
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
40th Annual Technical Meeting on Air Cleaning and Contamination Control
Tokyo, Japan – April 8th, 2023 – Particles Plus, a world-wide leader in air quality monitoring solutions, is proud to have participated in the 40th Annual Technical Meeting on Air Cleaning and Contamination Control. The event, which took place from April 18 to 19,...
Asian Conference on Indoor Environmental Quality 2023
New Delhi, India – February 24th, 2023 – Particles Plus attended the Asian Conference on Indoor Environmental Quality (ACIEQ) 2023, presenting the company’s indoor environmental solutions and educating the attendees on the importance of indoor environments for...
In-Situ Elemental Composition Analysis of Large Inhalable Aerosol Using Laser Induced Breakdown Spectroscopy
Colorado, USA – February 8th, 2023 – Particles Plus instruments were used during the research into In-Situ Elemental Composition Analysis of Large Inhalable Aerosol Using Laser Induced Breakdown Spectroscopy at Colorado State University. The paper was presented by...