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.

Items 1-100 of 144

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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

    Learn More
  2. 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.

    Learn More
  3. 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.

    Learn More
  4. 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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  5. 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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  6. 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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  7. 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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  8. 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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  9. 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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  10. 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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  11. 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.

    Learn More
  12. 20" 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.

    Learn More
  13. Flow Restrictor For Reverse Osmosis RO Unit 300 / 400 / 550 or 800cc

    Our replacement flow restrictors are suitable for use with any reverse osmosis system using ¼” push fit pipe.

    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.

    Learn More
    As low as £3.99
  14. E-Chen Self Regulating Reverse Osmosis RO Booster Pump With Transformer

    The E-Chen self-regulating booster pumps are a newer model pump which will automatically stabilise the outlet pressure at 70psi when the inlet pressure is between 10-40psi. The consistent output pressure gives the advantage of prolonged RO membrane life.

    We have these pumps available in 5 different models – 50gpd, 75gpd, 100gpd, 200gpd and 400gpd. Please select the model required from the drop down menu when ordering.

    Learn More
    As low as £59.99
  15. 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.

    Learn More
    As low as £7.99
  16. 1/4" Reverse Osmosis RO Tubing - Range of Colours and Sizes

    Finest Filters 1/4" Reverse Osmosis tubing is available in a range of 4 colours (White, Black, Blue and Red). Typically using different coloured tubing allows for easy distinguishing of product and waste water lines in a RO unit setup. Please select the colour and length required from the drop down menu when ordering.

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    As low as £4.39
  17. 4 Stage Reverse Osmosis Unit with Booster Pump and DI Stage 50-100gpd
    Rating:
    96 % of 100

    The Finest-Filters 4 stage RO unit with booster pump is ideal for ultra pure water production in a range of applications, and especially in situations where the water pressure is too low for effective water production rate from an un-pumped system. This is a very advanced RO unit, with a built in booster pump, automatic membrane back flush, pressure gauge, high pressure and low pressure switch.

    Learn More
    As low as £139.99
  18. Ista Auto Top Off Float Valve

    Ista Auto Top Off Valve acts as a ballcock device that cuts the water flow off when the water in a container fills to a point that the float valve is raised.

    These are incredibly handy with auto top off units (ATO’s) and when producing purified water such as Reverse Osmosis (RO).  

    The fitting these come with is a ¼” John Guest (push fit) connection which easily connects the standard ¼” RO / High Pressure tubing.

     

    The Ista Float Valve can be installed via a drilled hole in the container or via the hang-on bracket supplied. The float valves themselves are adjustable making them adaptable for most applications.

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  19. Compact Reverse Osmosis RO Unit DI Deionisation Add On Stage

    You are purchasing a add on De-ionisation kit for addition to any compact reverse osmosis unit.

    This extra filter stage will convert any 3 stage unit into a 4 stage unit, and the de-ionisation resin will reduce the TDS (total dissolved solids) within the product water further, resulting in ultra pure RO water.

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  20. 20" Sediment Pre Filter (5 Micron)

    You are purchasing a 20" Reverse Osmosis sediment filter (5 Micron).

    Important - Please Note: These are 20" filter cartridges and not 10" which is used on standard residential RO units. If you have a small residential unit, please see our 10" filters in our eBay shop.

    Learn More
  21. 1 x 10" Reverse Osmosis RO Sediment Filter

    Our high quality spun-bonded polypropylene sediment filters are an ideal single use Reverse Osmosis cartridge offering the best all round sediment filtration.

    Available in 1 and 5 Micron ratings, Finest Filters will have a sediment filter to suit your Reverse Osmosis unit.

    Quantity you are purchasing: 1 Sediment Filter

    Micron Rating of cartridge: Please select Micron Rating from the Drop-Down Menu.

    Learn More
    As low as £3.19
  22. 50gpd Reverse Osmosis RO Membrane

    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.

    Learn More
  23. 50gpd Reverse Osmosis RO Booster Pump

    You are purchasing a high quality 50gpd Reverse Osmosis / RO booster pump.

