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immunoluminescence and chemiluminescence

immunoluminescence and chemiluminescence, Total:179 items.

In the international standard classification, immunoluminescence and chemiluminescence involves: Laboratory medicine, Medical sciences and health care facilities in general, Veterinary medicine, Testing of metals, Non-ferrous metals, Milk and milk products, Lamps and related equipment, Analytical chemistry, Microbiology, Inorganic chemicals, Air quality, Fuels, Vocabularies, Ferrous metals, Petroleum products in general, Tobacco, tobacco products and related equipment, Optoelectronics. Laser equipment, Dentistry, Crude petroleum, General methods of tests and analysis for food products.

Professional Standard - Medicine, immunoluminescence and chemiluminescence

YY/T 1174-2010 Semi-automatic chemiluminescence immunoassay analyzer
YY/T 1155-2009 Automatic Luminescence Immunoassay Analyzer
YY/T 1817-2022
YY/T 1160-2009 Carcinoembryonic Antigen Quantitative Detection Reagent(Kit) (Chemiluminescent Immunoassay)
YY/T 1162-2009 Alpha-fetoprotein quantitative detection reagent(Kit) (Chemiluminescent Immunoassay)
YY/T 1175-2010 Quantitative detection reagent (kit) for tumor markers.Chemiluminescent immunoassay
YY/T 1177-2010 Cancer antigen CA72-4 quantitative detection reagent (kit).Chemiluminescent immunoassay
YY/T 1179-2010 Carbohydrate antigen CA50 quantitative detection reagent(kit).Chemiluminescent immunoassay
YY/T 1176-2010 Cancer antigen CA15-3 quantitative detection reagent (kit).Chemiluminescent immunoassay
YY/T 1178-2010 Carbohydrate antigen CA19-9 quantitative detection reagent(kit).Chemiluminescent immunoassay
YY/T 1233-2014 Cardiac troponin-I(cTnl) quantitative detection reagent (kit) (Chemiluminescent immunoassay)
YY/T 1161-2009 Tumor Associated Antigen CA125 Quantitative Detection Reagent(Kit) (Chemiluminescent Immunoassay)
YY/T 1248-2014 Hepatitis B virus surface antibody (HBsAb) detection reagent (kit) (Chemiluminescent immunoassay)
YY/T 1247-2014 Hepatitis B virus surface antigen (HBsAg) detection reagent(kit) (Chemiluminescent immunoassay)
YY/T 1193-2011 Folicle stimulating hormone(FSH) quantitative immunoassay kit (chemiluminescent immunoassay)
YY/T 1458-2016 Antibodies to thyroid peroxidase quantitative test reagent(chemiluminescent immunoassay)
YY/T 1192-2011 Human chorionic gonadotropin(HCG) quantitative detection reagent(kit) (chemilumiuescent immunoassay)
YY/T 1163-2009 Total Prostate Specific Antigen(t-PSA) Quantitative Detection Reagent(Kit) (Chemiluminescent Immunoassay)

Group Standards of the People's Republic of China, immunoluminescence and chemiluminescence

T/CAME 58-2023 Microfluidic chip for chemiluminescence immunoassay
T/CVMA 33-2020 Chemiluminescent Immunoassay Detection Method for Peste des Petits Ruminants Virus Antibody
T/CVMA 30-2020 Chemiluminescent Immunoassay Detection Method for Foot-and-Mouth Disease Virus Type A Antibody
T/CVMA 31-2020 Chemiluminescent Immunoassay Detection Method for Foot-and-Mouth Disease Virus Type O Antibody
T/CVMA 35-2020 Chemiluminescent Immunoassay Detection Method for Antibody of CSFV
T/GDID 1076-2023 Tubular chemiluminescence immunoassay for detecting antibodies of foot and mouth disease viruses serotype O
T/GDMDMA 0001-2022 Interleukin 6 Detection kit (Chemiluminescent Immunoassay)
T/GDMDMA 0028-2023 Heparin-binding Protein Testing Kit (chemiluminescent immunoassay)
T/CVMA 32-2020 Chemiluminescence Immunoassay Detection Method for Avian Leukosis Virus Antigen
T/CVMA 34-2020 Chemiluminescent Immunoassay Detection Method for Porcine Pseudorabies Virus gB Antibody
T/CVMA 26-2020 Tube Chemiluminescent Immunoassay Detection Method for Foot-and-Mouth Disease Virus Type O and Type A Antibodies
T/GDMDMA 0027-2023 N-terminal Propeptide of Type Ⅲ Procollagen Testing Kit (chemiluminescent immunoassay)
T/GDMDMA 0002-2022 Lipoprotein-associated Phospholipase A2 Detection kit(Chemiluminescent Immunoassay)
T/GDID 1077-2023 Tubular chemiluminescence immunoassay for detecting antibodies of african swine fever virus P30
T/GDID 1075-2023 Tubular chemiluminescence immunoassay for detecting antibodies of pseudorabies virus gB glycoprotein
T/CVMA 29-2020 Chemiluminescence immunoassay detection method for porcine reproductive and respiratory syndrome virus antibody

