The OpenCPC® is the world’s first fully open source, low-cost, condensation particle counter. It’s design is focused on simplicity for iteration, repair, and replication.

The OpenCPC uses condensation growth to transform invisible ultrafine particles into optically detectable droplets, enabling precise measurement of particles as small as 10 nanometers. This powerful technique allows for real-time detection across a broad size range, including the critical ultrafine region (dp < 100 nm) that most optical sensors miss. By leveraging this proven method in a compact, open-source design, the OpenCPC delivers precision-grade particle counting at a fraction of the cost of traditional CPCs.

Applications:

• Indoor and outdoor ultrafine monitoring

• General aerosol research

• Filtration and Air Cleaner characterization