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Determination method of benzidine

Determination method of benzidine, Total:498 items.

In the international standard classification, Determination method of benzidine involves: Air quality, Vocabularies, Petroleum products in general, Water quality, Test conditions and procedures in general, Animal feeding stuffs, Leather technology, Products of the chemical industry, Veterinary medicine, Raw materials for rubber and plastics, Fuels, Analytical chemistry, Metalliferous minerals, Cereals, pulses and derived products, Products of the textile industry, Inorganic chemicals, General methods of tests and analysis for food products, Milk and milk products, Meat, meat products and other animal produce, Organic chemicals, Farming and forestry, Laboratory medicine, Wastes, Electrical accessories, Non-ferrous metals, Materials and articles in contact with foodstuffs, Pesticides and other agrochemicals, Tobacco, tobacco products and related equipment, Sugar. Sugar products. Starch, Materials for the reinforcement of composites, Ferrous metals, Plastics, Road vehicles in general, Protection against crime, Non-metalliferous minerals, Adhesives, Insulating fluids, Microbiology, Environmental protection, Rubber, Electronic components in general, Geology. Meteorology. Hydrology, Food products in general, Fruits. Vegetables, Conducting materials, Optics and optical measurements, Furniture, Testing of metals, Soil quality. Pedology, Lubricants, industrial oils and related products, Beverages, Coals, Footwear, Fishing and fish breeding, Domestic safety, Occupational safety. Industrial hygiene, Electrical engineering in general, Chocolate, Processes of the textile industry, Waxes, bituminous materials and other petroleum products, Fertilizers, Technical product documentation, Paints and varnishes, Road vehicle systems, Paint ingredients.

RU-GOST R, Determination method of benzidine

GOST 32531-2013 Benzidine. Determination of concentration in water by liquid-liquid extraction or solid phase extraction and reverse phase high performance liquid chromatography/particle-beam interface/mass-spectrometry
GOST 32596-2013 p,p'-Benzidine. Determination in water
GOST R 54503-2011 Water. Method for determination of polychlorinated biphenyls
GOST R 54503-2011(2019) Water. Method for determination of polychlorinated biphenyls
GOST 24655-1989 Synthetic rubbers. Methods for determination of diphenyl-n-phenylendiamine fraction of total mass
GOST 31983-2012 Food products, feeds, food raw materials. Method for determination of polychlorinated biphenyls
GOST R 53991-2010 Food products, feeds, food raw materials. Method for determination of polychlorinated biphenyls
GOST R 58014-2017 Silica fibre. Methods for determination of mass fraction of sizing agent and amine-containing coupling agent
GOST 25055-1987 Polyamides. Monometrical method for water determination
GOST 2706.12-1974 Benzene hydrocarbons and allied products. Method of determination of benzene freezing point
GOST 28467-1990 Products of fruits and vegetables processing. Method for determination of benzoic acid content
GOST 2706.5-1974 Benzene hydrocarbons and allied products. Method of determination of thiophene content in benzene
GOST 14839.9-1969 Industrial explosives. Method for determination of nitroamines (hexogen) content
GOST 33839-2016 Confectionery. Method for determination of mass fraction of benzoic acid
GOST 11235-1975 Phenolformaldehyde resins. Methods for determination of free phenol
GOST 11239-1976 Hard coal phenol products. Method for the determination of neutral oils
GOST 31860-2012 Drinking water. Method for determination of benz(a)pyrene content
GOST R 50484-1993 Phthalic anhydride for industrial use. Methods of test. Part 4. Determination of phthalic anhydride content. Titrimetric method
GOST R 54032-2010 Food products, feeds, food raw materials. Method of determination of beta-agonists by gas chromatography with mass spectrometry detector
GOST 1057-2014 Solvent-extracted oils. Method for the determination of phenol and creso
GOST 33296-2015 Residual fuel oils. Test for straight-run. Method for determination of toluene equivalent
GOST R 50837.3-1995 Residual fuel oils. Test for straight-run. Method for determination of toluene equivalent
GOST 2706.11-1974 Benzene hydrocarbons and allied products. Method of determination of bromine value
GOST EN 12766-3-2014 Petroleum products and used oils. Determination of polychlorinated biphenyls (PCB) and related products. Part 3. Determination and quantification of polychlorinated terphenyls (PCT) and polychlorinated benzyl toluenes (PCBT) content by gas chromatography
GOST R ISO 17070-2017 Leather. Chemical tests. Method for determination of tetrachlorophenol-, trichlorophenol-, dichlorophenol-, monochlorophenol-isomers and pentachlorophenol content

Professional Standard - Environmental Protection, Determination method of benzidine

HJ 1017-2019 Determination of Water Quality Benzidine by High Performance Liquid Chromatography
HJ 811-2016 Water quality―Determination of total selenium―3,3′-Diaminobenzidine spectrophotometric method
HJ 1210-2021 Determination of 13 Anilines and 2 Benzidines in Soil and Sediment by Liquid Chromatography-Triple Quadrupole Mass Spectrometry
HJ/T 68-2001 Stationary source emission.Determination of exhauster anilines.Gas chromatography
HJ 822-2017 Water Quality Determination of Aniline Compounds Gas Chromatography-Mass Spectrometry
HJ 903-2017 Determination of polychlorinated biphenyls in ambient air by gas chromatography
HJ 715-2014 Water quality — Determination of polychlorinated biphenyls (PCBs) — Gas chromatography mass spectrometry
HJ/T 31-1999 Stationary source emission.Determination of phosgene.Aniline ultraviolet spectrophotometric method
HJ 922-2017 Determination of polychlorinated biphenyls in soil and sediment by gas chromatography
HJ 902-2017 Determination of polychlorinated biphenyls in ambient air by gas chromatography-mass spectrometry
HJ 891-2017 Determination of Polychlorinated Biphenyls in Solid Waste by Gas Chromatography-Mass Spectrometry
HJ 585-2010 Water quality.Determination of free chlorine and total chlorine.Titrimetric method using N,N-diethyl-1,4-phenylenediamine
HJ 904-2017 Determination of polychlorinated biphenyl mixtures in ambient air by gas chromatography
HJ 743-2015 Soil and sediment — Determination of polychlorinated biphenyls（PCBs）— Gas chromatography mass spectrometry
HJ 890-2017 Determination of polychlorinated biphenyl mixtures in soil and sediment by gas chromatography
HJ 770-2015 Water quality-Determination of Phenoxy carboxylic acids herbicide by High Performance Liquid Chromatography–Tandem Mass Spectrometry
HJ 482-2009 Ambient air.Determination of sulfur dioxide.Formaldehyde absorbing.pararosaniline spectrophotometry
HJ 586-2010 Water quality.Determination of free chlorine and total chlorine.Spectrophotonetric method using N,N-diethyl-1,4-phenylenediamine
HJ 1048-2019 Determination of 17 Aniline Compounds in Water Quality by Liquid Chromatography-Triple Quadrupole Mass Spectrometry

Japanese Industrial Standards Committee (JISC), Determination method of benzidine

JIS K 2256:1985 Testing methods for aniline point and mixed aniline point of petroleum products
JIS K 0093:1995 Method for determination of polychlorinated biphenyl in industrial waste water
JIS K 0093:2002 Testing method for polychlorobiphenyl in industrial water and wastewater
JIS K 0093:2006 Testing methods for polychlorobiphenyl in industrial water and wastewater
JIS K 0311:1999 Method for determination of tetra- through octa-chlorodibenzo-p-dioxins, tetra- through octa-chlorodibenzofurans and coplanar polychlorobiphenyls in stationary source emissions
JIS K 0088:1997 Methods for determination of benzene in flue gas
JIS K 0312:1999 Method for determination of tetra- through octa-chlorodibenzo-p-dioxins, tetra- through octa-chlorodibenzofurans and coplanar polychlorobiphenyls in industrial water and waste water
JIS K 0311:2005 Method for determination of tetra-through octachlorodibenzo-p-dioxins, tetra-through octachlorodibenzofurans and dioxin-like polychlorinatedbiphenyls in stationary source emissions
JIS K 0311 AMD 1:2008 Method for determination of tetra-through octachlorodibenzo-p-dioxins, tetra-through octachlorodibenzofurans and dioxin-like polychlorinatedbiphenyls in stationary source emissions (Amendment 1)
JIS K 0312:2005 Method for determination of tetra-through octachlorodibenzo-p-dioxins, tetra-through octachlorodibenzofurans and dioxin-like polychlorinatedbiphenyls in industrial water and waste water

Shandong Provincial Standard of the People's Republic of China, Determination method of benzidine

DB37/T 4146-2020 Determination of Benzidine in Water by Solid Phase Extraction-Liquid Chromatography-Tandem Mass Spectrometry
DB37/T 2650-2015 Determination of Aniline Compounds in Motor Gasoline by Gas Chromatography
DB37/T 4145-2020 Water Quality Determination of Acrylamide by Liquid Chromatography-Tandem Mass Spectrometry
DB37/T 4299-2020 Determination of Amantadine in Seawater by Liquid Chromatography Tandem Mass Spectrometry
DB37/T 4013-2020 Determination of Triazines, Amides and Dinitroaniline Herbicides in Aquaculture Water by Gas Chromatography-Mass Spectrometry
DB37/T 3762-2019 Determination of amantadine residues in eggs by liquid chromatography-tandem mass spectrometry
DB37/T 3406-2018 Determination of triazine, amide and dinitroaniline herbicide residues in aquatic products by gas chromatography-mass spectrometry
DB37/T 2817-2016 Determination of Amantadine Added in Qingjie Mixture by Liquid Chromatography-Tandem Mass Spectrometry
DB37/T 3032-2017 Determination of benomyl and carbendazim in cosmetics by liquid chromatography-tandem mass spectrometry
DB37/T 3029-2017 Determination of 8 sulfa antibiotics in cosmetics by liquid chromatography-tandem mass spectrometry
DB37/T 4477-2021 Determination of Diamide Insecticide Residues in Water by Liquid Chromatography-Tandem Mass Spectrometry

