How to quantify by gas chromatography

How to quantify by gas chromatography, Total:200 items.

The international standard classification for "How to quantify by gas chromatography" includes: Biology. Botany. Zoology , Gases for industrial application , Chemical analysis , Gaseous fuels , Ambient atmospheres , Organic nitrogen compounds , Other standards related to analytical chemistry , Fertilizers , Petroleum products in general , Protection against crime , Analytical chemistry , Paints and varnishes , Rubber and plastics products in general , Sugar and sugar products , Animal and vegetable fats and oils , Products of the chemical industry , Organic chemicals , Products of the chemical industry in general , Farming and forestry , Fungicides , Fuels , Tobacco, tobacco products and related equipment .

The Chinese standard classification for "How to quantify by gas chromatography" includes: Industrial gas and chemical gas , Heat supply, air supply, air conditioning and refrigerating engineering in general , Analysis methods for toxic substances in atmosphere , Organic chemicals in general , Basic standards and general methods on chemical fertilizers , Petroleum products in general , Crime judging technology , Basic standards and general methods , Basic standard and general method for coating , Rubber products in general , Sugar refining , Grease and oil processing and products , Meat processing and products , Tooth paste, soap and detergent , Insulating oil , Coal tar processed products , Pesticide management and application method , Pesticide , Chemical Measurement , Fuel oil , Tobacco , Legal medical expert .

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

GB/T 41953-2022 Paints and varnishes—Determination of water content of coating materials—Gas-chromatographic method
GB/T 39875-2021 Examination methods for chlordiazepoxide in suspected drugs—Gas chromatography and gas chromatography-mass spectrometry
GB/T 14677-1993 Air quality. Determination of toluene, dimethyl benzene and styrene. Gas chromatography
GB/T 23961-2023 Determination of low carbon aliphatic amines—Gas chromatographic method
GB/T 44966-2024 Determination of the content of fatty acid ethyl esters in olive oil—Gas chromatography-mass spectrometry
GB/T 12209.2-1990 Determination of naphthalene of gas in urban area--Gas chromatographic method
GB/T 8981-2008 Determination of trace hydrogen in gases - Gas chromatographic method
GB/T 39874-2021 Examination methods for bromazepam in suspected drugs—Gas chromatography and gas chromatography-mass spectrometry
GB/T 14676-1993 Air quality －Determination of trimethylamine －Gas chromatography
GB/T 32952-2016 Fertilizers - Determination of polycyclic aromatic hydrocarbons - Gas chromatography - mass spectrometry
GB/T 39880-2021 Examination methods for methadone in suspected drugs -- Gas chromatography and gas chromatography-mass spectrometry
GB/T 43448-2023 Determination of 17-pentatriacontene in honey—Gas chromatography mass spectrometry method
GB/T 2366-2008 Determination of water content in industrial chemicals - Gas chromatographic method
GB/T 39885-2021 Examination methods for triazolam in suspected drugs - Gas chromatography and gas chromatography-mass spectrometry
GB/T 39881-2021 Examination methods for methaqualone in suspected drugs -- Gas chromatography and gas chromatography-mass spectrometry
GB/T 17474-1998 Standard test method for benzene in hydrocarbon solvents by gas chromatography
GB/T 23992-2009 Determination of chlorhydrocarbon content in coatings—Gas chromatographic method
GB/T 39876-2021 Examination methods for cocaine in suspected drugs—Gas chromatography and gas chromatography-mass spectrometry
GB/T 35492-2017 Determination of organotin content of latex products―GC-MS method
GB/T 46325-2025 Determination of Free Sulfur Content in Vulcanized Rubber - Gas Chromatography (GC) and High Performance Liquid Chromatography (HPLC)
GB/T 23961-2009 Determination of low carbon aliaphatic amines—Gas chromatographic method
GB/T 14670-1993 Air quality－Determination of styrene－Gas chromatography
GB/T 40500-2021 Determination of total aromatics composition in aviation fuels—Gas chromatography
GB/T 39883-2021 Examination methods for morphine in suspected drugs - Gas chromatography and gas chromatography-mass spectrometry
GB/T 8981-1988 Determination of trace hydrogen in gases--Gas chromatographic method
GB/T 14605-1993 Determination of trace argon, nitrogen and krypton in oxygen－Gas chromatographic method
GB/T 38095-2019 Determination of docosahexaenoic acid and eicosapentaenoic acid content-Gas chromatography

