
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
Model 8306 Solves USP 800 Facility’s Non-compliance
Model 8306 Solves USP 800 Facility’s Non-compliance Los Angeles CA – August 10, 2020 – Mr. Greg Spahr, President of Health & Safety Resources, has shared another application video of the Particles Plus model 8306 Handheld Particle Counter solving a hospital’s USP...
Particles Plus Recognizes Dr. Yoshio Otani
Stoughton, MA – July 10, 2020 – Particles Plus would like to recognize Dr. Yoshio Otani, for receiving the International Aerosol Fellow Award. This award is presented once every two years by the International Aerosol Fellow Award Society and is granted to individuals...
Particles Plus Introduces New Handheld Air Quality Monitor
Stoughton, MA – June 10, 2020 – Particles Plus has introduced their new Handheld Air Quality Monitors for IAQ, industrial hygiene, and ambient air quality markets. The new instrument was designed to incorporate the lightweight and ergonomic design of their existing...