Hunan Provincial Standard of the People's Republic of China, Determination method of benzidine

DB43/T 2197-2021 Determination of Methamphetamine and Amphetamine in Water Environment by Liquid Chromatography-Tandem Mass Spectrometry
DB43/T 2200-2021 Determination of 3,4-Methylenedioxymethamphetamine (MDMA) and 3,4-Methylenedioxyamphetamine (MDA) in Aquatic Environments by Liquid Chromatography-Tandem Mass Spectrometry
DB43/T 687-2012 Determination of Formoterol, Phenylethanolamine A, Clenbuterol, Ractopamine, Salbutamol, Terbutaline, Cimaterol in Feedstuffs by Liquid Chromatography-Tandem Mass Spectrometry
DB43/T 2194-2021 Determination of Ketamine and Norketamine in Water Environment by Liquid Chromatography-Tandem Mass Spectrometry
DB43/T 1819-2020 Determination of chlorantraniliprole, flubendiamide, tofraniliprole and flonicamid residues in pond sediment and aquatic products by liquid chromatography
DB43/T 1833-2020 Determination of Pentachlorophenol in Fishery Water by Liquid Chromatography-Tandem Mass Spectrometry
DB43/T 1654-2019 Determination of phthalate plasticizers in coated paper and cardboard by GC-MS

石家庄市质量技术监督局, Determination method of benzidine

DB1301/T 280-2018

国家质量监督检验检疫总局, Determination method of benzidine

SN/T 4953-2017 Determination of p-phenylenediamine in leather by gas chromatography-mass spectrometry
SN/T 4681-2016 Determination of saflufenacil content in saflufenacil water-dispersible granules by high performance liquid chromatography
SN/T 3028-2011 Determination of β-lactam residues in royal jelly for export by enzyme-linked immunoassay
SN/T 4014-2013 Determination of sodium benzenesulfonyl chloride and sodium p-toluenesulfonyl chloride residues in exported foods by gas chromatography-mass spectrometry/mass spectrometry
SN/T 4555.3-2016 Determination of polybrominated biphenyls and polybrominated diphenyl ethers in furniture products and their materials Part 3: High performance liquid chromatography
SN/T 4555.1-2016 Determination of polybrominated biphenyls and polybrominated diphenyl ethers in furniture products and their materials Part 1: Gas Chromatography-Mass Spectrometry
SN/T 4555.2-2016 Determination of polybrominated biphenyls and polybrominated diphenyl ethers in furniture products and their materials Part 2: Gas chromatography-electron capture detector method

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China, Determination method of benzidine

GB/T 30930-2014 Determination of 9 banned aromatic amines in cosmetics.High performance liquid chromatography-tandem mass spectrometry
GB/T 32693-2016 Determination of the aniline compounds in gasoline.By gas chromatography-mass spectrometry
GB/T 14353.16-1993 Methods for chemical analysis of copper ores lead ores and zinc ores. Determination of tellurium content. Graphite furnace atomic absorption spectrometric method
GB/T 14352.16-1993 Methods for chemical analysis of tungsten ores and molybdenum ores. Determination of selenium content-3,3'-diaminobenzidine photometric method
GB/T 16100-1995 Workplace air--Determination of aniline--Naphthyl ethylenediamine dihydrochloride spectrophotometric method
GB/T 16055-1995 Workplace air--Determination of diphenyl-diphenyl ether--Ultraviolet spectrophotometric method
GB/T 11200.1-2006 Sodium hydroxide for industrial use. Determination of sodium chlorate content. o-Tolidine spectrometric method
GB/T 14353.15-1993 Methods for chemical analysis of copper ores lead ores and zinc ores. Determination of selenium content. 3,3'-diaminobenzidine photometric method
GB/T 29610-2013(英文版) Rubber products—Determination of polybrominated biphenyls and polybrominated diphenyl ethers—Gas chromatography and mass spectrometry
GB/T 11200.1-1989 Membrane process sodium hydroxide--Determination of sodium chlorate content--Tolidine spectrometric method
GB/T 15502-1995 Air quality--Determination of aniline--N-(1-Naphthyl) ethylene diamine dihydrochloride spectrophotometric method
GB/T 13747.18-1992 Zirconium and zirconium alloys--Determination of vanadium content--N-benzoyl-N-phenylhydroxylamine spectrophotometric method
GB/T 30053-2013 Determination of Benzene, toluene and xylene in crude benzene
GB/T 8381.8-2005 Determination of Polychlorobiphenyls(PCBs)in Feeds-Gas Chromatography
GB/T 6609.10-2004 Chemical analysis methods and determination of physical performance of alumina Determination of vanadic oxide content-N-benzoyI-N-phenylhydroxylamine extraction photometric method
GB/T 17088-1997 Workplace air--Determination of N-methylaniline--Solvent desorption gas chromotrographic method
GB/T 6609.10-1986 Methods for the chemical analysis of aluminium oxide--The N-benzoyl-N-phenylhydroxylamine extraction photometric method for the determination of vanadic oxide content
GB/T 17816-1999 Determination of total ascorbic acid in feeds--o-Phenylenediamine fluorometry
GB/T 18932.17-2003 Method for the determination of sixteen sulfonamides residues in honey-LC-MS-MS method
GB/T 4325.13-1984 Method for chemical analysis of molybdenum--The glyoxal bis(2-hydroxyanil)photometric method for the determination of calcium content
GB/T 4324.13-1984 Methods for chemical analysis of tungsten--The glyoxal bis(2-hydroxyanil)photometric method for the determination of calcium content
GB/T 16102-1995 Workplace air--Determination of nitrobenzene--Naphthyl ethylenediamine dihydrochloride spectrophotometric method
GB/T 11889-1989 Water quality--Determination of aniline compounds--Spectrophotometric method with N-(1-naphthyl) ethylenediamine
GB/T 16025-1995 Workplace air--Determination of sulfur dioxide--Pararosaniline hydrochloride spectrophotometric method
GB/T 16114-1995 Workplace air--Determination of chloronitrobenzene--N-(1-naphthyl-ethylenediamine dihydrochloride spectrophotometric method
GB/T 16115-1995 Workplace air--Determination of chlorodinitrobenzene--N-(1-naphthyl)-ethylenediamine dihydrochloride spectrophotometric method
GB/T 17089-1997 Workplace air--Determination of N, N-dimethylaniline--Solvent desorption gas chromatographic method
GB/T 14327-1993 Determination of thiophene content in benzene
GB/T 14327-2009 Determination of thiophene content in benzene
GB/T 29610-2013 Rubber products.Determination of polybrominated biphenyls and polybrominated diphenyl ethers.Gas chromatography and mass spectrometry
GB/T 11897-1989 Water quality--Determination of free chlorine and total chlorine--Titrimetric method using N,N-diethyl-1,4-phenylenediamine
GB 11897-1989 Determination of free chlorine and total chlorine in water quality N,N-diethyl-1,4-phenylenediamine titration method
GB/T 16024-1995 Workplace air--Determination of ozone--Engenol-pararosaniline hydrochloride spectrophotometric method
GB/T 22331-2008 Determination of polychlorinated biphenyls residues in fishery products.Gas chromatography
GB/T 6609.18-1986 Methods for the chemical analysis of aluminium oxide--The N,N-dimethyl-P-phenylenediamine photometric method for the determination of sulfate content
GB/T 1832-1979 Determination of magnesium oxide content in tin concentrates--Xylidyl blue 2 photometric method
GB/T 29644-2013 Rubber,vulcanized.Determination the content of N- phenyl-β-naphthylamine.High performance liquid chromatogramic method
GB/T 16105-1995 Workplace air--Determination of vanadium pentoxide--N-cinnamoyl-o-tolyl-hydroxylamine spectrophotometric method
GB/T 6609.18-2004 Chemical analysis methods and determination of physical performance of alumina Determination of sulfate content-N,N-dimethyI-P-phenylenediamine spectrophotometric method
GB/T 1575-2001 Determination of yield of benzene-soluble extract in brown coal
GB/T 14326-1993 Determination of carbon disulfide content in benzene
GB/T 14326-2009 Determination of carbon disulfide content in benzene
GB/T 8033-2009 Benzol products of coal carbonization-Determination of boiling range
GB/T 8033-1987 Benzol products of coal carbonization--Determination of boiling range
GB/T 8036-2009 Benzol products of coal carbonization-Determination of color
GB/T 8036-1987 Benzol products of coal carbonization--Determination of color
GB/T 14457.8-1993 Isolate and synthetic aroma chemicals. Determination of tertiary content by acetyol chloride-dimethyl aniline method
GB/T 223.45-1994 Methods for chemical analysis of iron,steel and alloy. The cupral Separation-xylidyl blue Ⅱphotometric method for the determination of magnesium content
GB 223.45-1985 Methods for chemical analysis of iron,steel and alloy--The cupral separation-xylidyl blue 2 photometric method for the determination of magnesium content
GB/T 22940-2008 Determination of dapsone residues in honey.LC-MS-MS method
GB/T 32887-2016 Determination of polychlorinated biphenyls in electrical and electronic products by gas chromatography-mass spectrometry
GB/T 12689.10-2004 The methods for chemical analysis of zinc and zinc alloys-The determination of tin content-The phenylfluorone-cetyltrimethyla-mmonium bromide spectrophotometric method
GB/T 3209-2009 Method for determination the amount of distillation residual of benzene-type product
GB/T 3209-1982 Method for determining the amount of distillation residual of benzene--Type products
GB/T 6730.34-1986 Methods for chemical analysis of iron ores--The pyrocatechol violet-cetyl trimethylamine bromide photometric method for the determination of tin content
GB/T 12390-1990 Method for determination of thiamine (vitamin B1) in foods
GB/T 42822-2023 Determination method of primary aromatic amines in art supplies
GB 14876-1994 Method for determination of methamidophos and acephate pesticiole nesidues in foods
GB/T 8970-1988 Air quality--Determination of sulfur dioxide in a ambient air--Tetrachlomercurate(TCM), pararosaniline
GB/T 15262-1994 Ambient air-Determination of sulfur dioxide-Formaldehyde absorbing-pararosaniline spectrophotometry
GB/T 11898-1989 Water quality--Determinatoin of free chlorine and total chlorine--Spectrophotometric method useing N,N-diethyl-1,4 phenylenediamine
GB 8970-1988 Determination of sulfur dioxide in air quality Tetrachloromercuric salt - pararosaniline hydrochloride colorimetric method
GB 11898-1989 Determination of free chlorine and total chlorine in water quality N,N-diethyl-1,4-phenylenediamine spectrophotometric method
GB/T 22147-2008 Determination of salbutamol,ractopamine and clenbuterol in feeds.Liquid chromatography-mass spectrometry
GB/T 29493.1-2013 Determination of harmful substances in textile dyeing and finishing auxiliaries.Part 1:Determination of polybrominated biphenyl and polybrominated diphenyl ethers.GC/MS method
GB/T 18415-2001 Methods of determination for benzoyl peroxide in wheat flour
GB/T 8035-2009 Benzol products of coal carbonization-Determination of acid wash test
GB/T 8039-2022 Determination of total sulfur of coking benzole products
GB/T 8034-2009 Benzol products of coal carbonization-Corrosiveness to copper-Copper strip test
GB/T 8034-1987 Benzol products of coal carbonization--Corrosiveness to copper--copper strip test
GB/T 8035-1987 Benzol products of coal carbonization--Determination of acid-wash test
GB/T 15501-1995 Air quality--Determination of nitrobenzene (mononitro-and dinitro-compound)--Reduction by zine-N-(1-Naphthyl)ethylene diamine dihydrochloride spectrophotometric method
GB/T 22972-2008 Determination of thiabendazole,albendazole,fenbendazole,oxfendazole and febantel residues in milk and milk powder.HPLC-MS-MS method
GB/T 30646-2014 Determination of phthalate plasticizers content in coatings.Gas chromatography/mass spectrometry method
GB/T 27525-2011 Cigarettes.Determination of Benzo(α) pyrene in sidestream smoke. GC-MS method
GB/T 12689.6-1990 Zinc and zinc alloys--Determination of tin content--Phenylfluorone-cetyltrimethylammonium bromide spectrophotometric method
GB/T 12688.9-2011 Test method of styrene for industrial use—Part 9:Determination of trace benzene—Gas chromatographic method

