Natural and reliable 3-stage filtration Compatible with all gravity filtersMulti-layered microporous purifying candle Coloidal silver cover to sterilise water and eliminate bacteriaFilters microorganisms; dirt, rust, algae and other suspended solidsThe Stefani Ceramic replacement candles are suitable for all of the Gravity Purifiers in the Stefani range including the 5L Terracotta, stylish 10L Black purifier, 8L and 12L Ceramic Purifier. Also suitable to any Gravity Purifiers that use this type of candle. Easy to change and replace.The most reliable and natural way to have pure water on tap. Inside the unit is a multi-layered, microporous purifying candle of advanced design, providing clean fresh filtered water on tap.