
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
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...
Particles Plus New Firmware and IoT
Stoughton, MA – August 18, 2017 – Particles Plus released their new instrumentation firmware that will be available to all existing customers, and included in all new instruments produced and shipped after August 18th. This firmware update provides for many...
Particles Plus New Large Particle Sensors
Stoughton, MA – July 8, 2017 – Particles Plus announced the launch of their new model 8506-20 and 8506-30 particle counters, specifically designed to count large particles. The new instruments were designed with applications in the automotive manufacturing industry...