Free radical quantification method

Free radical quantification method, Total:211 items.

The international standard classification for "Free radical quantification method" includes: Stationary source emissions , Metalliferous minerals , Radiation measurements , Electroacoustics , Transport exhaust emissions , Photographic equipment. Projectors , Acoustics measurements and noise abatement in general , Acoustics and acoustic measurements , Hulls and their structure elements .

The Chinese standard classification for "Free radical quantification method" includes: Piston type internal combustion engine and other power equipment in general , Iron ore , Basic standards and general methods , Acoustic Measurement , Underwater sound equipment , Discharge standard for mobile pollution sources , Analysis methods for mobile pollution sources , Camera and photograph instrument , Micro and copier machinery , Overall vessels in general .

Taiwan Provincial Standard of the People's Republic of China

CNS 6680-2006 Essential oils (containing tertiary alcohols) - Estimation of free alcohols content by determination of ester value after acetylation
CNS 10947-1984 Method of Test for Free-Swelling Index of Coal
CNS 6677-2006 Essential oils － Determination of ester values, before and after acetylation, and evaluation of the contents of free and total alcohols
CNS 6678-1980 Determination of Carbonyl Compounds Content of Essential Oils by Free Hydroxylamine Method
CNS 6678-2006 Essential oils - Determination of carbonyl value - Free hydroxylamine method
CNS 6677-1980 Estimation of Free Alcohols Content by Determination of Ester Value after Acetylation

Professional Standard - Tobacco

YC 0004-1992 Method for determination of free burning properties of tobacco leaves

Group Standards of the People's Republic of China

T/AHFIA 069-2022 Determination of Free Radical Scavenging Rate in Baijiu Enzymatic method
T/AHPCA 049-2023 Testing method for anti-wrinkle and firming efficacy of cosmetics (rapid free radical scavenging assay)
T/SHRH 006-2018 Cosmetics -Free Radical (DPPH) Scavenging Test Method

Professional Standard - Agriculture

YC/T 0004-1992 Method for determination of free burning properties of tobacco leaves
GB 3846-1993 Measurement of Free Acceleration Smoke of Diesel Vehicles by Filter Paper Smoke Method

Guangxi Provincial Standard of the People's Republic of China

DB45/T 1495-2017 Determination of Solid Phase Free Radical Content in Cigarette Mainstream Smoke by Electron Spin Resonance Spectroscopy
DB45/T 1494-2017 Determination of gas-phase free radical content in mainstream cigarette smoke by electron spin resonance spectroscopy

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

GB/T 42741-2023 Measuring method for electromagnetic parameters of solid materials using air-freespace
GB 18322-2002 Limits and measurement methods for smoke at free acceleration from agricultural vehicles
GB/T 9487-2008 Diesel engines - Exhaust gas measurement under free acceleration
GB/T 42553-2023 Electroacoustics—Methods to determine corrections to obtain the free-field response of a sound level meter
GB/T 9487-1988 Diesel engines-Exhaust smoke measurement method at free acceleration
GB/T 13240-1991 Iron ore pellets－Determination of relative free-swelling index
GB/T 3846-1993 Measurement method for smoke exhausted from vehicle with diesel engine at free acceleration. Filtermeter
GB 3223-1982 Free-field calibration method of underwater sound transducer

Professional Standard - Machinery

JB/T 9444.8-1999 Basic Environmental Testing Method of Copying Machines - Test Ec: Free Drop Test
JB/T 4022.1-1999 Test method for castability of alloys.Determination of free linear contraction
JB/T 8250.4-1999 Free fall-down test method for cameras

中华人民共和国国家质量监督检验检疫总局、中国国家标准化管理委员会

GB/T 34828-2017 Acoustics-Test methods for the qualification of free-field environments
GB/T 3767-2016 Acoustics-Determination of sound power levels and sound energy levels of noise sources using sound pressure-Engineering methods for an essentially free field over a reflecting plane

Professional Standard - Petroleum

SY 5242-1991 Method for determination of sulfo group content in self-care agents for drilling fluids

