Determination of Methanol by High Performance Liquid Chromatography

Determination of Methanol by High Performance Liquid Chromatography, Total:389 items.

The international standard classification for "Determination of Methanol by High Performance Liquid Chromatography" includes: Chemical reagents , Photographic chemicals , Animal feeding stuffs , General methods of tests and analysis for food products , Cosmetics. Toiletries , Surface active agents , Farming and forestry , Toys , Textiles in general , Paints and varnishes , food products in general , Sugar and sugar products , Oilseeds , Other standards related to optics and optical measurements , Chemical analysis , Tobacco, tobacco products and related equipment , Biology. Botany. Zoology , Materials and articles in contact with foodstuffs , Protection against crime , Leather and furs , Animal and vegetable fats and oils , Organic acids , Other standards related to farming and forestry , Vegetables and derived products , Farming and forestry in general , Milk and processed milk products , Coals , Wood-based panels .

The Chinese standard classification for "Determination of Methanol by High Performance Liquid Chromatography" includes: Instrument analysis reagent , Photographic-grade chemicals , Livestock and poultry feed and additive , Basic standards and general methods , Cosmetics , Tooth paste, soap and detergent , Toys , Basic standards and general methods , Basic standard and general method for coating , Food processing and products in general , Beekeeping, silkworm keeping , Oil crop and product , chromatograph , Tobacco , Environmental Condition and General Test Method , Food sanitation , Crime judging technology , Furs and leathers , Grease and oil processing and products , Organic chemicals in general , Basic standards and general methods , Cereal crop and forage crop in general , Melon, fruit and vegetable planting and product , Agriculture and forestry technology , Tobacco curing in general , Aromatics, seasoner crop and product , Coal analysis methods , Basic standards and general methods , Diagnostic standard for occupational diseases , Artificial board .

Professional Standard - Chemical Industry

HG/T 2414-2007 Photographic chemicals The method for the determination of the color couples Reversed phase high performance liquid chromatography
HG/T 4581-2013 Chemical Reagent - Methanol for High Performance Liquid Chromatography Eluent
HG/T 2414-1993 Photographic chemicals Coupler--Determination of assay --Reversed phase high performance liquid chromatography

Group Standards of the People's Republic of China

T/CSATC 5-2020 Determination of Silk? by High Performance Liquid Chromatography
T/CRIAC 0025-2020 Chemical reagent— Trichloromethane for high performance liquid chromatography
T/SATA 077-2024 Determination of 20 steroid hormones in serum—High performance liquid chromatography tandem mass spectrometry
T/SDFA 029-2023 Determination of 25-Hydroxycholecalciferol in Mixed Feed Additives by High Performance Liquid Chromatography
T/CRIAC 0018-2020 Chemical reagent— Ethanol for high performance liquid chromatography
T/SSAE 34-2023 Determination of azodicarbonamide in automobiles materials- high performance liquid chromatography method
T/WHAS 065-2024 Determination of ganaxolone - High-performance liquid chromatography
T/SATA 034-2022 Determination of 5-hydroxymethylfurfural in condiments—high performance liquid chromatography
T/SDFA 006-2023 Determination of Formic Acid and Formate in Mixed Feed Additives by High Performance Liquid Chromatography
T/NXFSA 004S-2020 Determination of Lycium barbarum by High Performance Liquid Chromatography
T/SDAS 619-2023 Determination of Anthocyanins in Color Corn by High Performance Liquid Chromatography
T/HCCC 01-2022 Luoding Cinnamomum cassia High performance liquid chromatographic fingerprint method
T/GXAS 755-2024 Marine Organisms—Determination of steroid hormones—High performance liquid chromatography mass spectrometric method
T/NAIA 083-2021 Determination of Hydroxybenzoic Acids in Wine by High Performance Liquid Chromatography
T/CASME 713-2023 Determination of L-Carnosine—High performance liquid chromatography
T/SATA 0001-2017 Determination of Ergosterol in Ganoderma lucidum spore oil by HPLC
T/YNBX 104-2023 Determination of resveratrol in food High performance liquid chromatography
T/NAIA 0201-2023 Determination of Glycerin in Wine by High Performance Liquid Chromatography
T/YNBX 033-2021 Determination of 5-hydroxymethylfurfural in coffee—High performance liquid chromatography
T/HZBX 026-2019 Detemination of ergosterol in fungi and their products--High performance liquid chromatography
T/ZJATA 0011-2022 Soil-Determination of organic acids (formic acid, acetic acid, propionic acid, acrylic acid)-High performance liquid chromatography
T/CRIAC 0024-2020 Chemical reagent— Dichloromethane for high performance liquid chromatography
T/GXAS 753-2024 Seawater—Determination of steroid hormones—High performance liquid chromatography mass spectrometric method
T/CRIAC 0026-2020 Chemical reagent— Toluenefor high performance liquid chromatography
T/FJHX 0004-2023 Determination of neutral triterpenoids and ergosterol in Ganoderma extract by high performance liquid chromatography
T/ZNZ 128-2022 Determination of ergosterol content in edible fungi—high performance liquid chromatography
T/GXAS 754-2024 Marine Sediment—Determination of steroid hormones—High performance liquid chromatography mass spectrometric method
T/GZZJ 05-2019 Determination of 4-isopropyl-m-cresol in cosmetics. High performance liquid chromatography
T/GZZJ 03-2019 Determination of 2,4-dichlorobenzyl alcohol in cosmetics. High performance liquid chromatography
T/CRIAC 0019-2020 Chemical reagent— Isopropyl alcohol for high performance liquid chromatography
T/CFIAS 6005-2022 Determination of menbutone in feeds — High performance liquid chromatography
T/WHAS 066-2024 Determination of gestrinone - High-performance liquid chromatography
T/NAIA 085-2021 Determination of flavanols in wine by high performance liquid chromatography
T/NAIA 082-2021 Determination of Flavonols in Wine by High Performance Liquid Chromatography
T/SDAQI 031-2021 Determination of methanol content in liquefied petroleum gas by gas chromatography

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

GJB 4780-1997*GJBz 20413.2-1997 Determination of Sies by high performance liquid chromatography
GJB 3647A-2021 Determination of thiodiglycol by high performance liquid chromatography
GJB 4782A-2020 Determination of Benzene Chloroacetophenone by High Performance Liquid Chromatography
GJB 3647-1999 Determination of thiodiglycol by high performance liquid chromatography
GJB 4782-1997*GJBz 20414-1997 Determination of Benzene Chloroacetophenone by High Performance Liquid Chromatography
GJB 4780A-2021 Determination of Sies by high performance liquid chromatography