Professional Standard - Customs

HS/T 23-2009 Determination of naphthalene content.gas chromatography

Professional Standard - Commodity Inspection

SN/T 1111-2002 Determination of glycerine content - Capillary gas chromatography
SN/T 5878-2025 Determination of Benomyl Residues in Animal-derived Food for Export by Gas Chromatography and Gas Chromatography-Mass Spectrometry/Mass Spectrometry
SN/T 5028-2017 Determination of methylal content in gasoline - GC-MS
SN/T 2234-2008 Determination of profenofos residue in food for import and export—GC and GC-MS method
SN/T 5112-2019 Determination of propylene glycol in edibe animals and feeds for import and export - GC Method and GC-MS method
SN/T 5681-2023 Determination of industrial monocarboxylic fatty acids - Gas chromatographic method
SN/T 0591-2016 Determination of dioxathion residues in cerals and oil seeds for export-GC and GC-MS method
SN/T 0590-2013 Determination of 2,4-D butyl ester residues in meat and meat products for export―GC and GC-MS method
SN/T 5095-2018 Determination of fipronil and its metabolite residues in eggs and egg products for export by gas chromatography-mass spectrometry and gas chromatography-mass spectrometry/mass spectrometry
SN/T 2492-2010 Determination of molecular weight of liquefied petroleum gas—Gas chromatography
SN/T 4568-2016 Determination of perfluoralkyl iodides content- Gas chromatography mass spectrometry
SN/T 0654-2019 Determination of captan residues in fruits for Export GC and GC-MS/MS method
SN/T 5348-2021 Determination of contents in industrial nonyl alcohol - Gas chromatography

Group Standards of the People's Republic of China

T/JAASS 101-2023 Determination of polychlorinated biphenyls residues in grains— gas chromatography-mass spectrometry
T/CCASC 3003-2023 Determination of acetylene content in calcium carbide slag-Gas chromatography
T/NAIA 014-2020 Determination of Moisture Content in Methanol by Gas Chromatography
T/SDAQI 031-2021 Determination of methanol content in liquefied petroleum gas by gas chromatography
T/GDFCA 103-2023 Determination of volatile flavoured compounds in Amomi fructus Gas chromatography-mass spectrometry
T/CQAAS 008-2023 Determination of aroma component content of Zanthoxylum bungeanum - gas chromatography mass spectrometry
T/AHFIA 068-2022 Determination of Formaldehyde in baijiu Gas Chromatography
T/CSTM 00638-2022 Determination of aromatic hydrocarbon content in coatings— Gas chromatography-mass spectrometry method
T/SSAE 27-2023 Determination of organo-tin compound in automobiles materials- gas chromatography mass spectrometry method
T/TGIC 006-2024 Hydrogen water-Determination of hydrogen content - Gas chromatography
T/BSM 0001-2023 Determination of hydrogen content in hydrogen water Headspace gas chromatographic method

Professional Standard - Energy and Power Planning

DL/T 703-2015 Determination of Dissolved Gas Content in Insulating Oil by Gas Chromatograhy
DL/T 703-1999 Determination of dissolved gas content in insulating oil by gas chromatography

Professional Standard - Ferrous Metallurgy

YB/T 031-2012 Determination of the naphthalene content of coal tar pitch for road by gas chromatography
YB/T 5078-2010 Testing of coal tar - Determination of the naphthalene content - Gas chromatography
YB/T 4929-2021 Coke oven gas-Determination of the naphthalene content- Gas chromatography
YB/T 6051-2022 Coke oven gas--Determination of benzene content-Gas chromatography
YB/T 4496-2015 Coke oven gas. Determination of the hydrogen sulfide content. Gas chromatography
YB/T 5078-2001 Method of determination by gas chromatography for naphthalene content in coal tar
YB/T 4990-2022 Coking light oil--Determination of the phenol content--Gas chromatography

Guangxi Provincial Standard of the People's Republic of China

DB45/T 1245-2015 Determination of Methylal Content in Gasoline by Gas Chromatography-Mass Spectrometry

Professional Standard - Supply and Marketing Cooperative

GH/T 1486-2025 Determination of Pinostanol Content in Edible Mushrooms by Gas Chromatography
GH/T 1106-2015 Determination of glycerol in honey――GC-MS method