    This pump comes complete with 2 x 1/4" push fittings, allowing a simple push fit connection into this unit, meaning addition to any existing RO unit is easy. This unit is also supplied complete with transformer

    Learn More
  24. 3 x Brita Maxtra+ Plus Compatible Filter Cartridges

    Finest Filters universal water jug replacement filter cartridges compatible with Brita Maxtra+ (Plus) filter jugs.

    You are purchasing a pack of 3 x compatible filter cartridges.

    These filter cartridges are the newer Maxtra Plus model which is a new and upgraded model to the standard Maxtra filters. Please see full product description for full details.

    Learn More
  25. Handheld TDS / Temperature Meter

    Our Handheld TDS meters are ideal for determining the Total Dissolved Solids within your RO water, priod to adding it to your aquarium.

    TDS Meters quickly allow you to determine when your Reverse Osmosis Membrane / DI Resin requires changing.

    It is recommended to monitor the quality of your RO Water using our handheld TDS meter.

    Learn More
  26. Chrome Narrow In Line Shower Filter for Chlorine and Heavy Metal Removal

    You are purchasing a high quality In Line chrome shower filter.

    These quality filters contain KDF and Activated Carbon filter media, which removes Chlorine and Heavy Metals from the water.

    Learn More
  27. 50gpd Additional Membrane Upgrade Kit

    You are purchasing a high quality 50gpd additional membrane kit for use with existing RO units.

    Adding an additional membrane to your set up can reduce the amount of waste water - as waste water from the current membrane is passed through another membrane. This will reduce the waste water from your RO unit - which is ideal for saving money if you are on a water meter, or wish to produce RO water quicker.

    Learn More
  28. 1/4" Straight Connector Push Fit RO Fitting

    You are purchasing a 1/4" x 1/4" Push Fit Straight Connector suitable for use with American style fridges and reverse osmosis plumbing. These push fittings are suitable for use with 1/4" push fit pipe, and we have a wide range of fittings available.

    Learn More
  29. 10" Reverse Osmosis Filter Housing with 1/4" Connectors

    Finest Filters 10" Reverse Osmosis housings are suitable for use with Sediment, Carbon or Deionisation filters.

    Our housings can be retro fitted to an existing reverse osmosis installation, or can be used to replace a broken housing.

    This housing comes complete with two connectors to allow 1/4" push fit hosing to be easily inserted, for quick connection.

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  30. 2 x InLine T33 Carbon Drinking Water / Fridge Filter Cartridges
    Rating:
    100 % of 100

    You are purchasing a pack of 2 In Line T33 Fridge Filters - used as a replacement filter for many common models of American Style fridges.

    These filters contain the best quality Calgon carbon, which removes taste and odour from the water.

    Our filters come complete with 1/4" push fit fittings on each end, allowing easy connection to any 1/4" pipe.

    It is recommended to change the filter every 6 months.

    Learn More
  31. 50gpd 4 Stage Complete RO Reverse Osmosis Unit
    Rating:
    90 % of 100

    You are purchasing a high quality Finest Filters 4 stage Reverse Osmosis RO Unit. Complete with all filters and all accessories.

    This unit is supplied with a 50gpd (gallon per day) membrane. We also sell units supplied with 75gpd and 100gpd membranes.

    Our 4 stage units have a DI chamber, which is supplied filled with high quality DI Resin. After passing through the membrane, the filtered water is passed through the DI resin, to reduce the Total Dissolved Solids to 0.

    Complete with waste water clamp valve, and also a self piercing feed valve to connect to 15mm copper pipe.

    Learn More
  32. HMA 10" Filter Cartridge Set for Heavy Metal Reduction including KDF/GAC Filter

    You are purchasing a replacement set of HMA filter cartridges, suitable for all HMA filter units that accommodate 10" filters.

    This kit contains 1 x sediment filter (5 Micron), 1 x carbon block filter, and 1 x KDF/GAC filter cartridge.

    Learn More
  33. White Narrow In Line Shower Filter for Chlorine and Heavy Metal Removal

    You are purchasing a high quality In Line white shower filter.

    These quality filters contain KDF and Activated Carbon filter media, which removes Chlorine and Heavy Metals from the water.

    Learn More
  34. 75gpd 4 Stage Complete RO Reverse Osmosis Unit

    You are purchasing a high quality Finest Filters 4 stage Reverse Osmosis RO Unit. Complete with all filters and all accessories.

