hydrochloric acid nitric acid digestion

hydrochloric acid nitric acid digestion, Total:200 items.

The international standard classification for "hydrochloric acid nitric acid digestion" includes: Milk and processed milk products , food products in general , Fruits. Vegetables , Surface active agents , General methods of tests and analysis for food products .

The Chinese standard classification for "hydrochloric acid nitric acid digestion" includes: Children foods , Food sanitation , Chemical reagent in general , Boiler and its auxiliary equipment , Basic standards and general methods , Tooth paste, soap and detergent , Basic standards and general methods .

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

GB/T 6912.1-2006 Methods for analysis of water for boiler and for cooling determination of nitrates and nitrites - Part 1: Ultraviolet spectrophotometry for nitrates
GB/T 13580.5-1992 Determination of fluoride, chloride, ntrite, nitrate, salfate in the wet precipitation - Ion chromotography
GB/T 5413.32-1997 Milk powder-Determination of nitrate and nitrite contents
GB 6912.1-1986 Determination of nitrate and nitrite - Nitrate UV photometric method
GB/T 5009.33-1996 Method for determination of nitrite and nitrate in foods
GB/T 5009.33-2003 Determination of nitrite and nitrate in foods
GB/T 6912.3-1986 Methods for analysis of water for boiler and for cooling; The determination of nitrates and nitrites; Alpha-naphthylamine hydrochloride photometric method
GB/T 5009.33-2008 Determination of nitrite and nitrate in foods
GB/T 44998-2024 Determination of nitrates and nitrites in surfactants—Ion chromatography method
GB 6912.2-1986 Determination of nitrate and nitrite - Nitrite UV photometric method
GB/T 6912.1-1986 Methods for analysis of water for boiler and for cooling; The determination of nitrates and nitrites; Ultraviolet spectrophotometry for nitrates
GB 5009.33-2025 National Food Safety Standard: Determination of Nitrite and Nitrate in Food
GB/T 15401-1994 Fruits, vegetables and derived products--Determination of nitrite and nitrate content
GB/T 6912.2-1986 Methods for analysis of water for boiler and for cooling--The determination of nitrates and nitrites--Ultraviolet spectrophotometry for nitrites
GB 6912.3-1986 Determination of nitrate and nitrite a-naphthylamine hydrochloride spectrophotometric method

Professional Standard - Environmental Protection

HJ 677-2013 Water quality - Digestion of total metals - Nitric acid digestion method

Group Standards of the People's Republic of China

T/LNIQA 019-2024 Determination of fluoride, chloride, nitrate, nitrite, sulfate, bromate and phosphate content in drinking natural mineral water - ion chromatography
T/SATA 053-2023 Determination of bromate, nitrite, chlorate, nitrate and thiocyanate in infant formula - Ion Chromatography
T/CPCIF 0168-2021 Rapid detection kits for nitrite，nitrate and ammonia nitrogen in water

Taiwan Provincial Standard of the People's Republic of China

CNS 12980-2007 Method of test for milk and milk products - Determination of nitrate and nitrite content in edible cheese
CNS 1602-1962 Bismuth Subnitrate (Basic Bismuth Nitrate, Bismuth Oxynitrate)
CNS 12980-1992 Method of Test for Milk and Milk Products - Determination of Nitrate and Nitrite Contents of Edible Cheese

Ministry of Ecology and Environment of the People's Replublic of China

GB 13580.5-1992 Determination of fluoride,chloride,ntrite nitrate,salfate in the wet precipitation-Ion chromotography

Professional Standard - Commodity Inspection

SN/T 3151-2012 Determination of nitrate and nitrite in food for export-Ion chromatography

National Health Commission of the People's Republic of China

GB 5009.33-2016 National food safety standard-Determination of nitrite and nitrate in foods
GB 5009.33-2010 Determination of nitrite and nitrate in foods

Professional Standard - Agriculture

NY/T 1375-2007 Determination of Nitrite and Nitrate in Plant Products Ion Chromatography Method

Czech Standards Institute (UNMZ)

CSN 65 4102-1984 Tempenng hitrate and nitrite salts
CSN 57 0158-1986 Testing methods for meat products and canned sterilized food. Determination of nitrite and nitrate content
CSN 68 4132-1985 Determination of small mouts of nitrites

