Shop reverse osmosis membranes at GroAqua, with domestic replacement membranes and commercial RO membrane elements from trusted manufacturers including Aquafilter and PRISM. Choose from a range of membrane capacities, sizes and performance grades to suit your water filtration system. Whether you're replacing a domestic RO membrane or sourcing an element for a commercial installation, check the specifications to find the right fit.
Reverse Osmosis Membranes
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Aquafilter Aquafilter TFC-75F RO membrane
Aquafilter TFC-75F RO membrane. RO membranes consists of many thin layers of porous, semi-permeable film wound around a central core. TFC-x series membranes are compatible with most RO systems available on the market. They effectively remove 96%-99% of suspended particles, most bacteria and viruses, VOCs (not smaller than 0.0001 μm) and even ions. All filtered impurities are flushed to drain. TFC-x series membranes improve overall quality of water. Keep in mind that the performance of the RO membranes depends on water temperature and applied pressure. Low temperature of influent water will affect (lower) membrane performance. Pressure has a similar effect. In such cases, booster pump is required. Aquafilter offers TFCx-F Reverse Osmosis (RO) membrane suitable for POU (Point of Use) installations. TFCx-F membranes consist of many thin layers of porous, semi-permeable film wounded around a central core. Its small pore size (0.0001 micron) allows TFCx-F acting as a barrier against suspended particles, most of bacteria and viruses, ions and VOC’s present in your tap water. Finally, all filtrate impurities are flushed to drain, ensuring a continuous and efficient supply of clean water. TFCx-F membranes are compatible with most RO systems present on the market.
€32,95
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Prism PRISM TF Thin Film RO Membrane 1.8" X 12" 75 GPD
When it comes to choosing a membrane, it is important to consider the application requirements and the membrane's operating specifications. PRISM's offering of commercial and industrial RO membranes provide a solution for a variety of application conditions. For applications that demand higher permeate quality, the Plus Grade range of membranes has been manufactured to deliver consistent permeate quality from higher concentration feed water sources up to 10,000 mg/l.
€32,95
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Aquafilter Aquafilter TFC-50F RO membrane
Aquafilter TFC-50F RO membrane. RO membranes consists of many thin layers of porous, semi-permeable film wound around a central core. TFC-x series membranes are compatible with most RO systems available on the market. They effectively remove 96%-99% of suspended particles, most bacteria and viruses, VOCs (not smaller than 0.0001 μm) and even ions. All filtered impurities are flushed to drain. TFC-x series membranes improve overall quality of water. Keep in mind that the performance of the RO membranes depends on water temperature and applied pressure. Low temperature of influent water will affect (lower) membrane performance. Pressure has a similar effect. In such cases, booster pump is required. Aquafilter offers TFCx-F Reverse Osmosis (RO) membrane suitable for POU (Point of Use) installations. TFCx-F membranes consist of many thin layers of porous, semi-permeable film wounded around a central core. Its small pore size (0.0001 micron) allows TFCx-F acting as a barrier against suspended particles, most of bacteria and viruses, ions and VOC’s present in your tap water. Finally, all filtrate impurities are flushed to drain, ensuring a continuous and efficient supply of clean water. TFCx-F membranes are compatible with most RO systems present on the market.
€28,95
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Prism PRISM TF Thin Film RO Membrane 1.8" X 12" 100 GPD
Fully automated production ensures consistency whilst maximising the usable surface area of this multi-leaf membrane. The 1.8'' ROM elements repeatedly perform to specification, with flows up to 30% higher than traditionally hand-rolled elements, which are often prone to a high failure rate in-situ. The 1.8'' membranes are a reliable choice for applications from laboratory to residential systems. For use with the ROH-1812 housing and most other 1812 housings.
€34,95
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Prism PRISM TF Thin FIlm RO Membrane 1.8 x 12'' 150 GPD
Fully automated production ensures consistency whilst maximising the usable surface area of this multi-leaf membrane. The 1.8'' ROM elements repeatedly perform to specification, with flows up to 30% higher than traditionally hand-rolled elements, which are often prone to a high failure rate in-situ. The 1.8'' membranes are a reliable choice for applications from laboratory to residential systems. For use with the ROH-1812 housing and most other 1812 housings.
