Reverse Osmosis

RO filters are so important when it comes to keeping water healthy. If you’re looking for a way to keep contaminants such as: heavy metals, microplastics, and bacteria out of your drinking water, then reverse osmosis filters are the way to go. They filter water to its purest possible form. Plus, on top of getting safe water, you’ll get nice and tasty drinking water too.

Interested in healthier and safer drinking water? Take a look at our range of Brita Compatible Filters to keep your drinking water in tip top shape.

We also have a range of RO filters that can be used in aquariums to keep your ecosystem healthy and functioning optimally too. Tanks and ponds often get a build up of algae which can be damaging to your fish. This is where RO units and other filtering systems come in. Adding one of these units to your tank will save you a lot of trouble, time, and money in the long run and prevent you from having to spend extra money on additives and treatment to get rid of algae build up.

To browse our wide range of RO filters, including: a collection of 10" RO Filters and 20" RO filters and RO Membranes, please take a look at some of the categories below. As always, if you have a few questions about our products or are unsure of what products to choose, please feel free to give us a call on 0151 261 9207. Our team will be happy to answer any questions you may have.

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  1. 200gpd Reverse Osmosis RO FCS Membrane TFC Filter for RO Unit

    You are purchasing a Vontron 200gpd (gallon per day) reverse osmosis membrane. The model number for this membrane is ULP2812

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  2. 400gpd Reverse Osmosis RO FCS Membrane TFC Filter for RO Unit

    You are purchasing a FCS 400gpd (gallon per day) reverse osmosis membrane. The model number for this membrane is RT3012-400.

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  3. 10" Ceramic Water Filter Cartridge Element Undersink Pure Water

    The Finest Filters ceramic water filter cartridges are a 10 inch filter to fit all standard filter housings. The filter catridge measures 10 inches long and 2.5 inches wide.

    This ceramic filter will filter down to 0.5 microns and is a very effective filter often used in undersink filter systems.

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  4. 2 x 3.25" - 3.25" RO Membrane Housing Clips

    2 pack of RO Membrane Housing Clips for securely attaching two wider (200gpd - 400gpd) Membrane Housings together.
    Ideal for use with dual Membranes.

    Extremely durable and hardwearing.

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  5. 2 x 200-400gpd RO Membrane Housing Mounting Clips

    2 pack of 3.25" RO Membrane Housing Mounting Clips. 

    Suitable for screwing wider 200gpd – 400gpd Membrane Housings to a wall or structure.

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  6. 2 x 3.25" - 1.75" RO Filter Housing Clips

    2 pack of 3.25" - 1.75" RO Filter Housing Clips. Suitable for connecting smaller inline filters (such as T33 Carbon Filters) to 200 - 400gpd Membrane Housings.

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  7. 10" Jumbo Granulated Activated Carbon GAC Filter (4.5" Diameter)

    Finest Filters 10” Jumbo (4.5” Wide) granulated carbon (GAC) filter cartridge. A suitable replacement for all larger diameter housings. Commonly referred to as ‘big blue’ housings.

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  8. 10" Jumbo Sediment and Carbon Block Pre Filters Set (4.5" Diameter)

    Finest Filters 10” Jumbo (4.5” Wide) filter set (1 x 5 Micron Sediment, 1 x Carbon Block Filter). A suitable replacement for all larger diameter housings. Commonly referred to as ‘big blue’ housings.

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  9. 20" Reverse Osmosis RO Jumbo Sediment Filter (4.5" Diameter)

    A suitable replacement for all larger diameter housings. Commonly referred to as ‘big blue’ housings. This filter cartridge will filter sediments down to 5 micron in size.

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  10. 20" Reverse Osmosis RO Jumbo Carbon Block Filter (4.5" Diameter)

    Finest Filters 20” Jumbo (4.5” Wide) carbon block filter cartridge. A suitable replacement for all larger diameter housings. Commonly referred to as ‘big blue’ housings. This filter cartridge reduces levels of Chlorine up to 99%, Organic Compounds and Volatile Organic Compounds (VOCs).

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  11. 10" Jumbo Granular Activated Carbon GAC Filter (4.5" Diameter)

    Finest Filters 20” Jumbo (4.5” Wide) granulated carbon (GAC) filter cartridge. A suitable replacement for all larger diameter housings. Commonly referred to as ‘big blue’ housings.

