Wein Vortex Vi-3500 Room Ionic Air PurifierQuietly cleanse the air in any room with the Vortex VI-3500 Ionic Air Purifier from Wein. The VI-3500 begins to work immediately once plugged in, alternating between on and off cycles. When on, a stream of 3.4 trillion ions per second is released into the air. The air purifier is engineered to release them..