Crotomak Presents High Grade Polypropylene Spun Filter For All RO Water Purifiers 10 Inch - 5 Micron with Ultra Filteration Technology Which makes you feel a luxurious of good living . How It Works : Spin-down filters use centrifugal force to eliminate sediment from water. Water enters the top of a spin down filter and is diverted into a clear chamber where the water is spun around. The heavier sediment is flung to the outside of the housing by centrifugal force before settling at the bottom of the chamber. Maintaining your sediment filter helps in staining out sediment, dirt, and slit.