Salin Plus Air Purifier works by having air constantly passing through the filter with micro-crystalline salts which generates a fine, constant spray of sodium chloride in the surrounding area, while changing the ionization of the air. The air purifier provides relief for asthma, bronchitis, and other respiratory allergies. The machine comes with the first filter included which generally lasts 3-4 months. Benefits: Consists of a special filter made from microcrystalline sediment and a bellows mechanism. Easy to use & maintain. Ensures general purification of the air in all types of areas: room, apartments, offices. No pollution on the environment it treats. How to use/ Cautionnary details LEAKING SALIN PLUS & WHAT TO DO TO AVOID *Only use Salin Plus in a DRY ROOM with windows always closed, especially during seasonalchanges i.e., Spring to Summer, Autumn to Winter. Moisture levels are increased duringthese times.*Leaving your windows open in the room where you store or use your Salin plus is increasingthe risk of Salt particles liquefying and this can cause damage to the Salin Plus.*If your open windows at all day or night we would advice to remove the unit from thisroom and store in a dry room (hot-press is a good place to store) and only replace once thewindows have been closed for a few hours, this allows any build up of moisture to dry out.*Do not place your Salin Plus near windows, in rooms where there is a higher level ofmoisture i.e. Kitchen, ensuite or room where you are aware of any damp issues.*Salt is a natural dehumidifier and will absorb from the room/air and turn salt particles toliquid. WHAT TO DO IF YOU NOTICE WATER OR CORRISON *Stop using your Salin plus immediately, unplug from electric supply.*Remove the filter and dry out the machine completely with a cloth, dry out the filter, thiscan be done by leaving it to air dry in a dry room or placing in your hot-press over night oruntil completely dry.*Keep the windows in the room closed at all times, this allows the moisture to dry out.*After approximately 3-4 days of your room drying out, you should be able to use your SalinPlus again. Remember to keep windows closed to avoid this repeating.*Check your Salin plus Daily.*Prolonged use of your Salin Plus machine in these conditions will result in your Salin Plusgetting damaged and unable to use.