未注明发布机构

DIN 10756 E:2020-08 Analysis of honey - Determination of free acidity
DIN EN ISO 26101-1:2023 Acoustics - Test methods for the qualification of the acoustic environment - Part 1: Qualification of free-field environments
ASTM C1444-00 Standard Test Method for Measuring the Angle of Repose of Free-Flowing Mold Powders
ASTM RR-C08-1017 2000 C1444-Standard Test Method for Measuring the Angle of Repose of Free-Flowing Mold Powders
DIN 10756 E:2008-03 Analysis of honey - Determination of free acidity

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

JJG(船舶) 5-1991 Verification method of standard hydrophone spherical wave free field reciprocity method

Beijing Provincial Standard of the People's Republic of China

DB11/ 045-2014 Limits and measurement methods of free acceleration smoke emission from diesel vehicles

Professional Standard-Ships

CB/T 3472-1992 Calculation Method on Overall Free Vibration of Ships
CB/T 3472-2019 Calculation method of free vibrations with ship global model

Professional Standard - Military and Civilian Products

WJ 2133-1993 Test method for free recoil motion of firearms

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

GJB 772.305-1991 Explosives test methods Determination of polygonal index of detonation products of solid explosives Free surface velocity method

European Committee for Standardization (CEN)

EN 12742:1999 Fruit and vegetable juices - Determination of the free amino acids content - Liquid chromatographic method
EN ISO 26101-1:2022 Acoustics - Test methods for the qualification of the acoustic environment - Part 1: Qualification of free-field environments (ISO 26101-1:2021)
EN 13435:2001 Surface active agents - Determination of free amine content of alkyl dimethyl betaines
EN 12963:2001 Adhesives - Determination of free monomer content in adhesives based on synthetic polymers
EN 1243:1998 Adhesives - Determination of Free Formaldehyde in Amino and Amidoformaldehyde Condensates
EN 13320:2002 Surface Active Agents - Gas Chromatographic Trace Determination of Free Ethylene Oxide in Ethoxylates
prEN ISO 3744 Acoustics - Determination of sound power levels of noise sources using sound pressure - Engineering methods for an essentially free field over a reflecting plane (ISO/DIS 3744:2023)

British Standards Institution (BSI)

BS EN 12742:1999 Fruit and vegetable juices - Determination of free amino acids content - Liquid chromatographic method
BS ISO 26101:2017 Acoustics. Test methods for the qualification of free-field environments
BS EN 13435:2002 Surface active agents - Determination of free amine content of alkyl dimethyl betaines
BS 4323:1979 Method for determination of dimensional change of fabrics induced by free steam
BS EN ISO 3744:1995 Acoustics - Determination of sound power levels of noise sources using sound pressure - Engineering method in an essentially free field over a reflecting plane
BS EN 13320:2002 Surface active agents - Gas chromatographic trace determination of free ethylene oxide in ethoxylates
15/30318747 DC BS ISO 26101 AMD1. Acoustics. Test methods for the qualification of free-field environments
BS EN ISO 26101-1:2022 Acoustics. Test methods for the qualification of the acoustic environment - Qualification of free-field environments
BS EN 61094-3:2016 Electroacoustics. Measurement microphones. Primary method for free-field calibration of laboratory standard microphones by the reciprocity technique
BS EN 62585:2012 Electroacoustics. Methods to determine corrections to obtain the free-field response of a sound level meter
BS 6986-2:1988 Analysis of instant tea. Methods for determination of free-flow and compacted bulk densities
BS EN 61094-3:1996 Specification for measurement microphones - Primary method for free-field calibration of laboratory standard microphones by the reciprocity technique
23/30433779 DC BS EN ISO 3744. Acoustics. Determination of sound power levels of noise sources using sound pressure. Engineering methods for an essentially free field over a reflecting plane
BS EN 27842:1991 Methods for determination of discharge capacity of automatic steam traps

Standard Association of Australia （SAA）

AS 2360.8.1:2007 Hydrometry - Measurement of free surface flow in closed conduits - Methods
AS 4155.13:1993 Test methods for general access floors - Test for pedestal free movement by horizontal load
AS 5335:2019 Acoustics — Determination of sound power levels and sound energy levels of noise sources using sound pressure — Engineering methods for an essentially free field over a reflecting plane

