5 Best RO Membrane in 2022 (Top Rated)

If you are shopping for a new reverse osmosis (RO) system for your home, you may be wondering which membrane is best.

This is a common question since many different types and brands of RO purifier membranes are on the market.

We have done the research for you and compiled a list of the 5 best RO membranes in 2022.

Keep reading to learn more about these top-rated products and find the perfect one for your system needs!

How Does An Reverse Osmosis Membrane Work?

Reverse osmosis is a water filtration process that removes impurities by using water pressure to force molecules through a semipermeable membrane.

This membrane allows cleaning water purification to pass through while blocking contaminants, including bacteria, parasites, and dissolved minerals.

RO unit membranes can be used in various settings, including homes, businesses, and even spacecraft!

Choosing the best Reverse Osmosis membrane is vital to ensuring that your water filtration systems are effective.

5 Best RO Membrane In 2022

  1. Membrane Solutions 50 GPD Osmosis System
  2. Greatwell Reverse Osmosis Membrane 75 GPD
  3. Express Water – FLTMEME50 – Reverse Osmosis Membrane
  4. Filmtec 75 GPD Filmtec Residential RO Membrane
  5. Pentair OMNIFilter OM1 Reverse Osmosis Membrane

1. Membrane Solutions 50 GPD RO System

Membrane Solutions is a well-known and respected company in the reverse osmosis industry.

This product is their standard TFC (thin film composite) membrane, designed to fit most RO filter systems.

The 50 GPD membrane has a 97% salt rejection rate, making it an excellent choice for those who want to remove impurities from their tap water.

The company offers on-demand support, so you can always get help if you have any questions about the product or your RO filter system.

SAFETY: The semi-permeable membrane is made of food-grade material and tested by an independent third party.

It meets NSF/ANSI 58 standards, providing safe-clean fresh drinking water.

50 GPD: This membrane has a high 50 GPD flow rate, perfect for homes with moderate water filter demands.

UNIVERSAL SIZE: It will fit in most standard RO housings, making it a great choice for those who want an easy replacement.

IMPRESSIVE LIFE: This membrane has a life expectancy of between 24 and 36 months, based on average feed purified water quality.

  • High 50 GPD flow rate
  • Tested to meet NSF/ANSI 58 standards
  • Universal size will fit in most
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2. iSpring Greatwell RO Membrane 75 GPD

The iSpring Greatwell Reverse Osmosis membrane is one of the best on the market, and for a good reason.

It can remove an impressive 99% of contaminants from your tap water, including lead, chlorine smell, fluoride, and more.

It’s also NSF/ANSI certified, meaning it meets high standards for quality and safety.

This semi-permeable membrane is made of food-grade material.

It has a 0.0001-micron size, ensuring that only water molecules will pass through.

 It’s a great choice for families of any size, as it can produce up to 75 gallons of clean drinking water per day.

Plus, the dry version of this membrane is easy to store and doesn’t require any special preservation methods.

Top-notch Quality: It has been independently tested by NSF/ANSI standards.

Standard Size: Industry-standard size membrane that fits most standard under sink RO membrane housings.

High packing density to remove contaminants: The 0.0001-micron size only lets water molecules squeeze through and virtually nothing else.

The dry version of this membrane is easy to store: self-preserving and no need for vacuum sealing or special preservation methods.

  • Membrane with carbon filter remove up to 99% contaminants
  • NSF/ANSI certified for quality and safety
  • Made of food-grade material
  • Produces up to 75 gallons of clean drinking water per day
  • Performance may very

3. Express Water – FLTMEME50 – Reverse Osmosis Membrane

The Express Water filter FLTMEME50 best reverse osmosis membrane is a great choice if looking for a replacement membrane.

This RO system reduces impurities in your water purification, including heavy metals, TDS, arsenic, fluoride, and more.

It is made with high-quality materials for long-lasting filtration and value.

If you have any questions about this product, the experts at Express Water filter are happy to help.

High density:

The Express Water filter FLTMEME50 Best reverse osmosis membrane has a high density, ensuring that it removes even the smallest impurities from your water.

This RO membrane element is perfect for removing contaminants like heavy metals, TDS, arsenic, fluoride, etc.

Quick and easy replacement:

The Express membrane has a great design for quick and easy replacement.

Replacing this RO system is a breeze, so you can get back to enjoying cleaning delicious water in no time.


The Express Water FLTMEME50 reverse osmosis membrane element is a great value.