European Committee for Standardization (CEN)

DD ENV 12014-3-1998 Foodstuffs - Determination of Nitrate and/or Nitrite Content - Part 3: Spectrometric Determination of Nitrate and Nitrite Content of Meat Products After Enzymatic Reduction of Nitrate to Nitrite
EN 12014-3:2005 Foodstuffs - Determination of nitrate and/or nitrite content - Part 3: Spectrometric determination of nitrate and nitrite content of meat products after enzymatic reduction of nitrate to nitrite
EN ISO 10304-1:2009/AC:2012 Water quality - Determination of dissolved anions by liquid chromatography of ions - Part 1: Determination of bromide, chloride, fluoride, nitrate, nitrite, phosphate and sulfate - Technical Corrigendum 1 (ISO 10304-1:2007/Cor 1:2010)
EN ISO 10304-1:2009 Water quality - Determination of dissolved anions by liquid chromatography of ions - Part 1: Determination of bromide, chloride, fluoride, nitrate, nitrite, phosphate and sulfate (ISO 10304-1:2007)
EN 12014-4:2005 Foodstuffs - Determination of nitrate and/or nitrite content - Part 4: Ion-exchange chromatographic (IC) method for the determination of nitrate and nitrite content of meat products

South African Bureau of Standard

SANS 5210:2010 Water - Nitrate and nitrite content
SANS 5210:2006 Water - Nitrate and nitrite content

British Standards Institution (BSI)

BS EN 12014-3:2005 Foodstuffs - Determination of nitrate and/or nitrite content - Spectrometric determination of nitrate and nitrite content of meat products after enzymatic reduction of nitrate to nitrite
BS DD ENV 12014-3:1998 Foodstuffs. Determination of nitrate and/or nitrite content-Spectrometric determination of nitrate and nitrite content of meat products after enzymatic reduction of nitrate to nitrite
06/30126102 DC ISO 10304. Water quality. Determination of dissolved bromide, chloride, fluoride, nitrate, nitrite, phosphate and sulfate. Method by liquid chromatography of ions
BS DD ENV 12014-4:1998 Foodstuffs. Determination of nitrate and/or nitrite content-Ion-exchange chromatographic (IC) method for the determination of nitrate and nitrite content of meat products
BS EN 12014-4:2005 Foodstuffs - Determination of nitrate and/or nitrite content - Ion-exchange chromatographic (IC) method for the determination of nitrate and nitrite content of meat products
BS 6248-11:1987 Caseins and caseinates. Method for determination of nitrate and nitrite contents
DD ENV 12014-4-1998 Foodstuffs. Determination of nitrate and/or nitrite content. Ion-exchange chromatographic (IC) method for the determination of nitrate and nitrite content of meat products
BS EN 12014-1:1997(2000) Foodstuffs - Determination of nitrate and/or nitrite content - General considerations
BS EN 12014-1:1997 Foodstuffs - Determination of nitrate and/or nitrite content - General considerations
BS EN ISO 10304-2:1997(1998)*BS 6068-2.53:1997 Water quality — Determination of dissolved anions by liquid chromatography of ions — Part 2 : Determination of bromide, chloride, nitrate, nitrite, orthophosphate and sulfate in waste water
BS 2690-7:1968 Methods of testing water used in industry-Nitrite, nitrate and ammonia (free, saline and albuminoid)
BS EN 12014-5:1997 Foodstuffs - Determination of nitrate and/or nitrite content - Enzymatic determination of nitrate content of vegetable-containing food for babies and infants
BS EN 12014-2:1997 Foodstuffs - Determination of nitrate and/or nitrite content - HPLC/IC method for the determination of nitrate content of vegetables and vegetable products
BS ISO 15923-1:2013 Water quality. Determination of selected parameters by discrete analysis systems. Ammonium, nitrate, nitrite, chloride, orthophosphate, sulfate and silicate with photometric detection
BS EN ISO 10304-1:2009 Water quality. Determination of dissolved anions by liquid chromatography of ions. Determination of bromide, chloride, fluoride, nitrate, nitrite, phosphate and sulfate
BS 4267-7:1987 Ammonium nitrate - Methods for determination of nitrite content
BS EN ISO 15923-1:2024 Water quality. Determination of selected parameters by discrete analysis systems - Ammonium, nitrate, nitrite, chloride, orthophosphate, sulfate and silicate with photometric detection

