At the core of the ceramic filter element is Diatomaceous Earth (DE). DE contains fossil-like skeletons of microscopic water plants called diatoms, which are a type of algae. These diatoms range in size from less than 5 micrometers to more than 100 micrometers, and have a unique capability of extracting silica from water to produce their skeletal structure. When diatoms die, their skeletons form a diatomite deposit. In its natural state, diatomite is 85 percent inert silica. This type of filter is best suited to treat water that has low amount particulate sediment. DE filtration has shown superior capability for the removal of pathogens and asbestos. Odorless, tasteless, and chemically inert, DE is ideal for filtering water for human consumption.