RO Membrane: Complete Guide to Types, Price, Working, Brands, and the Best RO Membrane in India

A reliable water purifier depends heavily on the quality of its RO membrane, which is the heart of the reverse osmosis system. While filters, carbon cartridges, and UV chambers improve water quality, the RO membrane decides how pure the water will ultimately be. Choosing the right membrane affects everything from TDS levels to taste, durability, maintenance cost, and long-term performance.

If you’re looking for the best quality RO membrane in India, understanding its types, functions, working principle, layers, price, and major brands is important. Whether you need a membrane for domestic use (75 GPD, 80 GPD, 100 GPD) or for commercial/industrial systems (4040, 8040, 2000 LPH), this detailed guide covers everything.

Below is a complete expert-written guide targeting all major keywords such as RO membrane, RO membrane best quality, RO membrane working principle, types of RO membrane, Top 5 RO membrane in India, RO membrane 100 GPD price, RO membrane housing price, and more.

What Is an RO Membrane?

The RO membrane is a semi-permeable membrane used in water purifiers for removing dissolved solids, heavy metals, bacteria, viruses, and chemical contaminants. Unlike sediment or carbon filters, an RO membrane removes impurities at the molecular level, which makes it the most important component in a purification system.

When water passes through this membrane, only pure H₂O molecules cross to the other side, while contaminants are flushed away as reject water.

Water purifiers with good RO membranes provide:

• Low TDS drinking water

• High purity level

• Long-life performance

• Better taste and odor removal

• Protection against heavy metals like arsenic, lead, and mercury

RO Membrane Working Principle

Understanding the RO membrane working principle is essential before selecting a model.

Reverse Osmosis works on a simple scientific mechanism:

1. Water is pushed through the RO membrane under pressure.

2. The membrane has microscopic pores of size 0.0001 micron.

3. Only water molecules pass through these pores.

4. All dissolved salts, minerals, chemicals, bacteria, viruses, and impurities are blocked.

5. Pure water enters the storage tank.

6. Contaminants are discharged through the reject line.

This process ensures that the membrane reduces:

• TDS

• Fluoride

• Nitrates

• Chlorine

• Heavy metals

• Hardness

• Pathogens

This makes the RO membrane the best purification technology for Indian households where water often contains high TDS and chemical pollutants.

RO Membrane Layers

A typical RO membrane consists of three main layers:

1. Polyester Support Layer

Provides mechanical strength to the membrane.
It ensures the thin membrane surface stays stable under pressure.

2. Microporous Support Layer

This layer uniformly distributes water across the membrane surface.

3. Thin Polyamide Layer

This is the actual filtering layer responsible for removing contaminants.
It is the heart of the RO technology.

The combination of all three layers forms a Thin Film Composite (TFC) membrane, which is used in most modern water purifiers.

Types of RO Membrane

There are several types of RO membranes, depending on usage, capacity, and structural design.

1. Domestic RO Membranes

Used in home RO systems with a capacity of 10–20 liters per hour.
Common sizes include:

• RO Membrane 75 GPD

• RO Membrane 80 GPD

• RO Membrane 100 GPD

• RO Membrane 150 GPD

Domestic membranes work up to 2000–2500 TDS levels.

2. Commercial RO Membranes

Used in offices, restaurants, hospitals, and shops with higher consumption.
Common capacities include:

• 300 GPD

• 450 GPD

• 600 GPD

These membranes handle higher TDS levels and provide faster purification.

3. Industrial RO Membranes

Large-scale membranes used in 500 LPH, 1000 LPH, and 2000 LPH RO plants.

Popular industrial membrane sizes:

• 4040 RO membrane

• 8040 RO membrane

These membranes are used for:

• Factories

• Schools

• Water plants

• Commercial establishments

• Industrial purification units

4. Hollow Fiber Membranes

Used mainly in UF and MF systems, not pure RO, but often combined.

5. Brackish Water RO Membrane (BWRO)

Used for high-TDS water sources such as borewells and industrial water.

6. Sea Water RO Membrane (SWRO)

Used for desalination of seawater.

RO Membrane Types and Functions

1. Thin Film Composite (TFC) Membrane

Most commonly used in home RO systems.

Functions:

• Removes dissolved solids

• Removes heavy metals

• Removes microorganisms

• Improves taste

2. Cellulose Triacetate Membrane (CTA)

Older technology, less efficient, requires chlorinated water.

Functions:

• Removes smaller contaminants

• Cheaper but less durable

3. Brackish Water Membrane

Used in areas with TDS 2000–6000+.

Functions:

• Sustains high TDS

• Higher output

4. Sea Water Membrane

Used where TDS levels are extremely high.

Functions:

• Removes salt

• Suitable for industrial desalination

RO Membrane Price

RO membrane price varies by type, brand, capacity, and build quality.

Below is a detailed breakdown.

