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AeroTrak 9550 Portable Particle Counter

Flow Rate 1.77 CFM (50 L/min) ±5% accuracy / Particle Size Range 9550-02: 0.5 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.

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    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® Portable Particle Counter Model 9550 offer best-in-class features and versatility. The Model 9550 provides a 1.77 CFM (50 L/min) flow with 0.5 μm sensitivity. Compatible with TSI’s accurate ventilation probes that measure air velocity/temperature/RH, the Model 9550 provides 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.

    This particle counter can generate pass/fail reports for ISO 14644-1, EU GMP Annex 1, and FS209E, via the onboard printer and the supplied TrakPro Lite Secure download software. Multiple particle counter configurations can be conveniently stored and uploaded as needed. This product can be used as a stand-alone particle counter or integrated into a facility monitoring system like TSI FMS Software.

    The Model 9550 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.

    This particle counter can be placed in Data Integrity Mode for enhanced data integrity. Used in conjunction with TSI TrakPro™ Lite Secure Software, Data Integrity Mode is designed per the ALCOA+ principles to meet the demanding regulatory requirements of GMP users. Learn more >  


    • Particle contamination monitoring

    • Installed filter leak testing

    • Cleanroom certification


    To download applicable software and/or firmware, please use the Software/Firmware Wizard.


    • 0.5 to 25 μm size range

    • 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



    Contamination Control for Electronic and Semiconductor Applications Brochure US.pdf


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




    AeroTrak Portable Particle Counter Model 9350 9550 Spec Sheet US.pdf


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