    This unit is supplied with a 75gpd (gallon per day) membrane. We also sell units supplied with 50gpd and 100gpd membranes.

    Our 4 stage units have a DI chamber, which is supplied filled with high quality DI Resin. After passing through the membrane, the filtered water is passed through the DI resin, to reduce the Total Dissolved Solids to 0.

    Complete with waste water clamp valve, and also a self piercing feed valve to connect to 15mm copper pipe.

    Learn More
  35. 10" White Reverse Osmosis Filter Housing

    Finest Filters Reverse Osmosis Housings can be used with any filter blocks, such as Sediment, Carbon block, GAC etc. If you require a De-ionisation chamber, we sell refillable resin holders which fit inside these housings.

    This housing comes complete with two screw in connectors, with a choice of 1/4" or 3/8" connectors. Please select the required option when ordering.

    Learn More
    As low as £10.49
  36. 75gpd Reverse Osmosis RO Booster Pump

    You are purchasing a high quality 75gpd Reverse Osmosis / RO booster pump.

    This pump comes complete with 2 x 1/4" push fittings, allowing a simple push fit connection into this unit, meaning addition to any existing RO unit is easy. This unit is also supplied complete with transformer

    Learn More
  37. 75gpd Additional Membrane Upgrade Kit

    You are purchasing a high quality 75gpd additional membrane kit for use with existing RO units.

    Adding an additional membrane to your set up can reduce the amount of waste water - as waste water from the current membrane is passed through another membrane. This will reduce the waste water from your RO unit - which is ideal for saving money if you are on a water meter, or wish to produce RO water quicker.

    Learn More
  38. 3 x Brita Maxtra Compatible Filter Cartridges

    Finest Filters universal water jug replacement filter cartridges compatible with Brita Maxtra filter jugs.

    You are purchasing 3 x compatible filter cartridges.

    PLEASE NOTE: These are the original Maxtra version, not the Maxtra+. Please check the version you need before ordering. We also have the Maxtra+ available HERE.

    Learn More
  39. 75gpd Reverse Osmosis RO Membrane

    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.

    Learn More
  40. 3 x 10" Reverse Osmosis RO Sediment Filters

    Our high quality spun-bonded polypropylene sediment filters are an ideal single use Reverse Osmosis cartridge offering the best all round sediment filtration.

    Available in 1 and 5 Micron ratings, Finest-Filters will have a sediment filter to suit your Reverse Osmosis unit.

    Quantity you are purchasing: 3 Sediment Filters

    Micron Rating of cartridge: Please select Micron Rating from the Drop-Down Menu.

    Learn More
    As low as £5.99
  41. 3 x 20" Sediment Pre Filters (5 Micron)

    You are purchasing a pack of 3 x 20" Reverse Osmosis sediment filter (5 Micron).

    Important - Please Note: These are 20" filter cartridges and not 10" which is used on standard residential RO units. If you have a small residential unit, please see our 10" filters in our eBay shop.

    Learn More
  42. 6 x Brita Maxtra+ Plus Compatible Filter Cartridges

    Finest Filters universal water jug replacement filter cartridges compatible with Brita Maxtra+ (Plus) filter jugs.

    You are purchasing a pack of 6 x compatible filter cartridges.

    These filter cartridges are the newer Maxtra Plus model which is a new and upgraded model to the standard Maxtra filters. Please see full product description for full details.

    Learn More
  43. 5 x InLine T33 Carbon Drinking Water / Fridge Filter Cartridges
    Rating:
    100 % of 100

    You are purchasing a pack of 5 In Line T33 Fridge Filters - used as a replacement filter for many common models of American Style fridges.

    These filters contain the best quality Calgon carbon, which removes taste and odour from the water.

    Our filters come complete with 1/4" push fit fittings on each end, allowing easy connection to any 1/4" pipe.

    It is recommended to change the filter every 6 months.

    Learn More
  44. Replacement Filter Cartridge for Chrome and White Narrow In Line Shower Filter

    You are purchasing a replacement filter cartridge to fit our narrow chrome and white shower filters.

    These quality filters contain KDF and Activated Carbon filter media, which removes Chlorine and Heavy Metals from the water.