RO Membrane 75 GPD Price

Price ranges between ₹300 to ₹700 depending on brand and quality.

RO Membrane 100 GPD Price

Price ranges between ₹450 to ₹1200.
Many technicians prefer 100 GPD membranes for higher water output.

150 GPD and 300 GPD Membrane Price

Ranges between ₹900 to ₹2500.

2000 Liter RO Membrane Price

Industrial membrane prices vary widely:

• 4040 Membrane: ₹10,000 to ₹18,000

• 8040 Membrane: ₹20,000 to ₹40,000

Prices depend on brand, specifications, and TDS level support.

RO Membrane Housing Price

RO membrane housings generally cost between:

• Domestic housing: ₹150 to ₹450

• Industrial housing: ₹1500 to ₹9000

For the latest RO membrane prices, you can explore this link:
Explore the Wide Collection of Domestic Membrane

Membrane in RO Price

The final price of an RO membrane depends on:

• Flow rate

• Material

• Filtration quality

• Brand

• Warranty

• Application usage

Domestic users mostly prefer 75/80/100 GPD due to cost-effectiveness and reliable performance.

RO Tap Connector and RO Membrane

Many customers search for terms like RO tap connector, but while they are not part of the membrane, they are essential components of the purifier system.

RO tap connectors are required for:

• Connecting pipes

• Ensuring leak-proof joints

• Maintaining pressure flow

• Efficient water outlet management

While buying an RO membrane, make sure the supporting accessories like tap connectors, pipes, and adapters are in good condition to ensure the membrane works effectively.

Top 5 RO Membranes in India Price List

Here is an expert-curated list of the top membranes available in India.

1. Vontron RO Membrane

Price: ₹450–₹1500
Known for heavy-duty performance in borewell and hard water conditions.

2. Filmtec Dow (DOW Filmtec Membrane)

Price: ₹900–₹3000
One of the best global brands. Exceptional quality and long life.

3. Aquagrand Membrane

Price: ₹350–₹700
Good for low-budget domestic RO systems.

4. Kent/Quality Imported Membranes

Price: ₹700–₹1500
Reliable for consistent performance.

5. 3D Aqua Membranes

Price: ₹450–₹1200
Known for durability and high TDS treatment.

Top 5 RO Membranes in India for Home

Below are the most trusted membranes for household RO purifiers:

1. DOW Filmtec 75 GPD

2. Vontron 80 GPD

3. Aquagrand 100 GPD

4. Lexpure membrane

5. Grand Forest 100 GPD

These membranes offer the best performance in Indian homes with borewell or municipal water.

Top 10 RO Membranes in India

1. DOW Filmtec

2. Vontron

3. Lexpure

4. Grand Forest

5. Aquagrand

6. Kent RO Membrane

7. Pure Life 100 GPD

8. Hydronix Membrane

9. Aquafresh

10. Aqua Blue

Best RO Membrane Company in India

When evaluating quality, durability, and performance, the best companies include:

• DOW Filmtec

• Vontron

• Hydranautics

• 3D Aqua

• Lexpure

These companies have proven performance in both domestic and industrial RO systems.

Best Quality RO Membrane in India

The best quality RO membranes are the ones that offer:

• High TDS reduction

• Low rejection water

• High recovery rate

• Long operational life

• Consistent performance

Top performers:

1. DOW Filmtec 75 GPD

2. Vontron 80 GPD

3. Hydranautics 4040 Membrane

4. 3D Aqua Industrial Membrane

5. Aquagrand Domestic Membrane

Factors to Consider Before Buying an RO Membrane

Choosing the right RO membrane depends on the following factors:

1. TDS Level in Your Water Source

• Up to 1500 TDS: 75/80/100 GPD

• 1500–3000 TDS: 100/150 GPD

• 3000–6000 TDS: Commercial membrane

• Above 6000 TDS: Brackish water/sea water membrane

2. Water Source

• Borewell water: High TDS

• Tanker water: Medium TDS

• Municipal water: Low TDS

3. Quality and Build

Choose TFC membranes as they last longer and purify better.

4. Brand Reliability

Good brands ensure safe and long-term performance.

5. Price vs Quality

Cheapest membranes may fail quickly, costing more in the long run.

Benefits of a High-Quality RO Membrane

• Removes 99 percent impurities

• Provides sweet-tasting water

• Long filter life

• Lower maintenance

• More efficient TDS reduction

• Safe for kidney health and daily use

Why Regularly Replace the RO Membrane?

Most RO membranes last between 12 to 24 months, depending on usage and TDS.

Replace it when:

• Water smells or tastes bad

• TDS remains high even after purification

• Water flow becomes slow

• Storage tank takes longer to fill

Timely replacement ensures consistently safe drinking water.

Where to Buy the Best RO Membrane in India?

For genuine RO membranes, accessories, and spare parts, you can explore trusted listings here:

Ro Membrane

This platform offers:

• