The Alphasense OPC-N2 sensor is an optical particle monitor that measures PM1.0, PM2.5 and PM10. Alphasense is certified with ISO 9001:2008 .

The Alphasense OPC-N2 sensor uses laser beams to detect particles from 0.38 micron to 17 micron diameter. Count measurements are converted into mass concentrations of PM1.0, PM2.5 & PM10 using embedded algorithms.