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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Vontron ULP21 4040 Reverse Osmosis RO Membrane and Steel Housing Kit£289.99Vontron ULP21 4040 RO Membrane and WWH4040 stainless steel membrane housing set. Widely used for the filtration of water used by window cleaners to ensure spot free window cleaning finish!
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50gpd Reverse Osmosis RO Membrane£17.99You 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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75gpd Reverse Osmosis RO Membrane£20.99You 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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100gpd Reverse Osmosis RO Membrane£24.99You 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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JCM 150gpd Reverse Osmosis RO Membrane£29.99FCS 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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200gpd Reverse Osmosis RO FCS Membrane TFC Filter for RO Unit£39.99You are purchasing a Vontron 200gpd (gallon per day) reverse osmosis membrane. The model number for this membrane is ULP2812
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Vontron 300gpd RO Membrane£59.99Vontron 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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400gpd Reverse Osmosis RO FCS Membrane TFC Filter for RO Unit£59.99You are purchasing a FCS 400gpd (gallon per day) reverse osmosis membrane. The model number for this membrane is RT3012-400.
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Vontron ULP21-4021 Commercial 21" Reverse Osmosis RO Membrane£169.99You 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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Vontron ULP21 4040 Commercial 2400gpd Reverse Osmosis RO Membrane£209.99You 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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