The Dylos DC1700 is a particle counter that measures particles in two size ranges: 500 nanometers and above and 2.5 micrometers and above. The DC1700 is upgraded from the DC1100 pro model by including an internal battery, a real time clock for time/date stamping data, larger internal memory, and shielding against electro-magnetic Interference.

A Laser Particle Counter with 2 size ranges (>0.5 & >2.5 microns) – small (bacteria, mold, etc) large (pollen, etc.).