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Refurbished RO systems
Tested and inspected RO systems for pure water at a reduced price.
See offersRO system + water softener pack
Complete protection with an RO system and a water softener.
Get 15% offRO system + hydrogen water generator pack
Combine reverse osmosis water and hydrogen-rich water.
Get 15% off
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On orders of €150 or more within mainland France 
(home products only)
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+33 3 66 88 17 85
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9:30 am–5 pm (Paris time)!
Email: contact@josmose.fr
400GPD Bayonet Membrane for Ultimos RO System
Bayonet Cartridges
Role of the RO membrane
The RO membrane is made of TFC (Thin-Film Composite) polyamide and represents the most advanced stage of water filtration. It removes heavy metals, bacteria, and viruses. The pores in an RO membrane are so small that they only allow water molecules (H2O) to pass through. The 2 pre-filters are there solely to make the membrane's job easier by trapping larger particles. This helps extend its life.
Want to learn more about how reverse osmosis works? Click here.
Capacity
The 400GPD membrane is intended exclusively for use in a direct-flow RO system with a bayonet system, such as our UltimOs.
Maintenance
An RO membrane should be replaced every two years on average. Replacement takes 5 seconds, timed by the clock.
Maximize your savings by purchasing maintenance kits for 2 or 4 years.