CZ-CSN, Determination method of benzidine

CSN 66 8102 Cast.11-1978 Smokeless powders. Methods of testing. Determination of diphenylamine
CSN 46 7092-94-1998 Testing methods for feeding stuffs - Part 94: Determination of zoalene content
CSN 66 8026-1957
CSN 66 8102 Cast.12-1978 Smokeless powders. Methods of teating. Determination of diphenylamine and centralite I in a single sample
CSN 46 7092-74-1998 Testing methods for feeding stuffs - Part 74: Determination of robenidin content

YU-JUS, Determination method of benzidine

JUS H.G8.013-1980 Reagents. Hydrochk>ric acid. Determination offree chlorine content. o-Tolidine colorimetric method
JUS C.A1.629-1989 Copper and copper alloys. Determination of selenium content. PbenylenediaBine spectrophotometric method
JUS H.B8.606-1979 Aluminium oxide primarily used for the production of aluminium. Determination ofvanadium content. N-Benzoyl-N-phenylhydroxy lamine photometric method
JUS H.Z1.190-1984 Tastfng of industriai waters. Determination ofsulphideconttnt.Colorimetric mathod with p-amino-N:N-di- methylaniline
JUS H.Z1.178-1985 Testing of industrial vvaters. Determination of total mercury content. Specirophotometric method with diphenyl-tiocarbazone

Hebei Provincial Standard of the People's Republic of China, Determination method of benzidine

DB13/T 2894-2018 Determination of phenylethanolamine A in animal urine by enzyme-linked immunosorbent assay

BR-ABNT, Determination method of benzidine

ABNT MB-299-1962

Group Standards of the People's Republic of China, Determination method of benzidine

T/CHBAS 12-2021 Determination of N-Phenyl-bis(trifluoromethanesulfonimide)
T/SDAQI 042-2021 Determination of chlorantraniliprole residues in cereals by liquid chromatography-tandem mass spectrometric method
T/SDAQI 041-2021 Determination of chlorantraniliprole residues in fruit and vegetable by liquid chromatography -tandem mass spectrometry method
T/ZFB 0006-2020 Textiles——Determination of the content of chlorinated phenols-Gas chromatography/mass spectrum
T/CNTAC 124-2022 Textiles—Determination of poly brominated diphenyl ethers(PBDEs) and methoxylated polybrominated diphenyl ethers(Meo-PBDEs) —Gas chromatography-mass spectromety method
T/HTES 008-2022 Textiles-Determination of polybrominated diphenyl ethers and methoxylated polybrominated diphenyl ethers-Gas chromatography-mass spectromety method
T/CSES 114-2023 Ambient air—Determination of 2,2',4,4',5,5'-hexabromobiphenyl and 3,3',4,4',5,5'-hexabromobiphenyl—Gas chromatography
T/GXAS 439-2023 Detection of F-Ketamine and Nor-F-Ketamine hydrochloride in hair by liquid chromatography-tandem mass spectormetry
T/GDAEM 1-2022 Water quality-Determination of 9 polychlorinated biphenyls(PCBs)-Gas chromatography mass spectrometry
T/SBX 044-2021 Determination of Purity of Terphenyl Liquid Crystal Monomers by Gas Chromatography
T/ZNZ 189-2023 Determination of biogenic amines in aquatic products by liquid chromatography-tandem mass spectrometric method
T/SBX 070-2022 Determination of Purity of Alkyl Biphenyl Liquid Crystal Monomers by Gas Chromatography
T/SXCIES 002-2020 Crude benzol- Determination of moisture content
T/QAS 018-2020 Determination of Potassium Oxide Content in Potassium Chloride Sodium Tetraphenylborate Quaternary Ammonium Salt Volumetric Method
T/GITU 011-2021 Determination of eight chlorophenol residues in food by LC-MS/MS
T/NAIA 0198-2023 Determination of seven biogenic amines in wine by liquid chromatography-tandem mass spectrometry
T/SBX 042-2021 Determination of Purity of Bicyclohexylbiphenyl Liquid Crystal Monomers by Gas Chromatography
T/WSJD 18.11-2021 Gas Chromatography for the Determination of Dimethylaniline in the Air of the Workplace
T/SBX 069-2022 Determination of Purity of Alkylcyclohexylbiphenyl Liquid Crystal Monomers by Gas Chromatography
T/CSPCI 00001-2022

Professional Standard - Agriculture, Determination method of benzidine

GB/T 9675-1988 Determination method of polychlorinated biphenyls in seafood
农业农村部公告第600号 Determination of Clenbuterol, Ractopamine, Salbutamol, and Phenylethanolamine A in Animal Hair by Liquid Chromatography–Tandem Mass Spectrometry
JAP-071 Alachlor, isoprocarb, imine bacteria, Difencarb, isobutachlor, tebufenpyramid, paclobutrazol, bisbenzotriazole, pyriproxyfen, pyrifluorfen, chlorphenidol, butachlor, Determination method of fluoramide, pretilachlor, metolachlor, mefenacet, milobacter and
农业部2483号公告-6-2016 Determination of amantadine and rimantadine in feed by liquid chromatography-tandem mass spectrometry
NY/T 1661-2008 Determination of PCBs contents in milk and dairy products.Gas chromatography method
GB/T 5009.27-1996 Determination method of benzo(α)pyrene in food
SN/T 5066-2018 Determination of N-ethylaniline in natural rubber and its products by gas chromatography
GB/T 5009.26-1996 Determination method of N-nitrosamines in food
农业部2483号公告-4-2016 Determination of Phenobarbital Sodium in Feed by Liquid Chromatography-Tandem Mass Spectrometry
GB/T 8381.3-2023 Determination of Lincosamides in Feed by Liquid Chromatography-Tandem Mass Spectrometry
GB/T 8032-1987 Method for Determination of Density of Coking Benzene Products
SN/T 5520-2023
NY/T 2821-2015 Determination of caffeic acid phenethyl ester in propolis.Liquid chromatography tandem mass spectrometry
GB/T 5009.29-1996 Determination method of sorbic acid and benzoic acid in food
GB/T 16335-1996 Determination method of imothion residues in food
YC/T 334-2010(XG1-2011) Tobacco Industry Standard No. 1 Amendment to "Determination of Tobacco Water-based Rubber Benzene, Toluene and Xylene by Gas Chromatography-Mass Spectrometry"
水产品质量安全检验手册 4.5.2.0-2005 Chapter 4 Testing of Toxic Substances in Aquatic Products Section 5 Determination of Histamine in Aquatic Products 2. Method 2 Enzyme-linked Immunoassay

