{"id":7236,"date":"2026-09-11T18:11:12","date_gmt":"2026-09-11T15:11:12","guid":{"rendered":"https:\/\/filtredeau.com\/product\/%d8%b4%d9%85%d8%b9%d8%a9-%d8%aa%d8%a7%d9%86%d9%83-%d8%a8%d8%b1%d9%88-%d8%a3%d8%b1-%d8%a3%d9%88-ro-%d8%ba%d8%b4%d8%a7%d8%a1-%d8%a7%d9%84%d8%aa%d9%86%d8%a7%d8%b6%d8%ad-%d8%a7%d9%84%d8%b9\/"},"modified":"2026-09-25T19:02:42","modified_gmt":"2026-09-25T16:02:42","slug":"%d8%b4%d9%85%d8%b9%d8%a9-%d8%aa%d8%a7%d9%86%d9%83-%d8%a8%d8%b1%d9%88-%d8%a3%d8%b1-%d8%a3%d9%88-ro-%d8%ba%d8%b4%d8%a7%d8%a1-%d8%a7%d9%84%d8%aa%d9%86%d8%a7%d8%b6%d8%ad-%d8%a7%d9%84%d8%b9","status":"publish","type":"product","link":"https:\/\/filtredeau.com\/en\/product\/%d8%b4%d9%85%d8%b9%d8%a9-%d8%aa%d8%a7%d9%86%d9%83-%d8%a8%d8%b1%d9%88-%d8%a3%d8%b1-%d8%a3%d9%88-ro-%d8%ba%d8%b4%d8%a7%d8%a1-%d8%a7%d9%84%d8%aa%d9%86%d8%a7%d8%b6%d8%ad-%d8%a7%d9%84%d8%b9\/","title":{"rendered":"Tank Pro RO cartridge \u2014 RO (reverse-osmosis membrane)"},"content":{"rendered":"<h2>What does the RO membrane do?<\/h2>\n<ul>\n<li>It retains 99.9% of bacteria.<\/li>\n<li>It retains 99.9% of viruses.<\/li>\n<li>It reduces heavy metals and dissolved salts \u2014 what gives water a salty taste and leaves limescale.<\/li>\n<\/ul>\n<p>This is the only component in the filter able to deal with the salinity and hardness of the water; the other cartridges only handle taste, odour and impurities.<\/p>\n<h2>When should it be changed?<\/h2>\n<p>Every 12 to 18 months depending on the water quality in your city: the more salts there are, the shorter its life. 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