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How to use the flow meter

How to use the flow meter, Total:159 items.

In the international standard classification, How to use the flow meter involves: Measurement of fluid flow, External water conveyance systems, Thermodynamics and temperature measurements, Installations in buildings, Powder metallurgy, Linear and angular measurements, Petroleum, petroleum products and natural gas handling equipment, Equipment for petroleum and natural gas industries, Welding, brazing and soldering, Road engineering, Geology. Meteorology. Hydrology, Elements of buildings, Structures of buildings, Protection of and in buildings, Fluid power systems, Electricity. Magnetism. Electrical and magnetic measurements, Measurement of volume, mass, density, viscosity, Reinforced plastics, Soil quality. Pedology, Cellular materials, Radiation measurements, Construction materials.


American Society of Mechanical Engineers (ASME), How to use the flow meter

US-CFR-file, How to use the flow meter

  • CFR 33-149.403-2013 Navigation and navigable waters. Part149:Deepwater ports: design, construction, and equipment. Section149.403:How may I request the use of alternate or supplemental firefighting and fire prevention equipment or procedures?

AT-ON, How to use the flow meter

  • ONORM B 2403-1998 Liquid flow measurement in using propeller-type current meters
  • OENORM EN ISO 18589-6:2021 Measurement of radioactivity in the environment - Soil - Part 6: Gross alpha and gross beta activities - Test method using gas-flow proportional counting (ISO 18589-6:2019)

American National Standards Institute (ANSI), How to use the flow meter

Indonesia Standards, How to use the flow meter

  • SNI 8066-2015 Tata cara pengukuran debit aliran sungai dan saluran terbuka menggunakan alat ukur arus dan pelampung

ASHRAE - American Society of Heating@ Refrigerating and Air-Conditioning Engineers@ Inc., How to use the flow meter

  • ASHRAE 41.10-2013 Standard Methods for Refrigerant Mass Flow Measurement Using Flowmeters
  • ASHRAE 41.9-2018 Standard Methods for Refrigerant Mass Flow Measurements Using Calorimeters
  • ASHRAE 3705-1993 Comparative Study of Room Airflow: Numerical Prediction Using Computational Fluid Dynamics and Full- Scale Experimental Measurements
  • ASHRAE 4155-1998 Advanced Feedback Control of Indoor Air Quality Using Real-Time Computational Fluid Dynamics

American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE), How to use the flow meter

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China, How to use the flow meter

  • GB/T 18659-2023 Guidelines for the use of electromagnetic flowmeters for measuring fluid flow in closed pipes
  • GB/T 18660-2002 Measurement of conductive liquid flow in closed conduits--Method using electromagnetic flowmeters
  • GB/T 20728-2006 Measurement of fluid flow in closed conduits Guidance to the selection installation and use of Coriolis meters
  • GB/T 30500-2014 Ultrasonic gas flow meter performance online audit.Method using speed of sound checking

SAE - SAE International, How to use the flow meter

  • SAE AIR6202-2012 Test Cell Mass Fuel Flow Measurement Using Coriolis Flow Meters

Society of Automotive Engineers (SAE), How to use the flow meter

  • SAE AIR6202-2017 Test Cell Mass Fuel Flow Measurement Using Coriolis Flow Meters

British Standards Institution (BSI), How to use the flow meter

  • BS ISO/TS 15768:2000 Measurement of liquid velocity in open channels - Design, selection and use of electromagnetic current meters
  • BS EN ISO 20456:2019 Measurement of fluid flow in closed conduits. Guidance for the use of electromagnetic flowmeters for conductive liquids
  • BS ISO/TR 12765:1998 Measurement of fluid flow in closed conduits. Methods using transit-time ultrasonic flowmeters
  • 16/30323541 DC BS ISO 20456. Measurement of fluid flow in closed conduits. Guidance for the use of electromagnetic flowmeters for conductive liquids
  • BS ISO/TR 12765:1999 Measurement of fluid flow in closed conduits. Methods using transit-time ultrasonic flowmeters
  • BS ISO 22192:2021 Bunkering of marine fuel using the Coriolis mass flow meter (MFM) system
  • 20/30360560 DC BS ISO 22192. Bunkering of marine fuel using the Coriolis mass flow meter (MFM) system
  • BS EN ISO 4490:2014 Metallic powders. Determination of flow rate by means of a calibrated funnel (Hall flowmeter)
  • BS EN ISO 4490:2008 Metallic powders - Determination of flow time by means of a calibrated funnel (Hall flowmeter)
  • BS ISO 10790:2015 Measurement of fluid flow in closed conduits. Guidance to the selection, installation and use of Coriolis flowmeters (mass flow, density and volume flow measurements)
  • BS ISO 7194:2008 Measurement of fluid flow in closed conduits - Velocity-area methods of flow measurement in swirling or asymmetric flow conditions in circular ducts by means of current-meters or Pitot statics tubes
  • 23/30441174 DC BS ISO 6996. Bunkering. Meter verification using master Coriolis mass flow meter
  • BS ISO 3354:2008 Measurement of clean water flow in closed conduits - Velocity-area method using current-meters in full conduits and under regular flow conditions
  • BS ISO 10790:1999 Measurement of fluid flow in closed conduits. Guidance to the selection, installation and use of Coriolis meters (mass flow, density and volume flow measurements)
  • BS ISO 6358-3:2014 Pneumatic fluid power. Determination of flow-rate characteristics of components using compressible fluids. Method for calculating steady-state flow-rate characteristics of systems
  • BS ISO 1088:2007 Hydrometry. Velocity-area methods using current-meters. Collection and processing of data for determination of uncertainties in flow measurement
  • 23/30441171 DC BS ISO 6963. Bunker cargo loading from oil terminal to bunker tanker using Coriolis mass flow meter
  • 18/30350536 DC BS ISO 21903. Refrigerated Hydrocarbon Fluids. Dynamic Measurement. Guidance for the calibration, installation and use of flow meters for LNG and other refrigerated hydrocarbon fluids
  • BS EN ISO 18589-6:2021 Measurement of radioactivity in the environment. Soil - Gross alpha and gross beta activities. Test method using gas-flow proportional counting
  • BS 7856:2013 Code of practice for special design and other features of alternating current watthour meters for active energy (MID accuracy classes A and B) for use in the UK

International Organization for Standardization (ISO), How to use the flow meter

  • ISO/TR 12765:1998 Measurement of fluid flow in closed conduits - Methods using transit-time ultrasonic flowmeters
  • ISO/TR 6817:1980 Measurement of conductive fluid flowrate in closed conduits — Method using electromagnetic flowmeters
  • ISO 20456:2017 Measurement of fluid flow in closed conduits - Guidance for the use of electromagnetic flowmeters for conductive liquids
  • ISO/TS 15768:2000 Measurement of liquid velocity in open channels - Design, selection and use of electromagnetic current meters
  • ISO 22192:2021 Bunkering of marine fuel using the Coriolis mass flow meter (MFM) system
  • ISO 7194:2008 Measurement of fluid flow in closed conduits - Velocity-area methods of flow measurement in swirling or asymmetric flow conditions in circular ducts by means of current-meters or Pitot static tubes
  • ISO/DIS 6996:2023 Bunkering - Meter verification using master Coriolis mass flow meter
  • ISO 3354:2008 Measurement of clean water flow in closed conduits - Velocity-area method using current-meters in full conduits and under regular flow conditions
  • ISO 10790:1999 Measurement of fluid flow in closed conduits - Guidance to the selection, installation and use of Coriolis meters (mass flow, density and volume flow measurements)
  • ISO 10790:2015 Measurement of fluid flow in closed conduits - Guidance to the selection, installation and use of Coriolis flowmeters (mass flow, density and volume flow measurements)
  • ISO 748:2021 Hydrometry — Measurement of liquid flow in open channels — Velocity area methods using point velocity measurements
  • ISO 1088:2007 Hydrometry - Velocity-area methods using current-meters - Collection and processing of data for determination of uncertainties in flow measurement
  • ISO/DIS 6963:2023 Bunker cargo loading from oil terminal to bunker tanker using Coriolis mass flow meter
  • ISO 6358-3:2014 Pneumatic fluid power - Determination of flow-rate characteristics of components using compressible fluids - Part 3: Method for calculating steady-state flow-rate characteristics of systems
  • ISO 10790:1999/Amd 1:2003 Measurement of fluid flow in closed conduits - Guidance to the selection, installation and use of Coriolis meters (mass flow, density and volume flow measurements); Amendment 1: Guidance for gas measurement

