boric acid UV spectrophotometry

boric acid UV spectrophotometry, Total:186 items.

The international standard classification for "boric acid UV spectrophotometry" includes: Optics and optical measurements , Biology. Botany. Zoology , Analytical chemistry in general , Alcohols. Ethers , Workplace atmospheres , Waxes, bituminous materials and other petroleum products , Chemical reagents , Soil quality. Pedology , Sugar and sugar products , Fertilizers , Beekeeping , Petroleum products in general , Environment and health protection. Safety (Vocabularies) .

The Chinese standard classification for "boric acid UV spectrophotometry" includes: Electron optics and other physical optics instrument , Agriculture and forestry technology , Basic standards and general methods on chemical fertilizers , Environmental Quality Standard for atmosphere, water and soil , Chemical Measurement , Electrochemical, thermochemistry and optical profile type analyzer , Basic organic chemicals , Labor sanitation , Petroleum wax , Chemical reagent in general , Analysis methods for environmental quality of soils , Sugar refining , Beekeeping, silkworm keeping , Hydrogeological survey , Cosmetics , Fuel oil , Petroleum products in general , Analysis methods for toxic substances in water , Analysis methods for substances in ocean .

Professional Standard - Water Conservancy

SL 93.2-1994 Determination of oil and grease (Vltraviolet spectrophotometric method)
SL 84-1994 Determination of nitrogen(nitrate) (Ultraviolet spectrophtometric method)

Group Standards of the People's Republic of China

T/QAS 082.3-2022 Chemical Analysis of Rock Salt and Glauber's Salt Part 3: Determination of Nitrate by Ultraviolet Spectrophotometry
T/SXCAA 036-2024 UV-Vis Spectrophotometer Period Verification Procedure
T/GXAS 545-2023 Seawater—Rapid determination of petroleum on site—Ultraviolet spectrophotometric method
T/TGIC 010-2024 Textiles - Determination of gingerol content - Ultraviolet Spectrophotometry
T/CSTM 00198-2021 Graphene quantum dots—Determination of enzyme-like activities — Ultraviolet-visible spectrophotometry
T/QAS 035-2021 Determination of nitrate in brine by ultraviolet spectrophotometry
T/TGIC 009-2024 Textiles - Determination of polyphenolcontent - Ultraviolet Spectrophotometery
T/STIC 110086-2023 Double Beam UV-VIS Spectrophotometer

Professional Standard - Machinery

JB/T 6836-1993 UV filter
JB/T 13361-2018 Optical filters for the UV, visible and near-infrared spectral ranges
JB/T 6836-2014 Ultra Violet Filter
JB/T 6778-1993 UV/VIS Near Infrared Spectrophotometer
JB/T 6777-1993 UV/VIS Spectrophotometer

Professional Standard - Agriculture

47药典四部-2020 0401 UV-visible spectrophotometry
2297药典二部-2010 Appendix IV A UV-Vis Spectrophotometry
197药典三部-2020 Spectrophotometry 0401 UV-Vis Spectrophotometry
178药典三部-2015 Spectrophotometry 0401 UV-Vis Spectrophotometry General Principles 19
1759药典一部-2010 Appendix VA UV-Vis Spectrophotometry
NY/T 4306-2023 Determination of activity of papain and bromelain-Ultaraviolet spectrophotometry
67药典四部-2015 0401 UV-visible spectrophotometry
NY/T 1279-2007 Determination of Nitrate in Vegetables and Fruits UV-spectrophotometer
775兽药典一部-2015 Appendix Contents 0400 Spectroscopy 0401 UV-Vis Spectrophotometry
NY/T 1116-2006 Fertilizers - Determination of nitrate nitrogen content - Ultraviolet spectro - Photometric method
772兽药典二部-2015 Appendix Contents 0400 Spectroscopy 0401 UV-Vis Spectrophotometry
153药典三部-2010 Appendix Ⅱ Spectrophotometry ⅡA UV-Vis Spectrophotometry

Professional Standard - Environmental Protection

HJ/T 31-1999 Stationary source emission -- Determination of phosgene -- Aniline ultraviolet spectrophotometric method
HJ 756-2015 Water quality - Determination of butyl xanthate - UV spectrophotometric method
HJ 636-2012 Water quality. Determination of total nitrogen. Alkaline potassium persulfate digestion UV spectrophotometric method
HJ/T 346-2007 Water quality-Determination of nitrate-nitrogen-Ultraviolet spectrophotometry
HJ 970-2018 Water quality - Determination of petroleum - Ultraviolet spectrophotometric method