€43,95
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Aquafilter Aquafilter TFC-100F RO membrane
Aquafilter TFC-75F RO membrane. RO membranes consists of many thin layers of porous, semi-permeable film wound around a central core. TFC-x series membranes are compatible with most RO systems available on the market. They effectively remove 96%-99% of suspended particles, most bacteria and viruses, VOCs (not smaller than 0.0001 μm) and even ions. All filtered impurities are flushed to drain. TFC-x series membranes improve overall quality of water. Keep in mind that the performance of the RO membranes depends on water temperature and applied pressure. Low temperature of influent water will affect (lower) membrane performance. Pressure has a similar effect. In such cases, booster pump is required. Aquafilter offers TFCx-F Reverse Osmosis (RO) membrane suitable for POU (Point of Use) installations. TFCx-F membranes consist of many thin layers of porous, semi-permeable film wounded around a central core. Its small pore size (0.0001 micron) allows TFCx-F acting as a barrier against suspended particles, most of bacteria and viruses, ions and VOC’s present in your tap water. Finally, all filtrate impurities are flushed to drain, ensuring a continuous and efficient supply of clean water. TFCx-F membranes are compatible with most RO systems present on the market.
€41,95
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Axeon Axeon HF4-4040 Extra Low Pressure Membrane 4" x 40"
Maximize the efficiency of your water treatment systems with the AXEON HF4-4040 Extra Low Pressure Membrane, available from GAPS Water Treatment. This membrane combines cutting-edge technology with robust construction to deliver outstanding performance and durability in reverse osmosis processes. Key Features: Extra Low Energy Consumption: Operates at reduced pressures, minimizing energy usage while maintaining high efficiency. High Flow Capacities: Provides strong water flow to ensure consistent and effective filtration. Improved System Performance: Incorporates advanced membrane technology for enhanced operational efficiency. Protective ABS Shell: Features a durable construction for long-lasting reliability. Vacuum Integrity Tested: Each membrane undergoes rigorous testing to ensure superior quality and performance. 1-Year Limited Warranty: Backed by a warranty for added peace of mind. Made in the U.S.A.: Manufactured domestically, guaranteeing high-quality standards. Benefits: Decrease energy costs with efficient performance. Achieve reliable, high-quality filtration results. Enjoy easy handling and indefinite shelf life with dry shipping. Enhance your water purification systems with the AXEON HF4-4040 Membrane, engineered for exceptional reliability and performance.
€1.097,95
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Axeon Axeon HF5-4040 Ultra Low Pressure Membrane 4" x 40"
Elevate your water treatment process with the AXEON HF5-4040 Ultra Low Pressure Membrane, available from GAPS Water Treatment. Designed for superior energy efficiency and exceptional performance, this membrane is perfect for advanced reverse osmosis applications. Key Features: Ultra Low Energy Consumption: Achieves optimal performance at just 80 psi, ensuring significant energy savings. High Flow Capacities: Provides consistent and robust water flow for effective and reliable filtration. Improved System Performance: Features advanced membrane technology for enhanced operational efficiency. Protective Tape Wound Exterior: Offers durable protection, ensuring long-lasting membrane reliability. Vacuum Integrity Tested: Each membrane undergoes rigorous testing to guarantee top-tier quality and performance. 1-Year Limited Warranty: Backed by a comprehensive warranty for added peace of mind. Made in the U.S.A.: Reflects high manufacturing standards through domestic production. Benefits: Significantly reduce energy costs with ultra-efficient operation. Achieve dependable, high-quality filtration results, even in low-temperature conditions. Benefit from easy handling and indefinite shelf life due to dry shipping. The AXEON HF5-4040 Membrane is unmatched in the industry, effectively replacing models like FilmTec XLE-4040, Hydranautics ESPA4-4040, and AXEON HF4-4040. Upgrade your water treatment systems for exceptional efficiency and reliability.
