Nitrite nitrogen absorbance standard curve

Nitrite nitrogen absorbance standard curve, Total:93 items.

The international standard classification for "Nitrite nitrogen absorbance standard curve" includes: Water quality , Ferroalloys .

The Chinese standard classification for "Nitrite nitrogen absorbance standard curve" includes: Analysis methods for toxic substances in water , Chemical reagent in general , Steel and iron alloy analysis method , Basic standards and general methods for water treatment agent , Basic standards and general methods .

Hubei Provincial Standard of the People's Republic of China

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

Professional Standard - Environmental Protection

HJ/T 198-2005 Water quality -- Determination of nitrate-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/T 197-2005 Water quality -- Determination of nitrite-nitrogen Gas-phase molecular absorption spectrometry

中华人民共和国环境保护部

GB 7493-1987 Water quality-Determination of nitrogen (nitrite)-Spectrophotometric method
GB 7480-1987 Water quality-Determination of nitrate-Spectrophotometric method with phenol disulfonic acid

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

GB/T 7493-1987 quality - Determination of nitrogen (nitrite) - Spectrophotometric method
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/T 7480-1987 quality - Determination of nitrate - Spectrophotometric method with phenol disulfonic acid
GB/T 4701.4-2008 Ferrotitanium - Determinatino of manganese content - Arsenite-salt and sodium-salt titrimetric method and periodate photometric method
GB 6912.2-1986 Determination of nitrate and nitrite - Nitrite UV photometric method
GB 6912.3-1986 Determination of nitrate and nitrite a-naphthylamine hydrochloride spectrophotometric method
GB 6912.1-1986 Determination of nitrate and nitrite - Nitrate 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

Professional Standard - Urban Construction

CJ 26.26-1991 Municipal sewage water quality inspection method standard Determination of nitrite nitrogen spectrophotometric method
CJ/T 76-1999 Municipal sewage.Determination of nitrogen(nitrite).Sepectrophotometric method

Group Standards of the People's Republic of China

T/CHES 14-2017 Water Quality Determination of Nitrite Nitrogen Gas Phase Molecular Absorption Spectrometry
T/CHES 13-2017 Water Quality Determination of Nitrate Nitrogen Gas Phase Molecular Absorption Spectrometry

Professional Standard - Water Conservancy

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

Professional Standard - Chemical Industry

HG/T 3516-2011 Industrial circulating cooling water—Determination of nitrite—Molecularabsorption spectrometric method

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 - Ocean

HY/T 0345-2022 Determination of seawater trace nitrite—Flow analysis,diazotization and spectrophotometric detection witha long path length flow cell

YU-JUS

JUS H.Z1.137-1985 Testing of industrial vvaters. Determination of nitrite-nitrate and the combined nitrite-nitrate nitrogen, Spectrophotometric method

BE-NBN

NBN T 91-257-1977 Water analysis methods - Determination of the nitrite nitrogen - Photoraetric method

RO-ASRO

STAS SR ISO 6777:1996 Water quality - Determination of nitrite - Molecular absorption spectrometric method
STAS SR 3048-2-1996 Drinking water - Nitrites content determination - Molecular absorption spectrometric method

Korean Agency for Technology and Standards (KATS)

KS I ISO 6777:2007 Water quality－Determination of nitrite－Molecular absorption spectrometric method
KS M 1044-2009 Nitrite ion standard solution
KS H ISO 4099:2001 Cheese－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 6740:2001 Dried whey－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 6736:2006 Dried milk－Determination of nitrate and nitrite contents－Method by cadmium reduction and photometry
KS H ISO 6740:2006 Dried whey－Determination of nitrate and nitrite contents－Method by cadmium reduction and spectrometry
KS H ISO 6739:2006 Whey cheese－Determination of nitrate and nitrite contents－Method by cadmium reduction and spectrometry
KS I ISO 13395-2008(2018) Water quality－Determination of nitrite nitrogen and nitrate nitrogen and the sum of both by flow analysis (CFA and FIA) and spectrometric detection
KS H ISO 6739:2001 Whey cheese－Determination of nitrate and nitrite contents－Method by cadmium reduction and spectrometry
KS H ISO 8195:2006 Caseins and caseinates－Determination of nitrate and nitrite contents－Method by cadmium reduction and spectrometry
KS H ISO 8195:2001 Caseins and caseinates－Determination of nitrate and nitrite contents－Method by cadmium reduction and spectrometry
KS I ISO 6777-2007(2017) Water quality－Determination of nitrite－Molecular absorption spectrometric method
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

International Organization for Standardization (ISO)

ISO 6777:1984 Water quality; Determination of nitrite; Molecular absorption spectrometric method
ISO 6736:1982 Dried milk; Determination of nitrate and nitrite contents; Method by cadmium reduction and photometry
ISO 6739:1988 Whey cheese; determination of nitrate and nitrite contents; method by cadmium reduction and spectrometry
ISO 4099:1984 Cheese; Determination of nitrate and nitrite contents; Method by cadmium reduction and photometry
ISO 4099:1978 Cheese — Determination of nitrate and nitrite contents — Method by cadmium reduction and photometry
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 6635:1984 Fruits, vegetables and derived products; Determination of nitrite and nitrate content; Molecular absorption spectrometric method
ISO 6739:1982 Whey cheese — Determination of nitrate and nitrite contents — Method by cadmium reduction and photometry

Association Francaise de Normalisation

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 EN 26777:1993 Water quality - Nitrite dosage - Molecular absorption spectrometry method
NF V04-351:1985 DRIED MILK. DETERMINATION OF NITRATE AND NITRITE CONTENTS. METHOD BY CADMIUM REDUCTION AND PHOTOMETRY.
NF V04-290:1985 Cheese. Determination of nitrate and nitrite contents. Method by cadmium reduction and photometry.