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  12. 20" Jumbo Sediment and Carbon Block Pre Filters Set (4.5" Diameter)

    Finest Filters 20” Jumbo (4.5” Wide) filter set (1 x 5 Micron Sediment, 1 x Carbon Block Filter). A suitable replacement for all larger diameter housings. Commonly referred to as ‘big blue’ housings.

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  13. 20" Jumbo Sediment, Carbon Block & GAC Set (4.5" Diameter)

    Finest Filters 20” Jumbo (4.5” Wide) filter set (1 x 5 Micron Sediment, 1 x Carbon Block Filter). A suitable replacement for all larger diameter housings. Commonly referred to as ‘big blue’ housings.

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  14. 20” Jumbo Reverse Osmosis Double Housing Set With 1” Brass Ports, Bracket & Spanner

    Finest Filters 20” Jumbo Double Housing with 1” Brass Ports and Bracket

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  15. 20” Jumbo Reverse Osmosis Triple Housing Set With 1” Brass Ports, Bracket & Spanner

    Finest Filters 20” Jumbo Triple Housing with 1” Brass Ports and Bracket

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  16. Replacement Flush Valve Flow Restrictor Assembly for Reverse Osmosis RO Unit

    This is a complete replacement flush valve flow restrictor assembly for use with any RO unit using standard ¼” pipe. This assembly is installed on the waste water line on the RO unit and allows the membrane to be backflushed to prolong its life.

    The flow restrictor is available as either 300cc, 400cc, 550cc or 800cc. Please see our recommendation for which restrictor to use depending on the size of the membrane in your system.

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    As low as £7.99
  17. Pack Of 4 Replacement Filter Foams For Blue Ended Inline Resin Holder

    Pack of 4 replacement filter foams suitable for the 10" Blue Ended resin holder filter housing.

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  18. 10" Reverse Osmosis RO Jumbo Sediment Filter (4.5" Diameter)

    Finest Filters 10” Jumbo (4.5” Wide) sediment filter. A suitable replacement for all larger diameter housings. Commonly referred to as ‘big blue’ housings. This filter cartridge will filter sediments down to 5 micron in size.

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  19. 10" Reverse Osmosis RO Jumbo Carbon Block Filter (4.5" Diameter)

    Finest Filters 10” Jumbo (4.5” Wide) carbon block filter cartridge. A suitable replacement for all larger diameter housings.

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  20. 20” Jumbo Reverse Osmosis Single Housing Set With 1” Ports & Spanner

    Finest Filters 20” Jumbo Single Housing with 1” Ports and Spanner

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  21. Pack Of 4 Replacement Filter Foams For Reverse Osmosis Resin Holder

    Pack of 4 replacement filter foams for our 10" Reverse Osmosis resin holder.

    These replacement foams can prevent the need to purchase a complete resin holder if replacement sponges are required.

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  22. 3 Stage 20" HMA Unit for Heavy Metal Reduction

    Finest-Filters 20" Complete HMA unit. Ideal for chlorine and heavy metal removal for water being used in aquariums and ponds.

     
    These larger 20" filter units have a much higher capacity and throughflow than our standard 10" HMA unit, and are an ideal choice for applications where a higher flow rate of filtered HMA water is required.
     
     
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  23. 300cc Automatic Flush Valve Reverse Osmosis RO Unit Restrictor 24V

    The 300cc automatic flush valve is a replacement reverse osmosis spare part. It can be used in your unit to replace a combined manual flush and waste restrictor valve, or a current automatic flush valve.

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  24. 10" Jumbo Sediment, Carbon Block & GAC Set (4.5" Diameter)

    Finest Filters 10” Jumbo (4.5” Wide) filter set (1 x 5 Micron Sediment, 1 x Carbon Block Filter, 1 x GAC (Granular Activated Carbon)). A suitable replacement for all larger diameter housings. Commonly referred to as ‘big blue’ housings.

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  25. 20 Pack of 1/4" Locking Safety Clips / Collets for RO fittings

    Pack of 20 x replacement 1/4" locking collet clips. These can be used with all 1/4" RO pipe fittings. Using these locking clips will prevent the pipe from accidentally being removed by mistake during use. A locking collet clip should be used on every fitting. Safety first!

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