Product details:

Desiccant removes water vapor down to a dew point of -40 F. Innovative quick change 10 lb. desiccant cartridge bag is made of a special fiber media which removes aerosols and solid particles down to an amazing .01 microns. This means there is no need for coalescing or final filters. Built-in color changing indicator lets you know when to change filter cartridge. CT30P is designed with an integral base for free standing use. Best choice for portability.