Institute of Electrical and Electronics Engineers (IEEE)

IEEE 1652-2008 Free Field Acoustic Reference to Telephony Measurements

ES-AENOR

UNE 33-128-1982 Test methods for wine vinegar. Determination of content in free sulfur dioxide

CZ-CSN

CSN 65 4826-1982 Fertilizers. Method for the determination of free flowlng property
CSN 42 0840-1985 Tungsten free sintered carbides. Technical regulations and testing methods
CSN 56 0280 Cast.5-1983 Methods of test for fermented obacco and tobacco products. etermination of rate of free ombustion by measurement off oss of mass
CSN 57 3100-2002 Poultry, not cut in pieces and cuts, fresh and frozen - Methods of testinng - Determination of free water content
CSN 73 0545-1970 Teating of thermal resistance of building elements by stationary heat f low method

ASHRAE - American Society of Heating@ Refrigerating and Air-Conditioning Engineers@ Inc.

ASHRAE 4039-1997 Tuning Method of Two Degrees of Freedom PID Controller

SCC

AWWA WQTC65768 Photodegradation of Chlorpyrifos: The Roles of Carbonate Radicals and Hydroxyl Radicals
DANSK DS/ISO 26101:2017 Acoustics – Test methods for the qualification of free-field environments
AWWA WQTC65824 Methods for Detecting, Identifying and Quantitating Free-Living Amebae in Water
10/30197204 DC BS ISO 26101. Acoustics. Test methods for the qualification of free-field environments
AS 2597.8:1983 Methods of testing seat belts - Determination of free-end device strength
AWWA WQTC69303 Quantification of the Hydroxyl Radical Scavenging Capacity during Advanced Oxidation Treatment
AWWA WQTC58931 Determination of OH Radical CT with Several AOP Reactions
BS ISO 26101-1:2021 Acoustics. Test methods for the qualification of the acoustic environment-Qualification of free-field environments
CEI EN 62585:2013 Electroacoustics - Methods to determine corrections to obtain the free-field response of a sound level meter
DANSK DS/EN 62585:2012 Electroacoustics - Methods to determine corrections to obtain the free-field response of a sound level meter
UNE-EN ISO 3744:1996 ACOUSTICS. DETERMINATION OF SOUND POWER LEVELS OF NOISE SOURCES USING SOUND PRESSURE. ENGINEERING METHOD IN AN ESSENTIALLY FREE FIELD OVER A REFLECTING PLANE. (ISO 3744:1994).
DANSK DS/ISO 26101-1:2021 Acoustics – Test methods for the qualification of the acoustic environment – Part 1: Qualification of free-field environments
10/30194376 DC BS EN 62585. Electroacoustics. Methods to determine corrections to obtain the free-field response of a sound level meter
AWWA WQTC58834 Oxidation of MIB and Geosmin by Ozone and Hydroxyl Radicals
AWWA WQTC55067 Quantifying Hydroxyl Radical Exposure: A Tool for Assessing Advanced Oxidation Process (O3-H2O2) Destruction of MTBE
09/30201631 DC BS EN ISO 3745. Acoustics. Determination of sound power levels of noise sources using sound pressure. Engineering method in an essentially free field over a reflecting plane
CAN/CGSB 4.2 No.63.4-2007/ISO 14184-1:1998 Méthodes pour épreuves textiles: Textiles - Dosage du formaldéhyde - Partie 1: Formaldéhyde libre et hydrolysé (Méthode par extraction deau)
UNE-EN ISO 3744:2010 Acoustics - Determination of sound power levels of noise sources using sound pressure - Engineering method in an essentially free field over a reflecting plane (ISO 3744:1994)
AENOR UNE 49903-3:1963 TEST METHODS OF WOODEN PALLETS. FREE FALL TEST ON ANGLE
BS 5381-3:1979 Methods for determination of physical properties of tobacco and tobacco products-Determination of free combustion rate of cigarettes
DANSK DS/EN ISO 3744:2010 Acoustics - Determination of sound power levels and sound energy levels of noise sources using sound pressure - Engineering methods for an essentially free field over a reflecting plane
NS-EN ISO 3744:1995 Acoustics — Determination of sound power levels of noise sources using sound pressure — Engineering method in an essentially free field over a reflecting plane (ISO 3744:1994)
ASA S12.34-1988(R1997) American National Standard Engineering Methods for the Determination of Sound Power Levels of Noise Sources for Essentially Free-Field Conditions Over a Reflecting Plane
BS EN ISO 11201:2009 Acoustics. Noise emitted by machinery and equipment. Measurement of emission sound pressure levels at a work station and at other specified positions. Engineering method in an essentially free field over a reflecting plane

