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How to measure the concentration of liquid

How to measure the concentration of liquid, Total:341 items.

In the international standard classification, How to measure the concentration of liquid involves: Nuclear energy engineering, Protection against fire, Measurement of volume, mass, density, viscosity, Water quality, Air quality, Welding, brazing and soldering, Analytical chemistry, Products of the chemical industry, Measurement of fluid flow, Radiation protection, Radiation measurements, Inorganic chemicals, Alarm and warning systems, Thermodynamics and temperature measurements, Vocabularies, CHEMICAL TECHNOLOGY, Fertilizers, Milk and milk products, Particle size analysis. Sieving, Metrology and measurement in general, Laboratory medicine, Equipment for petroleum and natural gas industries, Geology. Meteorology. Hydrology, Law. Administration, Food products in general, Prepackaged and prepared foods, Optoelectronics. Laser equipment, Paints and varnishes, Microbiology, Fluid power systems, Crude petroleum, Fuels, Metalliferous minerals, Beverages, Insulating fluids, Hydraulic fluids, Lubricants, industrial oils and related products, Linear and angular measurements, Paint ingredients, Natural gas, Petroleum products in general, Textile fibres, Materials for the reinforcement of composites, Glass, Semiconducting materials, Earthworks. Excavations. Foundation construction. Underground works.

Korean Agency for Technology and Standards (KATS), How to measure the concentration of liquid

KS A ISO 10980:2012 Validation of the strength of reference solutions used for measuring concentrations
KS A ISO 10980-2012(2017) Validation of the strength of reference solutions used for measuring concentrations
KS A ISO 10980-2012(2022) Validation of the strength of reference solutions used for measuring concentrations
KS I ISO 9698:2019 Water quality — Determination of tritium activity concentration — Liquid scintillation counting method
KS B 0546-2021 Methods of measurement for gas concentration in welding environment
KS A 0531-2016 Viscosity of liquid－Methods of measurement
KS I ISO 9698:2008 Water quality-Determination of tritium activity concentration-Liquid scintillation counting method
KS M 1071-10-2007 Guide for determination of the viscosity of liquids of chemical substances
KS M 3047-1993 Method for Measuring Smoke Density and Concentration of Gases Evolved by Incineration or Decomposition of Plastics
KS B ISO 4365:2022 Liquid flow in open channels — Sediment in streams and canals — Determination of concentration, particle size distribution and relative density
KS B ISO 8573-8-2005(2010) Compressed air－Part 8：Test methods for solid particle content by mass concentration
KS B ISO TR 7178-2003(2013) Liquid flow measurement in open channels－Velocity－area methods－Investigation of total error
KS B ISO 8573-8:2005 Compressed air-Part 8:Test methods for solid particle content by mass concentration
KS B ISO 8573-8:2013 Compressed air－Part 8：Test methods for solid particle content by mass concentration
KS M ISO 8310-2003(2008) Refrigerated light hydrocarbon fluids－Measurement of temperature in tanks containing liquefied gases－Resistance thermometers and thermocouples
KS A 0082-2008(2018) Low volume air samplers and methods for measuring mass concentration of airborne dust by the low volume air samplers
KS I ISO 13641-2:2010 Water quality-Determination of inhibition of gas production of anaerobic bacteria-Part 2:Test for low biomass concentrations
KS B ISO 13359-2014(2019) Measurement of conductive liquid flow in closed conduits — Flanged electromagnetic flowmeters — Overall length
KS P ISO 18153-2010(2016) In vitro diagnostic medical devices－Measurement of quantities in biological samples－Metrological traceability of values for catalytic concentration of enzymes assigned to calibrators and control mater
KS E ISO 15249:2011 Zinc sulfide concentrates－Determination of gold content－Acid dissolution/solvent extraction/flame atomic absorption spectrometric method
KS M ISO 2211-2003(2018)
KS B ISO 1768:2007 Glass hydrometers－Conventional value for the thermal cubic expansion coefficient(for use in the preparation of measurement tables for liquids)
KS P ISO 18153-2010(2021) In vitro diagnostic medical devices－Measurement of quantities in biological samples－Metrological traceability of values for catalytic concentration of enzymes assigned to calibrators and control mater
KS M ISO 4266-1-2003(2018)
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 1088:2005 Liquid flow measurement in open channels-Velocity-area methods-Collection and processing of data for determination of errors in measurement
KS P ISO 18153:2010 In vitro diagnostic medical devices-Measurement of quantities in biological samples-Metrological traceability of values for catalytic concentration of enzymes assigned to calibrators and control materials
KS M ISO 15169-2005(2020) Petroleum and liquid petroleum products - Determination of volume, density and mass of the hydrocarbon content of vertical cylindrical tanks by hybrid tank measurement systems
KS B ISO TS 15768:2020 Measurement of liquid velocity in open channels —Design, selection and use of electromagnetic current meters
KS M 2450-2007(2017) Test method for low－temperature viscosity of automotive fluid lubricants measured by brookfield viscometer
KS M ISO 15169:2005 Petroleum and liquid petroleum products - Determination of volume, density and mass of the hydrocarbon content of vertical cylindrical tanks by hybrid tank measurement systems
KS M ISO 4266-6-2003(2018)
KS M ISO 4266-3-2003(2018)
KS M ISO 4266-2-2003(2018)

International Organization for Standardization (ISO), How to measure the concentration of liquid

ISO 10980:1995 Validation of the strength of reference solutions used for measuring concentrations
ISO 9698:1989 Water quality; determination of tritium activity concentration; liquid scintillation counting method
ISO 748:2021 Hydrometry — Measurement of liquid flow in open channels — Velocity area methods using point velocity measurements
ISO 9698:2010 Water quality - Determination of tritium activity concentration - Liquid scintillation counting method
ISO 8299:1993 Determination of isotopic content and concentration of uranium and plutonium in nitric acid solution; mass spectrometric method
ISO 19747:2020 Fertilizers and soil conditioners — Determination of monosilicic acid concentrations in nonliquid fertilizer materials
ISO 1070:2018 Hydrometry — Slope-area method
ISO 8573-8:2004 Compressed air - Part 8: Test methods for solid particle content by mass concentration
ISO/CD TR 6037 Automated liquid handling systems – Uncertainty of the measurement procedures
ISO 13641-2:2003 Water quality - Determination of inhibition of gas production of anaerobic bacteria - Part 2: Test at low biomass concentrations
ISO 3966:2008 Measurement of fluid flow in closed conduits - Velocity area method using Pitot static tubes
ISO 1768:1975 Glass hydrometers; Conventional value for the thermal cubic expansion coefficient (for use in the preparation of measurement tables for liquids)
ISO 13359:1998 Measurement of conductive liquid flow in closed conduits - Flanged electromagnetic flowmeters - Overall length
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
ISO 1088:2007 Hydrometry - Velocity-area methods using current-meters - Collection and processing of data for determination of uncertainties in flow measurement
ISO 8130-16:2022 Coating powders — Part 16: Determination of density by liquid displacement in a measuring cylinder
ISO 18153:2003 In vitro diagnostic medical devices - Measurement of quantities in biological samples - Metrological traceability of values for catalytic concentration of enzymes assigned calibrators and control materials
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 15169:2003 Petroleum and liquid petroleum products - Determination of volume, density and mass of the hydrocarbon content of vertical cylindrical tanks by hybrid tank measurement systems