Danish Standards Foundation

DS/EN 12014-3:2005 Foodstuffs – Determination of nitrate and/or nitrite content – Part 3: Spectrometric determination of nitrate and nitrite content of meat products after enzymatic reduction of nitrate to nitrite
DANSK DS/EN 12014-3:2005 Foodstuffs - Determination of nitrate and/or nitrite content - Part 3: Spectrometric determination of nitrate and nitrite content of meat products after enzymatic reduction of nitrate to nitrite
DS 223:1991 Water analysis. Determination of the sum of nitrite- and nitrate-nitrogen
DANSK DS/EN ISO 10304-1:2009 Water quality - Determination of dissolved anions by liquid chromatography of ions - Part 1: Determination of bromide, chloride, fluoride, nitrate, nitrite, phosphate and sulfate
DS/EN ISO 10304-1:2009 Water quality - Determination of dissolved anions by liquid chromatography of ions - Part 1: Determination of bromide, chloride, fluoride, nitrate, nitrite, phosphate and sulfate
DS/EN 13656:2003 Characterization of waste - Microwave assisted digestion with hydrofluoric (HF), nitric (HNO3) and hydrochloric (HCl) acid mixture for subsequent determination of elements
DS/EN 12014-4:2005 Foodstuffs – Determination of nitrate and/or nitrite content – Part 4: Ion-exchange chromatographic (IC) method for the determination of nitrate and nitrite content of meat products
DANSK DS/EN 12014-4:2005 Foodstuffs - Determination of nitrate and/or nitrite content - Part 4: Ion-exchange chromatographic (IC) method for the determination of nitrate and nitrite content of meat products
DS 230:1988 Water quality. Nitrate- + nitrite-nitrogen. Reduction by Devardas alloy

Lithuanian Standards Office

LST EN 12014-3-2005 Foodstuffs - Determination of nitrate and/or nitrite content - Part 3: Spectrometric determination of nitrate and nitrite content of meat products after enzymatic reduction of nitrate to nitrite
LST EN 13656-2003 Characterization of waste - Microwave assisted digestion with hydrofluoric (HF), nitric (HNO3) and hydrochloric (HCl) acid mixture for subsequent determination of elements
LST EN 12014-4-2005 Foodstuffs - Determination of nitrate and/or nitrite content - Part 4: Ion-exchange chromatographic (IC) method for the determination of nitrate and nitrite content of meat products
LST EN ISO 10304-1:2009 Water quality - Determination of dissolved anions by liquid chromatography of ions - Part 1: Determination of bromide, chloride, fluoride, nitrate, nitrite, phosphate and sulfate (ISO 10304-1:2007)

Spanish Association for Standardization (UNE)

UNE-EN 12014-3:2006 Foodstuffs - Determination of nitrate and/or nitrite content - Part 3: Spectrometric determination of nitrate and nitrite content of meat products after enzymatic reduction of nitrate to nitrite
UNE-EN 13656:2003 Characterization of waste - Microwave assisted digestion with hydrofluoric (HF), nitric (HNO3) and hydrochloric (HCl) acid mixture for subsequent determination of elements
UNE-EN 12014-4:2006 Foodstuffs - Determination of nitrate and/or nitrite content - Part 4: Ion-exchange chromatographic (IC) method for the determination of nitrate and nitrite content of meat products
UNE-EN ISO 10304-1:2009 Water quality - Determination of dissolved anions by liquid chromatography of ions - Part 1: Determination of bromide, chloride, fluoride, nitrate, nitrite, phosphate and sulfate (ISO 10304-1:2007)
UNE-EN ISO 10304-2:1997 WATER QUALITY. DETERMINATION OF DISSOLVED ANIONS BY LIQUID CHROMATOGRAPHY OF IONS. PART 2: DETERMINATION OF BROMIDE, CHLORIDE, NITRATE, NITRITE, ORTHOPHOSPHATE AND SULFATE IN WASTE WATER. (ISO 10304-2:1995).

