
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
Real-Time Meter Solves Compliance Issues
Los Angeles, CA – November 27th – Particles Plus instruments are utilized in many industries where air quality and particle counting is a requirement or process for validating particle counts for regulatory or quality control purposes. With many different particle...
Healthy Building Summit 2018 – Research to Practice
Seven Springs, PA – October 25th – Particles Plus, a Marquis Sponsor of the Healthy Building Summit 2018, was on hand to participate and support its annual event with the theme of IEQ, Remediation & Restoration: Research to Practice. The focus of the event is to...
Particles Plus New Sensor at ASIC 2018
Oakland CA – September 12, 2018 – The Air Sensor International Conference kicked off on September 12th through the 14th at the Oakland Convention Center, with many Federal, State, Tribal and International Agencies present to learn more about the emerging technologies...