nitrogen content of water
SIS SS 02 81 01-1992 Nitrogen content of water — Determination with Kjeldahl method after reduction with Devarda's alloy

Guangdong Provincial Standard of the People's Republic of China, When measuring ammonia nitrogen in water

DB44/T 317-2006 Determination of the total volatile basic nitrogen in seafood

Professional Standard - Aquaculture, When measuring ammonia nitrogen in water

SC/T 3032-2007 Determination of the total volatile basic nitrogen in fishery products

KR-KS, When measuring ammonia nitrogen in water

KS K ISO 2913-2018 Wool — Colorimetric determination of cystine plus cysteine in hydrolysates
KS M ISO 17234-2-2019 Leather — Chemical tests for the determination of certain azo colorants in dyed leathers — Part 2: Determination of 4-aminoazobenzene
KS K ISO 2913-2018(2023) Wool — Colorimetric determination of cystine plus cysteine in hydrolysates
KS E ISO 11722-2017 Solid mineral fuels－Hard coal－Determination of moisture in the general analysis test sample by drying in nitrogen
KS K ISO 2915-2018 Wool－Determination of cysteic acid content of wool hydrolysates by paper electrophoresis and colorimetry
KS K ISO 2915-2018(2023) Wool－Determination of cysteic acid content of wool hydrolysates by paper electrophoresis and colorimetry

Professional Standard - Chemical Industry, When measuring ammonia nitrogen in water

HG/T 3519-2012 Industrial circulating cooling water.Determination of benzotriazole
HG/T 3519-2023 Determination of benzotriazole in industrial circulating cooling water
HG/T 3519-2003 Industrial circulating cooling water-Determination of Benzotriazole
HG 5-1519-1985 Determination method of benzotriazole in industrial circulating cooling water

NL-NEN, When measuring ammonia nitrogen in water

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

国家质量监督检验检疫总局, When measuring ammonia nitrogen in water

SN/T 4675.23-2016 Determination of ammonia nitrogen in exported wine and grape juice using continuous flow analyzer method

PL-PKN, When measuring ammonia nitrogen in water

PN C04642-04-1991 Water and waste water. Tests of pollutants in atmospheric precipitation. Determination of ammonium nitrogen by colorimetric method
PN C04595 ArkusZ04-1974 Water and waste water Tests for lead Dctermination of lead by dithiocarbamate method
PN Z04009-02-1991 Air purity protection Tests for nitrogen compounds Determination of ammonia in the atmosphere (imision) by photometric, indophenol method
PN C04595-03-1990 Water and waste water Tests for lead Determination of lead by extractivetitrimetric method with sodium diethyldithicarbamate
PN C04611 ArkusZ04-1972 Water and waste water Tests for copper Determination of copper in boilers water flow cirkuits at thermal power stations by colorimetric method with sodium diethyldithiocarbamate Rang?: 0,001÷1,0 rag/l
PN C04611 ArkusZ05-1972 Water and waste water Tests for copper Determination of copper in boilers water flow cirkuits at thermal power stations by colorimetric method with 4-(2-pyridylazo)-resorcinol Rang?: 0,010 -r- 0,20 mg/l
PN Z04009-03-1990 Air purity protection Tests for nitrogen compounds Determination of ammonia in work places by spectrophotometry in visible spectra] region, indopheno] method
PN Z02010-17-1987 Individual respiratory protective e?uipment used in air erwironment Methods of testing Determination of the protection time for acting absorbers against ammonia
PN C04602 ArkusZ02-1972 Water and waste water. Tests for phenols. Determination of vola.tile phenols to 0,5 mg/l by colorimetric method with 4-aminoantipyirine

Fujian Provincial Standard of the People's Republic of China, When measuring ammonia nitrogen in water

DB35/T 2006-2021 Chemical conversion method for determination of nitrate nitrogen isotope in water
DB35/T 1144-2011 Determination of inorganic nitrogen and active phosphate in seawater by flow chemical analysis

Inner Mongolia Provincial Standard of the People's Republic of China, When measuring ammonia nitrogen in water

DB15/T 2037-2020 Determination of tryptophan in feed by microwave hydrolysis-amino acid automatic analyzer method

Shanxi Provincial Standard of the People's Republic of China, When measuring ammonia nitrogen in water

DB14/T 1099-2015 Determination of Hydrolyzable Nitrogen in Soil Alkaline Hydrolysis Distillation Potentiometric Titration