RO-ASRO, How to measure the concentration of liquid

STAS 1081-1980 LIQUID SOLUTIONS CONCENTRATION Glossary of terms and units of measure
STAS 8972/2-1981 Hydrometry LIQUID FLOOR MEASUREMENT IN OPEN CHANNELS Velocity-area methods
STAS 11071/9-1978 Legal metrology BLOCK DIAGRAM OF HIERARCHY OF MEASURING INSTRUMENTS FOR VISCOSITY OF NEWTONIAN LIQUIDS
STAS SR ISO 2211:1994 LIQUID CHEMICAL PRODUCTS - Measurement of colour in Hazen units (platinum-cobalt scale)

Standard Association of Australia （SAA）, How to measure the concentration of liquid

AS 4215.1:1995 Methods of test for determining fire extinguishing and inerting concentrations for flammable liquids and gases - Determination of fire extinguishing concentrations
AS 4215.2:1995 Methods of test for determining fire extinguishing and inerting concentrations for flammable liquids and gases - Determination of fire inerting concentrations
AS 4215.0:1995 Methods of test for determining fire extinguishing and inerting concentrations for flammable liquids and gases - General introduction and list of methods
AS 2300.2.11:1990 Methods of chemical and physical testing for the dairying industry - Liquid milks - Determination of density and estimation of solids-not-fat (SNF) - Hydrometer method

CEN - European Committee for Standardization, How to measure the concentration of liquid

EN ISO 9698:2019 Water quality - Tritium - Test method using liquid scintillation counting
EN ISO 11704:2018 Water quality - Gross alpha and gross beta activity - Test method using liquid scintillation counting
EN 16966:2018 Workplace exposure - Measurement of exposure by inhalation of nano-objects and their aggregates and agglomerates - Metrics to be used such as number concentration@ surface area concentration and mass concentration

RU-GOST R, How to measure the concentration of liquid

GOST 13005-1967 Interferometers for determination of liqnid and gas concentration. Methods and means for verification
GOST 28326.5-1989 Technical liquid ammonia. Determination of iron mass concentration by method of photocolorimetry
GOST 28326.3-1989 Technical liquid ammonia. Determination of oil mass concentration by method of infra-red spectrometry
GOST R ISO 8573-8-2007 Compressed air. Part 8. Test methods for solid particle content by mass concentration
GOST R 8.701-2010 State system for ensuring the uniformity of measuremenets. Liquid purity measuring instruments. Verification procedure
GOST 8.652-2016 State system for ensuring the uniformity of measurements. State verification schedule for instruments measuring mass concentration of dissolving in water gasses (oxygen, hydrogen)
GOST R 8.766-2011 State system for ensuring the uniformity of measurements. State verification schedule for instruments measuring mass concentration dissolving in water gasses (oxygen, hydrogen)
GOST 8.024-2002 State system for ensuring the uniformity of measurements. State verification schedule for means of measuring density
GOST 8.024-1975 State system for ensuring the uniformity of measurements. State primary standard and all-union verification schedule for means measuring density of liquid
GOST 15113.1-1977 Food concentrates. Methods for determination of packing quality, net and volume weight, separate components mass fraction, particle size of certain types of product and milling grade
GOST R 59740-2021 Optics and photonics. Semiconductor lasers for the determination of low concentrations of substances. Methods for measuring characteristics
GOST R 8.688-2009 State system for ensuring the uniformity of measurements. Density of petroleum. Requirements for methods of measurement by hydrometers during metering operations
GOST 8.025-1996 State system for ensuring the uniformity of measurements. State verification schedule for means measuring viscosity of liquids
GOST 8.025-1975 State system for ensuring the uniformity of measurements. State primary standard and all-union verification schedule for means measuring kinematic viscosity of liquid
GOST R 8.845-2013 State system for ensuring the uniformity of measurements. Air ion composition measurements. Method of measuring volume density of electric charge of air and air ion concentration using aspiration capacitor
GOST R 51427-1999 Citrus juices. Method for determination of hesperidin and naringin mass concentration using high performance liquid chromatography
GOST R 8.774-2011 State system for ensuring the uniformity of measurements. Disperse composition of liquid media. Determination of particle size by dynamic light scattering
GOST R ISO 10155-2006 Stationary source emissions. Automated monitoring of mass concentrations of solid particles. Performance characteristics, test methods and technical requirements
GOST ISO 18153-2011 In vitro diagnostic medical devices. Measurement of quantities in biological samples. Metrological traceability of assigned values for catalytic concentration of enzymes in calibrators and control materials
GOST 12.1.014-1984 Occupational safety standards sytem. Air in the zone of operation. Method of measuring unhealthy matters concentration using indicator tubes
GOST 8.636-2013 State system for ensuring the uniformity of measurements. Density of petroleum. Requirements to methods of measurement by hydrometers during metering operations
GOST 30351-2001 Polyamides, polyamide fibres, fabrics, films. Determination of mass fraction of residual caprolactam and low-molecular compounds and their concentration of migration in water. Methods of liquid and gas-liquid chromatography
GOST R 51822-2001 Wines and wine materials. Gas-chromatographic method for determination of volume fraction of ethanol and mass concentration of acetic and propionic acids
GOST 33410-2015 Non-alcoholic, low-alcoholic, wine and juice products. Determination of organic acids content by high performance liquid chromatography
GOST IEC 60754-3-2021 Test on gases evolved during combustion of materials from cables. Part 3. Measurement of low level of halogen content by ion chromatography
GOST R ISO 18153-2006 In vitro diagnostic medical devices. Measurement of quantities in biological samples. Metrological traceability of assigned values for catalytic concentration of enzymes in calibrators and control materials

European Committee for Standardization (CEN), How to measure the concentration of liquid

