Zeobrite® media is now available through widespread distribution for swimming pool and potable water systems. Zeobrite® can be used in simple filtration vessels manufactured for silica sand but Zeobrite® has properties that permit a higher quality of filtration. Zeobrite® has over 100 times the surface area of silica sand. It is a microporous media with millions of small pore spaces for entrapment of contaminant particle size from silt to colloids. The Zeobrite® granules are hard enough to last several years (recommended 4 to 5 years ) in a high-rate pressurized system with up to 20 gpm/ft2 backwash rate.