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 Hosts IEST Training at Stoughton Headquarters
Particles Plus hosted an IEST hands-on training course on HEPA testing and airflow visualization in its new training cleanroom space at the company’s Stoughton headquarters.
Particles Plus Attends IAQA Workshop on Env. Hazards of Cannabis Production
Particles Plus participated in the IAQA Seattle Chapter workshop examining indoor air quality and occupational health considerations associated with legal and illicit cannabis production.
Particles Plus Inc. Attends AIHA Connect 2026 in New Orleans
Particles Plus participated in AIHA Connect 2026, showcasing particle counting and environmental monitoring solutions for industrial hygiene, occupational health, and indoor air quality professionals.