EN ISO 9698:2015 Water quality - Determination of tritium activity concentration - Liquid scintillation counting method
EN ISO 11704:2015 Water quality - Measurement of gross alpha and beta activity concentration in non-saline water - Liquid scintillation counting method (ISO 11704:2010)
EN ISO 8299:2021 Nuclear fuel technology - Determination of the isotopic and elemental uranium and plutonium concentrations of nuclear materials in nitric acid solutions by thermal-ionization mass spectrometry (ISO 8299:2019)
EN 12619:1999 Stationary Source Emissions - Determination of the Mass Concentration of Total Gaseous Organic Carbon at Low Concentrations in Flue Gases - Continuous Flame Ionization Detector Method
FprEN ISO 748:2021 Hydrometry - Measurement of liquid flow in open channels - Velocity area methods using point velocity measurements (ISO/FDIS 748:2021)
EN 45544-3:1999 Workplace Atmospheres - Electrical Apparatus Used for the Direct Detection and Direct Concentration Measurement of Toxic Gases and Vapours - Part 3: Performance Requirements for Apparatus Used for Measuring Concentrations Well Above Limit Values
EN 45544-3:2015 Workplace atmospheres - Electrical apparatus used for the direct detection and direct concentration measurement of toxic gases and vapours - Part 3: Performance requirements for apparatus used for general gas detection
PD CEN/TR 16469:2013 Hydrometry - Measurement of the rainfall intensity (liquid precipitation): requirements, calibration methods and field measurements
CEN/TR 16469:2013 Hydrometry - Measurement of the rainfall intensity (liquid precipitation): requirements, calibration methods and field measurements
EN ISO 16641:2016 Measurement of radioactivity in the environment - Air - Radon 220: Integrated measurement methods for the determination of the average activity concentration using passive solid-state nuclear track detectors
EN 13649:2001 Stationary Source Emissions - Determination of the Mass Concentration of Individual Gaseous Organic Compounds - Activated Carbon and Solvent Desorption Method
EN ISO 18153:2003 In vitro diagnostic medical devices - Measurement of quantities in biological samples - Metrological traceability of values for catalytic concentration of enzymes assigned to calibrators and control materials ISO 18153:2003

Danish Standards Foundation, How to measure the concentration of liquid

DS/ISO 9698:2011 Water quality - Determination of tritium activity concentration - Liquid scintillation counting method
DS/ISO 11704:2010 Water quality - Measurement of gross alpha and beta activity concentration in non-saline water - Liquid scintillation counting method
DS/EN 45544-3:2000 Workplace atmospheres - Electrical apparatus used for the direct detection and direct concentration measurement of toxic gases and vapours - Part 3: Performance requirements for apparatus used for measuring concentrations well above limit values
DS/EN 45544-2:2000 Workplace atmospheres - Electrical apparatus used for the direct detection and direct concentration measurement of toxic gases and vapours - Part 2: Performance requirements for apparatus used for measuring concentrations in the region of limit values
DS/EN 14412:2004 Indoor air quality - Diffusive samplers for the determination of concentrations of gases and vapours - Guide for selection, use and maintenance
DS/EN 13528-1:2003 Ambient air quality - Diffusive samplers for the determination of concentrations of gases and vapours - Requirements and test methods - Part 1: General requirements

VN-TCVN, How to measure the concentration of liquid

TCVN 6830-2016 Water quality - Determination of tritium activity concentration - Liquid scintillation counting method
TCVN 6830-2001 Water quality.Determination of tritium activity concentration.Liquid scintillation counting method
TCVN 6192-2010 Stationary source emmissions.Sampling for the automated determination of gas emission concentrations for permanently.installed monitoring systems
TCVN 7556-3-2005 Health care solid waste incinerators.Determination of the mass concentration of PCDD/PCDF.Part 3: Identification and quantification
TCVN 7556-1-2005 Health care solid waste incinerators.Determination of the mass concentration of PCDDs/PCDFs.Part 1: Sampling
TCVN 5754-1993 Work place air.Methods for determination of mass concentration of toxic gases and vapours.General sampling methods
TCVN 7556-2-2005 Health care solid waste incinerators.Determination of the mass concentration of PCDD/PCDF.Part 2: Extraction and clean-up