Association Francaise de Normalisation

NF EN 12014-3:2005 Food products - Determination of the nitrate and/or nitrite content - Part 3: spectrometric determination of the nitrate and nitrite content of meat products after enzymatic reduction of nitrates to nitrites
NF V03-010-3*NF EN 12014-3:2005 Foodstuffs - Determination of nitrate and/or nitrite content - Part 3 : spectrometric determination of nitrate and nitrite content of meat products after enzymatic reduction of nitrate to nitrite
NF V03-010-3:1998 Foodstuffs. Determination of nitrate and/or nitrite content. Part 3 : spectrometric determination of nitrate and nitrite content of meat products after enzymatic reduction of nitrate to nitrite.
NF T30-047:1971 DETERMINATION OF WATER-SOLUBLE SALTS (SULPHATES,CHLORIDES,NITRATES) IN PIGMENTS.
NF T90-042-1*NF EN ISO 10304-1:2009 Water quality - Determination of dissolved anions by liquid chromatography of ions - Part 1 : determination of bromide, chloride, fluoride, nitrate, nitrite, phosphate and sulfate.
NF EN 12014-4:2005 Food products - Determination of the nitrate and/or nitrite content - Part 4: determination by ion chromatography (IC) of the nitrate and nitrite content in meat products
NF EN ISO 10304-1:2009 Water quality - Determination of dissolved anions by liquid ion chromatography - Part 1: determination of bromide, chloride, fluoride, nitrate, nitrite, phosphate and sulfate
NF V03-010-4*NF EN 12014-4:2005 Foodstuffs - Determination of nitrate and/or nitrite content - Part 4 : ion-exchange chromatographic (IC) method for the determination of nitrate and nitrite content of meat products
NF V05-121:1979 Fruits, vegetables and derived products - Determination of nitrite and nitrate contents
NF T90-046:1996 Water quality - Determination of dissolved anions by liquid chromatography of ions - Part 2 : determination of bromide, chloride, nitrate, nitite, orthophosphate and sulfate in waste water.
NF T20-262:1968 Chemical analysis of hydrochloric and nitric acids. Determination of sulphated ash.
NF EN ISO 15587-2:2002 Water quality - Digestion for the determination of certain elements in water - Part 2: nitric acid digestion
NF V03-010-4:1998 Foodstuffs. Determination of nitrate and/or nitrite content. Part 4 : ion-exchange chromatographic (IC) method for the determination of nitrate and nitrite content of meat products.
NF V04-292:1986 Dried whey. Determination of nitrate and nitrite contents. Method by cadmium reduction and spectrometry.

Standards Norway

NS-EN 12014-3:2005 Foodstuffs — Determination of nitrate and/or nitrite content — Part 3: Spectrometric determination of nitrate and nitrite content of meat products after enzymatic reduction of nitrate to nitrite
NS 4745:1991 Water analysis - Determination of the sum of nitrite nitrogen and nitrate nitrogen
NS 4745-1991 Water analysis - Determination of the sum of nitrite nitrogen and nitrate nitrogen
NS-EN 12014-4:2005 Foodstuffs — Determination of nitrate and/or nitrite content — Part 4: Ion-exchange chromatographic (IC) method for the determination of nitrate and nitrite content of meat products
NS-EN ISO 10304-1:2009 Water quality — Determination of dissolved anions by liquid chromatography of ions — Part 1: Determination of bromide, chloride, fluoride, nitrate, nitrite, phosphate and sulfate (ISO 10304-1:2007)
NS-EN 13656:2002 Characterization of waste — Microwave assisted digestion with hydrofluoric (HF), nitric (HNO3) and hydrochloric (HCl) acid mixture for subsequent determination of elements
NS 4865-1983 Air quality - Determination of the sum of nitrite- and nitrate-nitrogen in precipitation
NS-EN ISO 10304-2:1996 Water quality — Determination of dissolved anions by liquid chromatography of ions — Part 2: Determination of bromide, chloride, nitrate, nitrite, orthophosphate and sulfate in waste water (ISO 10304-2:1995)
NS 4865:1983 Air quality — Determination of the sum of nitrite- and nitrate-nitrogen in precipitation