国家药品监督管理局, immunoluminescence and chemiluminescence

YY/T 1583-2018 Folic acid assay kit (chemiluminescence immunoassay)

Hunan Provincial Standard of the People's Republic of China, immunoluminescence and chemiluminescence

DB43/T 1897-2020 General technical requirements for reference light sources for chemiluminescence immunoassay analyzers

国家食品药品监督管理局, immunoluminescence and chemiluminescence

YY/T 1589-2018 Estradiol Assay Kit (Chemiluminescence Immunoassay)
YY/T 1526-2017 Human immunodeficiency virus antigen and antibody combined detection kit (luminescent type)

国家药监局, immunoluminescence and chemiluminescence

YY/T 1155-2019 Fully automatic luminescence immunoanalyzer
YY/T 1828-2021 Anti-Müllerian hormone assay kit (chemiluminescence immunoassay)
YY/T 1735-2021 Hepatitis C virus antibody detection reagent (box) (chemiluminescence immunoassay)
YY/T 1882-2023 Treponema pallidum antibody detection kit (luminescence immunoassay)
YY/T 1791-2021 Hepatitis B virus e antibody detection kit (luminescence immunoassay)
YY/T 1868-2023 Hepatitis B virus core antibody detection kit (luminescence immunoassay)

Professional Standard - Commodity Inspection, immunoluminescence and chemiluminescence

SN/T 3314-2012 Quarantine protocal for okadaic acid in export marine products by enzyme enhancement chemiluminescence immunoassay
SN/T 2260-2010 Determination chemical compounds of copper cathode-Photoeletric emission spectroscopic method

National Metrological Technical Specifications of the People's Republic of China, immunoluminescence and chemiluminescence

JJF 1752-2019 Calibration Specification for Automatic Closed Luminescence Immunoassay Analyzers
JJF 1849-2020 Calibration Specification for Microplate Chemiluminescence Analyzers
JJF 1361-2012 Program on Pattern Evaluation of Chemiluminescent NO/NO Analyzers
JJF 1953-2021 Calibration Specification for Gas Chromatographs with Sulfur Chemiluminescence Detector

Korean Agency for Technology and Standards (KATS), immunoluminescence and chemiluminescence

KS M 0028-2009(2019) General rules for light emission spectrochemical analysis
KS D 2518-2015(2020) Methods for photoelectric emission spectrochemical analysis of cadmium metal
KS D 1852-2005 Methods for photoelectric emission spectrochemical analysis of aluminium and aluminium alloys
KS D 1650-1993 General rules for photoelectric emission spectrochemical analysis of metal materials
KS D 1681-1993 Method for emission spectrochemical analysis of aluminium ingot
KS D 2086-1993 Methods for emission spectrochemical analysis of titanium
KS D 1899-2019 Methods for photoelectric emission spectrochemical analysis of electrolytic cathode copper
KS D 1929-2019 Methods for photoelectric emission spectrochemical analysis of die casting zinc alloys
KS D 1929-2004 Methods for photoelectric emission spectrochemical analysis of die casting zinc alloys
KS D 1683-1993 Method for emission spectrochemical analysis of silver ingot
KS D 1681-2018 Method for emission spectrochemical analysis of aluminium ingot
KS M 0032-2009(2019) General rules for ICP emission spectrochemical analysis
KS D 1852-2015 Methods for photoelectric emission spectrochemical analysis of aluminium and aluminium alloys
KS D 1852-2020 Methods for optical emission spectrochemical analysis of aluminium and aluminium alloys
KS D 1685-1993 Methods for emission spectrochemical analysis of zinc metal
KS D ISO 14707:2003 Surface chemical analysis-Glow discharge optical emission spectrometry (GD-OES)-Introduction to use
KS D ISO 14707-2003(2018)
KS D 1929-1993 Methods for Emission Spectrochemical Analysis of Die Casting Zinc Alloy
KS D 1899-1993 Methods for emission spectrochemical analysis of electrolytic cathode copper
KS D 1680-1993 General rules for photographic emission spectrochemical analysis of metal materials
KS D 1650-2008(2018) General rules for photoelectric emission spectrochemical analysis of metal materials