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

GB/T 8381.7-2009(XG1-2019) Determination of Lalaquindox in Feed High Performance Liquid Chromatography "No. 1 Amendment"
GB/T 32121-2015 Determination of 4-(aminomethyl) cyclohexanecarboxylic acidtranexamic acid）in toothpaste―HPLC-MS/MS
GB/T 40744-2021 Determination of solanesol in potato stems,leaves and their processed products—High performance liquid chromatography-mass spectrometry
GB/T 23296.7-2009 Food contact materials - Determination of epichlorohydrin in plastics - High performance liquid chromatography
GB/T 40189-2021 Determination of metronidazole and norfloxacin in toothpaste—High performance liquid chromatography method
GB/T 17528-2009 Determination of piperine content—Method using HPLC
GB/T 16631-2008 General rules for high performance liquid chromatography
GB/T 24800.8-2009 Determination of methotrexate in cosmetics by high performance liquid chromatography method
GB/T 38479-2021 Determination of chitosan content―High performance liquid chromatography
GB/T 26792-2019 High performance liquid chromatography
GB/T 32118-2015 Determinateion of formaldehyde in toothpaste―High performance liquid chromatography
GB/T 26792-2011 High performance liquid chromatography
GB/T 35956-2018 Detection and determination of N-nitrosodiethanolamine (NDELA) in cosmetics—HPLC-MS-MS
SN/T 4890-2017 Determination of curcuminoids in foodstuffs for export—HPLC method and HPLC-MS/MS method
SN/T 4677-2016 Determination of azodicarbonamide in foods for export―HPLC method
GB/T 25221-2010 Inspection of grain and oils—Determination of ergosterol in grain—Normal phase high performance liquid chromatography
GB/T 38169-2019 Determination of caulerpin content—High performance liquid chromatography
SN/T 4768-2017 Determination of 1-methyl-2-pyrrolidone in paint by high performance liquid chromatography-tandem mass spectrometry
GB/T 27577-2011 Determination of vitamin B5(pantothenic acid) and provitamin B5(D-fantothenol) in cosmetics—HPLC/UV and HPLC MS/MS
GB/T 24903-2010 Inspection of grain and oils—Determination of resveratrol in peanut by high performance liquid chromatography
GB/T 40894-2021 Determination of prohibited substances thiamazole in cosmetics—High performance liquid chromatography
GB/T 40641-2021 Determination of polyprenol from pine needles—High performance liquid chromatography
GB/T 8381.7-2005 Determination of olaguindox in feed--High performance liquid chromatography
SN/T 4891-2017 Determination of Spirotetramat residue in foodstuffs for export—HPLC andLC-MS/MS method
GB/T 30937-2014 Determination of banned metronidazole in cosmetics―High performance liquid chromatography-tandem mass spectrometry
GB/T 2912.3-2009 Textiles—Determination of formaldehyde—Part 3:High performance liquid chromatography method
GB/T 30940-2014 Determination of tretinoin and isotretinoin in cosmetics―High performance liquid chromatography
GB/T 29664-2013 Determination of vitamin B3(nicotinic acid and nicotinamide)in cosmetics—HPLC and HPLC-MS/MS
GB/T 34683-2017 Determination of formaldehyde content in waterborne coatings- High performance liquid chromatographic method
GB/T 22222-2008 Determination of xylitol sorbitol maltitol in foods - High-performance liquid chromatography
GB/T 31758-2015 Determination of solanesol in tobacco leaves and the extracts of tobacco leaves―High performance liquid chromatography method
GB/T 22325-2008 Determination of benzoyl peroxide in wheat flour by high performance liquid chromatography
GB/T 19941.1-2019 Leather and fur—Determination of formaldehyde content—Part 1: High performance liquid chromatography method
GB/T 34436-2023 Determination of formamide in toy materials―High performance liquid chromatography-mass spectrometry
GB/T 42423-2023 Determination of dichlorobenzyl alcohol and chlorphensin in cosmetics—High performance liquid chromatography
GB/T 22220-2008 Determination of cholesterol in foods—HIgh-performance liquid chromatography
GB/T 21037-2007 Determination of trimethoprim in feeds—High performance liquid chromatography
GB/T 29636-2013 GC ,HPLC and GC-MS examination methods for methylamphetamine in suspected drug
GB/T 23883-2009 Determination of ricinine in feeds-High performance liquid chromatography
GB/T 22260-2008 Determination of methyltestosterone in feeds—High performance liquid chromatography tandem mass spectrometry
GB/T 40950-2021 Determination of alkyl(C12～C22) trimethyl ammonium salt in cosmetics—High performance liquid chromatography tandem mass spectrometry
GB/T 42114-2022 Determination of flavonol in cassava leaves—High-performance liquid chromatography
GB/T 35948-2018 Determination of seven parabens in cosmetics—High performance liquid chromatography
GB/T 19542-2004 Determination of sulfamethazine and sulfamonomethoxine in feeds―High-performance liquid chromatography
GB/T 34822-2017 Determination of formaldehyde in cosmetics—High-performance liquid chromatography
GB/T 23495-2009 Determination of benzoic acid,sorbic acid and saccharin sodium in foods—High performance liquid chromatography method
GB/T 44350-2024 Determination of methyl syringate in rape honey—High performance liquid chromatography method
SN/T 4842-2017 Determination of azodicarbonamide in plastics and rubber—High performance liquid chromatography
GB/T 24800.3-2009 Determination of spironolacton, benzoyl peroxide and tretinoin in cosmetics by high performance liquid chromatography method
GB/T 24773-2009 Determination of purity for ursolic acid—High performance liquid chromatographic method
GB/T 8381.7-2009 The determination of olaquindox in feed - High performance liquid chromatography