Professional Standard - Agriculture

205药典三部-2020 Chromatography 0521 Gas Chromatography
NY/T 3111-2017 Determination of sterols in vegetable oils- Gas chromatography mass spectrometry
NY/T 3173-2017 Determination of 9，10-anthraquinone in tea-Gas chromatography-tandem mass spectrometry
NY/T 3170-2017 Determination of 1,2,3,5,6-Pentathiepane in Lentinula edodes by GC-MS
85药典四部-2015 0521 Gas chromatography
66药典四部-2020 0521 Gas chromatography
NY/T 1456-2007 Determination of prochloraz residue in fruits by gas chromatography
NY/T 3277-2018 Determination of 88 pesticides and their metabolites residues in water— Liquid chromatography-tandem mass spectrometry and gas chromatography-tandem mass spectrometry

National Metrological Verification Regulations of the People's Republic of China

JJG 700-2016 Verification Regulation of Gas Chromatograph
JJG(化工) 201-1991 Gas Chromatograph Verification Regulations
JJG 700-1999 Verification Regulation of Gas Chromatograph

Jilin Provincial Standard of the People's Republic of China

DB22/T 1612-2012 Determination of propanil residues in ginseng by gas chromatography
DB22/T 2466-2016 Determination of Propiconazole Residues in Soil by Gas Chromatography-Mass Spectrometry
DB22/T 2852-2017 Determination of Toxaphene Residues in Ginseng Gas Chromatography-Mass Spectrometry/Mass Spectrometry

Hebei Provincial Standard of the People's Republic of China

DB13/T 5295-2020 Determination of Trace Components in High Purity Deuterium Gas Chromatography

National Health Commission of the People's Republic of China

GB 23200.68-2016 National food safety standard－Determination of boscalid residue in foods Gas chromatography-mass spectrometry
GB 23200.47-2016 National food safety standard―Determination of clofentezine residue in foods Gas chromatography-mass spectrometry
GB 23200.61-2016 National food safety standard―Determination of propham residue in foods Gas chromatography―mass spectrometry
GB 23200.53-2016 National food safety standard―Determination of flusilazole residue in foods Gas chromatography-mass spectrometry
GB 23200.66-2016 National food safety standards－Determination of tebufenpyrad residue in foods Gas chromatography-mass spectrometry
GB 23200.62-2016 National food safety standard―Determination of flumiclorac-pentyl residue in foods Gas chromatography-mass spectrometry
GB 23200.30-2016 National food safety standard―Determination of cyflufenamid residue in foods Gas chromatography-mass spectrometry
GB 23200.32-2016 National food safety standard―Determination of daminozide residue in foods Gas chromatography-mass spectrometry
GB 23200.59-2016 National food safety standard―Determination of dichlobenil residue in foods Gas chromatography-mass spectrometry
GB 23200.48-2016 National food safety standard―Determination of difenzoquat residue in foods Gas chromatography-mass spectrometry
GB 23200.52-2016 National food safety standard―Determination of cyprodinil residue in foods Gas chromatography-mass spectrometry

Shandong Provincial Standard of the People's Republic of China

DB37/T 643-2006 Gas Chromatography for the Determination of Dimethophos Residues in Soil
DB37/T 1778-2011 Determination of Estrogen Residues in Aquatic Products by Gas Chromatography-Mass Spectrometry
DB37/T 1955-2011 Determination of Pyridaben Residues in Vegetables by Gas Chromatography-Mass Spectrometry
DB37/T 3993-2020 Determination of benzene residues in edible oil—Headspace-GC/MS method
DB37/T 3312-2018 Determination of Cantharidin in Cosmetics by Gas Chromatography

Professional Standard - Non-ferrous Metal

YS/T 1392-2020 Determination of thecontent of chlorosilane components - Gas chromatographic method
YS/T 987-2021 Determination of carbon content in chlorosilanes by gas chromatography mass spectrometry

Agricultural Standard of the People's Republic of China

农业部781号公告-8-2006 The determination of Amitraz residues in honey GC/MS method
农业部958号公告-10-2007 Determination of estradiol residues in fishery products Gas chromatography-mass spectrometry method