Korean Agency for Technology and Standards (KATS)

KS B ISO TR 9824-1:2015 Measurement of free surface flow in closed conduits－Part 1：Methods
KS B ISO TR 9824-1:2003 Measurement of free surface flow in closed conduits-Part 1:Methods
KS B ISO TR 9824-1-2003(2013) Measurement of free surface flow in closed conduits－Part 1：Methods
KS C IEC 61094-3:2003 Measurement microphone-Part 3:Primary method for free-field calibration of laboratory standard microphones by the reciprocity technique
KS C IEC 62585-2017(2022) Electroacoustics ― Methods to determine corrections to obtain the free-field response of a sound level meter
KS B 0435-2021 Machining allowance for open die forgings
KS C IEC 62585-2022 Electroacoustics ― Methods to determine corrections to obtain the free-field response of a sound level meter
KS C IEC 62585:2017 Electroacoustics ― Methods to determine corrections to obtain the free-field response of a sound level meter
KS B 0834-1995 METHOD OF FREE BEND TEST FOR WELDED BUTT JOINT
KS K 0473-1995 Testing method for shrinkage of cloth:Free-steam method
KS I ISO 3744:2021 Acoustics — Determination of sound power levels and sound energy levels of noise sources using sound pressure — Engineering methods for an essentially free field over a reflecting plane
KS C IEC 61094-3-2003(2008) Measurement microphone－Part 3：Primary method for free-field calibration of laboratory standard microphones by the reciprocity technique

GSO

BH GSO ISO 26101:2016 Acoustics - Test methods for the qualification of free-field environments
OS GSO ISO 26101:2013 Acoustics - Test methods for the qualification of free-field environments
OS GSO ISO 3744:2011 Acoustics - Determination of sound power levels of noise sources using sound pressure - Engineering method in an essentially free field over a reflecting plane
OS GSO ASTM D1709:2014 Standard Test Methods for Impact Resistance of Plastic Film by the Free-Falling Dart Method
GSO ASTM D1709:2024 Standard Test Methods for Impact Resistance of Plastic Film by the Free-Falling Dart Method
BH GSO ASTM D1709:2015 Standard Test Methods for Impact Resistance of Plastic Film by the Free-Falling Dart Method
OS GSO IEC 62585:2017 Electroacoustics - Methods to determine corrections to obtain the free-field response of a sound level meter
GSO IEC 62585:2017 Electroacoustics - Methods to determine corrections to obtain the free-field response of a sound level meter
GSO ISO 11201:2011 Acoustics - Noise emitted by machinery and equipment - Measurement of emission sound pressure levels at a work station and at other specified positions - Engineering method in an essentially free field over a reflecting plane

Danish Standards Foundation

DS/ISO 26101:2012 Acoustics - Test methods for the qualification of free-field environments
DS/EN 62585:2013 Electroacoustics - Methods to determine corrections to obtain the free-field response of a sound level meter
DS/ISO 26101-1:2021 Acoustics – Test methods for the qualification of the acoustic environment – Part 1: Qualification of free-field environments
DS/EN ISO 3744:2011 Acoustics - Determination of sound power levels and sound energy levels of noise sources using sound pressure - Engineering methods for an essentially free field over a reflecting plane