    These cartridges will last for 1 Year, or 10,000 gallons of water.

    Learn More
  45. 100gpd Reverse Osmosis RO Membrane

    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.

    Learn More
  46. 5 x 10" Reverse Osmosis RO Sediment Filters

    Our high quality spun-bonded polypropylene sediment filters are an ideal single use Reverse Osmosis cartridge offering the best all round sediment filtration.

    Available in 1 and 5 Micron ratings, Finest Filters will have a sediment filter to suit your Reverse Osmosis unit.

    Quantity you are purchasing: 5 Sediment Filters

    Micron Rating of cartridge: Please select Micron Rating from the Drop-Down Menu.

    Learn More
    As low as £9.99
  47. 100gpd Additional Membrane Upgrade Kit

    You are purchasing a high quality 100gpd additional membrane kit for use with existing RO units.

    Adding an additional membrane to your set up can reduce the amount of waste water - as waste water from the current membrane is passed through another membrane. This will reduce the waste water from your RO unit - which is ideal for saving money if you are on a water meter, or wish to produce RO water quicker.

    Learn More
  48. 10 x InLine T33 Carbon Drinking Water / Fridge Filter Cartridges

    You are purchasing a pack of 10 In Line T33 Fridge Filters - used as a replacement filter for many common models of American Style fridges.

    These filters contain the best quality Calgon carbon, which removes taste and odour from the water.

    Our filters come complete with 1/4" push fit fittings on each end, allowing easy connection to any 1/4" pipe.

    It is recommended to change the filter every 6 months.

    Learn More
  49. 9 x Brita Maxtra+ Plus Compatible Filter Cartridges

    Finest Filters universal water jug replacement filter cartridges compatible with Brita Maxtra+ (Plus) filter jugs.

    You are purchasing a pack of 9 x compatible filter cartridges.

    These filter cartridges are the newer Maxtra Plus model which is a new and upgraded model to the standard Maxtra filters. Please see full product description for full details.

    Learn More
  50. 3 Stage (Sediment, Carbon Block and Membrane) Replacement RO Filter Set

    You are purchasing a Finest Filters replacement filter cartridge set suitable for all RO units that take 10" standard filters.

    This filter set includes 1 x 5 micron sediment filter, 1 x carbon block filter and 1 x RO Membrane

    Learn More
    As low as £21.99
  51. RO Reverse Osmosis Membrane Housing Complete WIth All Fittings And Spanner

    You are purchasing a high quality Reverse Osmosis Membrane housing, complete with all fittings and housing spanner.

    This membrane housing will fit all standard sized membranes, (36gpd, 50gpd, 75gpd, 100gpd, 150gpd etc).

    Learn More
  52. 5 x 20" Sediment Pre Filters (5 Micron)

    You are purchasing a pack of 5 x 20" Reverse Osmosis sediment filter (5 Micron).

    Important - Please Note: These are 20" filter cartridges and not 10" which is used on standard residential RO units. If you have a small residential unit, please see our 10" filters in our eBay shop.

    Learn More
  53. 1/4" Tee Piece Connector Push Fit RO Fitting

    You are purchasing a 1/4" x 1/4" x 1/4" Push Fit Tee Piece Connector suitable for use with American style fridges and reverse osmosis plumbing. These push fittings are suitable for use with 1/4" push fit pipe, and we have a wide range of fittings available.

    Learn More
  54. 100gpd 4 Stage Complete RO Reverse Osmosis Unit

    You are purchasing a high quality Finest Filters 4 stage Reverse Osmosis RO Unit. Complete with all filters and all accessories.

    This unit is supplied with a 100gpd (gallon per day) membrane. We also sell units supplied with 50gpd and 75gpd membranes.

    Our 4 stage units have a DI chamber, which is supplied filled with high quality DI Resin. After passing through the membrane, the filtered water is passed through the DI resin, to reduce the Total Dissolved Solids to 0.

    Complete with waste water clamp valve, and also a self piercing feed valve to connect to 15mm copper pipe.

    Learn More
  55. 100gpd Reverse Osmosis RO Booster Pump
    Rating:
    75 % of 100

    You are purchasing a high quality 100gpd Reverse Osmosis / RO booster pump.