€1.453,95
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Axeon Axeon HF5-4021 Ultra Low Pressure Membrane 4" x 21"
Transform your water treatment systems with the AXEON HF5-4021 Ultra Low Pressure Membrane, available from GAPS Water Treatment. This membrane is engineered for optimal energy efficiency and superior performance, making it an excellent choice for advanced reverse osmosis applications. Key Features: Ultra Low Energy Consumption: Operates effectively at just 80 psi, leading to significant energy savings. High Flow Capacities: Delivers robust water flow for consistent and effective filtration. Improved System Performance: Incorporates cutting-edge membrane technology to boost overall system efficiency. Protective Tape Wound Exterior: Enhances durability and long-term reliability of the membrane. Vacuum Integrity Tested: Each unit is thoroughly tested to ensure top-tier quality and performance. 1-Year Limited Warranty: Provides added security with a comprehensive warranty. Made in the U.S.A.: Guarantees high manufacturing standards with domestic production. Benefits: Slash energy costs with ultra-efficient performance. Achieve exceptional filtration results, even in challenging cold temperatures. Enjoy ease of handling and prolonged shelf life due to dry shipping. The AXEON HF5-4021 Membrane is unrivaled in the market, effectively replacing models such as FilmTec XLE-4021, Hydranautics ESPA4-4021, and AXEON HF4-4021. Upgrade your water treatment setup for unmatched efficiency and reliability.
€807,95
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Prism ROM-4x21-1100-V PRISM VALUE RANGE : High Flow Low Energy Membrane 4" X 21"
Offering uncompromised water quality when cost is your main consideration. The fibreglass wrapped Value Grade 4" x 40" and 4" x 21" deliver new standards in quality and performance for economic RO membranes, making them a perfect choice for the competitively priced market. 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. This membrane is for any business that requires a high rate of filtered water with a crystal clear finish. Technology: Tap Water Reverse Osmosis MembraneMaterial: Thin Film Composite PolyamideAvg Rejection (%): 98.5Performance: Low EnergyLength: 21"Diameter: 4"Operating Pressure (bar): 6.9Permeate Flow Rate (lpm): 2.1
€207,95
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Prism ROM-4X40-2600-V PRISM VALUE RANGE : High Flow Low Energy Membrane 4" X 40"
Offering uncompromised water quality when cost is your main consideration. The fibreglass wrapped Value Grade 4" x 40" and 4" x 21" deliver new standards in quality and performance for economic RO membranes, making them a perfect choice for the competitively priced market. 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. This membrane is for any business that requires a high rate of filtered water with a crystal clear finish. Technology: Tap Water Reverse Osmosis MembraneMaterial: Thin Film Composite PolyamideAvg Rejection (%): 98.5Performance: Low EnergyLength: 40"Diameter: 4"Operating Pressure (bar): 6.9Permeate Flow Rate (lpm): 5.8
€391,95
A reverse osmosis membrane is the central filtration component in a reverse osmosis (RO) water treatment system. It uses a semi-permeable membrane to separate water from many dissolved substances and impurities, producing a purified water stream known as permeate.
At GroAqua, we stock a selection of reverse osmosis membranes for domestic, commercial and industrial water filtration applications. Our range includes replacement membranes from manufacturers such as Aquafilter and PRISM, with different capacities, dimensions and operating specifications.
Whether you need a replacement RO membrane for an under-sink drinking water system or a larger membrane element for a commercial water treatment installation, choosing the correct specification is essential.
Domestic Reverse Osmosis Replacement Membranes
Domestic reverse osmosis systems commonly use compact membrane elements, including standard 1812 membranes. These are widely used in under-sink RO water filtration systems.
Our range includes domestic membrane options such as:
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50 GPD RO membranes – for compatible domestic reverse osmosis systems.
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75 GPD RO membranes – a common replacement capacity for domestic drinking water systems.
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100 GPD RO membranes – for compatible systems requiring a higher nominal production capacity.