Professional Standard - Agriculture

202药典三部-2020 Chromatography 0512 High Performance Liquid Chromatography
NY/T 934-2005 Determination of diazepam in feeds High-performance liquid chromatography
NY/T 936-2005 Determination of dimatridazole in feeds High - Performance liquid chromatography
NY/T 3140-2017 Determination of phenylethanolamine A in feeds- High performance liquid chromatography
GB/T 45200-2025 Determination of neohesperidin dihydrochalcone in feeds—High performance liquid chromatography
NY/T 1381-2007 Determination of Capsaicin by High Performance Liquid Chromatography
SN/T 5722-2024 Determination of 2-Bromo-2-nitro-1,3-propanediol in paper products by High Performance Liquid Chromatography (HPLC)
HJ 1316-2023 Stationary source emission―Determination of acrylic acid and methacrylic acid―High performance liquid chromatography
NY/T 4354-2023 Determination of phosphatidylcholine in eggs by high performance-liquid chromatography
NY/T 3342-2018 Determination of resveratrol and resveratrol glycoside isomers in peanut—Ultra performance liquid chromatography method
NY/T 2896-2022 Determination of diazepam in muscle of livestock and poultry—High performance liquid chromatography
NY/T 3164-2017 Determination of anthocyanins in black rice-High-performance liquid chromatography
农业部2483号公告-5-2016 Determination of Taurine in Feed by High Performance Liquid Chromatography
NY/T 2641-2014 Determination of resveratrol and polydatin in plant origin products. High performance liquid chromatography
NY/T 2336-2013 Determination of polymethoxylated flavones in citrus and derived products.HPLC
158药典三部-2010 Appendix III Chromatography IIIB High Performance Liquid Chromatography
NY/T 1332-2007 Milk and Dairy Products-Determination of 5-hydroxymethylfurfural by HPLC
NY/T 1723-2009 Determination of dimethyl fumarate in food-High-performance liquid chromatography method
NY/T 3101-2017 Determination of monascus pigments in meat products-HPLC method
NY/T 918-2004 Determination of estradiol in feed -- High-pressure liquid chromatography
GB/T 45208-2025 Determination of paprika red in feeds—High performance liquid chromatography
NY/T 2895-2016 Determination of folic acid in feeds. High performance liquid chromatography
183药典三部-2015 Chromatography 0512 General Principles of High Performance Liquid Chromatography 23
82药典四部-2015 0512 High performance liquid chromatography
63药典四部-2020 0512 High performance liquid chromatography
SZDB/Z 321-2018 Determination of Dimethyl Yellow and Diethyl Yellow in Food by High Performance Liquid Chromatography
NY/T 4310-2023 Determination of chromium picolinate in feeds-High performance liquid chromatography
NY/T 2297-2012 Determination of Benzoic Acid and Sorbic Acid in Feeds - High Performance Liquid Chromatography
NY/T 3292-2018 etermination of formaldehyde in vegetables by high performance-Liquid chromatography
T/CFIAS 003-2019 Determination of Diazepam in Feed by High Performance Liquid Chromatography
JJG(教委) 024-1996 Verification Regulations for High Performance Liquid Chromatography
NY/T 1463-2007 Determination of methaqualone in feeds by high - Performance liquid chromatography

Agricultural Standard of the People's Republic of China

农业部1077号公告-5-2008 Determination of olaquindox metabolite residues in fishery products by high performance liquid chromatography
农业部1862号公告-2-2012 Determination of zolpidem in feeds.High performance liquid chromatography/Liquid chromatography-tandem mass spectrometry
农业部2224号公告-2-2015 Determination of ethinylestradiol in feeds.High performance liquid chromatography
农业部1486号公告-1-2010 Determination of phenylethanolamine A in feeds. High performance liquid chromatography-tandem mass spectrometry

Tianjin Provincial Standard of the People's Republic of China

DB12/T 883-2019 Determination of Formaldehyde in Edible Fungi by High Performance Liquid Chromatography

Sichuan Provincial Standard of the People's Republic of China

DB51/T 1691-2013 Determination of formaldehyde content in daily chemical products by pre-column derivatization high performance liquid chromatography
DB51/T 1175-2010 Determination of phenylethanolamine A in feed by high performance liquid chromatography
DB51/T 1918-2014 Determination of formaldehyde content in cosmetics by pre-column derivatization high performance liquid chromatography

Fujian Provincial Standard of the People's Republic of China

DB35/T 1514-2015 Determination of Resveratrol in Agricultural Products by High Performance Liquid Chromatography

Hunan Provincial Standard of the People's Republic of China

DB43/T 1201-2016 Determination of Methoquine in Feed by High Performance Liquid Chromatography

Professional Standard - Tobacco

YC/T 244-2008 Tobacco and tobacco products - Determination of 1 2 - Propylene glycol glycerol and sorbitol - High performance liquid chromatographic method
YC/T 359-2010 Determination of formaldehyde in tobacco additives—High performance liquid chromatographic method
YC/T 332-2010 Determination of formaldehyde in water-borne adhesives for cigarette—High performance liquid chromatographic method
YC/T 501-2014 Tobacco and tobacco products—Determination of free sterol—High performance liquid chromatography-tandem mass spectrometry method

Anhui Provincial Standard of the People's Republic of China

DB34/T 2242-2014 Determination of deoxynivalenol in livestock and poultry feed - high performance liquid chromatography
DB34/T 1364-2011 Determination of Methyltestosterone in feed-High performance liquid chromatography
DB34/T 1333-2011 Determination of Benzene, Toluene and Xylene by Liquid Chromatography
DB34/T 1031-2009 Determination of Chlorpromazine in Feed - High Performance Liquid Chromatography
DB34/T 1541-2011 Determination of Azodicarbonamide in wheat flour High performance liquid chromatography method
DB34/T 4300-2022 Determination of N,N-Dimethylformamide in Water Quality by High Performance Liquid Chromatography
DB34/T 3477-2019 Determination of Chlorogenic Acid in Feed by High Performance Liquid Chromatography
DB34/T 1363-2022 Determination of Quinocetone in Feed by High Performance Liquid Chromatography
DB34/T 2407-2015 Determination of Chlorantraniliprole Residues in Rice by High Performance Liquid Chromatography

Shandong Provincial Standard of the People's Republic of China

DB37/T 3420-2018 Determination of Estradiol in Mixed Feed Additives by High Performance Liquid Chromatography
DB37/T 3755-2019 Determination of 2,4-D in Fertilizer by High Performance Liquid Chromatography
DB37/T 3610-2019 Determination of Acetyl Mequin and Salicylic Acid in Enrofloxacin Injection - High Performance Liquid Chromatography
DB37/T 3761-2019 Determination of 2-bromo-2-nitropropane-1,3-diol in cosmetics by high performance liquid chromatography
DB37/T 3033-2017 Determination of dimethyl fumarate in cosmetics by high performance liquid chromatography
DB37/T 3039-2017 Determination of Bronopol in Cosmetics by High Performance Liquid Chromatography
DB37/T 4051-2020 Determination of olaquindox and acetylmethaquine added in traditional Chinese veterinary medicine powder by ultra-high performance liquid chromatography-tandem mass spectrometry