KR-KS, How to use the flow meter

  • KS B ISO TR 11627-2014 Measurement of liquid flow in open channels — Computing stream flow using an unsteady flow model
  • KS B ISO 10790-2003(2023) Measurement of fluid flow in closed conduits-Guidance to the selection, installation and use of Coriolis meters (mass flow, density and volume flow measurements)
  • KS B ISO 1088-2021 Hydrometry — Velocity-area methods using current-meters —Collection and processing of data for determination of uncertainties in flow measurement
  • KS B ISO TS 15768-2020 Measurement of liquid velocity in open channels —Design, selection and use of electromagnetic current meters

Danish Standards Foundation, How to use the flow meter

  • DS/EN ISO 748:2008 Hydrometry - Measurement of liquid flow in open channels using current-meters or floats
  • DS/EN ISO 6817:1996 Measurement of conductive liquid flow in closed conduits - Method using electromagnetic flowmeters
  • DS/ISO 18589-6:2021 Measurement of radioactivity in the environment – Soil – Part 6: Gross alpha and gross beta activities – Test method using gas-flow proportional counting
  • DS/EN ISO 18589-6:2021 Measurement of radioactivity in the environment – Soil – Part 6: Gross alpha and gross beta activities – Test method using gas-flow proportional counting (ISO 18589-6:2019)
  • DS/CEN/TR 15131:2006 Thermal performance of building materials - The use of interpolating equations in relation to thermal measurement on thick specimens - Guarded hot plate and heat flow meter apparatus

Association Francaise de Normalisation, How to use the flow meter

  • NF X10-121*NF EN ISO 20456:2019 Measurement of fluid flow in closed conduits - Guidance for the use of electromagnetic flowmeters for conductive liquids
  • NF EN ISO 20456:2019 Mesurage du débit des fluides dans les conduites fermées - Lignes directrices pour l'utilisation des débitmètres électromagnétiques dans les liquides conducteurs
  • NF ISO 2715:2020 Hydrocarbures liquides - Mesurage volumétrique au moyen de compteurs à turbine
  • NF ISO 14934-4:2015 Essais au feu - Étalonnage et utilisation des appareils de mesure du flux thermique - Partie 4 : lignes directrices pour l'utilisation des fluxmètres thermiques dans les essais au feu
  • NF E49-160-3*NF ISO 6358-3:2015 Pneumatic fluid power - Determination of flow-rate characteristics of components using compressible fmuids - Part 3 : method for calculating steady-state flow-rate characteristics of systems
  • NF P18-452:2017 Bétons - Mesure du temps d'écoulement des bétons et des mortiers au maniabilimètre
  • NF EN 16345:2012 Bitumes et liants bitumineux - Mesure du temps d'écoulement des émulsions bitumineuses avec le Viscosimètre Redwood No. II
  • NF EN ISO 9785:2003 Navires et technologie maritime - Ventilation des espaces cargaison des navires dans lesquels des véhicules à moteur à combustion interne sont utilisés - Calcul du débit d'air total théorique exigé

German Institute for Standardization, How to use the flow meter

  • DIN EN ISO 20456:2020-09 Measurement of fluid flow in closed conduits - Guidance for the use of electromagnetic flowmeters for conductive liquids (ISO 20456:2017); German version EN ISO 20456:2019
  • DIN EN ISO 4490:2009 Metallic powders - Determination of flow rate by means of a calibrated funnel (Hall flowmeter) (ISO 4490:2008); English version of DIN EN ISO 4490:2009-02
  • DIN EN ISO 20456:2020 Measurement of fluid flow in closed conduits - Guidance for the use of electromagnetic flowmeters for conductive liquids (ISO 20456:2017)
  • DIN EN ISO 4490:2014 Metallic powders - Determination of flow rate by means of a calibrated funnel (Hall flowmeter) (ISO 4490:2014); German version EN ISO 4490:2014
  • DIN 53019-1:2008 Viscometry - Measurement of viscosities and flow curves by means of rotational viscometers - Part 1: Principles and measuring geometry
  • DIN 51562-3:1985-05 Viscometry; determination of kinematic viscosity using the Ubbelohde viscometer; viscosity relative increment at short flow times / Note: To be replaced by DIN 53000-4 (2019-04).

