Spectrophotometric method for measuring total nitrogen

Spectrophotometric method for measuring total nitrogen, Total:201 items.

The international standard classification for "Spectrophotometric method for measuring total nitrogen" includes: Metalliferous minerals , Iron ores , Other non-ferrous metals and their alloys , Water quality , Cadmium, cobalt and their alloys , Cereals, pulses and derived products , Aluminium and aluminium alloys , Farming and forestry in general , Animal feeding stuffs , Lead, zinc, tin and their alloys , Welding consumables , Non-metalliferous minerals , Magnesium and magnesium alloys , Flow in open channels , Boilers and heat exchangers , Chemical analysis , Oxides , Workplace atmospheres , Ferrous metals , Ferroalloys , Chemical analysis of metals , Salts , Materials for aerospace construction , Aluminium , Pharmaceutics .

The Chinese standard classification for "Spectrophotometric method for measuring total nitrogen" includes: Iron ore , Rare metals and their alloys analysis method , Analysis methods for toxic substances in water , Heavy metals and their alloys analysis method , Cereal crop and forage crop in general , Heavy metals and their alloys , Animal husbandry in general , Livestock and poultry feed and additive , Semimetal and semiconductor material analysis method , Rare refractory metals and their compounds , Metallurgical auxiliary material ore , Light metals and their alloys analysis method , Heavy metal ore , Boiler and its auxiliary equipment , Inorganic chemicals in general , Steel and iron alloy analysis method , Labor sanitation , Environmental Quality Standard for atmosphere, water and soil , Precious metals and its alloy analysis method , Metal physical property test method , Hydrogeological survey , Soil and fertilizer in general , Basic standards and general methods on chemical fertilizers , Basic standards and general methods for water treatment agent .

Group Standards of the People's Republic of China

T/ZJATA 0025-2024 Water quality Total nitrogen determination Prefabricated chromotropic acid reagent spectrophotometry
T/NAIA 097-2021 Determination of total phenolic content in Lycium barbarum by spectrophotometric method
T/ZJATA 0024-2024 Water quality Determination of ammonia nitrogen Pre-made Nessler reagent spectrophotometry
T/CHES 15-2017 Determination of Total Nitrogen in Water Quality Gas Phase Molecular Absorption Spectrometry
T/CHES 27-2019 Water Quality Determination of Ammonia Nitrogen Automatic Analysis Nessler's Reagent Spectrophotometry
T/NAIA 080-2021 Ammonium molybdate spectrophotometric method for measuring total phosphorus in rivers with many sediments

