The Jomesa PSE System is an entirely new approach to performing material analysis on particles extracted during cleanliness testing (ISO 16232/VDA19.1). The Jomesa PSE is a desktop size SEM/EDX system that integrates with the Jomesa HFD Automated Cleanliness Analysis System. By sharing a local network connection, the Jomesa HFD system will perform the optical counting and measurement of contamination particles while allowing the operator to identify “interesting” particles to be further analyzed for material composition. The filter sample is then loaded into the PSE systemfor material analysis directly on the particles identified. This synergy between optical and SEM technology greatly reduces wait times normally associated with SEM/EDX analysis for cleanliness testing as the particles in question are directly analyzed, a full scan of the filter membrane is not necessary. Full filter scans and particle size dependent scans are also available.