ES-UNE, How to use the flow meter

  • UNE-EN ISO 20456:2021 Measurement of fluid flow in closed conduits - Guidance for the use of electromagnetic flowmeters for conductive liquids (ISO 20456:2017)
  • UNE-EN ISO 18589-6:2021 Measurement of radioactivity in the environment - Soil - Part 6: Gross alpha and gross beta activities - Test method using gas-flow proportional counting (ISO 18589-6:2019) (Endorsed by Asociación Española de Normalización in September of 2021.)

European Committee for Standardization (CEN), How to use the flow meter

  • EN ISO 20456:2019 Measurement of fluid flow in closed conduits - Guidance for the use of electromagnetic flowmeters for conductive liquids (ISO 20456:2017)
  • EN ISO 4490:2014 Metallic powders - Determination of flow rate by means of a calibrated funnel (Hall flowmeter) (ISO 4490:2014)
  • EN ISO 4490:2018 Metallic powders - Determination of flow rate by means of a calibrated funnel (Hall flowmeter)
  • EN ISO 4490:2008 Metallic powders - Determination of flow rate by means of a calibrated funnel (Hall flowmeter)
  • EN 1934:1998 Thermal Performance of Buildings - Determination of Thermal Resistance by Hot Box Method Using Heat Flow Meter - Masonry
  • CEN/TR 15131:2006 Thermal performance of building materials - The use of interpolating equations in relation to thermal measurement on thick specimens - Guarded hot plate and heat flow meter apparatus
  • PD CEN/TR 15131:2006 Thermal performance of building materials The use of interpolating equations in relation to thermal measurement on thick specimens Guarded hot plate and heat flow meter apparatus

TR-TSE, How to use the flow meter

  • TS 3072-1978 Measurement Of Clean Water Flow In Closed Conduits - Velocity - Area Method Using Current - Meters

Standard Association of Australia (SAA), How to use the flow meter

  • AS 3778.3.1:2001 Measurement of water flow in open channels - Velocity-area methods - Measurement by current meters and floats
  • AS 3778.4.2:2022 Measurement of water flow in open channels, Part 4.2: Measurement using flow gauging structures — Rectangular broad-crested weirs (ISO 3846:2008, IDT)
  • AS 3778.4.10:2022 Measurement of water flow in open channels, Part 4.10: Measurement using flow gauging structures — End-depth method for estimation of flow in channels with a free overfall (ISO 18481:2017, IDT)
  • AS 3778.5.3:2022 Measurement of water flow in open channels, Part 5.3: Guidelines for the application of acoustic velocity meters using the Doppler and echo correlation methods (ISO 15769:2010, IDT)

未注明发布机构, How to use the flow meter

  • BS ISO TS 15768:2000 Measurement of liquid velocity in open channels - Design , selection and use of electromagnetic current meters
  • BS EN ISO 6817:1997(1999) Measurement of conductive liquid flow in closed conduits — Method using electromagnetic flowmeters