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

GB/T 4325.15-1984 Methods for chemical analysis of molybdenum;The chlorophosphonazo 1 photometric method for the determination of magnesium content
GB/T 3260.2-2013 Methods for Chemical Analysis of Tin - Part 2: Determination of Iron Content - 1,10-Phenanthroline Photometric Method
GB/T 14849.1-1993 Silicon metal－Determination of iron content－1,10-Phenanthroline spectrophotometric method
GB/T 23274.2-2009 Methods for chemical analysis of stannic oxide - Part 2: Determination of iron content - 1，10-phenanthroline photometric method
GB/T 24583.5-2019e Vanadium-nitrogen—Determination of phosphorus content—Bismuth molybdenum blue spectrophotometric method
GB/T 4325.6-1984 Methods for chemical analysis of molybdenum;The ortho-phenanthroline photometric method for the determination of iron content
GB/T 4324.15-1984 Methods for chemical analysis of tungsten--The chlorophosphonazo I photometric method for the determination of magnesium content
GB/T 4324.6-1984 Methods for chemical analysis of tungsten - The ortho-phenanthroline photometric method for the determination of iron content
GB/T 20574-2006 Method for determination of total flavonoids in propolis - Colorimetric method
GB/T 4324.26-1984 Methods for chemical analysis of tungsten - The Nessler reagent photometric method for the determination of nitrogen content
GB/T 13748.4-1992 Magnesium and its alloys--Determination of cerium content--Tribromoarsenazo spectrophotometric method
GB/T 223.49-1994 Methods for chemical analysis of iron, steel and alloy Extraction separation-chlorophosphonazo mA spectrophotometric method for the determination of the total rare earth content
GB 7630-1987 The tribromoarsenazo photometric method for the determination of rare earth oxide content in rice and wheat
GB/T 13748.9-2005 Chemical analysis methods of magnesium and magnesium alloys — Determination of iron content — Orthopenanthroline spectrophotometric method
GB/T 11894-1989 Water quality--Determination of total nitrogen--Alkaline potassium persulfate digestion-UV spectro photometric method
GB/T 24583.5-2019(英文版) Determination of phosphorus content in vanadium-nitrogen alloys - Bismuth phosphomolybdenum blue spectrophotometric method
GB/T 6987.4-2001 Aluminium and aluminium alloys-Determination of copper content-Orthopenanthroline photometric method
GB/T 23278.2-2009 Methods for chemical analysis of sodium stannate—Part 2:Determination of iron content—1,10-phenanthroline photometric method
GB/T 7315.3-1987 Methods for chamical analysis of vanadium pentixide--The ortho-phenanthroline spectrophotometric method forthe determination of iron content
GB 10267.5-1988 Analytical method for calcium metal Distillation-Nessler reagent photometric determination of nitrogen
GB/T 7630-1987 The tribromoarsenazo photometric method for the determination of rare earth oxide content in rice and wheat
GB/T 4325.26-1984 Methods for chemical analysis of molybdenum;The nessler reagent photometric method for the determination of nitrogen content
GB/T 3257.15-1999 Methods for chemical analysis of bauxite--Determination the total content of rare earth oxide--Tribromo-arsenazo photometric method
GB/T 11893-1989 Water quality-Determination of total phosphorus-Ammonium molybdate spectrophotometric method
GB/T 8220.2-1998 Methods for chemical analysis bismuth--Determination of iron content--1, 10-Phenanthroline photometric method
GB 11843-1989 Determination of Nitrogen in Uranium Dioxide Powder and Pellets Spectrophotometric Method
GB/T 14849.1-2007 Methods for chemical analysis of silicon metal—Part 1:Determination of iron content—1 10-Phenanthrolion spectrophotometric method
GB/T 6730.24-1986 Methods for chemical analysis of iron ores; The arsenazo 3 photometric method for the determination of rare earth elements content
GB/T 15076.4-2020 Methods for chemical analysis of tantalum and niobium—Part 4:Determination of iron content—1,10-Phenanthroline spectrophotometry
GB/T 6987.24-2001 Aluminium and aluminium alloys. Determination of copper content. Tribromoarsenazo spectrophotometric method
GB/T 32737-2016 Determination of nitrate nitrogen in soil—Ultraviolet spectrophotometry method
GB/T 11843-1989 Uranium dioxide powder and pellets. Determination of nitrogen. Spectrophotometric method
GB/T 13747.2-1992 and zirconium alloys - Determination of iron content-1, 10-phenanthroline spectrophotometric method
GB/T 16032-1995 Workplace air--Determination of nitrogen oxides--Naphthyl ethylenediamine dihydrochloride spectrophotometric method
GB/T 6730.24-2006 Iron ores - Determination of total rare earth contents - Chlorophosphonazo mA spectrophotometric method
GB/T 3253.2-2008 Methods for chemical analysis of antimony and antimony trioxide - Determination of iron content - Orthophenanthroline spectrophotometric method
GB/T 24583.5-2009 Vanadium-Nitrogen alloy—Determination of phosphorus content—The bismuth molybdenum blue spectrophotometry method
GB 223.49-1985 Methods for chemical analysis of iron,steel and alloy--The extraction separation-chlorophosphonazo mA photometric method for the determination of rare earth elements
GB/T 20931.4-2007 Methods for chemical analysis of lithium-Determination of iron content-Orthopenanthroline spectrophotometric method
GB/T 20931.9-2007 Methods for chemical analysis of lithium—Determination of nitrogen content—Mercuric potassium iodide spectrophotometric method
GB/T 12689.11-2004 The methods for chemical analysis of zinc and zinc alloys—The determination of lanthanum and cerium contents—The tri-bromide arsenazo spectrophotometric method
GB/T 7493-1987 quality - Determination of nitrogen (nitrite) - Spectrophotometric method
GB/T 10574.5-1989 Tin-lead solders-Determination of iron content-1,10-phenanthroline spectrophotometric method
GB/T 5195.10-2006 Fluorspar - Determination of iron content - 1, 10-phenanthroline spectrophotometric method
GB/T 14422-1993 Analysis of water used in boiler and cooling system－Determination of benzotriazole－Ultraviolet spectrophotometry
GB/T 4324.6-2012 Methods for chemical analysis of tungsten - Part 6: Determination of iron content-1,10-phenanthroline spectrophotometry
GB/T 6730.89-2024 Iron ores—Determination of thorium content—Arsenazo Ⅲ spectrophotometric method
GB/T 6437-2002 Determination of phosphorus in feed--Spectphotometry
GB/T 7480-1987 quality - Determination of nitrate - Spectrophotometric method with phenol disulfonic acid
GB/T 13748.5-1992 Magnesium and its alloys--Determination of iron content--Orthophenanthroline spectrophotometric method