Swedish Institute for Standards

SS-EN 12014-3:2005 Foodstuffs - Determination of nitrate and/or nitrite content - Part 3: Spectrometric determination of nitrate and nitrite content of meat products after enzymatic reduction of nitrate to nitrite
SS-EN ISO 10304-1:2009 Water quality - Determination of dissolved anions by liquid chromatography of ions - Part 1: Determination of bromide, chloride, fluoride, nitrate, nitrite, phosphate and sulfate (ISO 10304-1:2007)
SS-EN 12014-4:2005 Foodstuffs - Determination of nitrate and/or nitrite content - Part 4: Ion-exchange chromatographic (IC) method for the determination of nitrate and nitrite content of meat products
SS 28133:1991 Determination of the sum of the nitrite and nitrate nitrogen content of water
SS-EN ISO 10304-2:1997 Water quality - Determination of dissolved anionsby liquid chromatography of ions - Part 2: Determination of bromide, chloride, nitrate, nitrite, ortophospate and sulfate in waste water (ISO 10304-2:1995)
SS-EN 13656:2003 Characterization of waste - Microwave assisted digestion with hydrofluoric (HF), nitric (HNO3) and hydrochloric (HCl) acid mixture for subsequent determination of elements
SIS SS 02 81 33-1991 Determination of the sum of the nitrite and nitrate nitrogen content of water
SS-ISO 16729:2025 Soil quality — Digestion of nitric acid soluble fractions of elements (ISO 16729:2013, IDT)

Ente Nazionale Italiano di Unificazione

UNI ENV 12014-3:1998 Foodstuffs - Determination of nitrate and/or nitrite content - Spectrometric determination of nitrate and nitrite content of meat products after enzymatic reduction of nitrate to nitrite
UNI EN 12014-3:2005 Foodstuffs - Determination of nitrate and/or nitrite content - Part 3: Spectrometric determination of nitrate and nitrite content of meat products after enzymatic reduction of nitrate to nitrite
UNI EN ISO 11905-1:2001 Water quality - Determination of nitrogen - Method using oxidative digestion with peroxodisulfate
UNI EN ISO 10304-2:2000 Water quality - Determination of dissolved anions by liquid chromatography of ions - Determination of bromide, chloride, nitrate, nitrite, orthophosphate and sulfate in waste water
UNI ENV 12014-4:1998 Foodstuffs - Determination of nitrate and/or nitrite content - Ion-exchange chromatographic (IC) method for the determination of nitrate and nitrite content of meat products
UNI EN 12014-4:2005 Foodstuffs - Determination of nitrate and/or nitrite content - Part 4: Ion- exchange chromatographic (IC) method for the determination of nitrate and nitrite content of meat products
UNI EN ISO 15587-2:2002 Water quality - Digestion for the determination of selected elements in water - Nitric acid digestion
UNI EN 12014-5:1998 Foodstuffs - Determination of nitrate and/or nitrite content - Enzymatic determination of nitrate content of vegetable-containing food for babies and infants.
UNI EN 12014-2:1998 Foodstuffs - Determination of nitrate and/or nitrite content - HPLC/IC method for the determination of nitrate content of vegetables and vegetable products.

German Institute for Standardization

DIN EN 12014-3:2005-08 Foodstuffs - Determination of nitrate and/or nitrite content - Part 3: Spectrometric determination of nitrate and nitrite content of meat products after enzymatic reduction of nitrate to nitrite; German version EN 12014-3:2005
DIN EN 12014-3:2005 Foodstuffs - Determination of nitrate and/or nitrite content - Part 3: Spectrometric determination of nitrate and nitrite content of meat products after enzymatic reduction of nitrate to nitrite; German version EN 12014-3:2005
DIN EN ISO 10304-1:1995 Water quality - Determination of dissolved anions by liquid chromatography of ions - Part 1: Determination of bromide, chloride, fluoride, nitrate, nitrite, phosphate and sulfate
DIN EN 12014-4:2005 Foodstuffs - Determination of nitrate and/or nitrite content - Part 4: Ion-exchange chromatographic (IC) method for the determination of nitrate and nitrite content of meat products; German version EN 12014-4:2005
DIN EN ISO 10304-1:2009-07 Water quality - Determination of dissolved anions by liquid chromatography of ions - Part 1: Determination of bromide, chloride, fluoride, nitrate, nitrite, phosphate and sulfate (ISO 10304-1:2007); German version EN ISO 10304-1:2009
DIN EN 12014-4:2005-08 Foodstuffs - Determination of nitrate and/or nitrite content - Part 4: Ion-exchange chromatographic (IC) method for the determination of nitrate and nitrite content of meat products; German version EN 12014-4:2005
DIN EN ISO 15587-2:2002-07 Water quality - Digestion for the determination of elements in water - Part 2: Nitric acid digestion (ISO 15587-2:2002); German version EN ISO 15587-2:2002
DIN EN ISO 10304-1:1995-04 Determination of dissolved fluoride, chloride, nitrite, orthophosphate, bromide, nitrate and sulfate ions in water, using liquid chromatography of ions - Method for water with low contamination (ISO 10304-1:1992)
DIN EN ISO 10304-2:1996-11 Determination of dissolved anions in water by liquid chromatography - Part 2: Determination of bromide, chloride, nitrate, nitrite, orthophosphate and sulfate anions in waste water (ISO 10304-2:1995)
DIN EN ISO 10304-1 E:2008 Draft Document - Water quality - Determination of dissolved anions by liquid chromatography of ions - Part 1: Determination of bromide, chloride, fluoride, nitrate, nitrite, phosphate and sulfate (ISO 10304-1:2007); German version prEN ISO 10304-1:2008