American Society for Testing and Materials (ASTM), How to use the flow meter

  • ASTM B213-11 Standard Test Methods for Flow Rate of Metal Powders Using the Hall Flowmeter Funnel
  • ASTM B213-13 Standard Test Methods for Flow Rate of Metal Powders Using the Hall Flowmeter Funnel
  • ASTM B855-11 Standard Test Method for Volumetric Flow Rate of Metal Powders Using the Arnold Meter and Hall Flowmeter Funnel
  • ASTM E2380/E2380M-15(2019) Standard Test Method for Measuring Pavement Texture Drainage Using an Outflow Meter
  • ASTM D3404-91(1998) Standard Guide for Measuring Matric Potential in the Vadose Zone Using Tensiometers
  • ASTM D3404-91(2013) Standard Guide for Measuring Matric Potential in Vadose Zone Using Tensiometers
  • ASTM D3404-15 Standard Guide for Measuring Matric Potential in Vadose Zone Using Tensiometers
  • ASTM B855-17 Standard Test Method for Volumetric Flow Rate of Metal Powders Using the Arnold Meter and Hall Flowmeter Funnel
  • ASTM C518-15 Standard Test Method for Steady-State Thermal Transmission Properties by Means of the Heat Flow Meter Apparatus
  • ASTM A927/A927M-11 Standard Test Method for Alternating-Current Magnetic Properties of Toroidal Core Specimens Using the Voltmeter-Ammeter-Wattmeter Method
  • ASTM B212-21 Standard Test Method for Apparent Density of Free-Flowing Metal Powders Using the Hall Flowmeter Funnel
  • ASTM B212-12 Standard Test Method for Apparent Density of Free-Flowing Metal Powders Using the Hall Flowmeter Funnel
  • ASTM B212-17 Standard Test Method for Apparent Density of Free-Flowing Metal Powders Using the Hall Flowmeter Funnel
  • ASTM B212-13 Standard Test Method for Apparent Density of Free-Flowing Metal Powders Using the Hall Flowmeter Funnel
  • ASTM C1784-14 Standard Test Method for Using a Heat Flow Meter Apparatus for Measuring Thermal Storage Properties of Phase Change Materials and Products
  • ASTM C1667-15 Standard Test Method for Using Heat Flow Meter Apparatus to Measure the Center-of-Panel Thermal Transmission Properties of Vacuum Insulation Panels
  • ASTM C1784-20 Standard Test Method for Using a Heat Flow Meter Apparatus for Measuring Thermal Storage Properties of Phase Change Materials and Products
  • ASTM D7605-11 Standard Test Method for Thermoplastic ElastomersMeasurement of Polymer Melt Rheological Properties and Congealed Dynamic Properties Using Rotorless Shear Rheometers

CEN - European Committee for Standardization, How to use the flow meter

  • EN ISO 4490:2001 Metallic Powders - Determination of Flow Time by Means of a Calibrated Funnel (Hall Flowmeter)

Lithuanian Standards Office , How to use the flow meter

  • LST EN ISO 748:2008 Hydrometry - Measurement of liquid flow in open channels using current-meters or floats (ISO 748:2007)
  • LST EN ISO 6817:2001 Measurement of conductive liquid flow in closed conduits - Methods using electromagnetic flow-meters (ISO 6817:1992)
  • LST EN ISO 18589-6:2021 Measurement of radioactivity in the environment - Soil - Part 6: Gross alpha and gross beta activities - Test method using gas-flow proportional counting (ISO 18589-6:2019)

AENOR, How to use the flow meter

  • UNE-EN ISO 748:2009 Hydrometry - Measurement of liquid flow in open channels using current-meters or floats (ISO 748:2007)
  • UNE-EN ISO 6817:1996 MEASUREMENT OF CONDUCTIVE LIQUID FLOW IN CLOSED CONDUITS. METHOD USING ELECTROMAGNETIC FLOWMETERS. (ISO 6817:1992).

American Petroleum Institute (API), How to use the flow meter

Japanese Industrial Standards Committee (JISC), How to use the flow meter

  • JIS B 8572-3:2011 Fuel oil flow meters -- Measuring instruments used in transaction or certification -- Part 3: Small amount fuel oil flow meters
  • JIS B 8572-4:2011 Fuel oil flow meters -- Measuring instruments used in transaction or certification -- Part 4: Stationary fuel oil flow meters
  • JIS B 8572-4:2014 Fuel oil flow meters.Measuring instruments used in transaction or certification.Part 4: Stationary fuel oil flow meters, fuel oil flow meters on road tankers, mobile type fuel oil flow meters
  • JIS B 6803:2015 Pressure regulators and pressure regulators with flow-metering devices for welding, cutting and allied processes
  • JIS B 8572-2:2011 Fuel oil flow meters -- Measuring instruments used in transaction or certification -- Part 2: Small size fuel oil flow meters on road tankers
  • JIS B 8572-1:2008 Fuel oil flow meters -- Measuring instruments used in transaction or certification -- Part 1: Fuel dispensers for motor vehicles