Professional Standard - Environmental Protection

HJ 535-2009 Water Quality - Determination of Ammonia Nitrogen - Nesslers Reagent Spectrophotometry
HJ/T 199-2005 Water quality -- Determination of total-nitrogen Gas-phase molecular absorption spectrometry
HJ 634-2012 Soil-Determination of ammonium,nitrite and nitrate by extraction with potassium chloride solution -spectrophotometric methods
HJ 667-2013 Water quality-Determination of total nitrogen by continuous flow analysis(CFA) and N-(1-naphthyl)ethylene diamine dihydrochloride
HJ 550-2009 Water quality - Determination of cobalt - 5-CI-PADAB spectrophotometry
HJ 668-2013 Water quality-Determination of total nitrogen by flow injection analysis（FIA）and N-(1-naphthyl)ethylene diamine dihydrochloride spectrophotometry
HJ 1191-2021 Water quality—Determination of azide—Spectrophotometry
HJ 666-2013 Water quality-Determination of ammonium nitrogen by flow injection analysis (FIA) and Salicylic acid spectrophotometry
HJ 665-2013 Water quality - Determination of ammonium nitrogen by continuous flow analysis(CFA) and Salicylic acid spectrophotometry
HJ/T 346-2007 Water quality-Determination of nitrate-nitrogen-Ultraviolet spectrophotometry
HJ 536-2009 Water quality-Determination of ammonia nitrogen-Salicylic acid spectrophotometry
HJ 636-2012 Water quality. Determination of total nitrogen. Alkaline potassium persulfate digestion UV spectrophotometric method

Professional Standard - Water Conservancy

SL 84-1994 Determination of nitrogen(nitrate) (Ultraviolet spectrophtometric method)

Professional Standard - Non-ferrous Metal

YS/T 74.7-1994 Cadmium Chemical Analysis Method 1,10-Phenanthroline Spectrophotometric Determination of Iron Content
YS/T 535.4-2009 Chemical analysis methods of sodium fluoride—Part 4:Determination of iron content—1,10-phenanthroline spectrophotometric method
YS/T 372.19-2006 Method for elementary analysis of precious alloy—Determination of yttrium content—Chlorophosphonazo Ⅲ spectrophotometry
YS/T 372.18-2006 Method for elementary analysis of precious alloy - Determination of gadolinium content - Chlorophosphonazo Ⅲ spectrophotometry
YS/T 74.7-2010 Methods for chemical analysis of cadmium—Part 7:Determination of iron content—1,10-Phenanthroline spectrophotometry
YS/T 536.2-2006 Bismuth Chemical Analysis Method 1,10-Phenanthroline Spectrophotometric Determination of Iron Content
YS/T 575.14-2006 Methods for chemical analysis of bauxite -- Determination the total content of rare earth oxide -- Tribromo-arsenazo photometric method

中华人民共和国环境保护部

GB 7493-1987 Water quality-Determination of nitrogen (nitrite)-Spectrophotometric method
GB 11893-1989 Water quality-Determination of total phosphorus-Ammonium molybdate spectrophotometric method
GB 7480-1987 Water quality-Determination of nitrate-Spectrophotometric method with phenol disulfonic acid

Professional Standard - Geology

DZ/T 0064.57-2021 Methods for analysis of groundwater quality- Part 57: Determination of ammonia nitrogen- Nessler's reagent spectrophotometry
DZ/T 0064.23-1993 Groundwater quality test methods - the determination of iron with naphthisodiazine spectrophotometric determination
DZ/T 0064.23-2021 Methods for analysis of groundwater quality- Part 23: Determination of iron content - Phenanthrolion spectrophotometry