Jilin Provincial Standard of the People's Republic of China

DB22/T 2207-2014 Determination of metalaxyl, hexaconazole and trifloxystrobin residues in ginseng by high performance liquid chromatography-mass spectrometry/mass spectrometry
DB22/T 2851-2017 Determination of 1-Methylhydantoin in Rana Oil from Changbai Mountains by High Performance Liquid Chromatography

Zhejiang Provincial Standard of the People's Republic of China

DB33/T 555-2005 Determination of formaldehyde residues in food of plant origin by high performance liquid chromatography
DB33/T 745-2009 Determination of Methyltestosterone in Feed by High Performance Liquid Chromatography

Professional Standard - Supply and Marketing Cooperative

GH/T 1293-2020 Determination of Roselle red pigment content―High-performance liquid chromatography
GH/T 1475-2024 Determination of free ergosterol in edible fungi by HPLC

Professional Standard - Commodity Inspection

SN/T 5146-2019 Determination of L-carnitine in exported foods by high-performance liquid chromatography and liquid chromatography-mass spectrometry/mass spectrometry
SN/T 2087-2008 Determination of chlorine in coal—High performance liquid chromatography
SN/T 5152-2019 Determination of formaldehyde in household paper-HPLC method
SN/T 1974-2007 Determination of methylene bule residues in aquatic product for import and export LC-MS/MS and HPLC method
SN/T 2086-2008 Determination of formaldehyde in wooden toysPVC toys - High Performance liquid chromatography method
SN/T 4390-2015 Determination of formaldehyde in resin crafts―High performance liquid chromatography
SN/T 3105-2012 Determination of phthalic acid esters in waterborne coatings for import and export-High performance liquid chromatography
SN/T 5424-2022 Textiles for import and export - Determination of azodicarbonamide - High performance liquid chromatography method
SN/T 2544-2010 Determination of content in glycerine—High performance liquid chromatography
SN/T 3148-2012 Determination of benzoyl peroxide in food for export-HPLC

Yunnan Provincial Food Standard of the People's Republic of China

DBS53/ 015-2013 Determination of Dimethyl Fumarate in Food by High Performance Liquid Chromatography
DBS53/ 014-2013 Determination of Parabens in Food by High Performance Liquid Chromatography

Guangdong Provincial Standard of the People's Republic of China

DB44/T 1991-2017 Determination of Ergosterol in Ganoderma lucidum and its related products by HPLC
DB44/T 1031-2012 Determination of Methanol Content in Pulping Waste Liquid by Headspace Gas Chromatography

Guangxi Provincial Standard of the People's Republic of China

DB45/T 1492-2017 Determination of Squalene in Flue-cured Tobacco by High Performance Liquid Chromatography
DB45/T 868-2012 Identification of Pangolin Armor Tablets by High Performance Liquid Chromatography Fingerprint

Professional Standard - Hygiene

WS/T 98-1996 Urine - Determination of creatinine - Reversed - Phase high performance liquid chromatographic method
WS/T 53-1996 Urine - Determination of hippuric acid and methylhipuric acid - High performance liquid chromatographic method
WS/T 54-1996 Urine - Determination of phenylglyoxylic acid and mandelic adid - High performance liquid chromatographic method

Professional Standard - Light Industry

QB/T 4127-2010 Determination of piroctone olamine in cosmetics by high performance liquid chromatography
QB/T 5715-2022 Determination of itaconic acid in fermentation liquor-High performance liquid chromatography method
QB/T 5594-2021 Determination of tranexamic acid in cosmetics——High performance liquid chromatography

Professional Standard - Forestry

LY/T 2883-2017 Determination of formaldehyde content of wood-based panels and finishing products—High performance liquid chromatography method

Hubei Provincial Standard of the People's Republic of China

DB42/T 1631-2021 Determination of amidoalcohol drug residues in poultry eggs by high performance liquid chromatography-tandem mass spectrometry

Professional Standard - Environmental Protection

HJ 587-2010 Water quality Determination of Atrazine High performance liquid
HJ 1073-2019 Water quality—Determination of naphthol —High performance liquid chromatography
HJ 1017-2019 Water quality—Determination of benzidine—High performance liquid chromatography
HJ 1071-2019 Water quality—Determination of glyphosate —High performance liquid chromatography
HJ 827-2017 Water quality - Determination of carbamates pesticides by Ultra performance liquid chromatography-triple quadrupole mass spectrometry

Chongqing Provincial Standard of the People's Republic of China

DB50/T 835-2017 Determination of Methanol in Water by Headspace Gas Chromatography

Hebei Provincial Standard of the People's Republic of China

DB13/T 2954-2019 Determination of deoxynivalenol in livestock and poultry feed by high performance liquid chromatography

Liaoning Provincial Standard of the People's Republic of China

DB21/T 3110-2019 Determination of Acrylamide in Water by High Performance Liquid Chromatography-Mass Spectrometry
DB21/T 3287-2020 Water Quality Determination of Acrolein by High Performance Liquid Chromatography

Shanghai Provincial Standard of the People's Republic of China

DB31/T 822-2014 Determination of gossypol in feeds—HPLC method

Heilongjiang Provincial Standard of the People's Republic of China

DB23/T 1877-2017 Determination of Methanol Purge Gas Components by Gas Chromatography

Shaanxi Provincial Standard of the People's Republic of China

DB61/T 563-2013 Water Quality Determination of Acrylamide by High Performance Liquid Chromatography-Mass Spectrometry/Mass Spectrometry

