Upcoming standardization for charge conditioners used in particle characterization and for the generation of calibration and test aerosols –ISO 19996 Juergen Spielvogel1, Hiromu Sakurai2, Stefan Seeger3, the members of ISO/TC 24/SC 4/WG 12 Comparison of a plasma source and standard ionising sources for nanoparticle charging in metrological applications R. Gillies J. Tompkins, K. McKay An Investigation by NPL into the Airborne Particle Removal Efficiency of a Commercial Extraction System in a Dental Surgery J. T. Tompkins, J.J. Allerton, D.M. Butterfield, F. Matsakas, A. S. Brown IAC Dedicated Poster at IAC 2022 in Athens Towards standardizing the measurements of sub-10 nm aerosol particle size distribution– Dr. Katrianne Lehtipalo (University Of Helsinki) IAC Dedicated Poster at IAC 2022 in Athens Automating the Swiss Pollen Monitoring Network– Dr. Gian Lieberherr (Meteoswiss) IAC Dedicated Poster at IAC 2022 in Athens Method validation for mercury determination in airborne particulate matter and implementation in Pardubice area (Czech Republic)- Dr. Theopisti Lymperopoulou (National Technical University Of Athens) IAC Dedicated Poster at IAC 2022 in Athens Field intercomparison of stationary and portable soot instruments in a rural background environment under winter conditions– Dr. Mårten Spanne (Malmö Stad) IAC Dedicated Poster at IAC 2022 in Athens An Investigation by NPL into the Airborne Particle Removal Efficiency of a Commercial Extraction System in a Dental Surgery– Mr. Jordan Tompkins (NPL) IAC Dedicated Poster at IAC 2022 in Athens Qualification of portable instruments for ambient aerosol measurements– Mr. Stig Koust (DTI) IAC Dedicated Poster at IAC 2022 in Athens Characterising the Silver Particle Generator; a pathway towards standardising silver aerosol generation– Dr. Tobias Hammer (METAS) IAC Dedicated Poster at IAC 2022 in Athens Preliminary results of air quality at urban site with a low cost sensor– Prof. Inmaculada Foyo Moreno (University of Granada) IAC Dedicated Poster at IAC 2022 in Athens MAC values in South East Europe during 2017 to 2019– Dr. Stergios Vratolis (NCSR DEMOKRITOS) 12th International Conference on “Instrumental Methods of Analysis” (IMA-2021) 20-23 September 2021, additional details can be found here https://www.mne2021.org/ EXSA virtual conference 2021 Final Programme of AEROMET II Modelling Workshop