Professional Standard - Aviation

HB 5220.42-1995 Determination of Cerium Content by DBC-Arsenazo Absorption Spectrophotometry Method for Chemical Analysis of Superalloys
HB 5297.17-2001 Methods for Chemical Analysis of Titanium Alloys - Determination of Zirconium Content by Arsenazo iii Photometric Method
HB 5220.43-1995 Determination of Lanthanum Content by DBC-Arsenazo Absorption Spectrophotometry Method for Chemical Analysis of Superalloys
HB 5422.23-1989 Chemical Analysis Methods for Copper Alloy - Arsenazo III Absorption Photometry for the Determination of Zirconium Content
HB 5297.20-2001 Methods for Chemical Analysis of Titanium Alloys - Determination of Cerium Content by Chlorophosphonazo III Spectrophotometric Method
HB/Z 5218.14-2004 Methods for chemical analysis of aluminium alloys-Part 14:Determination of the cerium subgroup of rare earth elements content by tribromoarsenazo spectrophtometric method
HB 5220.39-1995 Chemical Analysis Method of Superalloys PMBP Direct Extraction-ArsenazoⅢ Absorbance Spectrophotometry Determination of Total Rare Earth
HB 5220.39-2008 Methods for Chemical Analysis of Superalloys - Part 39: Determination of Total Rare Earth Content by Pmbp Direct Extraction-Arsenazo III Photometric Method
HB 5218.14-1995 Aluminum Alloy Chemical Analysis Method Tribromoarsine Spectrophotometric Determination of Total Rare Earth in Cerium Group

Tianjin Provincial Standard of the People's Republic of China

DB12/T 847-2018 Spectrophotometric method for the determination of total sugar in feed

国家市场监督管理总局、中国国家标准化管理委员会

GB/T 24583.5-2019 Vanadium-nitrogen—Determination of phosphorus content—Bismuth molybdenum blue spectrophotometric method
GB/T 6437-2018 Determination of phosphorus in feeds—Spectrophotometry

Professional Standard - Agriculture

GB 6260-1986 Determination of rare earth oxide content in soil--Chlorophosphonazo-p-hippuric acid photometric method
NY/T 2332-2013 Determination of total sugars in red ginseng—Spectrophotometry
NY/T 1116-2006 Fertilizers - Determination of nitrate nitrogen content - Ultraviolet spectro - Photometric method
SN/T 5658.3-2023 Quality identification methods for spiritsPart 3 :Determination of total polyphenol in spiritsSpectrophotometric method
HJ 199-2023 Water quality―Determination of total nitrogen ―Gas-phase molecular absorption spectrometry
NY/T 30-1986 Determination of rare earth oxide content in soil - Chlorophonazo - P - Hippuric acid photometric method

Professional Standard - Urban Construction

CJ 26.13-1991 Municipal sewage water quality test method Determination of standard aniline Azo spectrophotometric method
CJ 26.26-1991 Municipal sewage water quality inspection method standard Determination of nitrite nitrogen spectrophotometric method
CJ/T 78-1999 Municipal sewage.Determination of total phosphorus.Spectrophotometric method
CJ/T 76-1999 Municipal sewage.Determination of nitrogen(nitrite).Sepectrophotometric method
CJ 26.28-1991 Municipal sewage water quality inspection method standard Determination of total phosphorus spectrophotometric method
CJ/T 63-1999 Municipal sewage.Determination of aniline compounds.AZO spectrophotometric method

Hunan Provincial Standard of the People's Republic of China

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

工业和信息化部

YB/T 4582.3-2017 Ferrosilicon nitride-Determination of phosphorus content-Bismuth phosphomolybdate blue spectrophotometric method
YB/T 4582.6-2017 Ferrosilicon nitride-Determination of manganese content-Sodium periodate spectrophotometric method
YB/T 5157-2016 Determination of iron in graphite products of high purity by ortho-Phenathroline spectrophotometric method
YB/T 4566.6-2016 Ferrovanadium nitride. Determination of phosphorus content. Molybdobismuthylphosphoric blue spectrophotometric method
YS/T 540.4-2018 Methods for chemical analysis of vanadium- Part 4:Determination of iron content- 1, 10-phenanthroline spectrophotometry

