As a new application,Brown Fused Alumina and White Fused Alumina are also used as filter media for purifying water and waste water and other resourses. BFA and WFA are both safe materials which can be touched by human skin. And they are dense materials with fine coarse grades. Larger sized grains of Brown Fused Alumina will filter out the large size particulates and small size grains will filter out small size particulates. And they are heavier than other filter media because of its high density, which is ideal for filtration.