Reverse Osmosis Membranes

Reverse Osmosis Membranes

Find reverse osmosis membranes for use with your RO system at Finest Filters. Reverse osmosis (RO) is a process that’s designed to remove contaminants from water by using pressure to push the water through a semi-permeable membrane. The RO membranes you’ll find in our collection are used in window cleaning, as well as in aquatics. Discover the right RO membrane for your needs today. 

Our reverse osmosis membranes come with a gpd (gallon per day) rating, giving you an idea of how much water can be filtered each day with the model you choose. You’ll find RO membranes with a wide range of gpd capabilities in our collection, including models from well-known brands like JCM, Vontron, and Spectrum.

One of the most powerful models we stock is the 4040 RO membrane from Vontron - the brand’s ULP21 4040 Commercial 2400gpd Reverse Osmosis Membrane is capable of producing 2,400 gallons of product water each day. Another fantastic model for window cleaners is the Spectrum 4040 RO Membrane WW-4040, which has a rejection rate of 98.5% and is designed to ensure a spot-free finish.

An RO membrane should be replaced when the level of total dissolved solids (TDS) starts to rise in the ‘filtered’ water. Keep an eye on the levels you’re seeing and make sure you have a stock of spare RO membranes on hand. 

Whether you’re a window cleaner or a fish tank owner, you’ll find an RO membrane that’s right for you in our collection. Shop our full collection of RO units, RO booster pumps, and more.

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  1. under sink tankless reverse osmosis unit 600gpd
    600gpd Tankless Reverse Osmosis RO Unit With Faucet
    Now £269.99 Was £329.99

    Our Tankless 600GPD Compact 5-Stage Filtration Reverse Osmosis Unit is an excellent solution for pure, clean water directly from your kitchen tap. Designed with multi-stage filtration technology and compact convenience in mind, this system brings you unparalleled filtration power without the need for bulky water storage tanks.

    5 Stage Filtration

    High Capacity Flow Rate

    Digital Display Faucet

    Easy Installation

    Eco-Friendly & Economical

    Tankless Compact Design

     

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  2. 50gpd Reverse Osmosis RO Membrane
    50gpd Reverse Osmosis RO Membrane
    £17.99

    You are purchasing a high quality 50gpd (gallon per day) reverse osmosis membrane.

    These quality membranes are suitable for all reverse osmosis systems, and should be replaced when the total dissolved solids (TDS) starts to rise in the product water.

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  3. 75gpd Reverse Osmosis RO Membrane
    75gpd Reverse Osmosis RO Membrane
    £20.99

    You are purchasing a high quality 75gpd (gallon per day) reverse osmosis membrane.

    These quality membranes are suitable for all reverse osmosis systems, and should be replaced when the total dissolved solids (TDS) starts to rise in the product water.

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  4. 100gpd Reverse Osmosis RO Membrane
    100gpd Reverse Osmosis RO Membrane
    £24.99

    You are purchasing a high quality 100gpd (gallon per day) reverse osmosis membrane.

    These quality membranes are suitable for all reverse osmosis systems, and should be replaced when the total dissolved solids (TDS) starts to rise in the product water.

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  5. 150gpd Reverse Osmosis RO Membrane
    150gpd Reverse Osmosis RO Membrane
    £27.99
    Out of stock

    You are purchasing a high quality 150gpd (gallon per day) reverse osmosis membrane.

    These quality membranes are suitable for all reverse osmosis systems, and should be replaced when the total dissolved solids (TDS) starts to rise in the product water.

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  6. JCM 150gpd Reverse Osmosis RO Membrane
    JCM 150gpd Reverse Osmosis RO Membrane
    £29.99

    FCS 150gpd replacement reverse osmosis RO membrane. The model number for this membrane is: GT-2012-150.

    These quality membranes are suitable for all reverse osmosis systems, and should be replaced when the total dissolved solids (TDS) starts to rise in the product water.

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  7. Vontron 300gpd RO Membrane
    Vontron 300gpd RO Membrane
    £59.99

    Vontron replacement 300gpd reverse osmosis RO membrane element, for use in most types of reverse osmosis water filters.

    This is an ultra-low-pressure membrane (ULP in the model code). This means this membrane is optimised to work on residential water supplies where the water pressure is usually lower.

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  8. Vontron ULP21-4021 Commercial 21" Reverse Osmosis RO Membrane
    Vontron ULP21-4021 Commercial 21" Reverse Osmosis RO Membrane
    £169.99

    You are purchasing a Vontron ULP21-4021 21inch Commercial Reverse Osmosis RO Membrane.

    This membrane is capable of producing 950 gallons of product water per day, and is ideal for Window Cleaning applications, along with Aquatics.

    Working under the conditions of ultra low operating pressure, ULP membrane series can achieve as high permeated flow and rejection rate as regular low-pressure membranes can, it runs under approximately two thirds pressure of that regular low pressure compound membranes, and can achieve a rejection rate of as high as 99%.

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  9. Vontron ULP21 4040 Commercial 2400gpd Reverse Osmosis RO Membrane
    Vontron ULP21 4040 Commercial 2400gpd Reverse Osmosis RO Membrane
    £209.99

    You are purchasing a Vontron ULP21-4040 40inch Commercial Reverse Osmosis RO Membrane.

    This membrane is capable of producing 2400 gallons of product water per day, and is ideal for Window Cleaning applications, along with Aquatics.

    Working under the conditions of ultra low operating pressure, ULP membrane series can achieve as high permeated flow and rejection rate as regular low-pressure membranes can, it runs under approximately two thirds pressure of that regular low pressure compound membranes, and can achieve a rejection rate of as high as 98%.

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  10. Spectrum 4040 Reverse Osmosis RO Membrane WW-4040
    Spectrum 4040 Reverse Osmosis RO Membrane WW-4040
    £199.99
    Out of stock

    Spectrum WW-4040 RO Low Pressure Membrane. Widely used for the filtration of water used by window cleaners to ensure spot free window cleaning finish!

    With rejection rates of 98.5% which outperforms many established pure water production membranes, while at the same time, beating entry level imported inferior alternatives on price and build quality.

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