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The membrane is the main purification filter of reverse osmosis water filters. This filter is a reverse osmosis element. The function of the membrane is to remove harmful microorganisms, viruses, and heavy metals from the water. Therefore, the membrane is considered the most important filter. Membrane is also called primary filter and main filter. The pore size of the membrane is 5-7 angstroms (1 angstrom = 0.000001 mm)

The service life of membranes is 2 years. However, the content of this water can vary depending on the state of pollution. (eg: ground water, well water, mains water, sulfur water).