Defense Logistics Agency, immunoluminescence and chemiluminescence

DLA A-A-55135 VALID NOTICE 2-2011 LIGHT, CHEMILUMINESCENT, 6 IN - 5 IN - C
DLA A-A-55432 VALID NOTICE 2-2011 Light, Chemiluminescent, 15 In- 12 Hr- B, E, F
DLA A-A-55132 VALID NOTICE 2-2011 LIGHT, CHEMILUMINESCENT, 6-IN - 30 MIN E, F
DLA A-A-55433 VALID NOTICE 2-2011 Light, Chemiluminescent, 15 In - 8 Hr - A, G
DLA A-A-55434 VALID NOTICE 2-2011 LIGHT, CHEMILUMINESCENT, 4 IN - 6 HR - B, C
DLA A-A-55133 VALID NOTICE 1-2005 LIGHT, CHEMILUMINESCENT, 6-IN - 30 MIN - G
DLA A-A-55133-1992 LIGHT, CHEMILUMINESCENT, 6-IN - 30 MIN - G
DLA A-A-55135 VALID NOTICE 1-2005 LIGHT, CHEMILUMINESCENT, 6 IN - 5 IN - C
DLA A-A-55135-1992 LIGHT, CHEMILUMINESCENT, 6 IN - 5 IN - C
DLA A-A-55134 VALID NOTICE 2-2011 LIGHT, CHEMILUMINESCENT, 6 IN - 12 HOUR - B, C, E, F
DLA A-A-55134 A-2013 LIGHT, CHEMILUMINESCENT, 6 IN ?12 HOUR ?B, C, E, F
DLA A-A-55132 VALID NOTICE 1-2005 LIGHT, CHEMILUMINESCENT, 6-IN - 30 MIN E, F
DLA A-A-55132-1992 LIGHT, CHEMILUMINESCENT, 6-IN - 30 MIN E, F
DLA A-A-55134 VALID NOTICE 1-2005 LIGHT, CHEMILUMINESCENT, 6 IN - 12 HOUR - B, C, E, F
DLA A-A-55134-1992 LIGHT, CHEMILUMINESCENT, 6 IN - 12 HOUR - B, C, E, F

Association Francaise de Normalisation, immunoluminescence and chemiluminescence

NF A06-590:2005 Aluminium and aluminium alloys - Chemical analysis - Guideline for spark optical emission spectrometric analysis.
NF A06-840:1998 Zinc and zinc alloys. Optical emission spectrometric analysis.
NF T20-297:1971 Chemical analysis of sulphuric acid and oleum. Determination of ammoniacal nitrogen. Spectrophotometric method.
NF T20-002:1966 Standard plan for methods of chemical analysis by flame emission spectrophotometry.
NF ISO 14707:2006 Analyse chimique des surfaces - Spectrométrie d'émission optique à décharge luminescente - Introduction à son emploi
NF A06-012*NF EN 14242:2005 Aluminium and aluminium alloys - Chemical analysis - Inductive coupled plasma-optical emission spectrometric method
NF X21-053*NF ISO 14707:2006 Surface chemical analysis - Glow discharge optical emission spectrometry (GD-OES) - Introduction to use
NF X43-018:1983 Air pollution. Measurement of nitrogen oxides by chemiluminescence.
NF EN 15079:2015 Cuivre et alliages de cuivre - Analyse par spectrométrie d'émission optique à étincelles (SEO-E)
NF EN 17265:2019 Produits alimentaires - Dosage des éléments et de leurs espèces chimiques - Dosage de l'aluminium par spectrométrie d'émission optique avec plasma à couplage inductif (ICP-OES)

