The project partners comprise the top European National Metrology Institutes and key players in the industry. Together, we will address the key measurement challenges shown above by developing physical solutions and best practice recommendations through scientific studies, the results of which will be disseminated publicly for use by anyone in the industry.


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Internal partners

The consortium brings together the leading NMIs and DIs in flow metering, gas metrology, physical properties and leak detection, and they are complemented by research institutes, universities and industrial organisations.




Air Liquide is a world leader in gases, technologies and services for industry, health, food and electronical, present in 80 countries with approximately 68,000 employees and serves more than 3.5 million customers and patients. Air Liquide benefits from 40 years of unique know-how encompassing the entire hydrogen value chain, from production to transportation and distribution, for industry and energy transition, including other gases like carbon dioxide and biomethane. Air Liquide developed strong skills in gases quality and analysis, in safety and risk management for production, distribution and end-uses thanks to a wide knowledge of accidental phenomena and associated consequences, and several mitigation ways including detection. Air Liquide will take part in work of WP2, produce gas mixtures for the measurements performed in WP3 and support leak monitoring activities within WP4.


BAM as a designated institute maintains and disseminates the German National Standards of gas composition for calorific value determination and surveillance of vehicle exhaust emission. BAM is active in standardisation such as ISO/TC 158 “Analysis of Gases” and DIN NA 062-05-73 AA “Arbeitsausschuss Gasanalyse und Gasbeschaffenheit”. BAM has facilities for gravimetric preparation of primary gas standards and gas analysis using GC, and also a unique measurement facility for measurements of gas or liquified gas under high pressure (e.g. 150 bar) by NMR and Raman spectroscopy. BAM is currently coordinating EMPIR JRP 19ENG03 MefHySto. BAM will contribute to WP2 through the provision of Gas Standards and development of analytical techniques.

CEM has facilities and experience preparing compressed gas mixtures according the gravimetric method described in the ISO 6142-1 standard, together with chromatographic and spectroscopic analytical techniques. CEM contributed to EMRP JRPs ENG01 GAS and ENG54 Biogas, with gas mixtures for the determination of density and heat capacity in energy gases and biogas, and in the EMPIR JRPs 15NRM03 Hydrogen and 16ENG01 MetroHyVe, developing primary reference gas mixtures and analytical techniques for the determination of trace impurities in hydrogen. CEM will be involved in WP2 preparing PRMs for decarbonised gas grids.

DNV is the world’s leading classification society and a recognised advisor for the maritime industry and the technical advisor to the oil and gas industry that delivers world-renowned testing, certification and advisory services to the energy value chain including renewables and energy management. DNV has capabilities for fuel analysis of gaseous energy carriers and a test facility for multiphase flows up to 1000 m3/h, DNV is a provider of digital solutions for managing risk and improving safety and asset performance for ships, pipelines, processing plants, offshore structures, electric grids, smart cities and more. With 100,000 customers across the maritime, oil and gas, energy, food and healthcare industries, as well as a range of other sectors, DNV operates in over 100 countries. DNV GL will perform flow metering activities within WP1.

Enagas is Spain’s leading natural gas transmission company and Technical Manager of the Spanish gas system, with 50 years’ experience in the development, operation and maintenance of gas infrastructures. Enagas is accredited as an independent TSO (Transmission System Operator) by the European Union and carries out its activities in eight countries. Enagas is firmly committed to gas grid decarbonisation through the injection of renewable gases, such as hydrogen and biomethane, as new solution in the energy transition process and in the promotion of a low-carbon economy. Enagas will perform flow metering activities within WP1 and support leak detection activities within WP4.

INRIM has a recognised experience in measuring transport and thermodynamical properties of fluids, especially speed of sound, viscosity and density. The thermodynamic program of INRIM addresses an accurate characterisation of the thermo-physical properties of the fluids for energetic applications, measuring transport and thermodynamical properties of pure and blends fluids, by means of the experimental speed of sound, viscosity and density measurements, besides the development of numerical models for the determination of the fluids EoS. INRIM will lead WP3 and perform technical activities within this WP.

NEL is a designated institute that is responsible for maintaining the UK National Standards for Flow Measurement. NEL has relevant experience for metrology of both hydrogen; with designing a hydrogen flow calibration facility for domestic gas meters which will be utilised in this project. For carbon dioxide NEL previously built and ran a test facility which studied carbon dioxide and impurities across gas, liquid and supercritical states. NEL is a member of the following standardisation committees: ISO/TC 30, OIML/TC 8 and EURAMET TC Flow. NEL will lead WP1 and perform technical activities within this WP.

NEN is a Dutch Standardisation Institute and is the Dutch knowledge centre for standards that supports over 1400 standardisation committees with 7000 members. NEN is the Dutch representing member in international standardisation organisations, such as ISO, IEC, CEN and CENELEC. NEN has access to strong hydrogen network and holds secretariat in relevant hydrogen EU/ISO standardisation committees, including CEN/CLC SFEM/WG Hydrogen and CEN/CENELEC/JTC 6. NEN will lead the WP5 for impact.