German Institute for Standardization, How to measure the concentration of liquid

DIN EN ISO 9698:2015-12 Water quality - Determination of tritium activity concentration - Liquid scintillation counting method (ISO 9698:2010); German version EN ISO 9698:2015 / Note: To be replaced by DIN EN ISO 9698 (2017-04).
DIN EN ISO 11704:2015-11 Water quality - Measurement of gross alpha and beta activity concentration in non-saline water - Liquid scintillation counting method (ISO 11704:2010); German version EN ISO 11704:2015 / Note: To be replaced by DIN EN ISO 11704 (2017-10).
DIN EN 16966:2019 Workplace exposure - Measurement of exposure by inhalation of nano-objects and their aggregates and agglomerates - Metrics to be used such as number concentration, surface area concentration and mass concentration
DIN EN 16966:2019-01 Workplace exposure - Measurement of exposure by inhalation of nano-objects and their aggregates and agglomerates - Metrics to be used such as number concentration, surface area concentration and mass concentration; German version EN 16966:2018
DIN EN ISO 748:2022-12 Hydrometry - Measurement of liquid flow in open channels - Velocity area methods using point velocity measurements (ISO 748:2021); German version EN ISO 748:2021
DIN 58932-2:1998-06 Haematology - Determination of the concentration of blood corpuscles in blood - Part 2: Characteristic quantities for erythrocytes (erythrocyte indices)
DIN 58932-1:2023-08 Haematology - Determination of the concentration of blood corpuscles in blood - Part 1: Blood collection, sample preparation, influence quantities, interference factors; Text in German and English
DIN EN ISO 748:2022 Hydrometry - Measurement of liquid flow in open channels - Velocity area methods using point velocity measurements (ISO 748:2021)
DIN 58932-2:1998 Haematology - Determination of the concentration of blood corpuscles in blood - Part 2: Characteristic quantities for erythrocytes (erythrocyte indices)
DIN EN ISO 748:2020 Hydrometry - Measurement of liquid flow in open channels - Velocity area methods using point velocity measurements (ISO/DIS 748:2020); German and English version prEN ISO 748:2020
DIN VDE 0405-4:2005 Determination of the breath alcohol concentration - Part 4: Testing of evidential breath analyzers by using calibration gas
DIN EN 45544-3:2000 Workplace atmospheres - Electrical apparatus used for the direct detection and direct concentration measurement of toxic gases and vapours - Part 3: Performance requirements for apparatus used for measuring concentrations well above limit values; German v
DIN CEN/TR 16469:2013-04*DIN SPEC 19669:2013-04 Hydrometry - Measurement of the rainfall intensity (liquid precipitation): requirements, calibration methods and field mesurements; German version CEN/TR 16469:2013
DIN EN 45544-2:2000 Workplace atmospheres - Electrical apparatus used for the direct detection and direct concentration measurement of toxic gases and vapours - Part 2: Performance requirements for apparatus used for measuring concentrations in the region of limit values; Ge
DIN 53177:2002-11 Binders for paints and varnishes - Measurement of the dynamic viscosity of liquid resins; Resin solutions and oils by the capillary viscosimeter of isocelses type according to Ubbelohde
DIN EN 14412:2004 Indoor air quality - Diffusive samplers for the determination of concentrations of gases and vapours - Guide for selection, use and maintenance; German version EN 14412:2004
DIN EN ISO 9698:2015 Water quality - Determination of tritium activity concentration - Liquid scintillation counting method (ISO 9698:2010); German version EN ISO 9698:2015
DIN 12803-2:2019-12 Laboratory glassware - Alcoholometry - Part 2: Alcoholometers for the alcoholic strength by volume
DIN ISO 13359:1998 Measurement of conductive liquid flow in closed conduits - Flanged-type electromagnetic flowmeters - Overall length (ISO 13359:1998)
DIN 51366:2013-12 Testing of mineral oil hydrocarbons - Measurement of kinematic viscosity by means of the Cannon-Fenske viscometer for opaque liquids
DIN 53165:2019-01 Testing of pigments and extenders - Determination of the relative scattering power of white pigments for different pigment volume concentrations (PVC) - Grey paste method
DIN CEN/TR 16469:2013 Hydrometry - Measurement of the rainfall intensity (liquid precipitation): requirements, calibration methods and field mesurements; German version CEN/TR 16469:2013
DIN 51797-4:1981 Testing of liquid fuels; determination of the sodium content; direct determination by atomic absorption spectroscopy
DIN EN 50676:2020 Electrical equipment used for detection and concentration measurement of refrigerant gases - Performance requirements and test methods; German version EN 50676:2019
DIN 51366:1977 Testing of mineral oil hydrocarbons; measurement of kinematic viscosity by means of the Cannon-Fenske viscometer, for opaque liquids
DIN 51859:1990 Testing of gaseous fuels and other gases; gravimetric determination of the content of condensate as a function of pressure and temperature
DIN EN 13528-2:2002-12 Ambient air quality - Diffusive samplers for the determination of concentrations of gases and vapours; Requirements and test methods - Part 2: Specific requirements and test methods; German version EN 13528-2:2002
DIN EN ISO 18153:2003-11 In vitro diagnostic medical devices - Measurement of quantities in biological samples - Metrological traceability of values for catalytic concentration of enzymes assigned to calibrators and control materials (ISO 18153:2003); German version EN ISO 181...
DIN 58906-1:2000-03 Haemostaseology - Determination of fibrinogen concentration - Part 1: Reference measurement procedure for the determination of clottable fibrinogen as described by Clauss
DIN EN 14412:2004-12 Indoor air quality - Diffusive samplers for the determination of concentrations of gases and vapours - Guide for selection, use and maintenance; German version EN 14412:2004
DIN 51366:2013 Testing of mineral oil hydrocarbons - Measurement of kinematic viscosity by means of the Cannon-Fenske viscometer for opaque liquids
DIN EN ISO 18153:2003 In vitro diagnostic medical devices - Measurement of quantities in biological samples - Metrological traceability of values for catalytic concentration of enzymes assigned to calibrators and control materials (ISO 18153:2003)
DIN 50451-6:2014 Testing of materials for semiconductor technology - Determination of traces of elements in liquids - Part 6: Determination of 36 elements in a high-purity ammonium fluoride solution (NH4F) and in etching mixtures of high-purity ammonium fluoride solution
DIN EN 13528-3:2004-04 Ambient air quality - Diffusive samplers for the determination of concentrations of gases and vapours - Part 3: Guide to selection, use and maintenance; German version EN 13528-3:2003
DIN EN 13528-1:2002-12 Ambient air quality - Diffusive samplers for the determination of concentrations of gases and vapours; Requirements and test methods - Part 1: General requirements; German version EN 13528-1:2002

Association of German Mechanical Engineers, How to measure the concentration of liquid

VDI 3486 Blatt 2-1979 Measurement of gaseous emission; Measurement of the hydrogen sulfide concentration; lodometric titration method
VDI 3487 Blatt 1-1978 Gaseous emission measurement; measurement of carbon disulfide concentration; iodometric titration method
VDI 3486 Blatt 1-1979 Measurement of gaseous emissions; Measurement of the hydrogen sulfide concentration; potentiometric titration method
VDI 2462 Blatt 1-1974 Gaseous emission measurement; determination of sulphur dioxide concentration; iodometric thiosulfate method
VDI 2453 Blatt 3-1995 Gaseous air pollution measurement - Determination of the nitrogen monoxide and nitrogen dioxide concentration - Preparation of the calibration gas mixtures and determination of their concentration
VDI 2451 Blatt 3-1996 Measurement of gaseous immissions - Measurement of sulphur dioxide concentration - Tetrachloromercurate Pararosaniline (TCM) Method
VDI 3481 Blatt 4-2007 Gaseous emission measurement - Measurement of the concentrations of total organic carbon and methane carbon using the flame ionisation detector (FID)