The RO water membrane has high-quality materials for long-lasting filtration.

 It is backed by on-demand support from the experts at Express Water.

  • High density
  • Quick and easy replacement
  • Value
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4. Filmtec 75 GPD Filmtec RO Membrane

The Filmtec 75 GPD Reverse Osmosis membrane is a great choice for looking for a reliable and efficient reverse osmosis system.

This polyamide thin-film composite membrane is imported and has a capacity of up to 75 gallons per day, making it perfect for households of all sizes.

Additionally, it has a stabilized salt rejection of 98%, which will effectively remove contaminants from your water.

This NSF/ANSI Standard 58 listed membrane is also easy to install, making it a great option for those new to house reverse osmosis systems.


  • Polyamide thin-film composite
  • Up to 75 gallons per day
  • 98% stabilized salt rejection
  • NSF/ANSI Standard 58 listed
  • Easy to install
  • Efficient
  • Reliable
  • Easy to install
  • Performance may very

5. Pentair OMNIFilter OM1 Reverse Osmosis Membrane

The Pentair Omnifilter om1 is a reverse osmosis membrane designed with the Pentair Omnifilter RO water filter system.

This replacement membrane has a 15 gallon per day flow rate.

It is certified by NSF/ANSI to reduce Arsenic, cysts, dissolved solids, and lead from your drinking water.

This membrane should be replaced every 18-24 months for optimal system performance.


  • NSF/ANSI Standard 58 Certified
  • 15 GPD Flow Rate
  • Fits most major brands
  • Reduces cysts, dissolved solids, and lead
  • Replace every 18-24 months
  • Certified to reduce contaminants
  • High flow rate
  • Fits most systems
  • Must be replaced frequently

How to change or replace RO Membrane in RO Water Purifier?

1. Shut off the water supply to your reverse osmosis system by turning off the shut-off valve.

2. Drain the existing water from your RO unit by opening the faucet and allowing all of the water to empty from the storage tank.

3. Disconnect your current RO membrane housing tubing using a razor blade or utility knife.

Cut through the white plastic tubing, careful not to damage the blue tube underneath.

4. Remove the old membrane by unscrewing it from the housing.

5. Install the new membrane by screwing it into the housing and reconnecting the tubing.

Ensure that the blue tube is on top, as this is the inlet for your water filter.

6. Reconnect the water supply to your reverse osmosis system and turn on the shut-off valve.

7. Open the faucet to refill your storage tank.

8. Allow the water purifier to flow for a few minutes to check for leaks.

If you notice any leaks, shut off the water and make necessary repairs.

9. Once everything is properly connected and leaks have been fixed, turn on your reverse osmosis system and enjoy clean, filtered pure water.


When to Change Reverse Osmosis Membrane?

It is typically recommended that you change your reverse osmosis membrane every 24 to 36 months.

However, this may vary depending on the specific water treatment system you have and the quality of your water supply.

If you notice a decrease in the quality of your pure water, it may be time to replace the membrane.

You can also refer to your owner’s manual for specific instructions on how to change your RO water membrane.

How to increase the life of the Reverse Osmosis Membrane?

There are a few things that you can do to help increase the life of your reverse osmosis membrane.

First, be sure to only use filtered water in your system.

If you allow unfiltered water to enter the membrane, it will quickly wear down and require replacement.

You should also flush the membrane regularly with purified water to help remove any built-up sediment or contaminants.

Additionally, it is important to keep the storage tank full of water.

If the tank runs low, it will cause the membrane to work harder and eventually wear out.

How do check Reverse Osmosis membrane is damaged?

If you think that your reverse osmosis membrane may be damaged, there are a few things that you can do to test it.

First, disconnect the tubing from the membrane housing and pour a glass of water.

If the water is cloudy or has bad taste, the membrane is likely damaged and needs replacement.

You can also check the pressure gauge on your RO unit.

If the water pressure is low, it may indicate that the membrane is not functioning properly.

If you are unsure whether or not the membrane is weak, it is always best to consult with a professional.

It will be able to properly diagnose the problem and recommend the best course of action.


The best reverse osmosis membrane for your home depends on various factors, including the quality of your water supply and the size of your water treatment system.

However, the five membranes listed above are some of the most popular and well-rated membranes on the market.

So, you can be sure that you are getting a high-quality product, whichever one you choose.

When it comes time to replace with the best RO membrane, follow the instructions in your owner’s manual.


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