Professional Standard - Petrochemical Industry

SH/T 0693-2000 Standard test method for determination of benzene,toluene,ethylbenzene,p/m-xylene,o-xylene,C9 and heavier aromatics,and total aromatics in finished gasoline by gas chromatography

Professional Standard - Nuclear Industry

EJ/T 20143-2016 Determination of equivalent water content in the fuel rod-gas chromatography

Professional Standard - Public Safety Standards

GA/T 2026-2023 Forensic sciences-Examination methods for phencyclidine in suspected drugs-GC and GC-MS
GA/T 1327-2016 GC, GC-MS and LC-MS/MS examination methods for zolpidem in biological samples in forensic science

Military Standard of the People's Republic of China-General Armament Department

GJB 3665A-2021 Determination of sarin by gas chromatography
GJB 3667-1999 Soman determination gas chromatography
GJB 3665-1999 Determination of sarin by gas chromatography
GJB 3667A-2021 Soman determination gas chromatography
GJB 4779-1997*GJBz 20413.1-1997 Determination of Sies by gas chromatography

Professional Standard - Tobacco

YC/T 405.3-2011 Tobacco and tobacco products—Determination of multi-pesticide residues—Part 3:Gas chromatography-mass spectrometry method and gas chromatographic methods

Professional Standard - Textile

FZ/T 01178-2024 Textiles — Determination of the content of insect repellents — Gas chromatography-mass spectrometry method

Sichuan Provincial Standard of the People's Republic of China

DB51/T 1921-2014 Determination of Toluene Content in Nail Polish by Gas Chromatography

Chongqing Provincial Standard of the People's Republic of China

DB50/T 679-2016 Determination of VOCS in exhaust gas from stationary pollution sources by gas chromatography-mass spectrometry

Professional Standard - Judicatory

SF/T 0113-2021 Determination of cyanide in blood by gas chromatography-mass spectrometry and gas chromatography

Henan Provincial Standard of the People's Republic of China

DB41/T 1425-2017 Determination of Methylal Content in Gasoline by Gas Chromatography

British Standards Institution (BSI)

BS PD ISO/TS 19046-1:2017 Cheese. Determination of propionic acid level by chromatography-Method by gas chromatography
BS ISO 23168:2019 Paints and varnishes — Determination ofwater content — Gas - chromatographic method
BS DD ISO/TS 23647:2010 Vegetable fats and oils. Determination of wax content by gas chromatography
12/30231382 DC BS ISO 13859. Soil quality. Determination of polycyclic aromatic hydrocarbons (PAH) by gas chromatography (GC) and high performance liquid chromatography (HPLC)
DD ISO/TS 23647:2010 Vegetable fats and oils. Determination of wax content by gas chromatography
BS ISO 22892:2006 Soil quality. Guidelines for the identification of target compounds by gas chromatography and mass spectrometry
DD CEN ISO/TS 17764-2:2006 Animal feeding stuffs. Determination of the content of fatty acids. Gas chromatographic method

Yugoslav Association for Standardization

JUS H.F8.231-1986 Gases. Determination of hydrocarbons content Gas chromatographic metbod
JUS H.F8.122-1986 Gases. Determination of oxygen content. Gas chromatographic method
JUS H.F8.132-1986 Gases. Determination of nitrogen content. Gas chromatographic method
JUS H.F8.152-1986 Gases. Determination ofcarbon dioxid content. Gas chromatographic methctC/
JUS H.F8.300-1989 Natural gas DETERMINATION OF WATER AND METHANOL CONTENT Gas chromatography method
JUS H.G8.204-1985 Reagents. Methanol. Determination of methanol content. Gaschromatographic method
JUS H.G8.348-1989 Reagents. Acetone. Determinati on of methanol content. Gas chromatogranhic method
JUS H.G8.347-1989 Reagents. Acetone. Determination of acetone content. Gas chromatoyraohic method

GCC Standardization Organization

GSO ISO 19739:2014 Natural gas -- Determination of sulfur compounds using gas chromatography
GSO ISO 13859:2015 Soil quality -- Determination of polycyclic aromatic hydrocarbons (PAH) by gas chromatography (GC) and high performance liquid chromatography (HPLC)
GSO ISO/TS 23647:2015 Vegetable fats and oils -- Determination of wax content by gas chromatography
GSO ISO 12078:2014 Anhydrous milk fat -- Determination of sterol composition by gas liquid chromatography (Reference method)
GSO ISO 8186:2014 Ambient air -- Determination of the mass concentration of carbon monoxide -- Gas chromatographic method