    This pump comes complete with 2 x 1/4" push fittings, allowing a simple push fit connection into this unit, meaning addition to any existing RO unit is easy. This unit is also supplied complete with transformer

    Learn More
  56. 5m 1/4" Reverse Osmosis Tubing / Hosing

    You are purchasing a 5 metre length of 1/4" Reverse Osmosis Tubing / Hosing is suitable for RO Units, Fridges, Water Filters, Lab Equipment etc, which is white in colour.

    Suitable for all RO units which use 1/4" tubing

    Learn More

  57. 6 x Brita Maxtra Compatible Filter Cartridges

    Finest Filters universal water jug replacement filter cartridges compatible with Brita Maxtra filter jugs.

    You are purchasing 6 x compatible filter cartridges.

     

    PLEASE NOTE: These are the original Maxtra version, not the Maxtra+. Please check the version you need before ordering. We also have the Maxtra+ available HERE.

    Learn More
  58. 200gpd Self Regulating Reverse Osmosis RO Booster Pump

    You are purchasing a high quality 200gpd Reverse Osmosis / RO booster pump.

    This pump comes complete with 2 x 1/4" push fittings, allowing a simple push fit connection into this unit, meaning addition to any existing RO unit is easy. This unit is also supplied complete with transformer.

    Learn More
  59. 1 x 10" Reverse Osmosis RO Carbon Block Filter

    Our high quality Spectrum carbon block Reverse Osmosis cartridge are an ideal choice carbon block filter, delivering a genuine balance between chlorine absorption, high dirt-holding capacity and excellent value for money.

    Our Carbon Filter blocks are an ideal filter for your Reverse Osmosis Unit.

    Quantity you are purchasing: 1 Carbon Block Filter (10inch)

    Learn More
  60. 50gpd 3 Stage Compact Reverse Osmosis RO Unit

    You are purchasing a high quality Finest Filters 3 stage Compact Reverse Osmosis RO Unit. Complete with all filters and all accessories.

    This unit comes complete with a 50gpd (gallon per day) membrane.

    Our quality 3 stage compact RO units come with all accessories required for immediate setup, allowing you to product ultra pure RO water at home!

    Complete with waste water clamp valve, and also a self piercing feed valve to connect to 15mm copper pipe.

    Learn More
  61. JCM 150gpd Reverse Osmosis RO Membrane

    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.

    Learn More
  62. 1/4" Y Type Tee Piece Connector Push Fit RO Fitting

    You are purchasing a 1/4" x 1/4" x 1/4" Push Fit Y Type Tee Piece Connector suitable for use with American style fridges and reverse osmosis plumbing. These push fittings are suitable for use with 1/4" push fit pipe, and we have a wide range of fittings available.

    Learn More
  63. 2 x Screw Fit T33 Carbon Drinking Water / Fridge Filter Cartridges

    You are purchasing a pack of 2 screw fit (Compression fitting) T33 Fridge Filters - used as a replacement filter for many common models of American Style fridges.

    These filters contain the best quality Calgon carbon, which removes taste and odour from the water.

    Our filters come complete with 1/4" screw fittings (Compression fittings) on each end, allowing easy connection to any 1/4" pipe.

    It is recommended to change the filter every 6 months.

    Learn More
  64. 10 x 20" Sediment Pre Filters (5 Micron)

    You are purchasing a pack of 10 x 20" Reverse Osmosis sediment filter (5 Micron).

    Important - Please Note: These are 20" filter cartridges and not 10" which is used on standard residential RO units. If you have a small residential unit, please see our 10" filters in our eBay shop.

    Learn More
  65. 5 Litres Deionising (DI) Resin Pouch

    Our high quality Mixed Bed Tulsion DI Resin is ideal for ensuring 000TDS from your RO Unit.

    Suitable for all types of Reverse Osmosis filters / Deionising filters. Pure water is required for many application such as Aquariums, Window Cleaning etc.

    Quantity you are purchasing: 5000ml (5 litres).

    Learn More
  66. 2 x Replacement Filter Cartridges for Chrome and White Narrow In Line Shower Filter

    You are purchasing 2 x replacement filter cartridges to fit our narrow chrome and white shower filters.

    These quality filters contain KDF and Activated Carbon filter media, which removes Chlorine and Heavy Metals from the water.

