EVENTS 2024 41st Aerosol Science and Technology Research SymposiumAugust 20th-22thTokyo, JapanKogakuin University Hachioji Campushttps://sites.google.com/view/jaast41ku/ European Aerosol conference 2024August 25th-30thTampere – FinlandTampere Hall (address: Yliopistonkatu 55)https://www.eac2024.fi/ 5. Symposium “Ultrafeine Partikel in der Außenluft und in Innenräumen” September 16th-17thBerlin, GermanyTU Berlin stattfindenhttps://www.tu.berlin/uc/ufp Messtechniktagung der Tiroler LandesregierungNovember 5th-6thKufstein, Austriahttps://Messtechniktagun_der_tiroler_Landesregierung.com 2025 GAeF START 2025 February 25th-26th Winterthur, Switzerland SCOEH https://info.gaef.de/start2025 CIM 2025 March 11th-14th Lyon, France Eurexpo https://cim-metrology.org/en 1st AIR Quality ForumBelgium, Brusselshttps://count.palas.de/airqualityforum