Environmental Particle Counters

Environmental particle counters provide a critical complement to traditional mass-based air quality measurements. While mass-based methods capture the total weight of airborne particles, number-based techniques - like those used in Condensation Particle Counters (CPCs) - offer a more advanced approach by counting individual particles, regardless of size. This is especially important for ultrafine particles, which contribute little to overall mass but may exist in large quantities from sources like traffic and residential heating. CPCs detect particles above a defined cutpoint (commonly 2.5, 7, or 10 nm) and count nearly all particles across the ultrafine and fine ranges. TSI offers a wide range of CPC models trusted for urban and remote environmental monitoring. Whether you're looking for a low-maintenance, water-based instrument like the 3783 Environmental Particle Counter, or require full compliance with EN 16976 using our 3750-CEN model, TSI’s CPCs deliver reliable, real-time particle number concentration data around the world.