British Standards Institution (BSI), How to measure the concentration of liquid

BS ISO 9698:2010 Water quality. Determination of tritium activity concentration. Liquid scintillation counting method
BS EN 16966:2018 Workplace exposure. Measurement of exposure by inhalation of nano-objects and their aggregates and agglomerates. Metrics to be used such as number concentration, surface area concentration and mass concentration
BS ISO 8573-8:2004 Compressed air - Test methods for solid particle content by mass concentration
BS ISO 19747:2020 Fertilizers and soil conditioners. Determination of monosilicic acid concentrations in nonliquid fertilizer materials
18/30303624 DC BS ISO 19747. Fertilizers and soil conditioners. Determination of monosilicic acid concentrations in nonliquid fertilizer materials
20/30402136 DC BS ISO 19747. Fertilizers and soil conditioners. Determination of monosilicic acid concentrations in nonliquid fertilizer materials
BS ISO 13641-2:2003 Water quality. Determination of inhibition of gas production of anaerobic bacteria. Test for low biomass concentrations
20/30358619 DC BS EN ISO 748. Hydrometry. Measurement of liquid flow in open channels. Velocity area methods using point velocity measurements
BS ISO 4266-4:2023 Petroleum and liquid petroleum products. Measurement of level and temperature in storage tanks by automatic methods - Measurement of temperature in atmospheric tanks
BS EN 50676:2019 Electrical equipment used for detection and concentration measurement of refrigerant gases. Performance requirements and test methods
BS ISO 10396:2007 Stationary source emissions - Sampling for the automated determination of gas emission concentrations for permanently-installed monitoring systems
BS ISO 18481:2017 Hydrometry. Liquid flow measurement using end depth method in channels with a free overfall
BS ISO 8130-16:2022 Coating powders - Determination of density by liquid displacement in a measuring cylinder
BS EN ISO 8130-16:2023 Coating powders - Determination of density by liquid displacement in a measuring cylinder
BS EN ISO 18153:2003 In vitro diagnostic medical devices - Measurement of quantities in biological samples - Metrological traceability of values for catalytic concentration of enzymes assigned to calibrators and control materials
BS ISO 4266-1:2023 Petroleum and liquid petroleum products. Measurement of level and temperature in storage tanks by automatic methods - Measurement of level in atmospheric tanks
BS ISO 3966:2008 Measurement of fluid flow in closed conduits - Velocity area method using Pitot static tubes
BS EN 62021-1:2003 Insulating liquids - Determination of acidity - Automatic potentiometric titration
BS 1041-2.1:1985 Code for temperature measurement - Expansion thermometers - Guide to selection and use of liquid-in-glass thermometers
19/30392191 DC BS EN 50676. Electrical equipment used for detection and concentration measurement of refrigerant gases or SF6 Performance requirements and test methods.
18/30356945 DC BS EN 50676. Electrical equipment used for detection and concentration measurement of refrigerant gases or SF6. Performance requirements and test methods
BS ISO 1088:2007 Hydrometry. Velocity-area methods using current-meters. Collection and processing of data for determination of uncertainties in flow measurement
BS EN 237:2004 Methods of test for petroleum and its products. BS 2000-428: Liquid petroleum products. Petrol. Determination of low lead concentrations by atomic absorption spectrometry
BS EN 45544-2:2015 Tracked Changes. Workplace atmospheres. Electrical apparatus used for the direct detection and direct concentration measurement of toxic gases and vapours. Performance requirements for apparatus used for exposure measurement
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 EN 13528-1:2002 Ambient air quality - Diffusive samplers for the determination of concentrations of gases and vapours - Requirements and test methods - General requirements
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 1041 Sec.2.1:1985 Temperature measurement. Expansion thermometers. Guide to selection and use of liquid-in-glass thermometers
BS EN 45544-3:2015 Tracked Changes. Workplace atmospheres. Electrical apparatus used for the direct detection and direct concentration measurement of toxic gases and vapours. Performance requirements for apparatus used for general gas detection
BS 734C:1962 Measurement of the density of milk using a hydrometer - Percentage of total solids and non-fatty solids in milk corresponding to given fat content and observed density fat content range 2-6 per cent (with fat in the liquid state)
BS EN 45544-1:2015 Tracked Changes. Workplace atmospheres. Electrical apparatus used for the direct detection and direct concentration measurement of toxic gases and vapours. General requirements and test methods

KR-KS, How to measure the concentration of liquid

KS I ISO 9698-2019 Water quality — Determination of tritium activity concentration — Liquid scintillation counting method
KS B ISO 4365-2022 Liquid flow in open channels — Sediment in streams and canals — Determination of concentration, particle size distribution and relative density
KS A 0095-2007(2022) Determination of particle size distribution by the weight of sedimentation in liquid
KS M ISO 4266-4-2003(2023)
KS M ISO 4266-5-2003(2023)
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 M ISO 4266-2-2003(2023)
KS M ISO 4266-6-2003(2023)
KS M ISO 4266-1-2003(2023)
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 M ISO 4266-3-2003(2023)
KS B ISO TS 15768-2020 Measurement of liquid velocity in open channels —Design, selection and use of electromagnetic current meters
KS M 2450-2007(2017)(英文版) Test method for low－temperature viscosity of automotive fluid lubricants measured by brookfield viscometer

ET-QSAE, How to measure the concentration of liquid

ES 402-2000

Japanese Industrial Standards Committee (JISC), How to measure the concentration of liquid

JIS Z 3952:2005 Methods of measurement for gas concentration in welding environment
JIS Z 8804:2012 Methods of measuring density and specific gravity of liquid
JIS Z 8705:1992 Method of temperature measurement by liquid-in-glass thermometers
JIS B 8392-8:2008 Compressed air -- Part 8: Test methods for solid particle content by mass concentration

Association Francaise de Normalisation, How to measure the concentration of liquid