    These cartridges will last for 1 Year each, or 10,000 gallons of water.

    Learn More
  67. 9 x Brita Maxtra Compatible Filter Cartridges

    Finest Filters universal water jug replacement filter cartridges compatible with Brita Maxtra filter jugs.

    You are purchasing 9 x compatible filter cartridges.

     

    PLEASE NOTE: These are the original Maxtra version, not the Maxtra+. Please check the version you need before ordering. We also have the Maxtra+ available HERE.

    Learn More
  68. Refillable DI Resin Container (For 10" Housings)

    Finest-Filters DI Resin holders can hold any granulated filter media such as Activated Carbon or DI Resin.

    This cartridge can simply fit inside an unused RO pod on your Reverse Osmosis unit if you have one free, or if not, a standard 10" housing will be required (Available Separately).

    Please note: There is no resin included with this container. DI Resin can be purchased here.

    Learn More
  69. 10m 1/4" Reverse Osmosis Tubing / Hosing

    You are purchasing a 10 metre length of 1/4" Reverse Osmosis Tubing / Hosing is suitable for RO Units, Fridges, Water Filters, Lab Equipment etc, which is white in colour.

    Suitable for all RO units which use 1/4" tubing

    Learn More

  70. 12 x Brita Maxtra+ Plus Compatible Filter Cartridges

    Finest Filters universal water jug replacement filter cartridges compatible with Brita Maxtra+ (Plus) filter jugs.

    You are purchasing a pack of 12 x compatible filter cartridges.

    These filter cartridges are the newer Maxtra Plus model which is a new and upgraded model to the standard Maxtra filters. Please see full product description for full details.

    Learn More
  71. 20" Carbon Block Filter Cartridge

    You are purchasing a 20" Reverse Osmosis carbon block filter cartridge.

    Important - Please Note: These are 20" filter cartridges and not 10" which is used on standard residential RO units. If you have a small residential unit, please see our 10" filters in our eBay shop.

    Learn More
  72. 4 x Replacement Filter Cartridges for Chrome and White Narrow In Line Shower Filter

    You are purchasing 4 x replacement filter cartridges to fit our narrow chrome and white shower filters.

    These quality filters contain KDF and Activated Carbon filter media, which removes Chlorine and Heavy Metals from the water.

    These cartridges will last for 1 Year each, or 10,000 gallons of water.

    Learn More
  73. 18 x Brita Maxtra+ Plus Compatible Filter Cartridges

    Finest Filters universal water jug replacement filter cartridges compatible with Brita Maxtra+ (Plus) filter jugs.

    You are purchasing a pack of 18 x compatible filter cartridges.

    These filter cartridges are the newer Maxtra Plus model which is a new and upgraded model to the standard Maxtra filters. Please see full product description for full details.

    Learn More
  74. 75gpd 3 Stage Compact Reverse Osmosis RO Unit

    You are purchasing a high quality Finest Filters 3 stage Compact Reverse Osmosis RO Unit. Complete with all filters and all accessories.

    This unit comes complete with a 75gpd (gallon per day) membrane.

    Our quality 3 stage compact RO units come with all accessories required for immediate setup, allowing you to product ultra pure RO water at home!

    Complete with waste water clamp valve, and also a self piercing feed valve to connect to 15mm copper pipe.

    Learn More
  75. Refillable InLine Filter Housing for DI Resin / Carbon

    Finest Filters Inline filter housings can hold any granulated filter media such as Activated Carbon or DI Resin.

    This cartridge is refillable, and comes complete with 1/4" straight fittings on each end for easy connection to standard 1/4" reverse osmosis tubing.

    This housing can be refilled and reused many times - saving you money on disposable cartridges!

    Learn More
  76. 1/4" Straight 1/2" BSP Screw Thread Connector Push Fit RO Fitting

    You are purchasing a 1/4" Push Fit Straight 1/2" BSP Screw Thread Connector suitable for use with American style fridges and reverse osmosis plumbing. These push fittings are suitable for use with 1/4" push fit pipe, and we have a wide range of fittings available.