Korean Agency for Technology and Standards (KATS), Determination method of benzidine

KS I 3216-2022 Method for determination of polychlorinated biphenyl in industrial wastewater
KS I 3216-2010(2015) Method for determination of polychlorinated biphenyl in industrial wastewater
KS K 0539-2006 Determination of flexural stiffness of fabrics：Flexometer method
KS E ISO 9208:2001 Aluminium ores－Determination of vanadium content－BPHA spectrophotometric method
KS M ISO 805-2003(2018)
KS C IEC 61619-2006(2011) Contamination by polychlorinated biphenyls(PCBs)－Method of determination by capillary column gas chromatography
KS M ISO 1618-2002(2012) Aluminium oxide primarily used for the production of aluminium－Determination of vanadium content－N－Benzoyl－N－phenylhydroxylamine photometric method
KS M 1911-2002(2007) Phthalic anhydride for industrial use－Methods of test－Determination of phthalic anhydride content－Titrimetric method
KS M 3829-2003 Testing methods for total amine values of amine－based hardeners of epoxide resins
KS M 1916-2002(2007) Phthalic anhydride for industrial use－Methods of test－Determination of iron content－2,2′-bipyridyl photometric method
KS M ISO 2072-2002(2012) Aluminium oxide primarily used for the production of aluminium－Determination of zinc content－PAN photometric method
KS C IEC 62321-6-2017(2022) Determination of certain substances in electrotechnical products — Part 6: Polybrominated biphenyls and polybrominated diphenyl ethers in polymers by gas chromatography-mass spectrometry (GC-MS
KS C IEC 61619:2006 Contamination by polychlorinated biphenyls(PCBs)-Method of determination by capillary column gas chromatography
KS I ISO 17858-2009(2014) Water quality－Determination of dioxin-like polychlorinated biphenyls－Method using gas chromatography/mass spectrometry
KS I ISO 17858:2022 Water quality — Determination of dioxin-like polychlorinated biphenyls — Method using gas chromatography/mass spectrometry
KS I 3226-2009(2019) Method for determination of tetra-through octa-chlorodibenzo-p-dioxins, tetra-though octa-chlorodibenzofurans and coplanar polychlorobiphenyls in industrial water and wastewater
KS I ISO 6468:2008 Water quality-Determination of certain organochlorine insecticides, polychlorinated biphenyls and chlorobenzenes-Gas chromatographic method after liquid-liquid extraction
KS I ISO 7393-1-2007(2017) water quality－Determination of free chlorine and total chlorine－Part 1：Titrimetric method using n,n-diethyl-1,4-phenylenediamine
KS K 0734-2019 Test method for determination of arylamines content in polyester textiles
KS I ISO 6468-2008(2013) Water quality－Determination of certain organochlorine insecticides, polychlorinated biphenyls and chlorobenzenes－Gas chromatographic method after liquid-liquid extraction
KS I ISO 6468:2021 Water quality ― Determination of certain organochlorine insecticides, polychlorinated biphenyls and chlorobenzenes ―Gas chromatographic method after liquid-liquid extraction
KS M 1911-2009 Phthalic anhydride for industrial use－Methods of test－Determination of phthalic anhydride content－Titrimetric method
KS I ISO 7393-1:2007 water quality－Determination of free chlorine and total chlorine－Part 1：Titrimetric method using n,n-diethyl-1,4-phenylenediamine
KS I ISO 6767:2021 Ambient air — Determination of the mass concentration of sulfur dioxide —Tetrachloromercurate(TCM)/pararosaniline method
KS I ISO 6767-2006(2016) Ambient air－Determination of the mass concentration of sulphur dioxide [Tetrachloromercurate (TCM)/pararosaniline method]
KS I ISO 17858:2009 Water quality－Determination of dioxin-like polychlorinated biphenyls－Method using gas chromatography/mass spectrometry

Agricultural Standard of the People's Republic of China, Determination method of benzidine

农业部1879号公告-1-2012 Determination of phenylethanolamine A in animal urine.Liquid chromatography-tandem mass spectrometry
农业部1486号公告-1-2010 Determination of phenylethanolamine A in feeds. High performance liquid chromatography-tandem mass spectrometry
GB 31658.5-2021 National food safety standards for the determination of florfenicol and florfenicol amine residues in animal foods by liquid chromatography-tandem mass spectrometry
农业部781号公告-12-2006 Milk-Determination of sulfonamides residues-LC-MS/MS method
农业部第781号公告-12-2006 Determination of sulfonamides residues in milk by liquid chromatography-tandem mass spectrometry

Professional Standard - Machinery, Determination method of benzidine

JB/T 6237.11-1992 Silver powder chemical analysis method for electrical contacts Determination of nitrate content by benzidine visual colorimetry
JB/T 6237.9-2008 Test methods for chemical analysis of silver powder for electric contact material. Part 9: Determination of nitrate content
JB/T 6237.7-1992 Determination of Magnesium Content by Xylene Blue II Spectrophotometric Method for Chemical Analysis of Silver Powder Used in Electrical Contacts

British Standards Institution (BSI), Determination method of benzidine

BS 2000-2:1998 Methods of test for petroleum and its products. Petroleum products and hydrocarbon solvents. Determination of aniline point and mixed aniline point
BS EN 12766-2:2001*BS 2000-462.2:2001 Methods of test for petroleum and its products. Petroleum products and used oils. Determination of PCBs and related products. Calculation of polychlorinated biphenyl (PCB) content
BS ISO 17858:2007 Water quality - Determination of dioxin-like polychlorinated Biphenyls - Method using gas-chromatography/mass spectrometry
BS EN 1528-3:1997 Fatty food - Determination of pesticides and polychlorinated biphenyls (PCBs) - Clean-up methods
BS EN ISO 7393-1:1986 Water quality. Determination of free chlorine and total chlorine. Titrimetric method using N,N-diethyl-1,4-phenylenediamine
BS EN ISO 7393-1:2000 Water quality. Determination of free chlorine and total chlorine. Titrimetric method using N,N-diethyl-1,4-phenylenediamine
BS EN 61619:1997 Insulation liquids. Contamination by polychlorinated biphenyls (PCBs). Method of determination by capillary column gas chromatography
BS ISO 14849:1999 Plastics - Phenol-formaldehyde mouldings - Determination of free ammonia and ammonium compounds - Indophenol method
ISO 23256:2023 Water quality. Detection of selected congeners of polychlorinated dibenzo-p-dioxins and polychlorinated biphenyls. Method using a flow immunosensor technique
BS ISO 23256:2023 Water quality. Detection of selected congeners of polychlorinated dibenzo-p-dioxins and polychlorinated biphenyls. Method using a flow immunosensor technique
BS EN ISO 6468:1997 Water quality. Determination of certain organochlorine insecticides, polychlorinated biphenyls and chlorobenzenes. Gas chromatographic method after liquid-liquid extraction
BS ISO 15819:2008 Cosmetics - Analytical methods - Nitrosamines - Detection and determination of N-nitrosodiethanolamine (NDELA) in cosmetics by HPLC-MS-MS
BS ISO 15819:2014 Cosmetics. Analytical methods. Nitrosamines: Detection and determination of N-nitrosodiethanolamine (NDELA) in cosmetics by HPLC-MS-MS
BS EN ISO 787-28:2020 General methods of tests for pigments and extenders - Determination of total content of polychlorinated biphenyls (PCB) by dissolution, cleanup and GC-MS

Professional Standard - Commodity Inspection, Determination method of benzidine

SN/T 2463-2010 Method for the determination of polychlorinated biphenyls (PCBs) in textiles-GC method
SN/T 2038-2007 Determination of aniline and 4,4｀-methylenedianiline from plastic utensils in food simulants-HPLC/UV
SN/T 3918-2014 Determination of polychlorinated terphenyls in plastics and plastic products.Gas chromatograph method
SN/T 2547-2010 Determination of polybromobiphenyls and polybromodiphenyl ethers in plastic-GC/MS method
SN/T 2005.1-2005 Determination of polybromobiphenyls and polybromobiphenyl ethers in electrical and electronic equipment-Part 1:High performance liquid chromatography method
SN/T 2005.2-2005 Determination of polybromobiphenyls and polybromobiphenyl ethers in electrical and electronic equipment-Part 2:GC-MS method
SN/T 2456-2010 Determination of propham residues in food for import and export-GC-MS method
SN/T 2107-2008 Determination of monoethanolamine,diethanolamine and triethanolamine in cosmetics for import and export
SN/T 4133-2015 Determination of phthalate plasticizers in toys.LC-MS/MS method
SN/T 1792-2014 Determination of polychlorinated biphenyls in electrical insulating oil.Gas chromatography
SN/T 2883-2011 Determination of polybromobiphenyls in imported and exported box.Gas chromatography-mass spectrography method
SN/T 3622-2013 Determination of 2-chloroaniline in foodstuffs for export.LC/MS/MS method
SN/T 0834-1999 Method for the determination of industrial isopropylamine for export
SN/T 3143-2012 Determination of phenylamide pesticides residues in foods for export.Gas chromatography-mass spectrometry
SN/T 1969-2007 Determination of bifenthrin residue in food for import and export.GC-MS method
SN/T 1741-2006 Determination of alachlor residues in foods for import and export-Gas chromatography mass spectrometry method
SN/T 2003.2-2006 Determination of polybrominatedbiphenyls and polybrominatedbiphenyl ether in electrical and electronic equipments - Part 2: Qualitative screening by infra-red spectrometric method
SN/T 0833-1999 Method for the determination of industrial isobutybenzene for export
SN/T 3587-2013 Determination of N, N-dimethylformamide and N, N-dimethylacetamide in textile for import and export.Gas chromatography-Mass method

