There are some differences between RO filter and PCB filter in terms of filtration principle, filter purpose, filtration effect, and service life. 1. Filtering principle: The PCB filter element mainly uses activated carbon as the filtering medium to remove residual chlorine, odors, colors, organic pollutants, etc. from water through physical adsorption and chemical reactions. The RO filter element uses reverse osmosis membrane as the core filtration medium, and through the separation process of semi permeable membrane, most of the dissolved solids, heavy metals, microorganisms, bacteria, viruses, etc. in water are removed. 2. Application of filter element: PCB filter element is mainly used in drinking water filtration systems, household water treatment equipment, faucet filters, etc., to improve water quality, remove odors, and provide a cleaner water source. RO filters are applied in scenarios with higher water quality requirements, such as pure water manufacturing, industrial water treatment, etc. 3. Filtering effect: PCB filter can effectively remove residual chlorine, odors, and organic pollutants from water, improving the taste and appearance of water quality. RO filter can more thoroughly remove dissolved solids, heavy metals, microorganisms, etc. in water, providing a purer water source. 4. Service life: The service life of PCB filter cartridges and RO filter cartridges is usually determined by the amount of filtered material and filtration efficiency. Generally speaking, the service life of PCB filters is shorter than that of RO filters, as their filtration capacity gradually decreases over time. The RO filter element, due to its efficient filtering ability, has a relatively long usage time.