GM Europe

GME B 040 0427-2003 Nitrate-Free Phosphate Solution (English/German)
GME B 040 0722-1987 Nitrite accelerator
GME L 000 0642-2003 Dip phosphate make-up solution (liquid, nitrite accelerated) (English/German)

U.S. Military Regulations and Norms

ARMY A-A-59339-1998 GUANIDINE NITRATE
ARMY A-A-59339 VALID NOTICE 1-2003 GUANIDINE NITRATE

Gosstandart of Russia

GOST R ISO 15587-1-2014 Water. Sample digestion using the mixture of hydrochloric and nitric acids for the determination of selected elements
GOST EN 12014-3-2015 Foodstuffs. Determination of nitrate and/or nitrite content. Part 3. Spectrophotometric determination of nitrate and nitrite content of meat products after enzymatic reduction of nitrate to nitrite
GOST R 51460-1999 Cheese. Method for determination of nitrate and nitrite contents
GOST R 51454-1999 Caseins and caseinates. Method of determination of nitrate and nitrite contents
GOST EN 12014-4-2015 Foodstuffs. Determination of nitrate and/or nitrite content. Part 4. Determination of nitrate and nitrite content in meat products by ion-exchange chromatographic method
GOST ISO 10304-1-2016 Water quality Determination of the content of dissolved anions by liquid ion exchange chromatography Part 1: Determination of the content of bromides - chlorides - fluorides - nitrates - nitrites - phosphates and sulfates
GOST 32257-2013 Milk and milk products. Method for determination of nitrate and nitrite contents

Yugoslav Association for Standardization

JUS H.Z1.137-1985 Testing of industrial vvaters. Determination of nitrite-nitrate and the combined nitrite-nitrate nitrogen, Spectrophotometric method
JUS H.G8.044-1982 Reaaents. Si Iver nitrate. Determination ofsulphates content. Turbidimetric method

Asociación Española de Normalización (AENOR)

AENOR UNE-EN 12014-3:2006 Foodstuffs - Determination of nitrate and/or nitrite content - Part 3: Spectrometric determination of nitrate and nitrite content of meat products after enzymatic reduction of nitrate to nitrite
AENOR UNE-EN ISO 10304-1:2009 Water quality - Determination of dissolved anions by liquid chromatography of ions - Part 1: Determination of bromide, chloride, fluoride, nitrate, nitrite, phosphate and sulfate (ISO 10304-1:2007)
AENOR UNE-EN 12014-4:2006 Foodstuffs - Determination of nitrate and/or nitrite content - Part 4: Ion-exchange chromatographic (IC) method for the determination of nitrate and nitrite content of meat products

Magyar Szabványügyi Testület

MSZ 448/12.lap-1964 Drinking water nitrate and nitrite ions definition
MSZ 11483-1981 For nitrate research
MNOSZ 9475-1952 Wine testing. Nitrate and nitrite content indicators and detection
MSZ 24461-1957 Nitrate, for analysis
MSZ 8779-1964 Lead for analysis. Nitrate

American Society for Testing and Materials (ASTM)