Professional Standard - Rare Earth

XB/T 601.7-1993 Lanthanum hexaboride chemical analysis method 1,10-phenanthrene-phenanthrene spectrophotometric determination of iron content

Professional Standard - Ferrous Metallurgy

YB/T 5330-2006 Methods for chemical analysis of vanadium pentoxide The ortho-phenanthroline spectrophotometric method for the determination iron content

Professional Standard - Nuclear Industry

EJ/T 20172-2018 Determination of Nitrogen in Sodium Cooled Fast Neutron Breeder Reactor by Spectrophotometry

Hebei Provincial Standard of the People's Republic of China

DB13/T 2499.3-2017 Determination methods for liquid mixtures: Part 3: Determination of total phosphorus (ammonium molybdate spectrophotometric method)

Professional Standard - Chemical Industry

HG/T 4327-2012 Reclaimed water—Determination of total iron content—Spectrophotometric method

Association Francaise de Normalisation

NF A06-555:2010 Steel - Determination of nitrogen content - Spectrophotometric method.
NF A06-555*NF EN ISO 4945:2018 Steel - Determination of nitrogen - Spectrophotometric method
NF T20-286:1982 Nitric acid for industrial use. Determination of ammoniacal nitrogen content. Spectrophotometric method.
NF T90-080:1997 Water quality - Determination of ammonium nitrogen by flow analysis (CFA and FIA) and spectrometric detection.
NF V18-106*NF ISO 6491:2011 Animal feeding stuffs - Determination of phosphorus content - Spectrophotometric method
NF V18-106:1980 Animal feeding stuffs. Determination of total phosphorus content. Spectrophotometric method.

British Standards Institution (BSI)

BS EN ISO 4945:2018 Steel. Determination of nitrogen. Spectrophotometric method
BS EN ISO 4945:2009 Steel - Determination of nitrogen content - Spectrophotometric method
BS EN ISO 4945:2010 Steel. Determination of nitrogen content. Spectrophotometric method
23/30472739 DC BS EN 10179. Steels. Determination of nitrogen (trace amounts). Spectrophotometric method
BS EN 62805-1:2017 Method for measuring photovoltaic (PV) glass - Measurement of total haze and spectral distribution of haze
BS 6200-3.22.3:1986 Sampling and analysis of iron, steel and other ferrous metals. Methods of analysis. Determination of nitrogen. Steel: spectrophotometric method (for trace amounts)

Spanish Association for Standardization (UNE)

UNE-EN ISO 4945:2019 Steel - Determination of nitrogen - Spectrophotometric method (ISO 4945:2018)
UNE 36317-1:1985 DETERMINATION OF NITROGEN CONTENT OF STEELS. SPECTROPHOTOMETRIC METHOD
UNE-EN ISO 4945:2010 Steel - Determination of nitrogen content - Spectrophotometric method (ISO 4945:1977)
UNE 36-317 Pt.1-1985 Determination of nitrogen in steel. Spectrophotometry

German Institute for Standardization

DIN EN ISO 4945:2019-03 Steel - Determination of nitrogen - Spectrophotometric method (ISO 4945:2018); German version EN ISO 4945:2018
DIN EN 10179:2023-07 Steels - Determination of nitrogen (trace amounts) - Spectrophotometric method; German and English version prEN 10179:2023 / Note: Date of issue 2023-05-26*Intended as replacement for DIN EN 10179 (1990-04).
DIN EN ISO 4945:2010 Steel - Determination of nitrogen content - Spectrophotometric method (ISO 4945:1977); German version EN ISO 4945:2009
DIN EN ISO 4945 E:2018-01 Determination of steel nitrogen by spectrophotometry (draft)
DIN EN ISO 4945:2019 Steel - Determination of nitrogen - Spectrophotometric method (ISO 4945:2018)
DIN EN ISO 5378:1994-10 Starches and derived products - Determination of nitrogen content by the Kjeldahl method - Spectrophotometric method (ISO 5378:1978); German version EN ISO 5378:1994

KR-KS

KS D ISO 4945-2022 Steel — Determination of nitrogen — Spectrophotometric method
KS I ISO 6332-2021 Water quality ― Determination of iron —Spectrometric method using 1,10-phenanthroline
KS H ISO 5378-2008(2023) Starches and derived products－Determination of nitrogen content by the Kjeldahl method－Spectrophotometric method