NPL is world-leading in the field of gas metrology and already provides primary reference materials for natural gas, and for impurities in biomethane (EN 16723-1) and hydrogen (ISO 14687 Grade D). They also provide an accredited (ISO 17025) service for performing hydrogen quality assurance for fuel cell vehicles. NPL has previous experience within the energy gas sector for validating sampling methods and online analysers. NPL also successfully coordinated EMPIR JRP 16ENG01 MetroHyVe. NPL will coordinate this project, contribute to technical work in WP2 focusing mainly on methods for measuring low-level impurities in carbon dioxide, and lead the research in WP4 centred around leak detection.

PTB is one of the leading institutes in Europe in fuel gas analysis and gas spectroscopy. For the latter PTB has experience in the development of TDL spectrometers for different applications including natural gas monitoring – i.e. through their metrological experience of the Metrology in Chemistry area on IR-spectrometric gas metrology. PTB covers a breadth of knowledge from the complete design, development and validation of TDL spectrometers up to measurements of line parameters by means of Fourier-transform spectroscopy. PTB will take part in work of WP2, perform activities to develop analysers in WP3 and support partners of WP4 to perform analysis of leak detections.

RISE is the national laboratory in Sweden for gas analysis of energy gases with a strong profile directed to gas industry. RISE participated in EMRP and EMPIR JRPs related to gas metrology (ENG01 GAS, ENG54 Biogas, ENG60 LNG II, 15NRM03 Hydrogen, 16ENG01 MetroHyVe, 16ENG05 Biomethane). The laboratory in Gothenburg, Sweden, provides analyses of energy gases (biogas, biomethane, hydrogen). RISE is involved in WP2 to develop analytical methods, run a biomethane proficiency testing scheme and lead the sampling task.

RUB has been involved in the development of thermodynamic property standards for more than 35 years including the measurement of highly accurate data for thermal properties, speeds of sound, development of corresponding experimental equipment, and development of highly accurate multiparameter equations of state for pure fluids and mixtures. The internationally accepted reference equations of state for the main components

TUBS has 20 years of experience in the operation of drones for different applications. Their Institute of Flight Guidance is focused on the development and modification of drones, sensor development and implementation, and worldwide operation of drones for particular research purposes (air pollution, air sampling, boundary layer dynamics, surface mapping). TUBS will support WP4 activities relating to the use of drones to monitor gas leaks.

TUBITAK, the Turkish NMI, has experience on measurement of thermophysical properties to be used to implement accurate formulation of the energy content of natural gas with different compositions. TUBITAK has participated in EMRP and EMPIR JRPs related to gas metrology (ENG09 Biofuels, ENV52 HIGHGAS, ENG54 BIOGAS, 16ENV05 MetNO2). TUBITAK is involved in WP3 by performing measurement of calorific value using a reference gas calorimeter.

TU-Ch is experienced in measurements of hydrogen-enriched natural gas and will contribute to the project with comprehensive expert knowledge in the accurate measurement and modelling of natural gas in its gaseous and liquified form (LNG). In this project TU-Ch will contribute to WP3 by applying a novel measurement technique for vapour-liquid equilibrium (VLE) measurements of fluid mixtures. The resulting data are an essential precondition for the development of equations of state (EOS), which are used in process simulators, in custody transfer calculations or other applications where reference values are crucial.

UNL hosts the Laboratory for Vacuum Technology and Metrology (METROVAC), a unique laboratory in Portugal accredited in the field of vacuum technology offering calibration of reference leaks, vacuum gauges down to 10-6 mbar and testing refrigerant gas leak detectors. UNL was a pioneer in Europe in implementing the EU regulation 842/2006 regarding developing a method to test refrigerant gas leak detectors. METROVAC was engaged in several EMPIR JRPs in the field of vacuum gauges calibrations and in developing a high accuracy ionisation gauge to measure pressures from 10-4 to 10-8 mbar. UNL will support WP4 through providing reference leaks.

UVa is one of the oldest universities in Spain. Its research group Thermophysics & Calibration (TermoCal) has 30 years of experience undertaking research in 1) Fundamental Metrology and 2) Thermophysical Properties and Phase Behaviour of multicomponent fluid mixtures. They specialise in very low uncertainty measurements and comprehensive interpretation and prediction tools needed to develop advanced molecular and engineering modelling, reliable standards, traceable measurements and validated novel techniques. UVa participated in EMRP JRP ENG54 Biogas and is currently involved in EMPIR JRP 19ENG03 MefHySto. UVa will carry


VSL is a worldwide leading NMI in both static and dynamic gas mixture preparation and in the development of high-accuracy reference analytical methods for the comparison of the composition of gas mixtures. VSL has abundant experience with the determination of the contents of trace-level impurities in various matrices. VSL also has state-of-the-art flow standards and decades of experience in performing traceable calibrations of gas meters used in the gas grid. Besides supporting technical activities in WP1, VSL will lead WP2 and perform activities within the WP including development of primary reference materials, gas analysis methods and running a comparison for testing online hydrogen in natural gas analysers.