NF EN 15216:2021 Matrices environnementales solides - Détermination de la concentration en matières solides dissoutes totales (TDS) de l'eau et des éluats
NF M60-817:2011 Water quality - Determination of tritium activity concentration - Liquid scintillation counting method.
NF X43-602*NF EN 16966:2018 Workplace exposure - Measurement of exposure by inhalation of nano-objects and their aggregates and agglomerates - Metrics to be used such as number concentration, surface area concentration and mass concentration
NF EN 16966:2018 Exposition sur les lieux de travail - Mesurage de l'exposition par inhalation de nano-objets et de leurs agrégats et agglomérats - Métriques à utiliser telles que concentration en nombre, concentration en surface et concentration en masse
NF M60-820:2010 Water quality - Measurement of gross alpha and beta activity concentration in non-saline water - Liquid scintillation counting method.
NF M60-805-3:2005 Nuclear energy - Measurement of radioactivity in the environment - Water - Part 3 : measurement of the concentration of uranium in water by alpha liquid scintillation.
NF X10-331:1992 Liquid flow measurement in open channels. Slope-area method.
NF X10-301*NF EN ISO 748:2021 Hydrometry - Measurement of liquid flow in open channels - Velocity area methods using point velocity measurements
NF M60-312:1999 Nuclear energy. Measurement of environmental radioactivity-Air. Determination by liquid scintillation of the activity concentration of atmospheric tritium sampled by the sparging technique (air through water).
NF T20-251:1968 CHEMICAL ANALYSIS OF HYDROCHLORIC,NITRIC AND SULPHURIC ACIDS. ESTIMATE OF APPROXIMATE STRENGTH BY DENSITY MEASUREMENT.
NF ISO 8573-8:2004 Air comprimé - Partie 8 : méthodes d'essai pour la détermination de la teneur en particules solides par concentration massique
NF X43-017:1984 Air quality. Measurement of the concentration of solid particles in ambient air. Beta ray absorption method.
NF T20-050:1985 Chemical products for industrial use. Determination of density of liquids. Aerometric method.
NF X10-309:1986 Liquid flow measurement in open channels. Velocity area methods. Collecting and processing of data for determination of errors measurement.
NF EN 50676:2019 Appareils électriques utilisés pour la détection et la mesure de la concentration de gaz frigorigènes - Exigences de performance et méthodes d'essai
NF X43-063*NF EN 14412:2004 Indoor air quality - Diffusive samplers for the determination of concentration of gases and vapours - Guide for selection, use and maintenance
NF E48-041:1995 Hydraulic fluid power. Multiple lip packing sets. Methods for measuring stock heights.
NF EN ISO 16641:2016 Mesurage de la radioactivité dans l'environnement - Air - Radon 220 : méthode de mesure intégrée pour la détermination de l'activité volumique moyenne avec des détecteurs passifs solides de traces nucléaires
NF M08-016:1992 Petroleum and liquid petroleum products. Determination of density for metrological purposes. Oscillation frequence method.
NF X10-112:1977 Measurement of fluid flow in closed conduites.velocity area method using pitot static tubes.
NF X10-113:1982 Determination of flowrate of fluids in closed conduits of circular cross-section. Method of velocity measurement at one point of the cross-section.
NF C27-261*NF EN 62021-1:2004 Insulating liquids - Determination of acidity - Part 1 : automatic potentiometric titration
NF M07-038:1968 Liquid fuels. Determination of the sodium content in petroleum products (flame photometry method).
NF T60-152:1979 Produits pétroliers - Mesure de la viscosité à basse température au moyen du viscosimètre Brookfield - Méthode à bain liquide.
NF M60-805-2:2003 Nuclear energy - Measurement of radioactivity in the environment - Water - Part 2 : measurement of the concentration of uranium in water by inductively coupled plasma atomic emission spectroscopy.
NF E48-392-2*NF ISO 15086-2:2001 Hydraulic fluid power - Determination of the fluid-borne noise characteristics of components and systems - Part 2 : measurement of the speed of sound in a fluid in a pipe
NF X43-029-5*NF EN 14662-5:2005 Ambient air quality - Standard method for measurement of benzene concentrations - Part 5 : diffusive sampling followed by solvent desorption and gas chromatography.
NF EN ISO 8299:2021 Technologie du combustible nucléaire - Détermination de la teneur isotopique et de la concentration d'uranium et du plutonium dans les matières nucléaires en solution d'acide nitrique par spectrométrie de masse à thermo-ionisation
NF EN 16476:2014 Produits pétroliers liquides - Détermination des concentrations en sodium, potassium, calcium, phosphore, cuivre et zinc dans le gazole - Méthode par spectrométrie d'émission atomique par plasma à couplage inductif (ICP OES)
NF EN 14412:2004 Qualité de l'air intérieur - Échantillonnage par diffusion pour la détermination de la concentration des gaz et des vapeurs - Guide pour la sélection, l'utilisation et la maintenance
NF P84-706:2019 Géosynthétiques bentonitiques - Détermination du flux liquide par unité de longueur de recouvrement
NF EN 13528-2:2003 Qualité de l'air ambiant - Échantillonneurs par diffusion pour la détermination des concentrations des gaz et des vapeurs - Exigences et méthodes d'essai - Partie 2 : exigences spécifiques et méthodes d'essai
NF EN ISO 18153:2004 Dispositifs médicaux de diagnostic in vitro - Mesurage des grandeurs dans des échantillons d'origine biologique - Traçabilité métrologique des valeurs de concentration catalytique des enzymes attribuées aux agents d'étalonnage et aux matériau...
NF S92-022*NF EN ISO 18153:2004 In vitro diagnostic medical devices - Measurement of quantities in biological samples - Metrological traceability of values for catalytic concentration of enzymes assigned to calibrators and control materials.
NF M08-025*NF ISO 15169:2004 Petroleum and liquid petroleum products - Determination of volume, density and mass of the hydrocarbon content of vertical cylindrical tanks by hybrid tank measurement systems.
NF EN 13528-1:2003 Qualité de l'air - Echantillonneurs par diffusion pour la détermination des concentrations des gaz et des vapeurs - Prescriptions et méthodes d'essai - Partie 1: prescriptions générales
NF P94-057:1992 Soils investingation and testing. Granulometric analysis. Hydrometer method.
NF X43-246-2*NF EN 45544-2:2015 Workplace atmospheres - Electrical apparatus used for the direct detection and direct concentration measurement of toxic gases and vapours - Part 2 : performance requirements for apparatus used for exposure measurement
FD X43-131:2005 Stationary source emissions - Pratical guidance for estimating the incertainty in measurement of pollutant concentrations - Part 1 : General - Part 2 : Automatic measurement - Part 3 : Dust measurement - Part 4 : Manual measurement of a particulate gaseou

Lithuanian Standards Office , How to measure the concentration of liquid

LST ISO 9698:2011 Water quality - Determination of tritium activity concentration - Liquid scintillation counting method (ISO 9698:2010, identical)
LST EN 45544-3-2001 Workplace atmospheres - Electrical apparatus used for the direct detection and direct concentration measurement of toxic gases and vapours - Part 3: Performance requirements for apparatus used for measuring concentrations well above limit values
LST EN 45544-2-2001 Workplace atmospheres - Electrical apparatus used for the direct detection and direct concentration measurement of toxic gases and vapours - Part 2: Performance requirements for apparatus used for measuring concentrations in the region of limit values
LST ISO 4266-4:2003 Petroleum and liquid petroleum products. Measurement of level and temperature in storage tanks by automatic methods. Part 4: Measurement of temperature in atmospheric tanks (idt ISO 4266-4:2002)
LST ISO 4266-5:2003 Petroleum and liquid petroleum products. Measurement of level and temperature in storage tanks by automatic methods. Part 5: Measurement of temperature in marine vessels (idt ISO 4266-5:2002)
LST ISO 4266-1:2003 Petroleum and liquid petroleum products. Measurement of level and temperature in storage tanks by automatic methods. Part 1: Measurement of level in atmospheric tanks (idt ISO 4266-1:2002)
LST ISO 4266-2:2003 Petroleum and liquid petroleum products. Measurement of level and temperature in storage tanks by automatic methods. Part 2: Measurement of level in marine vessels (idt ISO 4266-2:2002)
LST ISO 4266-6:2003 Petroleum and liquid petroleum products. Measurement of level and temperature in storage tanks by automatic methods. Part 6: Measurement of temperature in pressurized storage tanks (non- refrigerated) (idt ISO 4266-6:2002)
LST EN 14412-2004 Indoor air quality - Diffusive samplers for the determination of concentrations of gases and vapours - Guide for selection, use and maintenance
LST ISO 4266-3:2003 Petroleum and liquid petroleum products. Measurement of level and temperature in storage tanks by automatic methods. Part 3: Measurement of level in pressurized storage tanks (non-refrigerated) (idt ISO 4266-3:2002)
LST EN ISO 18153:2004 In vitro diagnostic medical devices - Measurement of quantities in biological samples - Metrological traceability of values for catalytic concentration of enzymes assigned to calibrators and control materials (ISO 18153:2003)
LST EN 13528-1-2003 Ambient air quality - Diffusive samplers for the determination of concentrations of gases and vapours - Requirements and test methods - Part 1: General requirements

Natural Gas Processor's Association (NGPA), How to measure the concentration of liquid

