
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
New Advanced Power Management
December 13, 2014 Boston – Particles Plus brings a new performance standard to the handheld particle counter market. With a patent-pending power management circuit design, the instruments provide the longest continuous and normal mode sampling of any handheld...
Indoor Air Quality Monitors – Coming Soon
Stoughton, MA – November 1, 2014 – Particles Plus is working on a very exciting new product line which will help occupants breathe cleaner and safer air. The upcoming Indoor Air Quality Monitors will be available in 2015 and we will present them at the Indoor...
Particles Plus Launches New Remote
October 1, 2014 Foxboro – ISPE Boston - Particles Plus announced the introduction of their new 1 CFM wall-mounted, 6-channel, remote particle counter with sloped top surface designed for (GMP) disinfection wash down. This new wash-proof, wall-mounted remote particle...