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Flow Rate 0.1 CFM (2.83 L/min) / Particle Size Range 0.3 to 25 µm

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    TSI Incorporated
    TSI Incorporated

    TSI sets the gold standard. All airborne particle counters in the world are calibrated to TSI platforms.

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    Fast Shipping
    After you buy, you shouldn’t have to wait weeks for your gear to arrive. We ship fast so you can keep your cleanroom project on schedule.

    We service everything we sell. That means you get faster troubleshooting support and better response times than you would with other manufacturers or manufacturer’s reps.

    Special pricing is available for your business. Contact us and set up an account to make sure you get the best price available on every purchase.

    We guarantee you’ll get the right instrument for your cleanroom. If it isn’t exactly right, we’ll swap it out and find the right choice. If for some reason we don’t carry what you need, we’ll point you to a source that does (we’ll never sell you an alternative that doesn’t do exactly what you need it to do).


    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-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.


    • Tracking down particle contamination sources

    • Classifying clean areas

    • Looking for filter leaks

    • Conducting IAQ investigations 

    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 molded plastic

    • Lightweight - only weighs 1.3 lbs (0.58 kg)


    Contamination Control for Electronic and Semiconductor Applications Brochure US.pdf


    Contamination Control for Pharma-Life Science Applications Brochure US.pdf


    Indoor Air Quality Measurements Family Brochure US.pdf



    AeroTrak Handheld Particle Counter Model 9303 Spec Sheet US.pdf



    Calibration Certificate Failure Explanation for AeroTrak Particle Counters App Note (CC-119) US.pdf


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