GPA RR-147-1995 Density Measurements on Natural Gas Liquids
GPA RR-62-1982 Water-Hydrocarbon Liquid-Liquid-Vapor Equilibrium Measurements to 530 Degrees F
GPA RR-93-1986 Gas Solubilities and Vapor-Liquid Equilibrium Measurements of H2, CO2 and NH3 in Water-Phenol Mixtures from 110 Degrees F to 550 Degrees F
GPA STD 2188-1989 Tentative Method for the Determination of Ethyl Mercaptan in Lp-Gas Using Length of Stain Tubes

ES-UNE, How to measure the concentration of liquid

UNE-EN 16966:2022 Workplace exposure - Measurement of exposure by inhalation of nano-objects and their aggregates and agglomerates - Metrics to be used such as number concentration, surface area concentration and mass concentration
UNE-EN ISO 748:2023 Hydrometry - Measurement of liquid flow in open channels - Velocity area methods using point velocity measurements (ISO 748:2021)
UNE-EN 50676:2019 Electrical equipment used for detection and concentration measurement of refrigerant gases - Performance requirements and test methods (Endorsed by Asociación Española de Normalización in February of 2020.)
UNE-EN 45544-2:2015 Workplace atmospheres - Electrical apparatus used for the direct detection and direct concentration measurement of toxic gases and vapours - Part 2: Performance requirements for apparatus used for exposure measurement (Endorsed by AENOR in March of 2015.)
UNE-EN 45544-3:2015 Workplace atmospheres - Electrical apparatus used for the direct detection and direct concentration measurement of toxic gases and vapours - Part 3: Performance requirements for apparatus used for general gas detection (Endorsed by AENOR in March of 20...

VDI - Verein Deutscher Ingenieure, How to measure the concentration of liquid

VDI 2465 BLATT 1-1971 AUSWERTEN VON STAUBKONZENTRATIONSMESSUNGEN IN STROEMENDEN GASEN; KONTINUIERLICHE PROZESSE

AT-ON, How to measure the concentration of liquid

ONORM M 5861-1-1993 Manual determination of particle concentrations in fluid gases - Gravimetrie method - General requirements
ONORM M 5861-2-1994 Manual determination of particle concentrations in fluid gases - Gravimetrie method - Special requirements regarding measurement techniques

American Society for Testing and Materials (ASTM), How to measure the concentration of liquid

ASTM D4599-20 Standard Practice for Measuring the Concentration of Toxic Gases or Vapors Using Length-of-Stain Dosimeters
ASTM D4599-21 Standard Practice for Measuring the Concentration of Toxic Gases or Vapors Using Length-of-Stain Dosimeters
ASTM D7042-10 Standard Test Method for Dynamic Viscosity and Density of Liquids by Stabinger Viscometer (and the Calculation of Kinematic Viscosity)
ASTM D4490-96 Standard Practice for Measuring the Concentration of Toxic Gases or Vapors Using Detector Tubes
ASTM D4599-97 Standard Practice for Measuring the Concentration of Toxic Gases or Vapors Using Length-of-Stain Dosimeters
ASTM D459-08 Standard Terminology Relating to Soaps and Other Detergents
ASTM D459-08a Standard Terminology Relating to Soaps and Other Detergents
ASTM D1122-13 Standard Test Method for Density or Relative Density of Engine Coolant Concentrates and Engine Coolants By The Hydrometer
ASTM D4490-96(2006)e1 Standard Practice for Measuring the Concentration of Toxic Gases or Vapors Using Detector Tubes
ASTM C1343-96(2007) Standard Test Method for Determination of Low Concentrations of Uranium in Oils and Organic Liquids by X-ray Fluorescence
ASTM D7042-16e1 Standard Test Method for Dynamic Viscosity and Density of Liquids by Stabinger Viscometer (and the Calculation of Kinematic Viscosity)
ASTM D7042-12 Standard Test Method for Dynamic Viscosity and Density of Liquids by Stabinger Viscometer (and the Calculation of Kinematic Viscosity)
ASTM D4599-03 Standard Practice for Measuring the Concentration of Toxic Gases or Vapors Using Length-of-Stain Dosimeters
ASTM D4599-14 Standard Practice for Measuring the Concentration of Toxic Gases or Vapors Using Length-of-Stain Dosimeters
ASTM D4599-03(2009)e1 Standard Practice for Measuring the Concentration of Toxic Gases or Vapors Using Length-of-Stain Dosimeters
ASTM E344-12 Terminology Relating to Thermometry and Hydrometry
ASTM D1122-97a(2002) Standard Test Method for Density or Relative Density of Engine Coolant Concentrates and Engine Coolants By The Hydrometer
ASTM D1122-97a Standard Test Method for Density or Relative Density of Engine Coolant Concentrates and Engine Coolants By The Hydrometer
ASTM D1122-08 Standard Test Method for Density or Relative Density of Engine Coolant Concentrates and Engine Coolants By The Hydrometer
ASTM D1122-22 Standard Test Method for Relative Density of Engine Coolant Concentrates and Engine Coolants By The Hydrometer
ASTM F398-92(1997) Standard Test Method for Majority Carrier Concentration in Semiconductors by Measurement of Wavenumber or Wavelength of the Plasma Resonance Minimum
ASTM D5062-96 Standard Test Method for Resin Solution Dilutability by Volumetric/Gravimetric Determination
ASTM D5062-09(2017) Standard Test Method for Resin Solution Dilutability by Volumetric/Gravimetric Determination
ASTM D5062-09(2020) Standard Test Method for Resin Solution Dilutability by Volumetric/Gravimetric Determination
ASTM D7867-13(2020) Standard Test Methods for Measurement of the Rotational Viscosity of Paints, Inks and Related Liquid Materials as a Function of Temperature
ASTM E2323-04 Standard Test Method for Calculating the Concentration of Fill Gas in a Sealed Insulating Glass Unit Using Measurements From an Oxygen Analyzer

American National Standards Institute （ANSI), How to measure the concentration of liquid

ANSI/ASME MFC-2M-1983 Measurement Uncertainty for Fluid Flow in Closed Conduits
ANSI/ASTM D1122:1998 Test Method for Density or Relative Density of Engine Coolant Concentrates and Engine Coolants by the Hydrometer
BS EN ISO 748:2021 Tracked Changes. Hydrometry. Measurement of liquid flow in open channels. Velocity area methods using point velocity measurements (British Standard)

未注明发布机构, How to measure the concentration of liquid

ASME MFC-2M-1983 Uncertainty in liquid flow measurements in sealed pipes
BS ISO 13359:1998(1999) Measurement of conductive liquid flow in closed conduits — Flanged electromagnetic flowmeters — Overall length
BS 1041-2.1:1985(2007) Temperature measurement — Part 2 : Expansion thermometers — Section 2.1 Guide to selection and use of liquid - in - glass thermometers

BE-NBN, How to measure the concentration of liquid

NBN T 04-305-1983 Urea for industrial use - Measurement of the pH of a solution of urea of conventional concentration (100 g/1) - Potentiometric method