    Learn More
  77. 3 x 10" Reverse Osmosis RO Carbon Block Filters

    Our high quality Spectrum carbon block Reverse Osmosis cartridge are an ideal choice carbon block filter, delivering a genuine balance between chlorine absorption, high dirt-holding capacity and excellent value for money.

    Our Carbon Filter blocks are an ideal filter for your Reverse Osmosis Unit.

    Quantity you are purchasing: 3 Carbon Block Filters (10Inch)

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  78. Vontron 300gpd RO Membrane

    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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  79. 12 x Brita Maxtra Compatible Filter Cartridges
    Rating:
    98 % of 100

    Finest Filters universal water jug replacement filter cartridges compatible with Brita Maxtra filter jugs.

    You are purchasing 12 x compatible filter cartridges.

     

    PLEASE NOTE: These are the original Maxtra version, not the Maxtra+. Please check the version you need before ordering. We also have the Maxtra+ available HERE.

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  80. 1/4" Reverse Osmosis Push Fit Ball Valve

    You are purchasing a 1/4" push fit ball valve suitable for all RO units with 1/4" tubing.

    The use of push fit ball valves on the inlet, waste water outlet and product water outlet of a RO unit can help preserve filters if a unit is being transported.

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  81. 100gpd 3 Stage Compact Reverse Osmosis RO Unit

    You are purchasing a high quality Finest Filters 3 stage Compact Reverse Osmosis RO Unit. Complete with all filters and all accessories.

    This unit comes complete with a 100gpd (gallon per day) membrane.

    Our quality 3 stage compact RO units come with all accessories required for immediate setup, allowing you to product ultra pure RO water at home!

    Complete with waste water clamp valve, and also a self piercing feed valve to connect to 15mm copper pipe.

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  82. 200 to 400gpd Reverse Osmosis Membrane Housing with Spanner

    Our large membrane housings will accommodate a 200 to 400gpd RO membrane.

    Complete with 1/4" push fittings on the inlet and outlets, along with a housing spanner to open the housing with ease.

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  83. 24 x Brita Maxtra+ Plus Compatible Filter Cartridges

    Finest Filters universal water jug replacement filter cartridges compatible with Brita Maxtra+ (Plus) filter jugs.

    You are purchasing a pack of 24 x compatible filter cartridges.

    These filter cartridges are the newer Maxtra Plus model which is a new and upgraded model to the standard Maxtra filters. Please see full product description for full details.

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  84. 1/4" Elbow to 1/8" Screw Thread Connector Push Fit RO Fitting

    You are purchasing a 1/4" Push Fit Elbow to 1/8" Screw Thread Connector suitable for use with American style fridges and reverse osmosis plumbing. These push fittings are suitable for use with 1/4" push fit pipe, and we have a wide range of fittings available.

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  85. 18 x Brita Maxtra Compatible Filter Cartridges

    Finest Filters universal water jug replacement filter cartridges compatible with Brita Maxtra filter jugs.

    You are purchasing 18 x compatible filter cartridges.

     

    PLEASE NOTE: These are the original Maxtra version, not the Maxtra+. Please check the version you need before ordering. We also have the Maxtra+ available HERE.

    Learn More
  86. 5 x 10" Reverse Osmosis RO Carbon Block Filters
    Rating:
    100 % of 100

    Our high quality Spectrum carbon block Reverse Osmosis cartridge are an ideal choice carbon block filter, delivering a genuine balance between chlorine absorption, high dirt-holding capacity and excellent value for money.

    Our Carbon Filter blocks are an ideal filter for your Reverse Osmosis Unit.

    Quantity you are purchasing: 5 Carbon Block Filters (10Inch)

    Learn More
  87. 3 x 20" Carbon Block Filter Cartridges

    You are purchasing a pack of 3 x 20" Reverse Osmosis carbon block filter cartridges.

    Important - Please Note: These are 20" filter cartridges and not 10" which is used on standard residential RO units. If you have a small residential unit, please see our 10" filters in our eBay shop.

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  88. 2 x 1/4" Push Fit RO Ball Valves

    You are purchasing a pack of two 1/4" Push Fit valves.

    These push fit valves will fit all Reverse Osmosis / Water filter systems that use 1/4" Plastic tubing.

