The certified Fidas^® series fine dust monitors use the officially approved measurement technique of optical light scattering on the single particle and are equipped with a white LED light source with high light intensity, high light stability and long service life. The patented T-aperture technology and digital signal processing guarantee extremely accurate particle measurement in high temporal resolution, even at high concentrations.

In addition to the PM values, the particle count and the particle size distribution in 32 size classes per decade in the particle size range from 0.18 to 18 µm (other size ranges on request) can be called up and used for further assessments.

The instruments of the Fidas^® series can be easily calibrated on-site, require little maintenance, and are characterized by low overall operating costs. Due to these advantages, these instruments are successfully used worldwide for regulatory air quality monitoring.