AquaPro PP Spun sediment filter is made of fine melted polypropylene, which is blown and spun in a cylinder-like form. The main function of sediment filter is to remove large and fine particles from a drinking water, such as sand, dirt, silt, and rust particles. Each cartridge is individually shrink-wrapped. AquaPro PP Spun Filter Cartridge is made up of 100% polypropylene fibers. The fibers have been carefully spun together to form a true gradient density from outer to the inner surface. Filter cartridges are available with core & without core version. The superior structure remains integral even under severe operating conditions and there is no media migration. Polypropylene fibers are blown continuously on central molded core, without any binders, resins or lubricants.