Universal Oil Products Company (UOP)

UOP 759-1976 TRACE OXYGEN IN GASES BY GAS CHROMATOGRAPHY
UOP 735-1973 Hydrogen Content of Gases by Gas Chromatography

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

TCVN 3757-1983 Natural gases.Determination of hydrocarbon content by gas chromatography
TCVN 3895-1984 Natural gases.Gas chromatography method for the determination of carbon dioxided and hydrogen contents

European Committee for Standardization (CEN)

EN ISO 23168:2020 Paints and varnishes - Determination of water content - Gas-chromatographic method (ISO 23168:2019)

Czech Standards Institute (UNMZ)

CSN 66 1251-1985 Determination of n-butanol content by gas chromatography
CSN 65 6145-1967 Determination of the hydrocarbon ontent by gas chromatography
CSN 66 1240-1983 Determination of ethanol by gas chroma- tography

The Directorate General of Specifications and Metrology (DGSM)

OS GSO ISO 13859:2015 Soil quality -- Determination of polycyclic aromatic hydrocarbons (PAH) by gas chromatography (GC) and high performance liquid chromatography (HPLC)
OS GSO ISO/TS 23647:2015 Vegetable fats and oils -- Determination of wax content by gas chromatography
OS GSO ISO 16703:2014 Soil quality -- Determination of content of hydrocarbon in the range C10 to C40 by gas chromatography

Association Francaise de Normalisation

NF X43-025:1988 Air quality. Ambient air. Determination of polycyclic aromatic hydrocarbons. High pressure liquid chromatography and gaz chromatography determination.
XP ISO/TS 19046-1:2017 Cheeses - Determination of propionic acid content by chromatography - Part 1: gas chromatography method
NF T30-317*NF EN ISO 23168:2020 Paints and varnishes - Determination of water content - Gas-chromatographic method
NF EN ISO 23168:2020 Paints and varnishes - Determination of water content - Gas chromatography method
XP V04-441-1*XP ISO/TS 19046-1:2017 Cheese - Determination of propionic acid level by chromatography - Part 1 : method by gas chromatography
XP T60-751*XP ISO/TS 23647:2010 Vegetable fats and oils - Determination of wax content by gas chromatography
XP ISO/TS 23647:2010 Fats of plant origin - Determination of wax content by gas chromatography
NF M07-044:1986 Determination of benzene content in light hydrocarbon solvents - Gas chromatography method
NF EN ISO 16703:2011 Soil quality - Determination of hydrocarbons from C10 to C40 by gas chromatography
NF T31-250*NF EN ISO 23157:2022 Determination of the silanol group content on the surface of fumed silica - Reaction gas chromatographic method

International Organization for Standardization (ISO)

ISO/TS 19046-1:2017 | IDF/RM 233-1:2017 Cheese — Determination of propionic acid level by chromatography — Part 1: Method by gas chromatography
ISO 23168:2019 Paints and varnishes — Determination of water content — Gas-chromatographic method
ISO 6977:1983 Natural gas; Determination of water and methanol contents; Gas chromatographic method
ISO 19739:2004 Natural gas - Determination of sulfur compounds using gas chromatography

Polski Komitet Normalizacyjny (PKN)

PKN-ISO/TS 19046-1-2021-07 P Cheese -- Determination of propionic acid level by chromatography -- Part 1: Method by gas chromatography
PN-EN ISO 23168-2021-06 E Paints and varnishes--Determination of water content--Gas-chromatographic method (ISO 23168:2019)

American Society for Testing and Materials (ASTM)

ASTM UOP735-73 Hydrogen Content of Gases by Gas Chromatography
ASTM RR-D02-1298 1992 D5303-Test for Trace Carbonyl Sulfide in Propylene by Gas Chromatography