HU-MSZT, How to measure the concentration of liquid

BELST, How to measure the concentration of liquid

STB GOST R 51427-2006 Citrus juices. Method for determination of hesperidin and naringin mass concentration using high performance liquid chromatography
STB 17.13.05-37-2015 Environmental protection and nature use. Analytical (laboratory) control and monitoring. Atmospheric air. Determination of sulphate-ion concentration in liquid matrix

European Committee for Electrotechnical Standardization（CENELEC）, How to measure the concentration of liquid

EN 45544-2:1999 Workplace Atmospheres - Electrical Apparatus Used for the Direct Detection and Direct Concentration Measurement of Toxic Gases and Vapours - Part 2:Performance Requirements for Apparatus Used for Measuring Concentrations in the Region of Limit Values
EN 45544-2:2015 Workplace atmospheres - Electrical apparatus used for the direct detection and direct concentration measurement of toxic gases and vapours - Part 2: Performance requirements for apparatus used for exposure measurement

ES-AENOR, How to measure the concentration of liquid

UNE 80-263-1987

AR-IRAM, How to measure the concentration of liquid

IRAM 6505-1950

国家市场监督管理总局、中国国家标准化管理委员会, How to measure the concentration of liquid

GB/T 21451.5-2019 Petroleum and liquid petroleum products—Measurement of level and temperature in storage tanks by automatic methods—Part 5: Measurement of temperature in marine vessels
GB/T 21451.2-2019 Petroleum and liquid petroleum products—Measurement of level and temperature in storage tanks by automatic methods—Part 2:Measurement of level in marine vessels

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China, How to measure the concentration of liquid

GB/T 21451.4-2008 Petroleum and liquid petroleum products.Measurement of level and temperature in storage tanks by automatic methods.Part 4:Measurement of temperature in atmospheric tanks
GB/T 21451.1-2015 Petroleum and liquid petroleum products.Measurement of level and temperature in storage tanks by automatic methods.Part 1:Measurement of level in atmospheric tanks
GB/T 8570.7-1988 Liquefied anhydrous ammonia--Determination of iron content--o-Phenanthroline spectrophotometric method
GB/T 20729-2006 Measurement of conductive liquid flow in closed conduits Flanged electromagnetic flowmeters Overall length
GB/T 24959-2010 Refrigerated light hydrocarbon fluids.Measurement of temperature in tanks containing liquefied gases.Resistance thermometers and thermocouples
GB/T 17746-1999 Petroleum liquids and gases--Fidelity and security of dynamic measurement--Cabled transmission of electric and/or electronic pulsed data
GB/T 25964-2010 Petroleum and liquid petroleum products.Determination of volume,density and mass of the hydrocarbon content of vertical cylindrical tanks by hybrid tank measurement systems

The American Road & Transportation Builders Association, How to measure the concentration of liquid

AASHTO T 295-2008 Standard Method of Test for Specific Gravity or API Gravity of Liquid Asphalts by Hydrometer Method

AENOR, How to measure the concentration of liquid

UNE-ISO 8310:2005 Refrigerated light hydrocarbon fluids -- Measurement of temperature in tanks containing liquefied gases -- Resistance thermometers and thermocouples
UNE-EN 14412:2005 Indoor air quality - Diffusive samplers for the determination of concentrations of gases and vapours - Guide for selection, use and maintenance
UNE-EN ISO 18153:2004 In vitro diagnostic medical devices - Measurement of quantities in biological samples - Metrological traceability of values for catalytic concentration of enzymes assigned to calibrators and control materials (ISO 18153:2003)
UNE-EN 13528-1:2003 Ambient air quality - Diffusive samplers for the determination of concentrations of gases and vapours - Requirements and test methods - Part 1: General requirements

NL-NEN, How to measure the concentration of liquid

NEN 2931-1993 Air quality. Workplace atmosphere. Determination of the concentration of vinylchloride by active sorbent tube sampling, liquid desorption and gas chromatography
NVN 2824-1994 Air quality.Ambient air.Determination of the concentration of nitric acid,hydrochloric acid,ammonia and sulphur dioxide as gases.Rotating denuder method

CENELEC - European Committee for Electrotechnical Standardization, How to measure the concentration of liquid

PREN 50676-2019 Electrical equipment used for detection and concentration measurement of refrigerant gases or SF6 Performance requirements and test methods
PREN 50676-2018 Electrical equipment used for detection and concentration measurement of refrigerant gases or SF6 Performance requirements and test methods

International Electrotechnical Commission (IEC), How to measure the concentration of liquid

IEC 62021-1:2003 Insulating liquids - Determination of acidity - Part 1: Automatic potentiometric titration

PT-IPQ, How to measure the concentration of liquid

NP 1695-1980

TR-TSE, How to measure the concentration of liquid

TS 3417-1979 MEASUREMENT OP FLUID PLOW IN CLOSED CONDUITS - VELOCITY AREA METHOD USING PITOT STATIC TUBES

Professional Standard - Agriculture, How to measure the concentration of liquid

GB 8570.7-1988 Determination of the content of liquid anhydrous ammonium ferric o-phenanthroline spectrophotometric method

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, How to measure the concentration of liquid

GB/T 21451.6-2017 Petroleum and liquid petroleum products—Measurement of level and temperature in storage tanks by automatic methods—Part 6: Measurement of temperature in pressurized storage tanks (non-refrigerated)
GB/T 21451.3-2017 Petroleum and liquid petroleum products—Measurement of level and temperture in storage tanks by automatic methods—Part 3:Measurement of level in pressurized tanks(non-refrigerated)

NO-SN, How to measure the concentration of liquid

NS 4859-1983 Air quality - Emission measurement - Manual determination of concentration of sulphur trioxide/sulphuric acid and sulphur dioxide in dustladen gases - Isopropanol method

GOSTR, How to measure the concentration of liquid

GOST R 54760-2011 Мilk products and infant milk products. Method for determination of mass concentration of mono- and disugar using high performance liquid chromatography
GOST R 8.988-2020 State system for ensuring the uniformity of measurements. Standard reference data. The density and thermal expansion of liquid lithium-lead alloys in the temperature range from the liquidus line to 1050 K and in the concentration range from 10 at. % to 84

Professional Standard - Medicine, How to measure the concentration of liquid

YY/T 0638-2008 In vitro diagnostic medical devices.Measurement of quantities in biological samples.Metrological traceability of assigned values for catalytic concentration of enzymes in calibrators and control materials

YU-JUS, How to measure the concentration of liquid

JUS U.C5.092-1994 Liquid flow measurement in open channels by weirs and flumes - End-depth method for estimation of flow in rectangular channels with a free overfall

IN-BIS, How to measure the concentration of liquid

IS 6059-1971