National Health Commission of the People's Republic of China, Determination method of benzidine

GBZ/T 311-2018 Determination of Toluenediamine in Urine by Gas Chromatography
GB 23200.61-2016 National food safety standards-Determination of propham residue in food Gas chromatography-mass spectrometry
GB 23200.67-2016 National food safety standards－ Determination of propyzamide residue in foods Gas chromatography-mass spectrometry
GB 23200.76-2016 National food safety standards— Determination of flubendiamide residue in foods Liquid chromatography - mass spectrometry
GB 23200.69-2016 National food safety standards－ Determination of dinitroaniline pesticides residue in foods Liquid chromatography - mass spectrometry

Professional Standard - Hygiene , Determination method of benzidine

WS/T 159-1999 Workplace air.Determination of trichloroaniline.Gas chromatographic method
WS/T 134-1999 Workplace air.Determination of biphenyl-phenyl ether.Solvent desorption gas chromatographic method
WS/T 65-1996 Urine.Determination of chlor dimeform and 4-chloro-0-toluidine.Spectrophotometric method
WS/T 142-1999 Workplace air.Determination aniline.Solvent desorption gas chromatographic method
WS/T 148-1999 Workplace air.Determination of p-nitroaniline.High-performance liquid chromatography method
WS/T 170-1999 Workplace air.Determination of aniline.Solvent desorption high performance liquid chromatographic method
WS/T 51-1996 Exhaled air.Determination of benzene.Gas chromatographic method
WS/T 50-1996 Urine.Determination of phenol.Gas chromatographic method.II FFAP column
WS/T 168-1999 Workplace air.Determination of diphenyl methane 4,4'-di-iso-cyanate-N-(1-naphthyl) ethylenediamine dihydrochloride spectrophotometric method
WS/T 54-1996 Urine.Determination of phenylglyoxylic acid and mandelic acid.High performance Iiquid chromatographic method

American Society for Testing and Materials (ASTM), Determination method of benzidine

ASTM D4936-10(2019) Standard Test Method for Mercaptobenzothiazole Sulfenamide Assay by Reduction/Titration
ASTM D4937-96(2021) Standard Test Method for p-Phenylenediamine Antidegradants Purity by Gas Chromatography
ASTM D6160-98(2008) Standard Test Method for Determination of Polychlorinated Biphenyls (PCBs) in Waste Materials by Gas Chromatography
ASTM D4936-10(2023) Standard Test Method for Mercaptobenzothiazole Sulfenamide Assay by Reduction/Titration
ASTM D4937-96(2001) Standard Test Method for p-Phenylenediamine Antidegradants Purity by Gas Chromatography
ASTM E440-72(1983)e1 Test Method for Traces of Peroxides in Organic Solvents with N, N=+ -Diphenyl-P-Phenylenediamine
ASTM D6160-98(2003)e1 Standard Test Method for Determination of Polychlorinated Biphenyls (PCBs) in Waste Materials by Gas Chromatography
ASTM D6160-98 Standard Test Method for Determination of Polychlorinated Biphenyls (PCBs) in Waste Materials by Gas Chromatography
ASTM D4937-96(2012) Standard Test Method for p-Phenylenediamine Antidegradants Purity by Gas Chromatography
ASTM D6160-21 Standard Test Method for Determination of Polychlorinated Biphenyls (PCBs) in Waste Materials by Gas Chromatography
ASTM D4937-96(2017) Standard Test Method for p-Phenylenediamine Antidegradants Purity by Gas Chromatography
ASTM D6160-98(2013) Standard Test Method for Determination of Polychlorinated Biphenyls (PCBs) in Waste Materials by Gas Chromatography
ASTM D6160-98(2017) Standard Test Method for Determination of Polychlorinated Biphenyls (PCBs) in Waste Materials by Gas Chromatography
ASTM D4936-10 Standard Test Method for Mercaptobenzothiazole Sulfenamide Assay by Reduction/Titration
ASTM D1579-97 Standard Test Method for Filler Content of Phenol, Resorcinol, and Melamine Adhesives
ASTM D1579-01 Standard Test Method for Filler Content of Phenol, Resorcinol, and Melamine Adhesives
ASTM D5666-95(2000) Standard Test Method for P-Phenylenediamine Antidegradants-Purity by High Performance Liquid Chromatography
ASTM D4936-96 Standard Test Method for Mercaptobenzothiazole Sulfenamide Assay by Reduction/ Titration
ASTM D4936-96(2001) Standard Test Method for Mercaptobenzothiazole Sulfenamide Assay by Reduction/ Titration
ASTM D2074-07 Standard Test Methods for Total, Primary, Secondary, and Tertiary Amine Values of Fatty Amines by Alternative Indicator Method
ASTM D2074-07(2013) Standard Test Methods for Total, Primary, Secondary, and Tertiary Amine Values of Fatty Amines by Alternative Indicator Method
ASTM D7599-16 Standard Test Method for Determination of Diethanolamine, Triethanolamine, N-Methyldiethanolamine and N-Ethyldiethanolamine in Water by Single Reaction Monitoring Liquid Chromatography/Tandem Mass S
ASTM D7599-09e1 Standard Test Method for Determination of Diethanolamine, Triethanolamine, N-Methyldiethanolamine and N-Ethyldiethanolamine in Water by Single Reaction Monitoring Liquid Chromatography/Tandem Mass Sp
ASTM D4936-05 Standard Test Method for Mercaptobenzothiazole Sulfenamide Assay by Reduction/Titration
ASTM D8456-22 Standard Test Method for Determination of Nitrosamines in Water by Liquid Chromatography Tandem Mass Spectrometry (LC-MS/MS)
ASTM D1903-08(2017) Standard Practice for Determining the Coefficient of Thermal Expansion of Electrical Insulating Liquids of Petroleum Origin, and Askarels
ASTM D2074-92(1998) Standard Test Methods for Total, Primary, Secondary, and Tertiary Amine Values of Fatty Amines by Alternative Indicator Method
ASTM D207-55(1995)e1 Test method for determination of total amine value, primary amine value, secondary amine value and tertiary amine value in fatty amines by alternating indicator method
ASTM D1582-98(2004) Standard Test Method for Nonvolatile Content of Liquid Phenol, Resorcinol, and Melamine Adhesives
ASTM D1582-98 Standard Test Method for Nonvolatile Content of Liquid Phenol, Resorcinol, and Melamine Adhesives
ASTM D7599-16(2017) Standard Test Method for Determination of Diethanolamine, Triethanolamine, N-Methyldiethanolamine and N-Ethyldiethanolamine in Water by Single Reacti
ASTM D1582-98(2017) Standard Test Method for Nonvolatile Content of Liquid Phenol, Resorcinol, and Melamine Adhesives
ASTM D1582-98(2023) Standard Test Method for Nonvolatile Content of Liquid Phenol, Resorcinol, and Melamine Adhesives
ASTM D4936-10(2015) Standard Test Method for Mercaptobenzothiazole Sulfenamide Assay by Reduction/Titration
ASTM D4937-96e1 Standard Test Method for p-Phenylenediamine Antidegradants Purity by Gas Chromatography
ASTM D4937-96(2006)e1 Standard Test Method forp-Phenylenediamine Antidegradants Purity by Gas Chromatography
ASTM D7599-09 Standard Test Method for Determination of Diethanolamine, Triethanolamine, N-Methyldiethanolamine and N-Ethyldiethanolamine in Water by Single Reaction Monitoring Liquid Chromatography/Tandem Mass Sp
ASTM D7304-06 Standard Test Method for Determination of Denatonium Ion in Engine Coolant by HPLC
ASTM D7599-09e2 Standard Test Method for Determination of Diethanolamine, Triethanolamine, N-Methyldiethanolamine and N-Ethyldiethanolamine in Water by Single Reaction Monitoring Liquid Chromatography/Tandem Mass Sp
ASTM D7771-13 Standard Test Method for Determination of Benzo-alpha;-Pyrene lpar;BaPrpar; Content in Carbon Black
ASTM D5666-95(2019) Standard Test Method for Rubber Chemical Antidegradants—Purity of p-Phenylenediamine (PPD) Antidegradants by High Performance Liquid Chromatography
ASTM D789-04 Standard Test Method for Determination of Relative Viscosity of Polyamide (PA)
ASTM D789-07e1 Standard Test Methods for Determination of Solution Viscosities of Polyamide (PA)
ASTM D3606-20e1 Standard Test Method for Determination of Benzene and Toluene in Spark Ignition Fuels by Gas Chromatography
ASTM D3606-20 Standard Test Method for Determination of Benzene and Toluene in Spark Ignition Fuels by Gas Chromatography
ASTM D3606-22 Standard Test Method for Determination of Benzene and Toluene in Spark Ignition Fuels by Gas Chromatography
ASTM D3606-17 Standard Test Method for Determination of Benzene and Toluene in Spark Ignition Fuels by Gas Chromatography