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

JJG 375-1996 UItraviolet Visible Range Spectrophotometer in Single Beam
JJG 178-2007 Ultraviolet,Visible,Near-Infrared Spectrophotometers
JJG 682-1990 Verification Regulation of Double Beam UV-VIS Spectrophotometers
JJG 689-1990 UV-VIS-NIR Spectrophotometer
JJG(地质) 1002-1990 Verification Regulations for UV/Visible Spectrophotometer

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

GB/T 25481-2010 On-line ultraviolet/visible spectrum analyzer
GB/T 26798-2011 Single beam UV/VIS spectrophotometer
GB/T 34796-2017(英文版) Quantification and purity analysis of nucleic acid concentration in solution—Ultraviolet spectrophotometry
GB/T 11900-1989 Water quality--Determination of trace amounts of arsenic--Spectrophotometric method with silver salt
GB 6912.2-1986 Determination of nitrate and nitrite - Nitrite UV photometric method
GB/T 9721-2006 Chemical reagent - General rules for the molecular absorption spectrophotometry (ultraviolet and visible)
GB/T 14571.4-2008 glycol for industrial use - Determination of ultraviolet transmittance - Ultraviolet spectrophotometric method
GB/T 14571.4-2022 Test method of ethylene glycol for industrial use—Part 4：Determination of ultraviolet transmittance—Ultraviolet spectrophotometric method
GB/T 11081-2005 Standard test method for ultraviolet adsorption of white oils
GB/T 32737-2016 Determination of nitrate nitrogen in soil—Ultraviolet spectrophotometry method
GB/T 26813-2011 Double beam UV/VIS spectrophotometer
GB/T 17135-1997 Soil quality - Determination of total arsenic - Spectrophotometric method with potassium borohyride and silver nitrate
GB/T 21883-2025 Determination of UV Absorption and Fluorescence Intensity of Fluorescent Whitening Agents
GB 6912.1-1986 Determination of nitrate and nitrite - Nitrate UV photometric method
GB/T 23195-2008 Method for the determination of catalase in bee pollen - Ultaraviolet spectrophotometry
GB/T 14540.2-1993 Determination of boron content for compound fertilizers. Azomethine-H spectrophotometric method
GB/T 18932.6-2002 Method for the determination of glycerol contents in honey--UV spectrophotometric method
GB/T 9721-1988 Chemical reagent-General rules for the molecular absorption spectrophotometry(ultraviolet and visible)
GB 9721-1988 Molecular Absorption Spectrophotometry of Chemical Reagents General Rules (Ultraviolet and Visible Parts)
GB/T 16055-1995 Workplace air―Determination of diphenyl-diphenyl ether―Ultraviolet spectrophotometric method
GB/T 16077-1995 Workplace air―Determination of phosgene―Ultraviolet spectrophotometric method
GB/T 34796-2017 Quantification and purity analysis of nucleic acid concentration in solution-Ultraviolet spectrophotometry
GB/T 11894-1989 Water quality--Determination of total nitrogen--Alkaline potassium persulfate digestion-UV spectro photometric method
GB/T 11081-1989 White oils-Determination of ultraviolet absorption

Professional Standard - Commodity Inspection

SN/T 0838.2-2015 Determination of cobalt in boric acid and borax for import and export - Flame atomic absorption spectrometry
SN/T 0838.4-2015 Determination of manganese in boric acid and borax for import and export - Flame atomic absorption spectrometry
SN/T 0859-2016 Determination of dehydroacetic acid in condiments for export- Ultraviolet spectrophotometric method
SN/T 0838.5-2015 Determination of copper in boric acid and borax for import and export. Flame atomic absorption spectrometry
SN/T 0838.1-2015 Determination of chromium in boric acid and borax for import and export. Flame atomic absorption spectrometry
SN/T 0838.3-2015 Determination of nickel in boric acid and borax for import and export - Flame atomic absorption spectrometry