Danish Standards Foundation

DANSK DS/ISO 23168:2019 Paints and varnishes – Determination of water content – Gas-chromatographic method
DANSK DS/ISO 13859:2014 Soil quality - Determination of polycyclic aromatic hydrocarbons (PAH) by gas chromatography (GC) and high performance liquid chromatography (HPLC)
DS/EN ISO 23168:2020 Paints and varnishes – Determination of water content – Gas-chromatographic method (ISO 23168:2019)
DANSK DS/ISO 23646:2022 Soil quality – Determination of organochlorine pesticides by gas chromatography with mass selective detection (GC-MS) and gas chromatography with electron-capture detection (GC-ECD)

Ente Nazionale Italiano di Unificazione

UNI EN ISO 23168:2021 Paints and varnishes - Determination of water content - Gas-chromatographic method

Kingdom of Bahrain Testing and Metrology Directorate

BH GSO ISO/TS 23647:2017 Vegetable fats and oils -- Determination of wax content by gas chromatography

GM North America

GM GM9313P-1988 Residual Pentane Content by Gas Chromatography

Society of Automotive Engineers (SAE)

SAE J1151_198810 Methane Measurement Using Gas Chromatography
SAE J1151_198806 Methane Measurement Using Gas Chromatography
SAE J1151_198306 Methane Measurement Using Gas Chromatography
SAE J1151_197608 Methane Measurement Using Gas Chromatography
SAE J1151_199112 Methane Measurement Using Gas Chromatography
SAE J1151_201109 Methane Measurement Using Gas Chromatography
SAE J1151A_197907 Methane Measurement Using Gas Chromatography
SAE J1151-1988 METHANE MEASUREMENT USING GAS CHROMATOGRAPHY
SAE J1151A-1979 METHANE MEASUREMENT USING GAS CHROMATOGRAPHY
SAE J1151-1976 Methane Measurement Using Gas Chromatography
SAE J1151-1983 Methane Measurement Using Gas Chromatography

German Institute for Standardization

DIN EN ISO 23168 E:2020-08 Determination of water content in paints and varnishes by gas chromatography (draft)
DIN EN ISO 23168:2021-02 Paints and varnishes - Determination of water content - Gas-chromatographic method (ISO 23168:2019); German version EN ISO 23168:2020

Gosstandart of Russia

GOST 17567-1981 Gas chromatography. Terms and definitions
GOST ISO 23168-2021 Paints and varnishes. Determination of water content. Gas chromatographic method
GOST 33898-2016 Gasolines. Determination of aromatic hydrocarbons content by gas chromatography method
GOST 32384-2013 Acetic acid. Gas chromatographic determination in atmospheric air
GOST 30622.1-2022 Cigarettes. Determination of water in total particulate matter from the mainstream smoke. Gas-chromatographic method
GOST ISO/TS 23647-2024 Vegetable fats and oils. Determination of wax content by gas chromatography

Korean Agency for Technology and Standards (KATS)

KS M 0027-2008 General rules for analytical methods in gas chromatography mass spectrometry
KS I ISO 18287-2018(2024) Soil quality — Determination of polycyclic aromatic hydrocarbons(PAH) — Gas chromatographic method with mass spectrometric detection(GC-MS)
KS I ISO 19739:2010 Natural gas-Determination of sulfur compounds using gas chromatography

Association of German Mechanical Engineers

VDI 2100 Blatt 5-2020 Ambient air – Determination of volatile organic compounds, especially ozone precursors – Gas chromatography method
VDI 3482 Blatt 3-1979 Gaseous air pollution measurement; gas chromatographic determination of aromatic hydrocarbons - grab sampling
VDI 2457 Blatt 5-2000 Gaseous emission measurement - Chromatographic determination of organic compounds - Sampling in gas vessels, gas chromatographic analysis
VDI 3493 Blatt 1-1982 Gaseous emission measurement; determination of vinyl chloride; gas chromatographic method; grab sampling

Lithuanian Standards Office

LST EN ISO 23168:2021 Paints and varnishes - Determination of water content - Gas-chromatographic method (ISO 23168:2019)

Austrian Standards

OENORM EN ISO 23168:2021 Paints and varnishes - Determination of water content - Gas-chromatographic method (ISO 23168:2019)

Swiss Association for Standardization (SNV)

SN EN ISO 23168:2021 Paints and varnishes - Determination of water content - Gas-chromatographic method (ISO 23168:2019)

Spanish Association for Standardization (UNE)

UNE-EN ISO 23168:2021 Paints and varnishes - Determination of water content - Gas-chromatographic method (ISO 23168:2019)