The Sterilbio Analytics Model DMH-635 Hand-Held Indoor Air Quality Analyzer measures the Particle Counts as well as the concentration of particles in the air. It adopts the light scattering principle for detection. The device is is very light, and is very easy to use. It simultaneously measures and displays the results for PM 1.0, PM 2.5 and PM 10.0.
It uses a semiconductor laser light source, has a large colour LCD screen, has a large data storage capacity, and comes with free software to export data.