Association Francaise de Normalisation

NF T73-297*NF EN 15608:2008 Surface active agents - Quantitative determination of free fatty acid in alkylamidopropylbetaines - Gas-chromatographic method.
NF T77-151:1986 Basic silicones for industrial use. Determination of alcoxy radicals. Gas chromatographic method.
NF V76-115*NF EN 12742:1999 Fruit and vegetable juices. Determination of the free amino acids content. Liquid chromatographic method.
NF T76-006*NF EN 1243:2011 Adhesives - Determination of free formaldehyde in amino and amidoformaldehyde condensates.
NF EN ISO 748:2021 Hydrometry - Measurement of the flow rate of free surface flows - Methods for exploring the velocity field using point velocity measurement
NF X10-390-1:1991 Measurement of free surface flow in closed conduits-Part1:Methods
NF T76-161*NF EN 12963:2001 Adhesives - Determination of free monomer content in adhesives based on synthetic polymers
NF T73-278*NF EN 13320:2002 Surface active agents - Gas chromatographic trace determination of free ethylene oxide in ethoxylates
NF S30-015-1*NF ISO 26101-1:2021 Acoustics - Test methods for the qualification of the acoustic environment - Part 1 : qualification of free-field environments
NF T30-404:1998 Binders for paints and varnishes. Determination of free-formaldehyde content of amino resins. Sodium sulfite titrimetric method.
NF EN 62585:2013 Electroacoustics - Method for determining corrections to obtain the free-field response of a sound level meter
NF T76-006:1998 Adhesives. Determination of free formaldehyde in amino and amidoformaldehyde condensates.
NF C97-333:1996 Measurement microphones. Part 3 : primary method for free-field calibration of laboratory standard microphones by the reciprocity technique.

RU-GOST R

GOST R 52642-2006 Implants for surgery. Method determination of the radical-formation activity of wear particles of orthopedic materials
GOST 13979.8-1969 Oilcakes and oilmeals. Methods of determination for free and combined hydrogen cyanide
GOST R ISO 26101-2014 Acoustics. Test methods for the qualification of free-field environments
GOST R 8.715-2010 State system for ensuring the uniformity of measurements. State verification schedule for free-fall acceleration measuring means
GOST 18425-1973 Complete, filled transport packages. Vertical impact test by dropping

PL-PKN

PN C89096-1972 Piastics sheeting Test for impacf resistance by ?he free faiiing dart meihod
PN P04642-1971 Textiles Determination of free acides and alcalis content
PN C04152-1968 Petroleum products De?ermination o? free alkali and ?ree organie acid in the greases
PN C05061-1986 Rubbers, latices synthetic Determination the free monomers content by the gas chromatographic method

AR-IRAM

IRAM 12 354-1962 Confirm 2,4. Method for determination of the contents of dichlorophenoxyacetic acid, 2,4,5-trichlorophenoxyacetic acid and 2,4-dichlorophenoxybutyric acid when complete, free and combined with their respective esters
IRAM 13 308-1962 How to determine the content of free phenol in plastics made from phenol

RO-ASRO

STAS 723/11-1975 LEATHERS Identification and quantitalivc determination of free sulphur
STAS 1458-1987 CAST TRON AND STEELS Determination of free carbon content
STAS 2213/10-1987 SWEET PHODUCTS Determination of total anii free sul- phur dioxide
STAS SR 13235-1994 Adhesives for footwear Adhesives based on polyurethanic elastomers Determination of free hydroxyl groups
STAS 7516-1980 POLYETHYLENE Determination of impact strength of foils (films) by free falling method
STAS R 8972/1-1971 Hydronutry WATER FLOW MEASEREMENT IN the free level flowsystems Cheminaical method

ZA-SANS

SANS 3744:1994 Acoustics - Determination of sound power levels of noise sources using sound pressure - Engineering method in an essentially free field over a reflecting plane
SANS 5855:2008 Free water content of aggregates

International Organization for Standardization (ISO)

ISO 26101-1:2021 Acoustics - Test methods for the qualification of the acoustic environment - Part 1: Qualification of free-field environments
ISO/TR 9824-1:1990 Measurement of free surface flow in closed conduits; part 1: methods
ISO/DIS 3744 Acoustics — Determination of sound power levels of noise sources using sound pressure — Engineering methods for an essentially free field over a reflecting plane

