Pegasor Oy

Pegasor is a Finnish technology company specializing in ultrafine and nanoparticle measurement. Our advanced sensors and instruments deliver fast, accurate, and reliable data for applications ranging from vehicle emissions to ambient air quality monitoring. Since 2008, Pegasor has led innovation in particle measurement. Our mission is to provide user-friendly, high-performance solutions for both standalone use and system integration. Our product portfolio includes: PPS-G2 – Our flagship sensor for real-time particle number and mass measurements, ideal for OEM integration in PEMS and RDE systems PPC – A portable particle counter for accurate, on-the-go emission testing Airam – A smart, connected solution for continuous ultrafine particle monitoring in urban and industrial environments Designed for demanding conditions and trusted by customers worldwide, egasor solutions offer: High data quality Fast response times Proven durability in real-world use With thousands of devices in operation and short lead times, we’re ready to meet your needs—whether you're a manufacturer, researcher, or regulator. Learn more about our solutions at