Gosstandart of Russia

GOST 34456-2018 Мilk and dairy products. Determination of sterols by high-performance liquid chromatography
GOST EN 15905-2015 Fertilizers. Determination of the 3-methylpyrazole by high-performance liquid chromatography method
GOST 33460-2015 Juice products. Determination of xylite, sorbite and mannitol by high performance liquid chromatography
GOST 31644-2012 Juice products. Determination of 5-Hydroxymethylfurfural (HMF) by High Performance Liquid Chromatography (HPLC) method
GOST 25742.4-1983 Methanol poison, technical. Gas chromatographic method of ethyl alcohol determination
GOST 33978-2016 Food products and mixed feeds. Method for determination of thyreostats by high perfomance liquid chromatografy-mass spectrometry
GOST R 59632-2021 Wine production. Determination of 1,2-propylene glycol by method of high effective gas chromatography
GOST ISO 17226-1-2011 Leather. Determination of formaldehyde content. Part 1. Method using liquid chromatography
GOST R 53694-2009 Juice Products. Determination of 5-Hydroxymethylfurfural (HMF) by High Performance Liquid Chromatography (HPLC)
GOST 34151-2017 Foodstuffs. Determination of vitamin C by high performance liquid chromatography
GOST EN 15652-2015 Foodstuffs. Determination of niacin by high performance liquid chromatography
GOST R EN 12857-2010 Foodstuffs. Determination of cyclamate. High performance liquid chromatographic method
GOST EN 12857-2015 Foodstuffs. Determination of cyclamate. High performance liquid chromatographic method
GOST EN 15360-2015 Fertilizers. Determination of dicyandiamide by high-performance liquid chromatography method
GOST 33809-2016 Meat and meat products. Determination of sorbic and benzoic acids using high performance liquid chromatography
GOST 31669-2012 Juice products. Determination of sucrose, glucose, fructose and sorbite by high performance liquid chromatography (HPLC)
GOST 34857-2022 Baby teats. Determination of aghidol-2, cymate by high performance liquid chromatography
GOST 34228-2017 Juice products. Determination of preservatives by high performance liquid chromatography

Association Francaise de Normalisation

NF EN 15905:2010 Engrais - Dosage du 3-méthylpyrazole (MP) par chromatographie liquide à haute performance (HPLC)
NF EN ISO 17226-1:2021 Cuir - Dosage chimique du formaldéhyde - Partie 1 : méthode par chromatographie en phase liquide à haute performance
NF U42-153*NF EN 15905:2010 Fertilizers - Determination of 3-methylpyrazole (MP) using high-performance liquid chromatography (HPLC).
NF EN 12821:2009 Food products - Determination of vitamin D by high-performance liquid chromatography - Determination of cholecalciferol (D3) or ergocalciferol (D2)
NF G52-228-1*NF EN ISO 17226-1:2021 Leather - Chemical determination of formaldehyde content - Part 1 : method using high-performance liquid chromatography
NF EN 15705:2023 Inorganic fertilizers - Determination of methylen-urea oligomers using high-performance liquid chromatography (HPLC)
NF U42-152*NF EN 15705:2023 Inorganic fertilizers - Determination of methylen-urea oligomers using high-performance liquid chromatography (HPLC)
NF G52-228-1:2008 Leather - Chemical determination of formaldehyde content - Part 1 : method using high performance liquid chromatography.
NF EN 15652:2009 Food products - Determination of niacin by High Performance Liquid Chromatography (HPLC)
NF ISO 23942:2023 Determination of the hydroxytyrosol and tyrosol content in extra virgin olive oils - Reverse-phase high-performance liquid chromatography (RP-HPLC) method
NF V03-161*NF EN 15652:2009 Foodstuffs - Determination of niacin by HPLC
NF V03-134:2004 Foodstuffs - Determination of vitamin B2 by HPLC.
NF V03-160*NF EN 15607:2009 Foodstuffs - Determination of d-biotin by HPLC.
NF V03-134*NF EN 14152:2014 Foodstuffs - Determination of vitamin B2 by high performance liquid chromatography
NF EN 12857:2001 Produits alimentaires - Dosage du cyclamate - Méthode par chromatographie liquide haute performance
NF V03-014*NF EN 16155:2012 Foodstuffs - Determination of sucralose - High performance liquid chromatographic method.
NF EN 15607:2009 Food products - Determination of d-biotin by High Performance Liquid Chromatography (HPLC)
NF EN 16155:2012 Produits alimentaires - Détermination du sucralose - Méthode par chromatographie liquide à haute performance

Standards Norway

NS-EN 15905:2010 Fertilizers — Determination of 3-methylpyrazole (MP) using high-performance liquid chromatography (HPLC)
NS-EN 15652:2009 Foodstuffs — Determination of niacin by HPLC
NS-EN 12821:2009 Foodstuffs — Determination of vitamin D by high performance liquid chromatography — Measurement of cholecalciferol (D3) or ergocalciferol (D2)
NS-EN 12821:2000 Foodstuffs — Determination of vitamin D by high performance liquid chromatography — Measurement of cholecalciferol (D3) and ergocalciferol (D2)
NS-EN 14164:2008 Foodstuffs — Determination of vitamin B6 by HPLC
NS-EN 12857:1999 Foodstuffs — Determination of cyclamate — High performance liquid chromatographic method
NS-EN 14148:2003 Foodstuffs — Determination of vitamin K1 by HPLC
NS-EN 14122:2014 Foodstuffs — Determination of vitamin B1 by high performance liquid chromatography
NS-EN 14122:2003 Foodstuffs — Determination of vitamin B1 by HPLC
NS-EN 14152:2003 Foodstuffs — Determination of vitamin B2 by HPLC
NS-EN 15721:2013 Ethanol as a blending component for petrol — Determination of higher alcohols, methanol and other impurities — Gas chromatographic method
NS-EN 14152:2014 Foodstuffs — Determination of vitamin B2 by high performance liquid chromatography
NS-EN 12823-1:2014 Foodstuffs — Determination of vitamin A by high performance liquid chromatography — Part 1: Measurement of all-E-retinol and 13-Z-retinol
NS-EN 16328:2012 Fertilizers — Determination of 3,4-dimethyl-1H-pyrazole phosphate (DMPP) — Method using high-performance liquid chromatography (HPLC)
NS-EN 15360:2007 Fertilizers — Determination of dicyandiamide — Method using high-performance liquid chromatography (HPLC)
NS-EN 15721:2009 Ethanol as a blending component for petrol — Determination of higher alcohols, methanol and volatile impurities — Gas chromatographic method