PT-IPQ

NP 1224-2002 Meat and meat products Determination of free fat content Reference method

HU-MSZT

MSZ 7553-1961 Checking plastics by measuring the content of free ammonia and amino groups
MSZ 5200/7.lap-1964 Generator water detection. Free mineral content definition

American Society for Testing and Materials (ASTM)

ASTM D8301-21 Standard Test Method for Determination of the Content of Nitroxide Radical (4-Hydroxy-2,2,6,6-tetramethylpiperidine-1-oxyl) in Butadiene, Styrene and Isoprene by Cyclic Voltammetry Method
ASTM D720-91(2004)e1 Standard Test Method for Free-Swelling Index of Coal
ASTM D7743-12 Standard Test Method for Measuring the Minimum Fluidization Velocities of Free Flowing Powders
ASTM D720-91(2010) Standard Test Method for Free-Swelling Index of Coal
ASTM D720/D720M-15e1 Standard Test Method for Free-Swelling Index of Coal
ASTM D720/D720M-22 Standard Test Method for Free-Swelling Index of Coal
ASTM D720/D720M-24 Standard Test Method for Free-Swelling Index of Coal
ASTM D720/D720M-23 Standard Test Method for Free-Swelling Index of Coal
ASTM D720/D720M-15 Standard Test Method for Free-Swelling Index of Coal
ASTM E2919-14 Standard Test Method for Evaluating the Performance of Systems that Measure Static, Six Degrees of Freedom 40;6DOF41;, Pose
ASTM D1709-22 Standard Test Methods for Impact Resistance of Plastic Film by the Free-Falling Dart Method
ASTM D720-91(1999) Standard Test Method for Free-Swelling Index of Coal
ASTM D1709-16a Standard Test Methods for Impact Resistance of Plastic Film by the Free-Falling Dart Method
ASTM D1709-16 Standard Test Methods for Impact Resistance of Plastic Film by the Free-Falling Dart Method
ASTM D8361-20 Standard Test Method for Total Organic Carbon in Water by Two Stage Wet Chemical Catalyzed Hydroxyl Radical Oxidation with Infra-Red Detection of Resulting Carbon Dioxide
ASTM E2919-22 Standard Test Method for Evaluating the Performance of Systems that Measure Static, Six Degrees of Freedom (6DOF), Pose
ASTM E3064-16 Standard Test Method for Evaluating the Performance of Optical Tracking Systems that Measure Six Degrees of Freedom (6DOF) Pose

BE-NBN

NBN-EN 23908-1993 Hardmetals. Determination of insoluble (free) carbon content. Gravimetric method (ISO 3908: 1985)

German Institute for Standardization

DIN EN 12963:2001 Adhesives - Determination of free monomer content in adhesives based on synthetic polymers; German version EN 12963:2001
DIN 10756:1995 Analysis of honey - Determination of free acidity
DIN EN ISO 3744:2023-02 Acoustics - Determination of sound power levels of noise sources using sound pressure - Engineering methods for an essentially free field over a reflecting plane (ISO/DIS 3744:2023); German and English version prEN ISO 3744:2023 / Note: Date of issue 2...
DIN EN 62585:2013-03 Electroacoustics - Methods to determine corrections to obtain the free-field response of a sound level meter (IEC 62585:2012); German version EN 62585:2012
DIN EN ISO 3744:2023 Acoustics - Determination of sound power levels of noise sources using sound pressure - Engineering methods for an essentially free field over a reflecting plane (ISO/DIS 3744:2023); German and English version prEN ISO 3744:2023
DIN EN ISO 3744:2011-02 Acoustics - Determination of sound power levels and sound energy levels of noise sources using sound pressure - Engineering methods for an essentially free field over a reflecting plane (ISO 3744:2010); German version EN ISO 3744:2010 / Note: To be rep...