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150 GPD RO membranes – for suitable systems designed to accommodate this membrane capacity.
GPD means gallons per day and describes the membrane's nominal production capacity under specified test conditions. Actual output will vary depending on feed water temperature, pressure, water quality and system configuration.
Before purchasing a replacement membrane, check its dimensions, connection type, capacity and compatibility with your existing RO system.
Commercial and Industrial RO Membrane Elements
For larger water treatment applications, commercial and industrial reverse osmosis systems use larger membrane elements designed for higher water production requirements.
GroAqua stocks PRISM membrane options, including larger 4-inch elements and specialist low-energy membrane grades.
These membranes are used in applications where water quality, production capacity, operating pressure and system efficiency are important considerations.
When selecting a commercial RO membrane, consider:
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Membrane dimensions and pressure vessel compatibility.
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Nominal permeate production rate.
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Salt rejection performance.
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Recommended operating pressure.
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Feed water salinity and composition.
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Temperature and pH operating limits.
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Energy requirements and system recovery rate.
The correct membrane must match the system's pressure vessel and operating conditions. Always consult the manufacturer's technical data before selecting a replacement.
How Does a Reverse Osmosis Membrane Work?
Reverse osmosis uses pressure to move water through a semi-permeable membrane. The membrane allows water molecules to pass through while restricting many dissolved salts, ions and other contaminants.
The process produces two water streams:
Permeate: The treated water that passes through the membrane and is collected for use.
Concentrate: The stream containing the substances retained by the membrane, which is discharged to drain or managed through the system's recovery arrangement.
The membrane's performance depends on several operating conditions, including feed water pressure, temperature, dissolved solids concentration and membrane condition.
RO membranes are commonly used alongside sediment and activated carbon pre-filters. These earlier filtration stages help protect the membrane from particles and chlorine that could affect its performance.
Choosing the Correct RO Membrane
Selecting a compatible replacement membrane is important for maintaining the performance of your reverse osmosis system.
Before ordering, check the following:
1. Membrane Size
Confirm the membrane length and diameter. Domestic systems commonly use 1812 membrane elements, while commercial installations may use larger 4-inch or other specialist formats.
2. Production Capacity
Check the rated production capacity, normally stated in GPD or litres per day. Select a membrane that matches your system's design requirements.
3. Operating Pressure
Different membranes are designed for different operating pressures. Low-energy and extra-low-pressure membranes may have different requirements from conventional elements.
4. Membrane Compatibility
Check the manufacturer's model information, dimensions, fittings and pressure vessel requirements. Similar-looking membranes are not necessarily interchangeable.
5. Water Quality and Application
Consider the feed water's dissolved solids concentration and the required permeate quality. Domestic drinking water systems and commercial treatment installations may need different membrane specifications.
Maintaining Your Reverse Osmosis Membrane
Correct maintenance helps protect your RO membrane and maintain consistent water production.
Useful maintenance practices include:
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Replace sediment and carbon pre-filters at the intervals recommended by the system manufacturer.
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Ensure carbon pre-filtration is suitable for protecting the membrane against chlorine where required.
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Monitor feed water pressure and system production.
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Check the quality of the permeate using a suitable TDS meter or conductivity meter.
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Investigate changes in production rate or salt rejection.
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Follow the manufacturer's instructions for membrane flushing, cleaning and replacement.
A reduction in water production does not automatically mean the membrane needs replacing. Low feed pressure, cold water, blocked pre-filters and scaling can also affect performance.
Buy Replacement Reverse Osmosis Membranes from GroAqua
Explore the GroAqua range of domestic and commercial reverse osmosis membranes, including Aquafilter and PRISM membrane elements.
From compact replacement RO membranes for under-sink drinking water systems to larger commercial membrane elements, compare capacities, dimensions and operating specifications to find a suitable option.
If you are maintaining a complete domestic reverse osmosis system, browse our replacement filter cartridges and RO filter sets for compatible sediment, carbon and post-filtration stages.
Choose the correct membrane for your system and keep your reverse osmosis water treatment equipment operating as intended.