American Society for Testing and Materials (ASTM)

ASTM D3867-99 Standard Test Methods for Nitrite-Nitrate in Water
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 Standard Test Methods for Nitrite-Nitrate in Water
ASTM D3867-16(2021)e1 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

GSO

GSO ISO 6635:2015 Fruits, vegetables and derived products -- Determination of nitrite and nitrate content -- Molecular absorption spectrometric method
OS GSO ISO 13395:2013 Water quality -- Determination of nitrite nitrogen and nitrate nitrogen and the sum of both by flow analysis (CFA and FIA) and spectrometric detection
GSO ISO 6777:2015 Water quality -- Determination of nitrite -- Molecular absorption spectrometric method
GSO ISO 13395:2013 Water quality -- Determination of nitrite nitrogen and nitrate nitrogen and the sum of both by flow analysis (CFA and FIA) and spectrometric detection

RU-GOST R

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

NL-NEN

NEN-ISO 6777:1993 Water quality. Determination of nitrite. Molecular absorption spectrometric method (ISO 6777:1984)
NEN 6474-1981 Water ■ Photometric determination of nitrite content

SCC

DANSK DS/EN ISO 13395:1997 Water quality - Determination of nitrite nitrogen and nitrate nitrogen and the sum of both by flow analysis (CFA and FIA) and spectrometric detection
DANSK DS/EN 26777:2003 Water quality - Determination of nitrite - Molecular absorption spectrometric method
UNE 34113:1981 FRUIT, VEGETABLE PRODUCTS AND DERIVED PRODUCTS. DETERMINATION OF NITRITES AND NITRITES CONTENT. PHOTOMETRIC METHOD.
AENOR UNE-EN ISO 13395:1997 WATER QUALITY. DETERMINATION OF NITRITE NITROGEN AND NITRATE NITROGEN AND THE SUM OF BOTH BY FLOW ANALYSIS (CFA AND FIA) AND SPECTROMETRIC DETECTION. (ISO 13395:1996).
NS-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 (ISO 13395:1996)

KR-KS

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 H ISO 6740-2001 Dried whey－Determination of nitrate and nitrite contents－Method by cadmium reduction and spectrometry
KS H ISO 6739-2001 Whey cheese－Determination of nitrate and nitrite contents－Method by cadmium reduction and spectrometry
KS H ISO 8195-2001 Caseins and caseinates－Determination of nitrate and nitrite contents－Method by cadmium reduction and spectrometry
KS I ISO 6777-2023 Water quality — Determination of nitrite — Molecular absorption spectrometric method

British Standards Institution (BSI)

BS EN ISO 13395:1996(1998) Water quality — Determination of nitrite nitrogen and nitrate nitrogen and the sum of both by flow analysis (CFA and FIA) and spectrometric detection

Danish Standards Foundation

DS/EN ISO 13395:1997 Water quality - Determination of nitrite nitrogen and nitrate nitrogen and the sum of both by flow analysis (CFA and FIA) and spectrometric detection
DS/EN 26777:2003 Water quality - Determination of nitrite - Molecular absorption spectrometric method

VN-TCVN

TCVN 6178-1996 Water quality.Determination of nitrite.Molecular absorption spectrometric method

German Institute for Standardization

DIN EN 26777:1993 Water quality; determination of nitrite; molecular absorption spectrometric method (ISO 6777:1984); german version EN 26777:1993
DIN EN ISO 13395:1996-12 Water quality - Determination of nitrite nitrogen and nitrate nitrogen and the sum of both by flow analysis (CFA and FIA) and spectrometric detection (ISO 13395:1996); German version EN ISO 13395:1996

ES-AENOR

UNE 34-850-1986 milk powder. Determination of nitrate and nitrite content. Calcium reduction method and photometric method

ZA-SANS

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 6777:1984 Water quality - Determination of nitrite - Molecular absorption spectrometric method

Lithuanian Standards Office

LST EN ISO 13395:2000 Water quality - Determination of nitrite nitrogen and nitrate nitrogen and the sum of both by flow analysis (CFA and FIA) and spectrometric detection (ISO 13395:1996)

Japanese Industrial Standards Committee (JISC)

JIS K 0400-43-30:2000 Water quality -- Determination of nitrite -- Molecular absorption spectrometric method

IN-BIS

IS 9967-1981 Cadmium reduction photometry method for determination of nitrate and nitrite content in cheese

European Committee for Standardization (CEN)

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
EN 26777:1993 Water Quality - Determination of Nitrite - Molecular Absorption Spectrometric Method (ISO 6777: 1984)

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