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  89. 24 x Brita Maxtra Compatible Filter Cartridges

    PLEASE NOTE: These are the original Maxtra version, not the Maxtra+. Please check the version you need before ordering. We also have the Maxtra+ available HERE.

     

    Finest Filters universal water jug replacement filter cartridges compatible with Brita Maxtra filter jugs.

    You are purchasing 24 x compatible filter cartridges.

    Learn More
  90. White In Line Shower Filter for Chlorine and Heavy Metal Removal
    Rating:
    100 % of 100

    You are purchasing a high quality White In Line shower filter.

    These quality filters contain KDF and Activated Carbon filter media, which removes Chlorine and Heavy Metals from the water. These cartridges will last for 1 year, or 10,000 gallons of water.

    Uses standard fittings, simply remove your current shower head, and connect the flexible hose to this shower filter. No plumbing required!

    Replacement filter cartridges also available!

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  91. Single Hanging / Mounting Bracket for RO Housing

    You are purchasing a quality Mounting / Hanging bracket for Reverse Osmosis / De-ionisation filter pods.

    This single hanging bracket is made from steel, and comes complete with 4 screws

    Double and Triple hanging brackets also available!

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  92. 20" Blue Reverse Osmosis Filter Housing

    Finest Filters 20" Blue Reverse Osmosis Housings can be used with any filters, including sediment filters, carbon block, and granular carbon cartridges.

    These quality housings come complete with a pressure release valve contained in the lid.

    This housing comes complete with two screw in straight connectors, available in 1/4" and 3/8" (Please select your required option from the drop down menu).

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    As low as £19.99
  93. 1/4" Elbow to 1/4" BSP Screw Thread Connector Push Fit RO Fitting

    You are purchasing a 1/4" Push Fit Elbow to 1/4" BSP Screw Thread Connector suitable for use with American style fridges and reverse osmosis plumbing. These push fittings are suitable for use with 1/4" push fit pipe, and we have a wide range of fittings available.

    Learn More
  94. 1 x 10" Granulated Activated Carbon GAC Filter Cartridge

    You are purchasing high quality Finest-Filters replacement RO Unit Granulated Activated Carbon (GAC) Filter Cartridges suitable for all RO units that take 10" standard filters.

    You are purchasing QTY 1 x 10" Filter.

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  95. 5 x 20" Carbon Block Filter Cartridges

    You are purchasing a pack of 5 x 20" Reverse Osmosis carbon block filter cartridges.

    Important - Please Note: These are 20" filter cartridges and not 10" which is used on standard residential RO units. If you have a small residential unit, please see our 10" filters in our eBay shop.

    Learn More
  96. 200gpd 4 Stage Reverse Osmosis RO Unit with Optional DI Chamber

    You are purchasing a high quality Finest Filters 200gpd RO Unit. This unit comes with 3 pre filters (5 Micron Sediment, Carbon Block filter and Granular Carbon GAC filter cartridge). It is also supplied with 2 x 100gpd membranes, making this a 200 gallon per day unit.

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  97. 400gpd 4 or 5 Stage Reverse Osmosis RO Unit with Booster Pumps Aquarium Pole Fed

    You are purchasing a high quality Finest Filters 400gpd RO Unit. This unit comes with 3 pre filters (5 Micron Sediment, Carbon Block filter and Granular Carbon GAC filter cartridge). 

    PLEASE NOTE: These units do NOT currently come supplied with a post-carbon T33 cartridge as pictured.

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  98. Refillable DI Resin Container (For 20" Housings)

    20” refillable housing suitable for holding DI resin / activated carbon or any other loose filter media.

    This is an inner housing, which will fit inside any standard 20” outer housing.

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  99. Double Hanging / Mounting Bracket for RO Housings

    You are purchasing a quality Mounting / Hanging bracket for Reverse Osmosis / De-ionisation filter pods.

    This double hanging bracket is made from steel, and comes complete with 8 screws

    Single and Triple hanging brackets also available!

    Learn More
  100. 10 x 20" Carbon Block Filter Cartridges

    You are purchasing a pack of 10 x 20" Reverse Osmosis carbon block filter cartridges.

    Important - Please Note: These are 20" filter cartridges and not 10" which is used on standard residential RO units. If you have a small residential unit, please see our 10" filters in our eBay shop.

    Learn More

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