Tianjin Provincial Standard of the People's Republic of China, Determination method of benzidine

DB12/T 988-2020 Determination of diethyl diethylhexanoate and thiadiuron pesticide residues in fruits and vegetables by liquid chromatography-tandem mass spectrometry

Association Francaise de Normalisation, Determination method of benzidine

NF T67-123:1968 Aromatic hydrocarbons. Testing methods for solvent naphthas. Determination of "aniline point in mixtures".
NF T20-209:1973 Aluminium oxide primarily used for the production of aluminium. Determination of vanadium. N-benzoyl-n-phenyl-hydroxylamine photometric method.
NF V18-246:2012 Animal feeding stuffs - Determination of dioxins and dioxin-like PCBs by GC/HRMS and of indicator PCBs by GC/HRMS.
NF EN 1528-3:1997 Aliments gras - Dosage des pesticides et des polychlorobiphényles (PCB) - Partie 3 : méthode de purification.
NF EN 61619:1997 Isolants liquides - Contamination par les polychlorobiphényles (PCB) - Méthode de détermination par chromatographie en phase gazeuse sur colonne capillaire.
NF EN 12766-1:2000 Produits pétroliers et huiles usagées - Détermination des PCB et produits connexes - Partie 1 : séparation et dosage d'une sélection de congénères de PCB par chromatographie en phase gazeuse (CG) avec utilisation d'un détecteur à capture d'...
NF EN 12766-3:2005 Produits pétroliers et huiles usagées - Détermination des PCB et produits connexes - Partie 3 : détermination et quantification des polychloroterphényles (PCT) et des polychlorobenzyltoluènes (PCBT) par chromatographie en phase gazeuse (CPG) avec...
NF EN IEC 62321-3-3:2021 Détermination de certaines substances dans les produits électrotechniques - Partie 3-3 : détection - Diphényles polybromés, diphényléthers polybromés et phtalates dans les polymères par chromatographie en phase gazeuse-spectrométrie de masse ...
NF V18-246*NF EN 16215:2020 Animal feeding stuffs : methods of sampling and analysis - Determination of dioxins and dioxin-like PCBs and of indicator PCBs by GC/HRMS
NF C05-100-6*NF EN 62321-6:2015 Determination of certain substances in electrotechnical products - Part 6 : polybrominated biphenyls and polybrominated diphenyl ethers in polymers by gas chromatography-mass spectrometry (GC-MS)
NF T90-037-1*NF EN ISO 7393-1:2000 Water quality - Determination of free chlorine and total chlorine - Part 1 : titrimetric method using N, N-diethyl-1,4-phenylenediamine.
NF V03-080-3*NF EN 1528-3:1997 Fatty food. Determination of pesticides and polychlorinated biphenyls (pcbs). Part 3 : clean-up methods.
NF T90-120*NF EN ISO 6468:1997 Water quality - Determination of certain organochlorine insecticides, polychlorinated biphenyls and chlorobenzenes - Gas chromatographic method after liquid-liquid extraction.
NF EN 62321-6:2015 Détermination de certaines substances dans les produits électrotechniques - Partie 6 : diphényles polybromés et diphényléthers polybromés dans des polymères par chromatographie en phase gazeuse-spectrométrie de masse (GC-MS)
NF T75-631:2008 Cosmetics - Analytical methods - Nitrosamines : Detection and determination of N-nitrosodiethanolamine (NDELA) in cosmetics by HPLC-MS-MS.
NF T75-631*NF ISO 15819:2014 Cosmetics - Analytical methods - Nitrosamines : detection and determination of N-nitrosodiethanolamine (NDELA) in cosmetics by HPLC-MS-MS
NF EN ISO 7393-1:2000 Qualité de l'eau - Dosage du chlore libre et du chlore total - Partie 1 : méthode titrimétrique à la N, N-diéthylphénylène-1,4 diamine

Professional Standard - Coal, Determination method of benzidine

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

Professional Standard - Urban Construction, Determination method of benzidine

CJ/T 63-1999 Municipal sewage.Determination of aniline compounds.AZO spectrophotometric method
CJ 26.13-1991 Municipal sewage water quality test method Determination of standard aniline Azo spectrophotometric method

Professional Standard - Light Industry, Determination method of benzidine

QB/T 1863-1993 Determination of p-phenylenediamine in hair dye by gas chromatography

Sichuan Provincial Standard of the People's Republic of China, Determination method of benzidine

DB51/T 1919-2014 Determination of N-Methylaniline in Gasoline by Infrared Spectrometry
DB51/T 1175-2010 Determination of phenylethanolamine A in feed by high performance liquid chromatography
DB51/T 2182-2016 Determination of Aniline Content in Motor Gasoline by Gas Chromatography
DB51/T 2105.2-2016 Footwear chemical test methods for the determination of N-nitrosamines

German Institute for Standardization, Determination method of benzidine

DIN 38407-16:1999 German standard methods for the examination of water, waste water and sludge - Jointly determinable substances (group F) - Part 16: Determination of aniline derivates by gas chromatography (F 16)
DIN 38407-16:1999-06 German standard methods for the examination of water, waste water and sludge - Jointly determinable substances (group F) - Part 16: Determination of aniline derivates by gas chromatography (F 16)
DIN 38407-3:1998-07 German standard methods for the determination of water, waste water and sludge - Jointly determinable substances (group F) - Part 3: Determination of polychlorinated biphenyls (F 3)
DIN EN 1528-3:1997-01 Fatty food - Determination of pesticides and polychlorinated biphenyls (PCBs) - Part 3: Clean-up methods; German version EN 1528-3:1996
DIN EN 12766-3:2005 Petroleum products and used oils - Determination of PCBs and related products - Part 3: Determination and quantification of polychlorinated terphenyls (PCT) and polychlorinated benzyl toluenes (PCBT) content by gas chromatography (GC) using an electron ca
DIN EN 12766-3 Berichtigung 1:2007 Petroleum products and used oils - Determination of PCBs and related products - Part 3: Determination and quantification of polychlorinated terphenyls (PCT) and polychlorinated benzyl toluenes (PCBT) content by gas chromatography (GC) using an electron ca

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, Determination method of benzidine

GB/T 34270-2017 Determination of polychorinated biphenyls and hexachlorobenzene in feeds—Gas chromatography
GB/T 1575-2018 Determination of yield of benzene-soluble extract in brown coals
GB/T 34842-2017 Footwear—Chemical tests—Determination of formamide
GB/T 33649-2017 Determination of oxygenates and aniline compounds in motor gasoline—Gas chromatography

海关总署, Determination method of benzidine

SN/T 5319-2021 Determination of polychlorinated biphenyls in leather using gas chromatography-mass spectrometry
SN/T 5308-2021 Determination of benzene, toluene, chlorobenzene, p-xylene and o-xylene in food grade lubricants by headspace gas chromatography-mass spectrometry

Inner Mongolia Provincial Standard of the People's Republic of China, Determination method of benzidine

DB15/T 2995-2023 Determination of Ascorbic Acid in Forage Grass by O-Phenylenediamine Fluorescence Method
DB15/T 1217-2017 Determination of Amantadine in Feed by High Performance Liquid Chromatography-Tandem Mass Spectrometry

Jiangsu Provincial Standard of the People's Republic of China, Determination method of benzidine

DB32/T 2206-2012 Determination of polychlorinated biphenyls in soil by gas chromatography
DB32/T 3844-2020 Determination of content of bifenthrin preparation for termite control by gas chromatography
DB32/T 1163-2007 Determination of amantadine residues in chicken liver by liquid chromatography-tandem mass spectrometry

International Organization for Standardization (ISO), Determination method of benzidine

ISO 9208:1989 Aluminium ores; determination of vanadium content; BPHA spectrophotometric method
ISO 6468:1996 Water quality - Determination of certain organochlorine insecticides, polychlorinated biphenyls and chlorobenzenes - Gas chromatographic method after liquid-liquid extraction
ISO 1389-11:1977 Phthalic anhydride for industrial use — Methods of test — Part 11: Determination of iron content — 2,2'- Bipyridyl photometric method
ISO 7393-1:1985 Water quality; Determination of free chlorine and total chlorine; Part 1 : Titrimetric method using N,N-diethyl-1,4-phenylenediamine
ISO 15819:2008 Cosmetics - Analytical methods - Nitrosamines: Detection and determination of N-nitrosodiethanolamine (NDELA) in cosmetics by HPLC-MS-MS
ISO 15819:2014 Cosmetics - Analytical methods - Nitrosamines: Detection and determination of N-nitrosodiethanolamine (NDELA) in cosmetics by HPLC-MS-MS

Professional Standard - Tobacco, Determination method of benzidine

YC/T 334-2010 Determination of benzene,toluene and xylene in water-borne adhesives for cigarette-Gas chromatography-mass spectrometry method
YC/T 373-2010 Determination of benzene,toluene,ethylbenzene and xylene in polypropylene fiber tow and polypropylene fiber tow filter rod.Gas chromatography-mass spectrometry method
YC/T 333-2010 Determination of phthalates in water-borne adhesives for cigarette-Gas chromatography-mass spectrometry method

Professional Standard - Ferrous Metallurgy, Determination method of benzidine

YB/T 5023-1993 Method for the determination of the distillation process of crude benzol
YB/T 5024-1993 Method for the determination of the distillation process of refined heavy benzol
YB/T 5025-1993 Method for Determination of Content of Refined Bencoumarone-Indene