RO-ASRO

STAS SR 13348-1-1996 Tea. Analysis methods. Determination of proteic nitrogen by the Kjeldahl method. Spectrophotometric method
STAS SR 13257-1996 COFFEE Determination of nitrogen content by the Kjeldahi method Spectrophotometric method

CZ-CSN

CSN 65 1025 Cast.10-1989 Sulphuric acid for industrial use. pectrophotometric method for the etermination of total nitrogen xides
CSN 42 0691 Cast.2-1985 Chemical analysis of non-ferrous metals and alloys. Titanium. Determination of nitrogen by the photometric method and titrimetric method
CSN ISO 6332:1995 Water quality - Determination of iron - Spectrometric method using 1,10-phenantroline

CEN - European Committee for Standardization

EN ISO 4945:2018 Steel - Determination of nitrogen - Spectrophotometric method

International Organization for Standardization (ISO)

ISO 4945:1977 Steel; Determination of nitrogen content; Spectrophotometric method
ISO 4945:2018 Steel - Determination of nitrogen - Spectrophotometric method
ISO 2991:1974 Nitric acid for industrial use; Determination of ammoniacal nitrogen content; Spectrophotometric method
ISO 6332:1982 Water analysis — Determination of iron — 1,10-phenanthroline photometric method
ISO 6491:1980 Animal feeding stuffs; Determination of total phosphorus content; Spectrophotometric method

European Committee for Standardization (CEN)

EN ISO 4945:2009 Steel - Determination of nitrogen content - Spectrophotometric method (ISO 4945:1977)

GSO

OS GSO ISO 4945:2015 Steel -- Determination of nitrogen content -- Spectrophotometric method
GSO ISO 5378:2015 Starches and derived products -- Determination of nitrogen content by the Kjeldahl method -- Spectrophotometric method
GSO ISO 6491:2005 ANIMAL FEEDING STUFFS – DETERMINATION OF TOTAL PHOSPHORUS CONTENT – SPECTROPHOTOMETRIC METHOD
NB/T 11531-2024 Determination of total phosphorus, ammonia nitrogen and permanganate index in coal mine water - Flow injection-spectrophotometry
GSO IEC 62805-1:2021 Method for measuring photovoltaic (PV) glass - Part 1: Measurement of total haze and spectral distribution of haze
OS GSO ISO 6491:2005 ANIMAL FEEDING STUFFS – DETERMINATION OF TOTAL PHOSPHORUS CONTENT – SPECTROPHOTOMETRIC METHOD

Danish Standards Foundation

DS/EN ISO 4945:2009 Steel - Determination of nitrogen content - Spectrophotometric method
DS/EN ISO 5378:1995 Starches and derived products - Determination of nitrogen content by the Kjeldahl method - Spectrophometric method

SCC

DANSK DS/EN ISO 4945:2009 Steel – Determination of nitrogen content – Spectrophotometric method
NS-EN ISO 4945:2018 Steel - Determination of nitrogen - Spectrophotometric method (ISO 4945:2018)
NS-EN 10179:2024 Steels - Determination of nitrogen (trace amounts) - Spectrophotometric method
NS-EN ISO 4945:2009 Steel — Determination of nitrogen content — Spectrophotometric method (ISO 4945:1977)
DIN EN 10179 E:2023 Draft Document - Steels - Determination of nitrogen (trace amounts) - Spectrophotometric method; German and English version prEN 10179:2023
AENOR UNE-EN ISO 4945:2010 Steel - Determination of nitrogen content - Spectrophotometric method (ISO 4945:1977)
BS 5766-3:1981 Methods for analysis of animal feeding stuffs-Determination of total phosphorus content (spectrophotometric method)
BS 5697-2:1979 Methods of test for starch and its derivatives and by-products. Determination of nitrogen conteny by the Kjeldahl method ( spectrophotometric method)
SPC GB/T 24583.5-2019 Vanadium-nitrogen -- Determination of phosphorus content -- Bismuth molybdenum blue spectrophotometric method (TEXT OF DOCUMENT IS IN CHINESE)
DIN EN ISO 4945 E:2018 Draft Document - Steel - Determination of nitrogen - Spectrophotometric method (ISO/DIS 4945:2017); German and English version prEN ISO 4945:2017
DANSK DS/EN ISO 5378:1994 Starches and derived products - Determination of nitrogen content by the Kjeldahl method - Spectrophometric method
BS 6200-3.22.2:1985 Sampling and analysis of iron, steel and other ferrous metals. Methods of analysis. Determination of nitrogen-Steel: spectrophotometric method
NS-EN ISO 5378:1994 Starches and derived products — Determination of nitrogen content by the Kjeldahl method — Spectrophotometric method (ISO 5378:1978)