Professional Standard - Geology

DZ/T 0064.59-2021 Methods for analysis of groundwater quality- Part 59: Determination of nitrate- Ultraviolet spectrophotometry
DZ/T 0064.44-1993 Groundwater quality test methods - the determination of boron with H acid-azomethine spectrophotometric determination
DZ/T 0064.59-1993 Groundwater quality test methods - the determination of nitrate radical with ultraviolet spectrophotometric method

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

GJB 4781-1997*GJBz 20413.3-1997 Determination of Sies by UV spectrophotometry
GJB 4781-1997(XG1-2015) Modification sheet 1-2015 for the ultraviolet spectrophotometric method for determination of Sies
GJB 3639-1999(XG1-2015) Determination of Benzene Chloroacetophenone UV Spectrophotometry Modification Sheet 1-2015
GJB 3639-1999 Determination of Benzene Chloroacetophenone UV Spectrophotometry

Shandong Provincial Standard of the People's Republic of China

DB37/T 4149-2020 Determination of water quality UV254 by ultraviolet spectrophotometry

Professional Standard - Light Industry

QB/T 2334-1997 Method for the Qualitative Determination of Ultraviolet Absorbents in Cosmetics - Ultraviolet Spectrophotometry

Shanghai Provincial Standard of the People's Republic of China

DB31/ 4-2-1989 UV sterilizer
DB31/T 232-2000 Determination of Boron in Sewage--Carminic Acid Spectrophotometry

National Metrological Technical Specifications of the People's Republic of China

JJF 1641-2017 Program of Pattern Evaluation of Ultraviolet—Visible Spectrophotometers

Hebei Provincial Standard of the People's Republic of China

DB13/T 2899-2018 Determination of iminodisuccinate content in urea by ultraviolet-visible spectrophotometry

Professional Standard - Petrochemical Industry

SH/T 0966-2017 Determination of aromatic hydrocarbon content in white oil by UV spectrophotometry
SH/T 0181-1992 Method for Determination of Naphthalene Hydrocarbon Content in Jet Fuel (Ultraviolet Spectrophotometry)
SH/T 1498.7-1997 Nylon 66 salt - Determination of UV index - -Ultraviolet spectrophotometric method
SH/T 0181-2005 Standard test method for naphthalene hydrocarbons in jet fuels by ultraviolet spectrophotometry
SH/T 0662-1998 Mineral oil - Determination of ultraviolet absorbance
SH/T 0629-1996 Determination method for arsenic content in naphtha (potassium borohydride-silver nitrate spectrophotometric method)
SH/T 0406-1992 Determination method for vaseline ultraviolet absorbance
SH/T 0409-1992 Determination of aromatic hydrocarbons in liquid paraffin (UV spectrophotometric method)

Professional Standard - Energy

NB/SH/T 0415-2013 Determination Method for Ultraviolet Absorbance and Absorptivity of Petroleum Products
NB/SH/T 0966-2017 Test method for total aromatics in white oil by ultraviolet spectrophotometry

Ministry of Ecology and Environment of the People's Replublic of China

GB 11900-1989 Water quality-Determination of trace amounts of arsenic-Borohydride potassium-nitrale silver spectrophotometric method

Ningxia Provincial Standard of the People's Republic of China

DB64/T 1515-2017 Determination of Total Glucosides in Sheep Placenta Capsules by Ultraviolet Spectrophotometry

Professional Standard - Electron

SJ/T 11475-2014 UV curable coating for optical fibre

Professional Standard - Railway

TB/T 2544.2-1995 Quick Analysis Method for Corrosion Inhibitor in Cooling Water of Railway Diesel Locomotive Determination of Nitrite Ultraviolet Spectrophotometry

Professional Standard - Rare Earth

XB/T 601.6-1993 Lanthanum hexaboride chemical analysis method silicon molybdenum blue spectrophotometric determination of acid soluble silicon

Tianjin Provincial Standard of the People's Republic of China

DB12/T 884-2019 Determination of Polysaccharide Content in Lily Bulbs by UV/Vis Spectrophotometry

Jiangsu Provincial Standard of the People's Republic of China

DB32/T 4344-2022 Marine sediment―Determination of oil―Ultrasonic Extraction-UV spectrophotometric method

Spanish Association for Standardization (UNE)

