TSI AeroTrak Handheld Particle Counter 9303


  • Size range: 0.3 to 25 μm
  • Flow rate: 0.1 CFM (2.83 L/min)
  • Simultaneous data in up to three channels
  • Compliant with ISO 21501-4
  • USB serial output
  • Compatible with TrakPro Lite Secure
  • 1,500 sample record storage
  • 250 location labels
  • Large 3.2-inch (8.1-cm) display
  • On-screen data review
  • User-selectable middle size channel
  • Removable Li-ion battery
  • Intuitive keypad menus
  • High-impact injection-molded plastic
  • Lightweight: only weighs 1.3 lbs (0.58 kg)

TSI AeroTrak® Handheld Particle Counter Model 9303 offers exceptional features and flexibility at a low cost. Its sturdy yet lightweight design ensures easy handling and an intuitive keypad simplifies configuration. With internal memory capable of storing up to 1,500 sample records, particle count data can be conveniently viewed on-screen or downloaded using the USB port to TSI’s TrakPro™ Lite Secure Software.

The instrument reports up to three particle sizes simultaneously, with the middle channel being user-selectable among 0.5, 1.0, 2.0, or 2.5 μm. Compliant with ISO 21501-4 requirements, the Model 9303 is calibrated using NIST traceable PSL spheres with TSI’s world-class Classifier and Condensation Particle Counters, the recognized standard for particle measurements


  • Tracking down particle contamination sources
  • Classifying clean areas
  • Looking for filter leaks
  • Conducting IAQ investigations



TSI AeroTrak Handheld Particle Counter (Model 9303)_DpstarGroup