ENCO Ltd. provides sampling and monitoring instruments and systems for environmental and process measurements. Specifically, it provides solutions in indoor and outdoor Air Quality monitoring. It offers optical monitors for continuous and simultaneous measurement and display of mass concentration of Total dust, PM10, PM2.5, PM1, PM4, or even in nm scale and simultaneous measurement of number of particles. A variety of different types are available: Handhelds, portable instruments, 19’’ rack enclosures for integration in air quality monitoring stations or outdoor stand-alone models.