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 Demos New Products at 2026 AHR Expo
Particles Plus, Inc. showcased its latest air particle monitoring technologies, connected with industry professionals across HVACR and building sciences, and demonstrated how real-time contamination control solutions support healthier and more energy-efficient indoor environments.
Particles Plus, Inc. Demos Air Quality Technology At Sharon High School
Particles Plus, Inc. delivered a hands-on air quality demonstration for environmental science students at Sharon High School, introducing real-time particle monitoring technology and highlighting the importance of clean air, public health, and environmental careers.
Particles Plus Participates in 14th Asian Aerosol Conference
Particles Plus, Inc. participated in the 14th Asian Aerosol Conference (AAC 2025) at the Taj The Trees, Vikhroli in Mumbai, India.