Professional Standard - Nuclear Industry, immunoluminescence and chemiluminescence

EJ/T 520-1990 Bio-chemiluminescence tester

RU-GOST R, immunoluminescence and chemiluminescence

GOST R 59326-2021 Milk and milk raw material. Determination of veterinary drugs and chemotherapeutic drugs by enzyme immunoassay with chemiluminescent detection using biochip technology
GOST 6012-2011 Nickel. Methods of chemical-atomic-emission spectral analysis
GOST 8776-2010 Cobalt. Methods of chemical-atomic-emission spectral analysis
GOST 6012-1978 Nickel. Methods of chemical-atomic-emission spectral analysis
GOST R 50233.5-1992 Niobium pentoxide. Chemical-atomic-emission method for determination of impurity metals

United States Navy, immunoluminescence and chemiluminescence

NAVY A-A-55131-1992 LIGHT, CHEMILUMINESCENT, 6 IN - 8HR - A, G

British Standards Institution (BSI), immunoluminescence and chemiluminescence

BS EN 14726:2005 Aluminium and aluminium alloys - Chemical analysis - Guideline for spark optical emission spectrometric analysis
BS EN 12019:1998 Zinc and Zinc Alloys - Optical Emission Spectrometric Analysis
BS DD ENV 12908:1998 Lead and lead alloys - Analysis by optical emission spectrometry (OES) with spark excitation
BS ISO 14707:2015 Surface chemical analysis. Glow discharge optical emission spectrometry (GD-OES). Introduction to use
BS ISO 14707:2000 Surface chemical analysis - Glow discharge optical emission spectrometry (GD-OES) - Introduction to use
BS DD ISO/TS 25138:2011 Surface chemical analysis. Analysis of metal oxide films by glow-discharge optical-emission spectrometry
BS ISO 11505:2013 Surface chemical analysis. General procedures for quantitative compositional depth profiling by glow discharge optical emission spectrometry
BS ISO 16962:2017 Surface chemical analysis. Analysis of zinc- and/or aluminium-based metallic coatings by glow-discharge optical-emission spectrometry
BS EN 62341-6-1:2011 Organic light emitting diode (OLED) displays. Measuring methods of optical and electro-optical parameters
BS EN ISO 10650-2:2007 Dentistry. Powered polymerization activators. Light-emitting diode (LED) lamps

European Committee for Standardization (CEN), immunoluminescence and chemiluminescence

EN 14726:2005 Aluminium and aluminium alloys - Chemical analysis - Guideline for spark optical emission spectrometric analysis
PREN 14726-2003 Aluminium and aluminium alloys - Chemical analysis - Guideline for spark optical emission spectrometric analysis
EN 14242:2004 Aluminium and aluminium alloys - Chemical analysis - Inductively coupled plasma optical emission spectral analysis
CEN EN 14726-2005 Aluminium and aluminium alloys — Chemical analysis — Guideline for spark optical emission spectrometric analysis

CEN - European Committee for Standardization, immunoluminescence and chemiluminescence

EN 14726:2019 Aluminium and aluminium alloys - Determination of the chemical composition of aluminium and aluminium alloys by spark optical emission spectrometry

National Metrological Verification Regulations of the People's Republic of China, immunoluminescence and chemiluminescence

JJG 801-2004 Chemiluminescent NO/NOx Analyzers
JJG 801-1993 Verification Regulation of Chemiluminescent NO/NO<下标x> Analyzer

Japanese Industrial Standards Committee (JISC), immunoluminescence and chemiluminescence

JIS H 1123:1995 Method for photoelectric emission spectrochemical analysis of lead metal
JIS H 1163:1991 Method for photoelectric emission spectrochemical analysis of cadmium metal
JIS H 1113:2022 Method for photoelectric emission spectrochemical analysis of zinc metal
JIS H 1103:1995 Method for photoelectric emission spectrochemical analysis of electrolytic cathode copper
JIS H 1560:2016 Method for photoelectric emission spectrochemical analysis of die casting zinc alloys
JIS H 1303:1976 Method for emission spectrochemical analysis of aluminium ingot
JIS H 1322:1976 Method for emission spectrochemical analysis of magnesium ingot
JIS H 1305:1976 Method for photoelectric emission spectrochemical analysis of aluminium and aluminium alloy
JIS Z 2611:1977 General rules for photoelectric emission spectrochemical analysis of metal materials
JIS K 0150:2009 Surface chemical analysis -- Analysis of zinc- and/or aluminium-based metallic coatings by glow-discharge optical-emission spectrometry
JIS K 0144:2001 Surface chemical analysis -- Glow discharge optical emission spectrometry (GD-OES) -- Introduction to use
JIS K 0144:2018 Surface chemical analysis -- Glow discharge optical emission spectrometry (GD-OES) -- Introduction to use