Danish Standards Foundation

DANSK DS/EN 15905:2010 Fertilizers - Determination of 3-methylpyrazole (MP) using high-performance liquid chromatography (HPLC)
DS/EN 15905:2010 Fertilizers - Determination of 3-methylpyrazole (MP) using high-performance liquid chromatography (HPLC)
DANSK DS/EN 15652:2009 Foodstuffs - Determination of niacin by HPLC
DS/EN 15652:2009 Foodstuffs - Determination of niacin by HPLC
DS/ISO 17226-1:2021 Leather – Chemical determination of formaldehyde content – Part 1: Method using high-performance liquid chromatography
DANSK DS/ISO 17226-1:2021 Leather – Chemical determination of formaldehyde content – Part 1: Method using high-performance liquid chromatography
DANSK DS/EN 18003:2024 Food authenticity – Determination of 16-O-Methylcafestol content of green and roasted coffee – HPLC-method
DANSK DS/EN 12821:2009 Foodstuffs - Determination of vitamin D by high performance liquid chromatography - Measurement of cholecalciferol (D3) or ergocalciferol (D2)
DS/EN 12821:2009 Foodstuffs - Determination of vitamin D by high performance liquid chromatography - Measurement of cholecalciferol (D3) or ergocalciferol (D2)
DANSK DS/EN 12857:1999 Foodstuffs - Determination of cyclamate - High performance liquid chromatographic method
DANSK DS/EN 14152:2014 Foodstuffs - Determination of vitamin B2 by high performance liquid chromatography
DS/EN 14152/AC:2006 Foodstuffs - Determination of vitamin B2 by HPLC
DS/EN 15607:2009 Foodstuffs - Determination of d-biotin by HPLC
DS/EN 14122/AC:2006 Foodstuffs - Determination of vitamin B1 by HPLC
DS/EN 14164:2008 Foodstuffs - Determination of vitamin B6 by HPLC
DS/EN 12857:1999 Foodstuffs - Determination of cyclamate - High performance liquid chromatographic method
DANSK DS/EN 14152/AC:2006 Foodstuffs - Determination of vitamin B2 by HPLC
DANSK DS/EN 14122:2014 Foodstuffs - Determination of vitamin B1 by high performance liquid chromatography
DANSK DS/EN 14122/AC:2003 Foodstuffs - Determination of vitamin B1 by HPLC
DS/EN 14122:2003 Foodstuffs - Determination of vitamin B1 by HPLC
DS/EN 14152:2003 Foodstuffs - Determination of vitamin B2 by HPLC
DANSK DS/EN 12823-1:2014 Foodstuffs - Determination of vitamin A by high performance liquid chromatography - Part 1: Measurement of all-E-retinol and 13-Z-retinol
DS/EN ISO 17226-1:2008 Leather - Chemical determination of formaldehyde content - Part 1: Method using high performance liquid chromatography
DANSK DS/EN 15721:2013 Ethanol as a blending component for petrol - Determination of higher alcohols, methanol and other impurities - Gas chromatographic method
DS/EN 15721:2013 Ethanol as a blending component for petrol - Determination of higher alcohols, methanol and other impurities - Gas chromatographic method
DANSK DS/EN 15360:2007 Fertilizers - Determination of dicyandiamide - Method using high-performance liquid chromatography (HPLC)

Spanish Association for Standardization (UNE)

AENOR UNE-EN 15905:2011 Fertilizers - Determination of 3-methylpyrazole (MP) using high-performance liquid chromatography (HPLC)
AENOR UNE 34100:2017 Food products. Determination of 16-O-methylcafestol content in roasted coffee. HPLC method.
UNE-EN 15905:2011 Fertilizers - Determination of 3-methylpyrazole (MP) using high-performance liquid chromatography (HPLC)
UNE-EN 15652:2010 Foodstuffs - Determination of niacin by HPLC
UNE-EN 12821:2009 Foodstuffs - Determination of vitamin D by high performance liquid chromatography - Measurement of cholecalciferol (D3) or ergocalciferol (D2)
UNE-EN 12821:2000 FOODSTUFFS - DETERMINATION OF VITAMIN D BY HIGH PERFORMANCE LIQUID CHROMATOGRAPHY - MEASUREMENT OF CHOLECALCIFEROL (D3) AND ERGOCALCIFEROL (D2).
UNE-EN 14164:2008 Foodstuffs - Determination of vitamin B6 by HPLC
UNE-EN 14152:2015 Foodstuffs - Determination of vitamin B2 by high performance liquid chromatography
UNE-EN 15607:2010 Foodstuffs - Determination of d-biotin by HPLC
UNE-EN 12857:2001 Foodstuffs - Determination of cyclamate - High performance liquid chromatographic method
UNE-ENV 14164:2007 EX Foodstuffs - Determination of vitamin B6 by HPLC
UNE-EN 14122:2014 Foodstuffs - Determination of vitamin B1 by high performance liquid chromatography
UNE-EN 15721:2014 Ethanol as a blending component for petrol - Determination of higher alcohols, methanol and other impurities - Gas chromatographic method
AENOR UNE-EN 15360:2007 Fertilizers - Determination of dicyandiamide - Method using high-performance liquid chromatography (HPLC)
UNE-EN 15360:2007 Fertilizers - Determination of dicyandiamide - Method using high-performance liquid chromatography (HPLC)
UNE-EN 16155:2012 Foodstuffs - Determination of sucralose - High performance liquid chromatographic method

YU-JUS

JUS H.G8.204-1985 Reagents. Methanol. Determination of methanol content. Gaschromatographic method

Swedish Institute for Standards

SS-EN 15905:2010 Fertilizers - Determination of 3-methylpyrazole (MP) using high-performance liquid chromatography (HPLC)
SS-EN 12821:2009 Foodstuffs - Determination of vitamin D by high performance liquid chromatography - Measurement of cholecalciferol (D3) or ergocalciferol (D2)
SS-EN 16328:2012 Fertilizers - Determination of 3,4-dimethyl-1H-pyrazole phosphate (DMPP) - Method using high-performance liquid chromatography (HPLC)
SS-EN 16155:2012 Foodstuffs - Determination of sucralose - High performance liquid chromatographic method
SS-EN 12857:1999 Foodstuffs - Determination of cyclamate - High performance liquid chromatographic method
SS-EN 14152:2014 Foodstuffs - Determination of vitamin B2 by high performance liquid chromatography
SS-EN 12823-1:2014 Foodstuffs - Determination of vitamin A by high performance liquid chromatography - Part 1: Measurement of all-E-retinol and 13-Z-retinol