KR-KS

KS I ISO 3744-2015 Acousitcs — Determination of sound power levels and sound energy levels of noise sources using sound pressure — Engineering methods for an essentially free field over a reflecting plane
KS C IEC 62585-2017 Electroacoustics ― Methods to determine corrections to obtain the free-field response of a sound level meter
KS I ISO 3744-2021 Acoustics — Determination of sound power levels and sound energy levels of noise sources using sound pressure — Engineering methods for an essentially free field over a reflecting plane

AENOR

UNE 40152:1984 METHOD OF TEST FOR THE MEASURE OF LIBRE LENGTH BY INDIVIDUAL FIBRES TESTING
UNE-EN 62585:2013 Electroacoustics - Methods to determine corrections to obtain the free-field response of a sound level meter
UNE-EN 61094-8:2013 Measurement microphones. Part 8: Methods for determining the free-field sensitivity of working standard microphones by comparison

Japanese Industrial Standards Committee (JISC)

JIS Z 3123:1984 Method of free bend test for butt welded joint
JIS B 0418:1985 Machining allowance for open die forgings
JIS P 8124:1976 Determination of grammage of paper
JIS Z 8733:2000 Acoustics -- Determination of sound power levels of noise sources using sound pressure -- Engineering method in an essentially free field over a reflecting plane

American National Standards Institute （ANSI)

ANSI/IEEE 1652:2008 Standard for the Application of Free Field Acoustic Reference to Telephony Measurements

SAE - SAE International

SAE AIR1672-1980 PRACTICAL METHODS TO OBTAIN FREE-FIELD SOUND PRESSURE LEVELS FROM ACOUSTICAL MEASUREMENTS OVER GROUND SURFACES

Society of Automotive Engineers (SAE)

SAE AIR1672A-1981 PRACTICAL METHODS TO OBTAIN FREE-FIELD SOUND PRESSURE LEVELS FROM ACOUSTICAL MEASUREMENTS OVER GROUND SURFACES
SAE AIR1672B-2012 Practical Methods to Obtain Free-Field Sound Pressure Levels from Acoustical Measurements Over Ground Surfaces
SAE AIR1672C-2020 Practical Methods to Obtain Free-Field Sound Pressure Levels from Acoustical Measurements Over Ground Surfaces
SAE AIR1672B-1983 Practical Methods to Obtain Free-Field Sound Pressure Levels from Acoustical Measurements over Ground Surfaces

CL-INN

INDITECNOR 20-20 Carbon: Measurement of Free Diffusion Values

Indonesia Standards

SNI 07-4076-1996 Method of free bend test for butt welded joint
SNI 3638-2012 Metode uji kuat tekan-bebas tanah kohesif

European Committee for Electrotechnical Standardization（CENELEC）

EN 62585:2012 Electroacoustics - Methods to determine corrections to obtain the free-field response of a sound level meter
EN 61094-3:1995 Measurement Microphones Part 3: Primary Method for Free-Field Calibration of Laboratory Standard Microphones by the Reciprocity Technique
EN 61094-3:2016 Electroacoustics - Measurement microphones - Part 3: Primary method for free-field calibration of laboratory standard microphones by the reciprocity technique

IN-BIS

IS 2720 Pt.40-1977 Soil Test Methods Part XL Determination of Soil Free Swell Index
IS 4848-1981 Method for determination of apparent density of free-flowing powders FdR Powder metallurgy applications

Federal Aviation Administration (FAA)

FAA 14 CFR PART 272-2011 ESSENTIAL AIR SERVICE TO THE FREELY ASSOCIATED STATES

ES-UNE

UNE-EN ISO 26101-1:2023 Acoustics - Test methods for the qualification of the acoustic environment - Part 1: Qualification of free-field environments (ISO 26101-1:2021)

GOSTR

GOST R ISO 17190-5-2017 Urine-absorbing aids for incontinence. Test methods for characterizing polymer-based absorbent materials. Part 5. Gravimetric determination of free swell capacity in saline solution
GOST 18425-2018 Complete, filled transport packages. Vertical impact test by dropping

US-MSFC

MSFC NASA MWI 1380.1 REV C-2008 HANDLING OF FREEDOM OF INFORMATION ACT REQUESTS

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