Heavy Duty Depth Filtration, Weight: 200 Grams/Pc. 2.5 inches diameters, 20″ inches lengths. Spun Bonded Cartridge filters are manufactured through a process that thermally bonds pure Polypropylene microfibers with lower density at the outside surface and progressively higher density toward the center. Spun Bonded Cartridges are used either as a pre-filter or final filter for food/beverage or water purification applications. Spun polypropylene cartridges offer superior sediment reduction. The thermally bonded polypropylene cartridge utilizes the entire depth of its media to effectively trap suspended particles, providing filtration efficiency and consistent flow rate. Using non-toxic and tasteless polypropylene particles, through heating melting, spinning, traction, acceptance made of tubular filter if raw material polypropylene-based. Spray solution can be called PP filter not only purify large quantities of water use also has excellent chemical compatibility, suitable for acids, alkalis and organic solvents filtering. Dirt holding capacity, long life, and low cost.