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

The Model 9303 features a sturdy yet lightweight high-impact injection-moulded 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.

TSI AEROTRAK 9303 (259.25 KB)

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Product Details


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 TSI AeroTrak 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.


Features and Benefits

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


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