RO-ASRO, immunoluminescence and chemiluminescence

STAS 12814-1990 ALUMINIUM AND ALUMINIUM ALLOYS Analysis by optical emission spectro- metry
STAS 2849/5-1986 Lighting OPTICAL PROPERTIES OF MATERIALS AND SUBSTANCES Terminology
STAS SR ISO 10313:1995 Ambient air - Detennination of the mass concentration of ozon -Chemiluminescence method

Danish Standards Foundation, immunoluminescence and chemiluminescence

DS/EN 14726:2005 Aluminium and aluminium alloys - Chemical analysis - Guideline for spark optical emission spectrometric analysis
DS/EN 14242:2004 Aluminium and aluminium alloys - Chemical analysis - Inductively coupled plasma optical emission spectral analysis

Lithuanian Standards Office , immunoluminescence and chemiluminescence

LST EN 14726-2005 Aluminium and aluminium alloys - Chemical analysis - Guideline for spark optical emission spectrometric analysis
LST EN 14242-2005 Aluminium and aluminium alloys - Chemical analysis - Inductively coupled plasma optical emission spectral analysis

AENOR, immunoluminescence and chemiluminescence

UNE-EN 14726:2006 Aluminum and aluminium alloys. Chemical analysis. Guideline for spark optical emission spectometric analysis

German Institute for Standardization, immunoluminescence and chemiluminescence

DIN 58967-20:2003 Medical microbiology and immunology - Diagnostics of infectious diseases and diseases of the immune system in serology and molecular biology - Part 20: General method-specific requirements for immunofluorescence tests (IFT)
DIN EN 14726:2019-06 Aluminium and aluminium alloys - Determination of the chemical composition of aluminium and aluminium alloys by spark optical emission spectrometry; German version EN 14726:2019
DIN EN 14242:2004 Aluminium and aluminium alloys - Chemical analysis - Inductively coupled plasma optical emission spectral analysis; German version EN 14242:2004
DIN EN 14726:2005 Aluminium and aluminium alloys - Chemical analysis - Guideline for spark optical emission spectrometric analysis; English version of DIN EN 14726:2005
DIN EN 15079:2015-07 Copper and copper alloys - Analysis by spark optical emission spectrometry (S-OES); German version EN 15079:2015

Anhui Provincial Standard of the People's Republic of China, immunoluminescence and chemiluminescence

DB34/T 813-2008 Determination of Aflatoxins in Feeds by Immunoaffinity Chromatography Purification by Fluorescence Spectrophotometry

GOSTR, immunoluminescence and chemiluminescence

GOST 34285-2017 Food products, food raw materials. Method for the detection of chemotherapeutic drugs by the hemiluminescence immunoenzymatic assay with the use of biochip technology

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China, immunoluminescence and chemiluminescence

GB/T 19502-2004 Surface chemical analysis-Glow discharge optical emission spectrometry(GD-OSE)-Introduction to use
GB/T 11066.9-2009 Methods for chemical analysis of gold.Determination for arsenic and tin contents.Hydride generation-atomic fluorescence spectrometry
GB/T 6150.7-2008 Methods for chemical analysis of tungsten concentrates.Determination of tantalum content and niobium content.Inductively coupled plasma emission spectrometry and spectrophotometry
GB/T 17674-2012 Determination of nitrogen in crude oil by boat-inlet chemiluminescence
GB/T 18979-2003 Determination aflatoxins content in food--Cleanup by immunoaffinity chromatogaphy and determination by high-performance liquid chromatigraphy and fluorometer

Taiwan Provincial Standard of the People's Republic of China, immunoluminescence and chemiluminescence

CNS 13199-1993 Method of Test for Nitrogen Oxides in Ambient Air (Chemiluminescence Method)