PT-IPQ, Determination method of benzidine

NP 3257-1988 Animal feeding stuffs Determination of ethopabate content Spectrophotometric method

农业农村部, Determination method of benzidine

NY/T 3140-2017 Determination of phenylethanolamine A in feed by high performance liquid chromatography
NY/T 3167-2017 Determination of sulfonamides in organic fertilizers by liquid chromatography-tandem mass spectrometry

Professional Standard - Chemical Industry, Determination method of benzidine

HG/T 2235-1991 Method for determination of melting point of polyamide
HG 5-1342-1980 Determination method of free phenol content of phenolic resin
HG/T 2022-1991 Determination of free chlorine and total chlorine in industrial circulating cooling water N,N-Diethyl-1,4-Phenylenediamine titration

Professional Standard - Automobile, Determination method of benzidine

QC/T 944-2013 The methods of polybrominated biphenyls and polybrominated diphenyl ethers in automotive materials

国家市场监督管理总局、中国国家标准化管理委员会, Determination method of benzidine

GB/T 39765-2021 Determination of benzene,methylbenzene,ethylbenzene,dimethybenzene in stationery—Gas chromatographic method
GB/T 37638-2019 Determination of polybrominated biphenyls and polybrominated biphenyl ethers in plastic products—High performance liquid chromatography
GB/T 37639-2019 Determination of polybrominated biphenyls and polybrominated diphenyl ethers in plastic products—Gas chromatography and mass spectrometry
GB/T 39183-2020 Determination of the migration quantity of nitrosamines in consumer products—Gas chromatography-tandem mass spectrometry

PL-PKN, Determination method of benzidine

PN Z04031-08-1992 Air purity protection Tests for content of anilin? and its derivatives Determination of p-chloronitroaniline in work places by gas chromatography
PN Z04145-02-1985 Air purity protection Tests for benzidine Determination of benzidine in work places by colorimetric method
PN C04600 ArkusZ14-1974 Water and waste water Tests for ehlorine and his com- pounds content and ehlorine demand Determination of ehlorine dioxideby colorimetric orthotolidine-arse- nite method
PN Z04177-02-1987 Air purity protection ests for 7V-phenyInaphtylamine etermination of JV-phenyl-2-naphtyl- mine at \vork places by colorimetric ethod
PN Z04031-04-1988 Air purity protection Tests for anilin? and its compounds Determination of o-nitroaniline in work places by gas chromatography with sample enrichment
PN Z04190-02-1988 Air purity protection ests for nitrodiphenyl etermination of 4-nitrodiphenyl at ork places by gas chromatography ith sample enrichment
PN Z04145-03-1985 Air purity protection Tests for benzidine Determination of benzidine in work places by high performance liquid chromatography
PN C45301-08-1993 Caprolactam. Method of test. Determination of crystalizing point
PN C45301-02-1993 Caprolactam. Method of test. Determination of permanganate index. Spectrometric method
PN C04660-1972 Method of determination of phenoxyacetic herb?cide residues in soil
PN Z04194-02-1988 Air punty protection Tests for phthalic anhydride Determination of phthalic anhydride in work places by spectrophotometric method with hydroxylamine hydrochloride and ferric chloride

Liaoning Provincial Standard of the People's Republic of China, Determination method of benzidine

DB21/T 1834-2010 Determination of melamine in feed by enzyme-linked immunosorbent assay

Jiangxi Provincial Standard of the People's Republic of China, Determination method of benzidine

DB36/T 484-2005 Determination of albuterol in feed by ELISA
DB36/T 485-2005 Determination of Salbutamol in Pig Urine-ELISA
DB36/T 1394-2021 Determination of amantadine, rimantadine and morpholinidine residues in livestock and poultry feathers (hair) by liquid chromatography-tandem mass spectrometry

中华人民共和国环境保护部, Determination method of benzidine

GB 11889-1989 Water quality-Determination of auiline compounds-Spectrophotometric method with N-(1-naphthyl)echylenediamine

VN-TCVN, Determination method of benzidine

TCVN 1674-1-2009 Iron ores.Determination of vanadium.Prat1:BPHA spectrophotometric method
TCVN 5158-1990 Tea.Method for residue determination of metamidophos
TCVN 3707-1990 Aquatic products.Method for the determination of amine ammonia nitrogen content

Professional Standard - Geology, Determination method of benzidine

DZ/T 0064.67-1993 Groundwater quality testing method Determination of sulfide by p-aminodimethylaniline colorimetric method
DZ/T 0064.67-2021 Methods of analysis of groundwater quality - Part 67: Determination of sulfides by p-aminodimethylaniline spectrophotometric method

Danish Standards Foundation, Determination method of benzidine

DS/EN 61619:1998 Insulating liquids - Contamination by polychlorinated biphenyls (PCBs) - Methods of determination by capillary column gas chromatography
DS/ISO 17858:2007 Water quality - Determination of dioxin-like polychlorinated biphenyls - Method using gas chromatography/mass spectrometry
DS/EN 1528-3:1997 Fatty food - Determination of pesticides and polychlorinated biphenyls (PCBs) - Part 3: Clean-up methods
DS/EN 12766-3/AC:2007 Petroleum products and used oils - Determination of PCBs and related products - Part 3: Determination and quantification of polychlorinated terphenyls (PCT) and polychlorinated benzyl toluenes (PCBT) content by gas chromatography (GC) using an electron ca
DS/EN 12766-3:2005 Petroleum products and used oils - Determination of PCBs and related products - Part 3: Determination and quantification of polychlorinated terphenyls (PCT) and polychlorinated benzyl toluenes (PCBT) content by gas chromatography (GC) using an electron ca
DS/EN ISO 6468:2000 Water quality - Determination of certain organochlorine insecticides, polychlorinated biphenyls and chlorobenzenes - Gas chromatographic method after liquid-liquid extraction
DS/EN ISO 7393-1:2003 Water quality - Determination of free chlorine and total chlorine - Part 1: Titrimetric method using N,N-diethyl-1,4-phenylenediamine

Anhui Provincial Standard of the People's Republic of China, Determination method of benzidine

DB34/T 1374-2011 Determination of Melamine in Raw Milk Enzyme Linked immunosorbent assay
DB34/T 819-2008 Determination of Ractopamine in Feed - ELISA
DB34/T 1533-2011 Determination of phenylenediamines in oxidation hair dyes Gas Chromatography-Mass Spectrometry method
DB34/T 2508-2015 Determination of Esters and Methylanilines in Gasoline by Gas Chromatography
DB34/T 827-2008 Determination of Ractopamine Residues in Urine-Enzyme-Linked Immunosorbent Assay
DB34/T 2407-2015 Determination of Chlorantraniliprole Residues in Rice by High Performance Liquid Chromatography
DB34/T 3100-2018 Determination of Polybrominated Diphenyl Ethers in Drinking Water Source Water by Gas Chromatography-Tandem Mass Spectrometry
DB34/T 3368.3-2019 Analytical methods of hazardous substances in printed circuit boards - Part 3: Determination of polybrominated biphenyls and polybrominated diphenyl ethers by gas chromatography-mass spectrometry
DB34/T 3649-2020 Determination of sulfa drug residues in aquatic products by enzyme-linked immunosorbent assay
DB34/T 825-2008 Determination of Ractopamine Residues in Animal Tissues-ELISA

UNKNOWN, Determination method of benzidine

Guangxi Provincial Standard of the People's Republic of China, Determination method of benzidine

DB45/T 1013-2014 Determination of Phenylethanolamine A in Urine by Liquid Chromatography-Mass Spectrometry/Mass Spectrometry
DB45/T 1244-2015 Determination of Aniline Compounds in Gasoline by Gas Chromatography-Mass Spectrometry

Canadian General Standards Board （CGSB), Determination method of benzidine

CGSB 1-GP-71 METH 65.1-1995 Methods of Testing Paints and Pigments Detection of Benzene (Benzol)

Xinjiang Provincial Standard of the People's Republic of China, Determination method of benzidine

DB65/T 3554-2013 Determination of albuterol in animal urine by enzyme-linked immunosorbent assay

TR-TSE, Determination method of benzidine

TS 1871-1975 ALUMINIUM OXIDE PRIMARILY USED FOR THE PRODUCTION OF ALUMINIUM DETERMINATION OF VANAD?UM CONTENT PHOTOMETRIC METHOD USING N-BENZOYL-N-PHENYLHYDROXYLAMINE

Zhejiang Provincial Standard of the People's Republic of China, Determination method of benzidine

DB33/T 2024-2017 Methods for the detection of amphetamine-type stimulants, morphine, 6-monoacetylmorphine and ketamine in human hair

Association of Official Analytical Chemists (AOAC), Determination method of benzidine

AOAC Official Method 974.21 Determination of polychlorinated biphenyls in paper and cardboard by gas chromatography

Lithuanian Standards Office , Determination method of benzidine

LST EN 1528-3-2000 Fatty food - Determination of pesticides and polychlorinated biphenyls (PCBs) - Part 3: Clean-up methods
LST EN 12766-3-2005 Petroleum products and used oils - Determination of PCBs and related products - Part 3: Determination and quantification of polychlorinated terphenyls (PCT) and polychlorinated benzyl toluenes (PCBT) content by gas chromatography (GC) using an electron ca
LST EN 12766-3-2005/AC-2007 Petroleum products and used oils - Determination of PCBs and related products - Part 3: Determination and quantification of polychlorinated terphenyls (PCT) and polychlorinated benzyl toluenes (PCBT) content by gas chromatography (GC) using an electron ca

AENOR, Determination method of benzidine

UNE-EN 1528-3:1997 Fatty food - Determination of pesticides and polychlorinated biphenyls (PCBs) - Part 3: Clean-up methods
UNE-EN 12766-3:2005 Petroleum products and used oils - Determination of PCBs and related products - Part 3: Determination and quantification of polychlorinated terphenyls (PCT) and polychlorinated benzyl toluenes (PCBT) content by gas chromatography (GC) using an electron ca
UNE-EN 61619:1998 INSULATING LIQUIDS. CONTAMINATION BY POLYCHLORINATED BIPHENYLS (PCBS). METHOD OF DETERMINATION BY CAPILLARY COLUMN GAS CHROMATOGRAPHY.
UNE-EN 12766-1:2000 PETROLEUM PRODUCTS AND USED OILS- DETERMINATION OF PCBs AND RELATED PRODUCTS - PART 1: SEPARATION AND DETERMINATION OF SELECTED PCB CONGENERS BY GAS CHROMATOGRAPHY (GC) USING AN ELECTRON CAPTURE DETECTOR (ECD).

