TSI 9303 Aerotrak Handheld Particle Counter

The TSI 9303 Aerotrak Handheld Particle Counter offers the most features and flexibility for customers interested in a low cost and versatile handheld particle counter.

Key Features

  • 0.3 to 25 µm size range
  • 0.1 CFM (2.83 L/min) flow rate
  • Up to three channels of simultaneous data
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TSI Instruments

Please note - Product designs and specifications are subject to change without notice. The user is responsible for determining the suitability of this product. We offer distribution of TSI products to the UK and Ireland.

Features & Benefits

  • • ISO 21501-4 compliant
  • • 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)


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

The Model 9303 features a sturdy yet lightweight high-impact injection-molded plastic design for easy handling. The instrument is easy to configure using an intuitive keypad. The internal memory can store up to 1,500 sample records of particle count data which can be conveniently viewed on screen or downloaded using a USB port to TSI's TrakPro™ Lite Secure Software.

The instrument reports up to three particle sizes simultaneously. The middle channel is user selectable for either 0.5, 1.0, 2.0, or 2.5 µm.

The Model 9303 complies with all the stringent requirements set forth in ISO 21501-4. It is calibrated with NIST traceable PSL spheres using TSI's world-class Classifier and Condensation Particle Counters, the recognized standard for particle measurements.