FIDAS stands for Fine Dust Analysis System and FIDAS stands up above the rest as the most advanced optical particle spectrometer for ambient PM monitoring. The Model 100 is the entry level system without certification and designed for use in research and industrial projects where compliance with EU and UK legislation is not required. The model 100 can be supplied with our without the IADS sampling system which is used for ensure that moisture does not affect the measurements of the PM concentration. Data is available for TSP, PM10, PM4.0, PM2.5, PM1 and Pn (particle number) as well as size distribution data over the range of 0.18 to 18 microns. Options to extend to 100 microns are available.