UNE 84170:1983 OIL OF LEMON. ULTRA-VIOLET SPECTROPHOTO METRIC ANALYSIS
UNE 55047:1973 FATS. SPECTROPHOTOMETRIC MEASURE OF ABSORPTION IN THE ULTRAVIOLET AREA.
UNE 84124:2000 Cosmetic raw materials. Determination of UV-filters by spectrophotometric absorbance.
UNE 84124:2014 Cosmetic raw materials. Determination of UV-filters by spectrophotometric absorbance.
UNE-EN ISO 3656:2011 Animal and vegetable fats and oils - Determination of ultraviolet absorbance expressed as specific UV extinction (ISO 3656:2011)
UNE-EN ISO 3656:2002 Animal and vegetable fats and oils. Determination of ultraviolet absorbance expressed as specific UV extinction. (ISO 3656:2002)

Yugoslav Association for Standardization

JUS H.G8.070-1983 Pure chemicals Boric acid DETERMINATION OF PHOSPHATE CONTENT Spectrophotometric method
JUS H.G8.187-1984 Reagents. di-Sodium tetraborate decahydrate. Determination of phosphate content. Spectrophotome- tric method
JUS H.B8.350-1982 Boric acid for industrial use. Determination of phosphate content Reduced phosphomolybdate spec trop ho tome trk: method
JUS H.B8.358-1982 Examination of technical boric acid, technical boron oxide and technical disodium tetraborate DETERMINATION OF CHROMIUM CONTENT Photometric method
JUS H.B8.359-1982 Boric acid, boric oxide and disodium tetraborates for industrial use. Determination of cobalt content. 2-nitroso-1-naphthol photometric method
JUS H.B8.357-1982 Examination of technical boric acid, technical boron oxide and technical disodium tetraborate DETERMINATION OF MANGANESE CONTENT Photometric method
JUS H.B8.360-1982 Boric acid, boric oxide and disodium tetraborates for industrial use. Determination of nickel content. Furil a-dioxime photometric method

Polski Komitet Normalizacyjny (PKN)

PN Z04200-02-1988 Air purity protection ests for oxalic acid etermination of oxalic acid by ltraviolet absorption spectrophotometry
PN Z04171-02-1986 Air purity protection ests for picric acid etermination of picric acid n work places by UV pectrophotometry absorption
PN C97088-1987 Coal derivative products UV spectrophotometric determination of tar acids content in coal tar and oils
PN C97085-1986 Carbochemical products UV Spectrophotometric determination of naphihalene in coal tar and coal tar oils
PN C97087-1987 UV Spectrophotometric determination of phenols in coke and waste waters
PN C97089-1989 Carbochemical products UV spectrophotometric determination of anthracene in coal tar and coal tar oils

Korean Agency for Technology and Standards (KATS)

KS B 5570-2017 Performance test for UV/Vis spectrophotometer
KS B 5570-2022 Performance test for UV/Vis spectrophotometer
KS H ISO 4735-2019 Oils of Citrus－Determination of CD value by ultraviolet spectrometric analysis
KS I ISO 9390-2006(2021) Water quality－Determination of borate－Spectrometric method using azomethine-H
KS I ISO 9390-2006(2016) Water quality－Determination of borate－Spectrometric method using azomethine-H
KS H ISO 4735:2014 Oils of Citrus－Determination of CD value by ultraviolet spectrometric analysis
KS H ISO 4735:2011 Oils of Citrus-Determination of CD value by ultraviolet spectrometric analysis
KS M 2231-1980 Testing method for naphthalene type hydrocarbon contents in aviation turbine fuels by ultraviolet spectrophotometry
KS I ISO 9390:2006 Water quality－Determination of borate－Spectrometric method using azomethine-H
KS M 2231-2010 Testing method for naphthalene type hydrocarbon contents in aviation turbine fuels by ultraviolet spectrophotometry
KS M ISO 5935-2006 Crude sodium borates for industrial use－Determination of total and alkali-soluble silica contents－Molybdosilicate spectrometric method
KS M ISO 5935:2010 Crude sodium borates for industrial use－Determination of total and alkali-soluble silica contents－Molybdosilicate spectrometric method
KS I ISO 13964:2004 Air quality-Determination of ozone in ambient air-Ultraviolet photometric method
KS I ISO 13964:2014 Air quality — Determination of ozone in ambient air — Ultraviolet photometric method
KS M ISO 5935:2006 Crude sodium borates for industrial use－Determination of total and alkali-soluble silica contents－Molybdosilicate spectrometric method

