
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
Healthy Building Summit 2017
Seven Springs, PA – November 2nd, 2017– Particles Plus attended the annual Healthy Building Summit at the Seven Springs Resort, participating in the onsite indoor air quality testing study performed by the organizers, the IAQ Training Institute. Particles Plus used...
EIA Fall Technical Conference
San Diego, CA – October 20th, 2017– Particles Plus will be attending the Environmental Information Association’s 11th Annual Fall Technical Conference this week at the Hyatt Regency Mission Bay. Jim Akey from Particles Plus will be presenting material on the use of...
IAQ Professionals Step Up in the Wake of Irma
Orlando, FL – September 29, 2017 – Particles Plus wishes to extend their heartfelt concern and support to the families and all those who suffered losses from Hurricane Irma that devastated many Caribbean Islands, including Puerto Rico and Cuba before making landfall...