
Count On Us™
Particles Plus offers a line of advanced-technology particle counters, air quality monitors, and environmental sensors. As the most vertically integrated particle counter manufacturer and technology licensing company in the industry, Particles Plus engineers and manufactures its own counter, display, battery, vacuum pump, and sensor technology from the ground up. Added intelligence in each module results in products with superior performance, extended features, accuracy, quality, reliability and value.

The most accurate sensor and particle counting technology on Earth


Made in USA
100% of Particles Plus® products are designed and assembled in the USA, while 89.2% of the parts are built by 35 different suppliers located in the USA and Canada.
Latest News
Particles Plus New Firmware
Stoughton, MA – February 4, 2020 – Particles Plus released their new instrumentation firmware that will be available to all existing customers. This new firmware will be included in all new instruments. The new firmware update provides for many improvements on their...
Particles Plus to Exhibit at AHR 2020 – Orlando Florida
Stoughton, MA – January 10, 2020 –Particles Plus, Inc. will be exhibiting at the upcoming AHR2020 event being held at the Orange County Convention Center this upcoming February 3rd through the 5th. They will be located in the West Hall at booth number 1472. The AHR...
New Jersey IAQA Chapter Event
December 12, 2019 – Princeton, NJ - Particles Plus was in attendance as the Diamond Sponsor of the 2019 Central New Jersey Indoor Air Quality Association’s annual Year End Dinner and Technical meeting. The meeting was well attended including the National Association...