Particle Measuring

AeroTrak™ 9350/9550

The TSI AeroTrak® 9350 and 9550 Portable Particle Counters offer best-in-class features and versatility. They provide a 1.77 CFM (50 L/min) flow with 0.3 or 0.5 μm sensitivity. Compatible with TSI’s accurate ventilation probes that measure air velocity/temperature/RH, these products provide you with a complete solution for your certification needs. Particle count data can be conveniently viewed on screen, downloaded using TrakPro™ Lite Secure software, or printed directly to the integrated printer. 

Uses include the monitoring of clean room environments in pharmaceutical, healthcare, medical device, aerospace, automotive and many other applications. 


  • AeroTrak 9350 particle counter: 0.3 to 25 μm
  • AeroTrak 9550 particle counter: 0.5 to 25 μm
  • Up to six channels of simultaneous data
  • 1.77 CFM (50 L/min) flow rate
  • Complies with all requirements of ISO 21501-4
  • Data storage: 250 zones, 999 locations, and 10,000 samples
  • USB, USB Storage Device and Ethernet data transfer
  • Industry’s loudest audible alarm
  • Easy icon-driven touch screen operation
  • Onboard reports for ISO-14644-1, EU GMP Annex 1, and FS209E
  • External certification reports via TrakPro Lite Secure
  • Allows storage and recall of specific Recipes and Zone configurations
  • Displays up to three environmental parameters
  • Stainless steel enclosure
  • Lightweight

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