Air Dryer filled with extremely absorbent silica beads removes almost all moisture from the ambient air. Equipped with filters at its air inlet and outlet, it dramatically reduces particles entering to your ozone generator and hence reduces the risk of the second pollution. Best of all, it will increase the efficiency of your ozone generator.Air Dryer is user-friendly. The white silica beads turn wet, put them out and dry them then put them into cylinder drier again. The filters can be easily cleaned by a brush or a vacuum.