We stock a range HydROtwist Stainless Steel Gravity Fed System with Doulton Ceramic Candles, Cerametix all in one or berkey black purification candles that removes all impurities including Fluoride and also raises the PH (Alkalises) utilising two seperate filters or an all in one ceramic filter. They come in a range of sizes similar to the range of berkey purification systems including 6L Travel, 8L Big berkey, 12L Royal Berkey and 18L Imperial berkey.