Bureau of Indian Standards

IS 16552-2017 Textile Auxiliaries - Chemical Determination of Formaldehyde Content - Method Using High Performance Liquid Chromatography
IS 16297-1-2014 Leather Chemical Determination of Formaldehyde Content Part 1 Method Using High Performance Liquid Chromatography

UNKNOWN

农业农村部公告第316号-6-2020 Determination of ethoxyamidobenzyl ester in feed by high performance liquid chromatography

Lithuanian Standards Office

LST EN 15905-2010 Fertilizers - Determination of 3-methylpyrazole (MP) using high-performance liquid chromatography (HPLC)
LST EN 15652-2009 Foodstuffs - Determination of niacin by HPLC
LST EN 12821-2009 Foodstuffs - Determination of vitamin D by high performance liquid chromatography - Measurement of cholecalciferol (D3) or ergocalciferol (D2)
LST EN 14152-2004 Foodstuffs - Determination of vitamin B2 by HPLC
LST EN 14122-2004 Foodstuffs - Determination of vitamin B1 by HPLC
LST EN 14152-2004/AC-2005 Foodstuffs - Determination of vitamin B2 by HPLC
LST EN 12857-2000 Foodstuffs - Determination of cyclamate - High performance liquid chromatographic method
LST EN 15607-2009 Foodstuffs - Determination of d-biotin by HPLC
LST EN 14164-2008 Foodstuffs - Determination of vitamin B6 by HPLC
LST EN 14122-2004/AC-2005 Foodstuffs - Determination of vitamin B1 by HPLC

German Institute for Standardization

DIN EN 15905:2010-11 Fertilizers - Determination of 3-methylpyrazole (MP) using high-performance liquid chromatography (HPLC); German version EN 15905:2010
DIN EN 15905 E:2009 Draft Document - Fertilizers - Determination of 3-methylpyrazole (MP) using high-performance liquid chromatography (HPLC); German version prEN 15905:2009
DIN EN 15652:2009-09 Foodstuffs - Determination of niacin by HPLC; German version EN 15652:2009
DIN EN 15705:2024 Inorganic fertilizers - Determination of methylen-urea oligomers using high-performance liquid chromatography (HPLC)
DIN EN ISO 17226-1:2008 Leather - Chemical determination of formaldehyde content - Part 1: Method using high performance liquid chromatography (ISO 17226-1:2008); German version EN ISO 17226-1:2008
DIN EN 15905 E:2009-03 Draft Document - Fertilizers - Determination of 3-methylpyrazole (MP) using high-performance liquid chromatography (HPLC); German version prEN 15905:2009
DIN EN 15705:2022-08 Inorganic fertilizers - Determination of methylen-urea oligomers using high-performance liquid chromatography (HPLC); German and English version prEN 15705:2022 / Note: Date of issue 2022-07-01*Intended as replacement for DIN EN 15705 (2010-07).
DIN EN 15705:2024-04 Inorganic fertilizers - Determination of methylen-urea oligomers using high-performance liquid chromatography (HPLC); German version EN 15705:2023
DIN EN 14152:2003 Foodstuffs - Determination of vitamin B2 by HPLC; German version EN 14152:2003
DIN EN 14148:2003-10 Foodstuffs - Determination of vitamin K1 by HPLC; German version EN 14148:2003
DIN 10372:2001 Analysis of tobacco and tobacco products - Determination of glycerol, propylene glycol and sorbitol contents - Method using high performance liquid chromatography
DIN EN 12857:1999-07 Foodstuffs - Determination of cyclamate - Method by high performance liquid chromatography; German version EN 12857:1999
DIN EN 14122:2014-08 Foodstuffs - Determination of vitamin B1 by high performance liquid chromatography; German version EN 14122:2014
DIN EN 15652 E:2007-05 Draft Document - Foodstuffs - Determination of niacin by HPLC; German version prEN 15652:2007
DIN EN 14152:2014-08 Foodstuffs - Determination of vitamin B2 by high performance liquid chromatography; German version EN 14152:2014
DIN EN 14148:2003 Foodstuffs - Determination of vitamin K1 by HPLC; German version EN 14148:2003
DIN EN 15607:2009-09 Foodstuffs - Determination of d-biotin by HPLC; German version EN 15607:2009
DIN EN 15905:2010 Fertilizers - Determination of 3-methylpyrazole (MP) using high-performance liquid chromatography (HPLC); German version EN 15905:2010
DIN EN 12823-1:2014-08 Foodstuffs - Determination of vitamin A by high performance liquid chromatography - Part 1: Measurement of all-E-retinol and 13-Z-retinol; German version EN 12823-1:2014
DIN EN 12823-1:2000 Foodstuffs - Determination of vitamin A by high performance liquid chromatography - Part 1: Measurement of all-trans-retinol and 13-cis-retinol; German version EN 12823-1:2000
DIN EN 16160:2012-05 Animal feeding stuffs - Determination of Hydrocyanic acid by HPLC; German version EN 16160:2012

GCC Standardization Organization

GSO ISO 17372:2014 Animal feeding stuffs -- Determination of zearalenone by immunoaffinity column chromatography and high performance liquid chromatography
GSO ISO 17226-1:2013 Leather -- Chemical determination of formaldehyde content -- Part 1: Method using high performance liquid chromatography
GSO ISO 22855:2010 Fruit and vegetable products - Determination of benzoic acid and sorbic acid concentrations -- High performance liquid chromatography method
GSO ISO 13859:2015 Soil quality -- Determination of polycyclic aromatic hydrocarbons (PAH) by gas chromatography (GC) and high performance liquid chromatography (HPLC)

Ente Nazionale Italiano di Unificazione

UNI EN 15905:2010 Fertilizers - Determination of 3- methylpyrazole (MP) using high- performance liquid chromatography (HPLC)
UNI EN 15652:2009 Foodstuffs - Determination of niacin by HPLC
UNI EN ISO 17226-1:2019 Leather - Chemical determination of formaldehyde content - Part 1: Method using high performance liquid chromatography
UNI EN 15705:2024 Inorganic fertilizers - Determination of methylen-urea oligomers using high-performance liquid chromatography (HPLC)
UNI EN ISO 17226-1:2008 Leather - Chemical determination of formaldehyde content - Part 1: Method using high performance liquid chromatography
UNI ISO 23942:2023 Determination of hydroxytyrosol and tyrosol content in extra virgin olive oils - Reverse phase high performance liquid chromatography (RP-HPLC) method
UNI EN 12821:2000 Foodstuffs - Determination of vitamin D by high performance liquid chromatography - Measurement of cholecalciferol (D3) and ergocalciferol (D2)
UNI EN 14152:2014 Foodstuffs - Determination of vitamin B2 by high performance liquid chromatography
UNI EN 12857:1999 Foodstuffs - Determination of cyclamate - High performance liquid chromatographic method
UNI EN 15721:2013 Ethanol as a blending component for petrol - Determination of higher alcohols, methanol and other impurities - Gaschromatographic method
UNI EN 16328:2013 Fertilizers - Determination of 3,4-dimethyl-1H-pyrazole phosphate (DMPP) - Method using high-performance liquid chromatography (HPLC)
UNI CEN/TS 15360:2006 Fertilizers - Determination of dicyandiamide - Method using high- performance liquid chromatography (HPLC)