Military Standard of the People's Republic of China-General Armament Department, Determination method of benzidine

GJB 770.310-1993 Test methods for gunpowder analysis: Determination of dinitrotoluene, dibutyl phthalate and 2-nitrodiphenylamine in double base powder by gas chromatography
GJB 770.307-1989 Test methods for gunpowder analysis: Determination of the content of diphenylamine and No. 2 fixative in propellants Steam distillation-spectrophotometry
GJB 770.305-1989 Test methods for gunpowder analysis: Determination of nitroglycerin, No. 2 neutralizing agent, diphenylamine, dibutyl phthalate and dinitrotoluene in double-base propellants by reversed-phase liquid chromatography
GJB 533.33-1991 Detection method of air components in submarine cabin. Determination of cumene, n-propylbenzene, tert-butylbenzene, n-butylbenzene, 1,3,5-trimethylbenzene (including other butylbenzene) and 1,2,4-trimethylbenzene in gas phase. chromatography
GJB 533.28-1988 Detection methods for 45 components of submarine cabin air. Determination of benzene, toluene, ethylbenzene, xylene, and 1,2-dichloroethane content by gas chromatography.

Chongqing Provincial Standard of the People's Republic of China, Determination method of benzidine

DB50/T 1367-2023 Water Quality Determination of Sulfonamide Antibiotics by Liquid Chromatography-Tandem Mass Spectrometry

工业和信息化部, Determination method of benzidine

YB/T 917-2017 Determination of vanadium content in carbon materials using 3,3-dimethylbinaphthylamine colorimetric method
QB/T 5294-2018 Determination of brominated and chlorinated salicylanilide in cosmetics by high performance liquid chromatography

国家能源局, Determination method of benzidine

NB/SH/T 0991-2019 Determination of aniline compounds in gasoline by gas chromatography-nitrogen chemiluminescence detection method

Qinghai Provincial Standard of the People's Republic of China, Determination method of benzidine

DB63/T 1423-2015 Determination of Potassium Oxide Content in Potassium Nitrate Sodium Tetraphenylborate Quaternary Ammonium Salt Volumetric Method
DB63/T 1318-2014 Determination of Potassium Oxide Content in Potassium Chloride Sodium Tetraphenylborate Quaternary Ammonium Salt Volumetric Method
DB63/T 1634-2018 Determination of Potassium Chloride Content in Molten Salt Electrolyte - Tetraphenylborate Sodium Quaternary Ammonium Salt Volumetric Method

Professional Standard - Non-ferrous Metal, Determination method of benzidine

YS/T 981.4-2014 Method for chemical analysis of high pure indium.Determination of tin content.Benzfluorenone-cetyltrimethylammonium bromide spectrophotometric method
YS/T 74.9-1994 Cadmium Chemical Analysis Method Lufluenone-Bromocetyltrimethylamine Spectrophotometric Determination of Tin Content
YS/T 226.3-1994 Determination of tin content in selenium (lumenone-bromohexadecyltrimethylamine absorptiometry)
YS/T 276.2-2011 Methods for chemical analysis of indium.Part 2:Determination of tin content.Phenylfluorone-cetyltrimethyl ammonium bromide spectrophotometry
YS/T 230.7-1994 High pure indium--Determination of tin content

ES-UNE, Determination method of benzidine

UNE-EN 61619:2004 ERRATUM Insulating liquids - Contamination by polychlorinated biphenyls (PCBs) - Method of determination by capillary column gas chromatography

KR-KS, Determination method of benzidine

KS I ISO 17858-2022 Water quality — Determination of dioxin-like polychlorinated biphenyls — Method using gas chromatography/mass spectrometry
KS I ISO 6468-2021 Water quality ― Determination of certain organochlorine insecticides, polychlorinated biphenyls and chlorobenzenes ―Gas chromatographic method after liquid-liquid extraction
KS I ISO 6767-2021 Ambient air — Determination of the mass concentration of sulfur dioxide —Tetrachloromercurate(TCM)/pararosaniline method

Henan Provincial Standard of the People's Republic of China, Determination method of benzidine

DB41/T 550-2008 Determination of Melamine in Feed by Liquid Chromatography-Tandem Mass Spectrometry

Jilin Provincial Standard of the People's Republic of China, Determination method of benzidine

DB22/T 2966-2019 Determination of methamphetamine in human urine by liquid chromatography-high resolution mass spectrometry

International Electrotechnical Commission (IEC), Determination method of benzidine

IEC 62321-6:2015 Determination of certain substances in electrotechnical products - Part 6: Polybrominated biphenyls and polybrominated diphenyl ethers in polymers by gas chromatography-mass spectrometry (GC-MS)
IEC 62321-12:2023 Determination of certain substances in electrotechnical products - Part 12: Simultaneous determination – Polybrominated biphenyls, polybrominated diphenyl ethers and phthalates in polymers by gas chro

BELST, Determination method of benzidine

STB GOST R 51310-2001 Drinking water. Method for determination of benz(a)pyrene content

European Committee for Standardization (CEN), Determination method of benzidine

EN 1528-3:1996 Fatty food - Determination of pesticides and polychlorinated biphenyls (PCBs) - Part 3: Clean-up methods
EN ISO 7393-1:2000 Water Quality - Determination of Free Chlorine and Total Chlorine - Part 1: Titrimetric Method Using N,N-Diethyl-1,4-Phenylenediamine
EN 16619:2015 Food analysis - Determination of benzo[a]pyrene@ benz[a]anthracene@ chrysene and benzo[b]fluoranthene in foodstuffs by gas chromatography mass spectrometry (GC-MS)

Professional Standard - Petrochemical Industry, Determination method of benzidine

SH/T 0803-2007 Insulating liquids- Contamination by polycblorinated biphenyls (PCBs)- Method of determination by capillary column gas chromatography

AT-ON, Determination method of benzidine

ONORM M 6282-1987 Water analysis; determination ofnitrite; 4-aminobenzene Sulfonamide — N-(l-naphthyl)-1,2-diaminoethane-dihydrochloride spectrometric method

Hebei Provincial Food Standard of the People's Republic of China, Determination method of benzidine

DBS13/ 005-2016 Determination of polybrominated diphenyl ethers in food of animal origin in food safety local standards

GOSTR, Determination method of benzidine

GOST 17218-1971 Active carbons. Method for determination of protective action time by benzene

未注明发布机构, Determination method of benzidine

BS EN ISO 6468:1997(2008)*BS 6068-2.57:1997 Water quality — Determination of certain organochlorine insecticides, polychlorinated biphenyls and chlorobenzenes — Gas chromatographic method after liquid - liquid extraction

Association of German Mechanical Engineers, Determination method of benzidine

VDI 2451 Blatt 3-1996 Measurement of gaseous immissions - Measurement of sulphur dioxide concentration - Tetrachloromercurate Pararosaniline (TCM) Method

Standard Association of Australia （SAA）, Determination method of benzidine

AS 1767.2.7:1999 Insulating liquids - Test methods - Determination of PCB contamination in insulating liquids by capillary column gas chromatography - Identification of congeners

IN-BIS, Determination method of benzidine

IS 4511 Pt.4-1986

Indonesia Standards, Determination method of benzidine

SNI 06-4824-1998 Test methods for free chlorine content in water by visible light spectrophotometers in diethyl phenylendiamine (DPD)

European Committee for Electrotechnical Standardization（CENELEC）, Determination method of benzidine

EN 62321-6:2015 Determination of certain substances in electrotechnical products - Part 6: Polybrominated biphenyls and polybrominated diphenyl ethers in polymers by gas chromatography-mass spectrometry (GC-MS)
EN IEC 62321-12:2023 Determination of certain substances in electrotechnical products - Part 12: Simultaneous determination - Polybrominated biphenyls, polybrominated diphenyl ethers and phthalates in polymers by gas chromatography-mass spectrometry

ZA-SANS, Determination method of benzidine

SANS 7393-1:2005 Water quality - Determination of free chlorine and total chlorine Part 1: Titrimetric method using N,N-diethyl-1,4-phenylenediamine

化学工业部, Determination method of benzidine

HG 2022-1991 Determination of free chlorine and total chlorine in industrial circulating cooling water N,N--diethyl--1,4--phenylenediamine titration method