Yunnan Provincial Standard of the People's Republic of China, When measuring ammonia nitrogen in water

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

Professional Standard - Aviation, When measuring ammonia nitrogen in water

HB 5297.17-1984 Determination of Nitrogen in Titanium and Titanium Alloys by Steam Distillation

Professional Standard - Geology, When measuring ammonia nitrogen in water

DZ/T 0064.57-2021 Analytical Methods of Groundwater Quality Part 57: Determination of Ammonia Nitrogen by Nessler's Reagent Spectrophotometry

TR-TSE, When measuring ammonia nitrogen in water

TS 3244-1978 WOOL - COLORIMETRIC DETERMINATION OP CYSTINE PLUS CYTEINE IN HYDROLYSATES

YU-JUS, When measuring ammonia nitrogen in water

JUS H.B8.162-1988 Fertillzets. Determination of water content in fertilizers vrith nitrogen component trom carbamide. Gravimetric metbo?

ZA-SANS, When measuring ammonia nitrogen in water

SANS 13395:1996 Water quality - Determination of nitrite nitrogen and nitrate nitrogen and the sum of both by flow analysis (CFA and FIA) and spectrometric detection
SANS 11722:2005 Solid mineral fuels - Hard coal - Determination of moisture in the general analysis test sample by drying in nitrogen

Tianjin Provincial Standard of the People's Republic of China, When measuring ammonia nitrogen in water

DB12/T 1015-2020 Determination of Nitrogen and Phosphorus in Dung Water of Dairy Farms Mid-infrared Attenuated Total Reflectance Spectrometry

Professional Standard - Ocean, When measuring ammonia nitrogen in water

HY/T 263-2018 Determination of dissolved nitrous oxide in seawater—Headspace equilibrium gas chromatography method

NO-SN, When measuring ammonia nitrogen in water

NS 4865-1983 Air quality - Determination of the sum of nitrite- and nitrate-nitrogen in precipitation

Shandong Provincial Standard of the People's Republic of China, When measuring ammonia nitrogen in water

DB37/T 2094-2012 Determination of Hydroxyproline Content in Aquatic Products by High Performance Liquid Chromatography

未注明发布机构, When measuring ammonia nitrogen in water

BS EN 1141:1995(2000) Method for Determination of proline content of fruit and vegetable juices : Spectrometric method

工业和信息化部, When measuring ammonia nitrogen in water

HG/T 4963.2-2016 Determination of Hazardous Substances in Pigment Printing Paste Products Part 2: Determination of 4-Aminoazobenzene Gas Chromatography-Mass Spectrometry

Anhui Provincial Standard of the People's Republic of China, When measuring ammonia nitrogen in water

DB34/T 1076-2009 Simultaneous Determination of 40 Organophosphorus and Carbamate Pesticide Residues in Vegetables, Fruits, Grain and Tea--Gas Chromatography

AT-ON, When measuring ammonia nitrogen in water

ONR CEN/TS 17403-2021 Fertilizers - Determination of cold water insoluble nitrogen and hot water insoluble nitrogen in solid urea formaldehyde and methylene urea slow-release fertilizers and determination of the solubility of nutrient polymers in phosphate buffer solution with

IT-UNI, When measuring ammonia nitrogen in water

UNI CEN/TS 17403-2021 Fertilizers - Determination of cold water insoluble nitrogen and hot water insoluble nitrogen in solid urea formaldehyde and methylene urea slow-release fertilizers and determination of the solubility of nutrient polymers in phosphate buffer solution with

ES-UNE, When measuring ammonia nitrogen in water

UNE-CEN/TS 17403:2021 Fertilizers - Determination of cold water insoluble nitrogen and hot water insoluble nitrogen in solid urea formaldehyde and methylene urea slow-release fertilizers and determination of the solubility of nutrient polymers in phosphate buffer solution w...

国家药监局, When measuring ammonia nitrogen in water

YY/T 1697-2020 Test method for determination of strength and curing time of synthetic water-activated polyurethane fiberglass orthopedic bandages

Professional Standard - Coal, When measuring ammonia nitrogen in water

MT/T 371-1994 Determination method of sulfur ion in coal mine water p-aminodimethylaniline colorimetric method

Standard Association of Australia （SAA）, When measuring ammonia nitrogen in water

AS 2300.1.2.2:1988 Methods of chemical and physical testing for the dairying industry - General methods and principles - Determination of nitrogen - Nitrogen fractions from milk