ES-UNE, immunoluminescence and chemiluminescence

UNE-EN 14726:2020 Aluminium and aluminium alloys - Determination of the chemical composition of aluminium and aluminium alloys by spark optical emission spectrometry
UNE-EN 15079:2015 Copper and copper alloys - Analysis by spark optical emission spectrometry (S-OES)

KR-KS, immunoluminescence and chemiluminescence

KS D ISO 14707-2003(2023)

Universal Oil Products Company (UOP), immunoluminescence and chemiluminescence

UOP 936-1995 COMBINED NITROGEN IN LPG BY CHEMILUMINESCENCE
UOP 971-2000 TRACE NITROGEN IN LIGHT AROMATIC HYDROCARBONS BY CHEMILUMINESCENCE

CU-NC, immunoluminescence and chemiluminescence

NC 24-50-1985 Inorganic Chemical Products. Brilliant Sulfur, Quality Specifications

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, immunoluminescence and chemiluminescence

GB/T 32996-2016 Surface chemical analysis—Analysis of metal oxide films by glow-discharge optical emission spectrometry

American Society for Testing and Materials (ASTM), immunoluminescence and chemiluminescence

ASTM UOP936-16 Combined Nitrogen in LPG by Chemiluminescence
ASTM E172-90(1999) Practice for Describing and Specifying the Excitation Source in Emission Spectrochemical Analysis (Withdrawn 2001)
ASTM UOP936-95 Combined Nitrogen in LPG by Chemiluminescence
ASTM UOP936-20 Combined Nitrogen in LPG by Chemiluminescence

国家能源局, immunoluminescence and chemiluminescence

SH/T 1821-2018 Determination of trace nitrogen in industrial aromatics by chemiluminescence method

International Organization for Standardization (ISO), immunoluminescence and chemiluminescence

ISO 16962:2017 Surface chemical analysis - Analysis of zinc- and/or aluminium-based metallic coatings by glow-discharge optical-emission spectrometry
ISO/TS 25138:2019 Surface chemical analysis — Analysis of metal oxide films by glow-discharge optical-emission spectrometry
ISO 16962:2005 Surface chemical analysis - Analysis of zinc- and/or aluminium-based metallic coatings by glow-discharge optical-emission spectrometry
ISO 24417:2022 Surface chemical analysis — Analysis of metallic nanolayers on iron based substrates by glow-discharge optical-emission spectrometry

International Telecommunication Union (ITU), immunoluminescence and chemiluminescence

ITU-T G.664-2012 Optical safety procedures and requirements for optical transmission systems (Study Group 15)

Professional Standard - Environmental Protection, immunoluminescence and chemiluminescence

HJ 1043-2019 Automatic Determination of Nitrogen Oxides in Ambient Air by Chemiluminescence
HJ 1225-2021 Automatic Determination of Ozone in Ambient Air by Chemiluminescence Method

工业和信息化部, immunoluminescence and chemiluminescence

YB/T 4144-2019 Establish and control atomic emission spectroscopy chemical analysis curve rules

Professional Standard - Petrochemical Industry, immunoluminescence and chemiluminescence

SH/T 0657-1998 Standard test method for trace nitrogen in liquid petroleum hydrocarbons by syringe/inlet oxidative combustion and chemiluminescence detection
SH/T 0657-2007 Standard test method for trace nitrogen in liquid petroleum hydrocarbons by syringe/inlet oxidative combusaonand and chemiluminescence detection

Professional Standard - Tobacco, immunoluminescence and chemiluminescence

YC/T 287-2009 Cigarettes.Determination of nitrogen oxide in cigarette mainstream smoke.Chemiluminescene method

Shandong Provincial Standard of the People's Republic of China, immunoluminescence and chemiluminescence

DB37/T 3784-2019 Chemiluminescence method for the determination of nitrogen oxides in exhaust gas from stationary pollution sources

国家市场监督管理总局、中国国家标准化管理委员会, immunoluminescence and chemiluminescence

GB/T 17674-2021 Determination of nitrogen in crude oil—Boat-inlet chemiluminescence

Chongqing Provincial Standard of the People's Republic of China, immunoluminescence and chemiluminescence

DB50/T 833-2017 Determination of nitrogen oxides in ambient air (nitrogen monoxide and nitrogen dioxide) by chemiluminescence