Easy Change Desiccant Air Dryer The desiccant air dryer is designed to be a point of use system. It is capable of removing dirt, water, oil, and water vapor from compressed air. It consists of a separator and desiccant cartridge. The cartridge has a housing material that acts like a coalescer and final filter. CT series desiccant air dryers remove water vapor from the compressed air down to a dew point of -40 degrees F Quick change 10 lb. desiccant cartridge bag is made of a special fiber media which removes oil aerosols and solid particles down to .01 microns – meaning no need for coalescing or final filters Install at point of use