The blu Ionic Shower Filter Spare Part Set is a vital component for proper maintenance of your blu Ionic Shower Filter. The Upper Filtration Chamber with Stainless Steel Mesh is a patented permeable chamber that efficiently removes pollutants from shower water and enhances the ionization process. The blu Ionic Spray Plate is the main source for generating healthy negative via its 244 circular perforations; made of high grade stainless steel, it prevents lime scale build-up, which in turn minimizes shower head bacteria