Korean Agency for Technology and Standards (KATS), How to use the flow meter

  • KS B ISO TR 12765:2005 Measurement of fluid flow in closed conduits-Methods using transit-time ultrasonic flowmeters
  • KS B ISO 10790-2003(2018) Measurement of fluid flow in closed conduits-Guidance to the selection, installation and use of Coriolis meters (mass flow, density and volume flow measurements)
  • KS B ISO 1088:2021 Hydrometry — Velocity-area methods using current-meters —Collection and processing of data for determination of uncertainties in flow measurement
  • KS B ISO 1088:2015 Liquid flow measurement in open channels-Velocity-area methods-Collection and processing of data for determination of errors in measurement
  • KS B ISO 10790:2003 Measurement of fluid flow in closed conduits-Guidance to the selection, installation and use of Coriolis meters (mass flow, density and volume flow measurements)
  • KS B ISO 1088:2005 Liquid flow measurement in open channels-Velocity-area methods-Collection and processing of data for determination of errors in measurement
  • KS B ISO TS 15768:2020 Measurement of liquid velocity in open channels —Design, selection and use of electromagnetic current meters

国家市场监督管理总局、中国国家标准化管理委员会, How to use the flow meter

  • GB/T 20728-2021 Measurement of fluid flow in closed conduits—Guidance to the selection, installation and use of Coriolis flowmeters
  • GB/T 14513.3-2020 Pneumatic fluid power—Determination of flow-rate characteristics of components using compressible fluids—Part 3:Method for calculating steady-state flow-rate characteristics of systems

API - American Petroleum Institute, How to use the flow meter

  • API MPMS 21.2-1998 Manual of Petroleum Measurement Standards Chapter 21-Flow Measurement Using Electronic Metering Systems - Section 2-Electronic Liquid Volume Measurement Using Positive Displacement and Turbine Meters (First Edition)
  • API MPMS 21.2 ADD-2000 Manual of Petroleum Measurement Standards Chapter 21-Flow Measurement Using Electronic Metering Systems Addendum to Section 2-Flow Measurement Using Electronic Metering Systems@ Inferred Mass (First Edition)
  • API RP 85 ADD-2013 Use of Subsea Wet-gas Flowmeters in Allocation Measurement Systems (First Edition)
  • API RP 85-2003 Use of Subsea Wet-gas Flowmeters in Allocation Measurement Systems (FIRST EDITION)
  • API H00008-2002 Measurement of Liquid Hydrocarbons by Ultrasonic Flowmeters Using Transit Time Technology (First Edition)
  • API MPMS 21.1-2013 Manual of Petroleum Measurement Standards Chapter 21.1 - Flow Measurement Using Electronic Metering Systems - Electronic Gas Measurement (Second Edition)
  • API MPMS 5.8-2005 Manual of Petroluem Measurement Standards Chapter 5 - Metering - Section 8 - Measurement of Liquid Hydrocarbons by Ultrasonic Flow Meters Using Transit Time Technology (First Edition)
  • API MPMS 5.8-2011 Manual of Petroluem Measurement Standards Chapter 5.8 Measurement of Liquid Hydrocarbons by Ultrasonic Flow Meters (SECOND EDITION; ERTA: February 2014)
  • API MPMS 21.1-1993 Manual of Petroleum Measurement Standards Chapter 21 - Flow Measurement Using Electronic Metering Systems Section 1 - Electronic Gas Measurement (First Edition)

BE-NBN, How to use the flow meter

IT-UNI, How to use the flow meter

  • UNI 6894-1971
  • UNI EN ISO 18589-6:2021 Measurement of radioactivity in the environment - Soil - Part 6: Gross alpha and gross beta activities - Test method using gas-flow proportional counting

PT-IPQ, How to use the flow meter

  • NP EN 1934-2000 Thermal performance of buildings Determination of thermal resistance by hot box method using heat flow meter Masonry

GOSTR, How to use the flow meter

  • GOST R 8.995-2020 State system for ensuring the uniformity of measurements. Volume flow rate and quantity of natural gas. Measurements procedure (method) using volumetric diaphragm and fluidics gas meters

RU-GOST R, How to use the flow meter

  • GOST R 57928-2017 Polymer composites. Method of determining the rate of heat release during combustion, using a flow calorimeter, operating on the principle of thermocouple

IETF - Internet Engineering Task Force, How to use the flow meter

  • RFC 6054-2010 Using Counter Modes with Encapsulating Security Payload (ESP) and Authentication Header (AH) to Protect Group Traffic

CH-SNV, How to use the flow meter

  • SN EN ISO 18589-6:2021 Measurement of radioactivity in the environment - Soil - Part 6: Gross alpha and gross beta activities - Test method using gas-flow proportional counting (ISO 18589-6:2019)




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