BSI

BS EN 10179:2024 Steels. Determination of nitrogen (trace amounts). Spectrophotometric method

Korean Agency for Technology and Standards (KATS)

KS D ISO 4945:2002 Steel－Determination of nitrogen content－Spectrophotometric method
KS D ISO 4945-2002(2017) Steel－Determination of nitrogen content－Spectrophotometric method
KS H ISO 5378-2008(2018) Starches and derived products－Determination of nitrogen content by the Kjeldahl method－Spectrophotometric method
KS H ISO 5378-2023 Starches and derived products－Determination of nitrogen content by the Kjeldahl method－Spectrophotometric method
KS I ISO 6332:2021 Water quality ― Determination of iron —Spectrometric method using 1,10-phenanthroline
KS D ISO 1812-2002(2022) Copper alloys－Determination of iron content－1,10-Phenanthroline spectrophotometric method
KS D ISO 1812-2002(2017) Copper alloys－Determination of iron content－1,10-Phenanthroline spectrophotometric method
KS E ISO 6607-2011(2016) Aluminium ores－Determination of total silicon content－Combined gravimetric and spectrophotometric method

TR-TSE

TS 3651-1981 METHODS FOR THE ANALYSIS OF WATER — DETERMINATION OF IRON CONTENT — 1,10 Phenanthroline Spectrophotometry Method
TS 2466-1976 Nitric Acit For Industrial Use Determination of Ammoniacal Nitrogen Content Spectrophotoraetric Method

Lithuanian Standards Office

LST EN ISO 4945:2010 Steel - Determination of nitrogen content - Spectrophotometric method (ISO 4945:1977)

American Society for Testing and Materials (ASTM)

ASTM UOP276-85 Pyrrole Nitrogen in Petroleum Distillates by Visible Spectrophotometry

YU-JUS

JUS H.B8.287-1983 Fertilizers. Determination of content amid-nitrogen. Spectrophotometric method
JUS C.A1.049-1989 Methods for chemical analysis of iron and steel. Determination of total silicon content between 0,05 and 1,0 %. Spectrophotometric method
JUS H.B8.637-1981 Sulphuric acid for industrial use. Determination of ammoniacal nitrogen content. Spectrophotometric method

Illuminating Engineering Society of North America

IESNA LM-78-2007 Method for Total Luminous Flux Measurement of Lamps Using an Integrating Sphere Photometer

RU-GOST R

GOST 31980-2012 Milk. Spectrometric method for determination of total phosphorus content

BE-NBN

NBN T 91-257-1977 Water analysis methods - Determination of the nitrite nitrogen - Photoraetric method
NBN T 03-041-1979 Nitric acid for industrial use - Determination of ammoniacal nitrogen content - Spectrophotometric method

NL-NEN

NEN 2848-1986 Fruit juices - Determination of the total pectin content - Spectrophotometric method

IT-UNI

UNI 7336-1974 Chemical analysis of ferrous materials. Determination of nitrogen in steel. Spectrophotometric method.

SE-SIS

SIS SS 02 81 86-1985 Determination of total arsenic in water - Silver diethyldithiocarbamate spectrometric method

International Electrotechnical Commission (IEC)

IEC 62805-1:2017 Method for measuring photovoltaic (PV) glass - Part 1: Measurement of total haze and spectral distribution of haze

European Committee for Electrotechnical Standardization（CENELEC）

EN 62805-1:2017 Method for measuring photovoltaic (PV) glass - Part 1: Measurement of total haze and spectral distribution of haze

Japanese Industrial Standards Committee (JISC)

JIS G 1228-2:2022 Iron and steel -- Determination of nitrogen -- Part 2: Spectrophotometric methods after ammonium distillation separation

Others: The method of measuring total nitrogen,Total Nitrogen Determination Method UV Spectrophotometry,Determination method of total nitrogen by spectrophotometry,Determination method of total nitrogen