Netherlands Institute for Standardization

NEN 6581-1985 Rain water - UV-photometric determination of nitrate content

GCC Standardization Organization

GSO ISO 4735:2015 Oils of Citrus -- Determination of CD value by ultraviolet spectrometric analysis
GSO ISO 3656:2015 Animal and vegetable fats and oils -- Determination of ultraviolet absorbance expressed as specific UV extinction
GSO ASTM G130:2010 Standard Test Method for Calibration of Narrow- and Broad- Band Ultraviolet Radiometers Using a Spectroradiometer
GSO ISO 9390:2013 Water quality - Determination of borate - Spectrometric method using azomethine-H
GSO ASTM E958:2021 Standard Practice for Estimation of the Spectral Bandwidth of Ultraviolet-Visible Spectrophotometers

Bureau of Indian Standards

IS 1448 Pt.63-1967 Determination of benzene and toluene by UV spectrophotometry
IS 16200-2015 Animal and Vegetable Fats and Oils - Determination of Ultraviolet Absorbance Expressed as Specific UV Extinction

Kingdom of Bahrain Testing and Metrology Directorate

BH GSO ISO 3656:2016 Animal and vegetable fats and oils -- Determination of ultraviolet absorbance expressed as specific UV extinction
BH GSO ASTM E958:2022 Standard Practice for Estimation of the Spectral Bandwidth of Ultraviolet-Visible Spectrophotometers

American Society for Testing and Materials (ASTM)

ASTM E958-13(2021) Standard Practice for Estimation of the Spectral Bandwidth of Ultraviolet-Visible Spectrophotometers
ASTM E2193-23 Standard Test Method for Ultraviolet Transmittance of Monoethylene Glycol (using Ultraviolet Spectrophotometry)
ASTM E958-93(2005) Standard Practice for Measuring Practical Spectral Bandwidth of Ultraviolet-Visible Spectrophotometers
ASTM E958-13 Standard Practice for Estimation of the Spectral Bandwidth of Ultraviolet-Visible Spectrophotometers
ASTM E958-93(1999) Standard Practice for Measuring Practical Spectral Bandwidth of Ultraviolet-Visible Spectrophotometers

Ente Nazionale Italiano di Unificazione

UNI EN ISO 13900:2003 Steel - Determination of boron content - Curcumin spectrophotometric method after distillation
UNI EN ISO 3656:2002 Animal and vegetable fats and oils - Determination of ultraviolet absorbance expressed as specific UV extinction
UNI EN ISO 3656:2011 Animal and vegetable fats and oils - Determination of ultraviolet absorbance expressed as specific UV extinction
UNI EN ISO 3656:2017 Animal and vegetable fats and oils - Determination of ultraviolet absorbance expressed as specific UV extinction

General Motors Corporation (GM)

GM 9985979-1995 Adhesive, One-Part, Acrylic, UV-Light Cure

German Institute for Standardization

DIN EN ISO 3656:2017-08 Animal and vegetable fats and oils - Determination of ultraviolet absorbance expressed as specific UV extinction (ISO 3656:2011 + Amd 1:2017); German version EN ISO 3656:2011 + A1:2017
DIN EN ISO 3656:2002 Animal and vegetable fats and oils - Determination of ultraviolet absorbance expressed as specific UV extinction (ISO 3656:2002)

International Organization for Standardization (ISO)

ISO 4735:2002 Oils of citrus - Determination of CD value by ultraviolet spectrometric analysis
ISO 3122:1976 Boric acid, boric oxide, disodium tetraborates, sodium perborates and crude borates for industrial use — Determination of iron content — 2,2'- Bipyridyl photometric method
ISO 2214:1972 Boric acid, boric oxide and Disodium tetraborates for industrial use; Determination of manganese content; Formaldehyde oxime photometric method
ISO 9390:1990 Water quality; determination of borate; spectrometric method using azomethine-H
ISO 13964:1998 Air quality - Determination of ozone in ambient air - Ultraviolet photometric method
ISO 4735:1981 Oils of citrus; Determination of CD value by ultraviolet spectrophotometric analysis
ISO 3656:2011 Animal and vegetable fats and oils. Determination of ultraviolet absorbance expressed as specific UV extinction

