The life of the filter cartridge will vary depending on the raw materials used. As the use time prolongs, impurities in the water will clog the filter element, and the activated carbon filter will absorb saturation. Therefore, in general, the PP filter cartridge needs to be replaced in 3 months, and the activated carbon filter cartridge needs to be replaced in 6 months. Because hollow fiber can not be cleaned, it is generally placed at the back end of PP cotton and activated carbon. Otherwise, it is easy to block. As the end of the water purification equipment, it needs to be replaced in 1-2 years. Ceramic filter cartridges can generally be used for 10-12 months, and good ceramic filter cartridges can be used for 3-5 years or even longer.