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, Inc. Completes 2025 Service & Calibration Training
Particles Plus, Inc. hosted its largest-ever Service & Calibration Training at its new Stoughton headquarters, uniting global partners for hands-on instruction and launching its Certified Calibration Partner program.
Particles Plus, Inc. Supports the Next Generation of Industry Leaders
Particles Plus, Inc. is advancing the future of air quality innovation by fostering education, training, and mentorship programs that prepare the next generation of environmental professionals.
Particles Plus, Inc. Unveils the Tom Grillo Training Center
Particles Plus, Inc. has opened the Tom Grillo Training Center in Stoughton, MA, a state-of-the-art facility offering hands-on education, calibration, and professional development to support global partners, customers, and staff in air quality monitoring.