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The article provides insights into the essentials of metrology, focusing on the technical day organized by the French College of Metrology on February 2, 2023, in France. Key topics covered include metrology stakeholders, measurement uncertainties, metrological traceability, conformity declarations, and the role of metrology in organizational processes.

The article focuses on the MetClimVOC project's round table during the CIM2023, addressing challenges related to monitoring volatile organic compounds (VOCs) affecting air quality and contributing to climate change. It states that the project aims to develop stable and traceable reference gas mixtures for priority VOCs, optimize sampling and analysis methods, and deploy traceable working standards for monitoring stations.