Gosstandart of Russia

GOST ISO 4735-2015 Essential oils of citrus. Determination of CD value by ultraviolet spectrometric analysis

Standard Association of Australia （SAA）

AS 3753:1990 Recommended practice for chemical analysis by ultraviolet/visible spectrophotometry
AS 3753:2001(R2016) Recommended practice for chemical analysis by ultraviolet/visible spectrophotometry
AS 3753:2001 Recommended practice for chemical analysis by ultraviolet/visible spectrophotometry

Standards Norway

NS 9462-2006 Water quality Determination of UV-absorbance
NS 9462:2006 Water quality — Determination of UV-absorbance
NS-EN ISO 3656:2002 Animal and vegetable fats and oils — Determination of ultraviolet absorbance expressed as specific UV extinction (ISO 3656:2002)
NS-EN ISO 3656:2011 Animal and vegetable fats and oils - Determination of ultraviolet absorbance expressed as specific UV extinction (ISO 3656:2011)

Association Francaise de Normalisation

NF T75-122*NF ISO 4735:2002 Oils of Citrus - Determination of CD value by ultraviolet spectrometric analysis.
NF EN ISO 3656:2011 Fatty substances of animal and vegetable origin - Determination of ultraviolet absorbance, expressed in the form of specific extinction in ultraviolet light

Danish Standards Foundation

DANSK DS/EN ISO 3656:2011 Animal and vegetable fats and oils - Determination of ultraviolet absorbance expressed as specific UV extinction
DANSK DS/EN ISO 3656/A1:2011 Animal and vegetable fats and oils - Determination of ultraviolet absorbance expressed as specific UV extinction
DS/EN ISO 3656:2011 Animal and vegetable fats and oils - Determination of ultraviolet absorbance expressed as specific UV extinction

Belgian Standards Institute

NBN T 03-357-1981 Boric acid, boric oxide, disodium tetraborates, sodium perborates and crude sodium borates for industrial use - Determination of iron content - 2,21-Bipyridyl photometric method
NBN T 03-346-1981 Boric acid, boric oxide and disodium tetraborates for industrial use - Determination of manganese content - Formaldehyde oxime photometric method
NBN T 03-354-1981 DIPHENYLCARBAZIDE PHOTOMETRIC METHOD

American Association of Textile Chemists and Colorists

AATCC EP11-2016 Spectrophotometer UV Energy Calibration Procedure for Optically Brightened Textiles

Türk Standardları Enstitüsü

TS 2566-1977 BORIC ACID, BORIC OXIDE AND DISODIUM TETRABOBATES POR INDUSTRIAL USE-DETERMINATION OF CHROMIUM CONTENT - DIPHENYLCARBAZIDE PHOTOMETRIC METHOD
TS 2569-1977 Boric Acid, Boric Oxide, Disodium Tetraborates, Sodium Perborates And Crude Sodium Borates For Industrial Use - Determination Of Iron Content 2,2' - Bipyridyl Photometric Method

Czech Standards Institute (UNMZ)

CSN 42 0672-11-1993 Aluminium alloys. Determination of boron by the photometric method with carmine acid

British Standards Institution (BSI)

BS EN ISO 3656:2011+A1:2017 Animal and vegetable fats and oils. Determination of ultraviolet absorbance expressed as specific UV extinction
10/30197374 DC BS ISO 3656. Animal and vegetable fats and oils. Determination of ultraviolet absorbance expressed as specific UV extinction
BS EN ISO 3656:2002 Animal and vegetable fats and oils. Determination of ultraviolet absorbance expressed as specific UV extinction

Indonesia Standards

SNI 6989.79:2011 Air dan air limbah - Bagian 79: Cara uji nitrat (NO3--N) dengan Spektrofotometer UV-Visibel secara reduksi kadmium

Lithuanian Standards Office

LST EN ISO 3656:2011 Animal and vegetable fats and oils - Determination of ultraviolet absorbance expressed as specific UV extinction (ISO 3656:2011)

European Committee for Standardization (CEN)

EN ISO 3656:2011 Animal and vegetable fats and oils - Determination of ultraviolet absorbance expressed as specific UV extinction (ISO 3656:2011)