European Committee for Standardization (CEN)

EN 15905:2010 Fertilizers - Determination of 3-methylpyrazole (MP) using high-performance liquid chromatography (HPLC)
EN 15705:2023 Inorganic fertilizers - Determination of methylen-urea oligomers using high-performance liquid chromatography (HPLC)
EN 16155:2012 Foodstuffs - Determination of sucralose - High performance liquid chromatographic method
EN 12823-1:2014 Foodstuffs - Determination of vitamin A by high performance liquid chromatography - Part 1: Measurement of all-E-retinol and 13-Z-retinol
EN 14185-1:2003 Non fatty foods - Determination of N-methylcarbamate residues - Part 1: HPLC-method with SPE clean-up
EN 14148:2003 Foodstuffs - Determination of vitamin K1 by HPLC
EN 16160:2012 Animal feeding stuffs - Determination of Hydrocyanic acid by HPLC
EN 12821:2000 Foodstuffs - Determination of Vitamin D by High Performance Liquid Chromatography - Measurement of Cholecalciferol (D3) and Ergocalciferol (D2)

International Organization for Standardization (ISO)

ISO 17226-1:2008 | IULTCS/IUC 19 Leather — Chemical determination of formaldehyde content — Part 1: Method using high performance liquid chromatography
ISO/TS 23942:2020 Determination of hydroxytyrosol and tyrosol content in extra virgin olive oils — Reverse phase high performance liquid chromatography (RP-HPLC)
ISO 17226-1:2018 | IULTCS/IUC 19-1 Leather — Chemical determination of formaldehyde content — Part 1: Method using high performance liquid chromatography
ISO 17226-1:2021 | IULTCS/IUC 19-1 Leather — Chemical determination of formaldehyde content — Part 1: Method using high-performance liquid chromatography
ISO 23942:2022 Determination of hydroxytyrosol and tyrosol content in extra virgin olive oils — Reverse phase high performance liquid chromatography (RP-HPLC) method
ISO 17226-1:2018 Leather — Chemical determination of formaldehyde content — Part 1: Method using high-performance liquid chromatography
ISO 17226-1:2008 Leather - Chemical determination of formaldehyde content - Part 1: Method using high performance liquid chromatography

British Standards Institution (BSI)

BS PD ISO/TS 23942:2020 Determination of hydroxytyrosol and tyrosol content in extra virgin olive oils. Reverse phase high performance liquid chromatography (RP-HPLC)
09/30194905 DC BS EN 15905. Fertilizers. Determination of 3-methylpyrazole (MP) using high-performance liquid chromatography (HPLC)
BS EN ISO 17226-1:2021 Leather. Chemical determination of formaldehyde content. Method using high-performance liquid chromatography
BS EN 15705:2023 Inorganic fertilizers. Determination of methylen-urea oligomers using high-performance liquid chromatography (HPLC)
BS EN 15905:2010 Fertilizers - Determination of 3-methylpyrazole (MP) using high-performance liquid chromatography (HPLC)
BS ISO 23942:2022 Determination of hydroxytyrosol and tyrosol content in extra virgin olive oils. Reverse phase high performance liquid chromatography (RP-HPLC) method
BS EN 18003:2024 Food authenticity. Determination of 16-O-Methylcafestol content of green and roasted coffee. HPLC-method
BS ISO 20163:2019 Vulcanized rubber. Determination of free sulfur by gas chromatography (GC) and high performance liquid chromatography (HPLC)
BS EN 15607:2009 Foodstuffs - Determination of d-biotin by HPLC
BS EN 15652:2009 Foodstuffs - Determination of niacin by HPLC
19/30393126 DC BS ISO 23942. Determination of hydroxytyrosol and tyrosol content in extra virgin olive oils. HPLC method
BS EN 14148:2003 Foodstuffs - Determination of vitamin K1 by HPLC
BS EN ISO 15788-2:2004 Animal and vegetable fats and oils - Determination of stigmastadienes in vegetable oils - Method using high-performance liquid chromatography (HPLC)

The Directorate General of Specifications and Metrology (DGSM)

OS GSO ISO 17226-1:2013 Leather -- Chemical determination of formaldehyde content -- Part 1: Method using high performance liquid chromatography
OS GSO ISO 13859:2015 Soil quality -- Determination of polycyclic aromatic hydrocarbons (PAH) by gas chromatography (GC) and high performance liquid chromatography (HPLC)

Korean Agency for Technology and Standards (KATS)

KS M ISO 17226-1-2023 Leather — Chemical determination of formaldehyde content — Part 1: Method using high-performance liquid chromatography
KS M ISO 17226-1:2019 Leather — Chemical determination of formaldehyde content — Part 1: Method using high performance liquid chromatography
KS M ISO 17226-1-2019 Leather — Chemical determination of formaldehyde content — Part 1: Method using high performance liquid chromatography
KS M ISO 17226-1:2014 Leather — Chemical determination of formaldehyde content — Part 1: Method using high performance liquid chromatography

Kingdom of Bahrain Testing and Metrology Directorate

BH GSO ISO 17226-1:2016 Leather -- Chemical determination of formaldehyde content -- Part 1: Method using high performance liquid chromatography

CEN - European Committee for Standardization

PREN 14152-2012 Foodstuffs - Determination of vitamin B2 by HPLC

IT-UNI

UNI EN ISO 17226-1:2021 Leather - Chemical determination of formaldehyde content - Part 1: Method using high-performance liquid chromatography

VN-TCVN

TCVN 7535-1-2010 Leather.Chemical determination of formaldehyde content.Part 1: Method using high performance liquid chromatography.