ASTM D3867-99 Standard Test Methods for Nitrite-Nitrate in Water
ASTM D3867-16 Standard Test Methods for Nitrite-Nitrate in Water
ASTM D7781-14 Standard Test Method for Nitrite-Nitrate in Water by Nitrate Reductase
ASTM D7781-23 Standard Test Method for Nitrite-Nitrate in Water by Nitrate Reductase
ASTM D3867-09 Standard Test Methods for Nitrite-Nitrate in Water
ASTM D3867-04 Standard Test Methods for Nitrite-Nitrate in Water
ASTM D3867-16(2021)e1 Standard Test Methods for Nitrite-Nitrate in Water

Japanese Industrial Standards Committee (JISC)

JIS K 8568:1966(1992) Manganese Nitrate
JIS K 8553:1961 Zirconyl nitrate
JIS K 0400-35-30:1999 Water quality -- Determination of dissolved fluoride, chrolide, nitrite, orthophosphate, bromide, nitrate and sulfate ions, using liquid chromatography of ions Part 1: Method for water with low contamination

GCC Standardization Organization

GSO ISO 10304-1:2014 Water quality -- Determination of dissolved anions by liquid chromatography of ions -- Part 1: Determination of bromide, chloride, fluoride, nitrate, nitrite, phosphate and sulfate

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

TCVN 6494-1-2011 Water quality.Determination of dissolved anions by liquid chromatography of ions.Part 1: Determination of bromide, chloride, fluoride, nitrate, nitrite, phosphate and sulfate
TCVN 7257-2003 Tobacco and tobacco products.Determination of total nitrate and nitrite contents

Korean Agency for Technology and Standards (KATS)

KS M 9108-1996 Water quality-Determination of dissolved fluoride,chloride,nitrite,orthophosphate,bromide,nitrate and sulfate ions,using liquid chromatography of ions(Method for water with low contamination)
KS I ISO 10304-1-2023 Water quality — Determination of dissolved anions by liquid chromatography of ions — Part 1: Determination of bromide, chloride, fluoride, nitrate, nitrite, phosphate and sulfate
KS I ISO 10304-1:2006 Water quality-Determination of dissolved fluoride, chloride, nitrite, orthophosphate, bromide, nitrate and sulfate ions, using liquid chromatography of ions-Part 1:Method for water with low contamination
KS M ISO 10304-2-2008 Water quality－Determination of dissolved anions by liquid chromatography of ions－Part 2：Determination of bromide, chloride, nitrate,nitrite, orthophosphate and sulfate in waste water
KS I ISO 10304-1-2017 Water quality — Determination of dissolved anions by liquid chromatography of ions — Part 1: Determination of bromide, chloride, fluoride, nitrate, nitrite, phosphate and sulfate
KS I ISO 10304-1:2017 Water quality — Determination of dissolved anions by liquid chromatography of ions — Part 1: Determination of bromide, chloride, fluoride, nitrate, nitrite, phosphate and sulfate
KS H ISO 8195-2006 Caseins and caseinates－Determination of nitrate and nitrite contents－Method by cadmium reduction and spectrometry
KS H ISO 6736:2001 Dried milk－Determination of nitrate and nitrite contents－Method by cadmium reduction and photometry
KS H ISO 6736-2001 Dried milk－Determination of nitrate and nitrite contents－Method by cadmium reduction and photometry
KS H ISO 4099:2001 Cheese－Determination of nitrate and nitrite contents－Method by cadmium reduction and photometry
KS I ISO 15587-2-2008(2013) Water quality－Digestion for the determination of selected elements in water－Part 2：Nitric acid digestion
KS H ISO 8195:2001 Caseins and caseinates－Determination of nitrate and nitrite contents－Method by cadmium reduction and spectrometry
KS H ISO 4099-2001 Cheese－Determination of nitrate and nitrite contents－Method by cadmium reduction and photometry
KS H ISO 6736:2006 Dried milk－Determination of nitrate and nitrite contents－Method by cadmium reduction and photometry
KS M ISO 10084:2006 Solid fertilizers-Determination of mineral-acid-soluble sulfate content-Gravimetric method
KS M ISO 10084:2013 Solid fertilizers-Determination of mineral-acid-soluble sulfate content-Gravimetric method
KS H ISO 8195-2001 Caseins and caseinates－Determination of nitrate and nitrite contents－Method by cadmium reduction and spectrometry
KS H ISO 4099:2006 Cheese－Determination of nitrate and nitrite contents－Method by cadmium reduction and photometry
KS H ISO 8195:2006 Caseins and caseinates－Determination of nitrate and nitrite contents－Method by cadmium reduction and spectrometry

International Organization for Standardization (ISO)

ISO 10304-2:1995 Water quality - Determination of dissolved anions by liquid chromatography of ions - Part 2: Determination of bromide, chloride, nitrate, nitrite, orthophosphate and sulfate in waste water
ISO 10304-1:2007 Water quality - Determination of dissolved anions by liquid chromatography of ions - Part 1: Determination of bromide, chloride, fluoride, nitrate, nitrite, phosphate and sulfate
ISO 6736:1982 Dried milk; Determination of nitrate and nitrite contents; Method by cadmium reduction and photometry
ISO 15587-2 Water quality - Digestion for the determination of selected elements in water - Part 2: Nitric acid digestion
ISO 10304-1:2007/Cor 1:2010 Water quality - Determination of dissolved anions by liquid chromatography of ions - Part 1: Determination of bromide, chloride, fluoride, nitrate, nitrite, phosphate and sulfate; Technical Corrigendum 1

The Directorate General of Specifications and Metrology (DGSM)

OS GSO ISO 10304-1:2014 Water quality -- Determination of dissolved anions by liquid chromatography of ions -- Part 1: Determination of bromide, chloride, fluoride, nitrate, nitrite, phosphate and sulfate
OS GSO ISO 15587-2:2015 Water quality -- Digestion for the determination of selected elements in water -- Part 2: Nitric acid digestion

Standard Association of Australia （SAA）

AS 2029:1977 Method for the determination of nitrate and nitrite content in waters

American Water Works Association (AWWA)

AWWA WQTC58898 Biological, Chemical, and Electrolytic Ion Exchange Brine Treatment for Perchlorate and Nitrate Removal
AWWA ACE56242 Elimination and Minimization of Ion-Exchange Brine Disposal During Perchlorate and Nitrate Treatment
AWWA WQTC65748 Reduction of Nitrate through the Use of Nitrate Reductase for the SmartChem Autoanalyzer

Kingdom of Bahrain Testing and Metrology Directorate

BH GSO ISO 10304-1:2016 Water quality -- Determination of dissolved anions by liquid chromatography of ions -- Part 1: Determination of bromide, chloride, fluoride, nitrate, nitrite, phosphate and sulfate
BH GSO ISO 15587-2:2016 Water quality -- Digestion for the determination of selected elements in water -- Part 2: Nitric acid digestion

National Standardisation Body (ASRO)

STAS 10314-1984 MILK AND MILK PRODUCTS Determination of nitrites and nitrates content

Polski Komitet Normalizacyjny (PKN)

PN A82114-1974 Meat and meat products Determination of nitrite and nitrate content
PN BN 6191-05-1963 Calcium nitrate test reagent

Belgian Standards Institute

NBN V 21-027-1982 Cheese - Determination of nitrate and nitrite contents - Reference method
NBN V 21-028-1982 Dried milk and whey powder - Determination of nitrate and nitrite contents -Reference method

Austrian Standards

ONORM M 6283-1990 Water analysis; determination of fluoride, Chloride, nitrite, Phosphate, bromide, nitrate and sulfate by Ion exchange chromatography
ONORM DIN 10338-1992 Determination of nitrate and nitrite contents of cheese - Method by cadmium reduction

Netherlands Institute for Standardization

NEN 6652-1992 Water- Photometric determination of the sum of the contents of dissolved nitrate and nitrite by continuous flow analysis

Bureau of Indian Standards

IS 9967-1997 Cheese - determination of nitrate and nitrite content - Method by cadmium reduction and photometry
IS 3025-82-2024 Methods of Sampling and Test (Physical and Chemical) for Water and Wastewater - Part 82 Ammonium, Nitrate, Nitrite, Chloride, Orthophosphate, Sulfate and Silicate with Photometric Detection

Military Standards (MIL-STD)

MIL-P-46994B/NOTICE-1 Pellets/Granules Boron/Potassium Nitrate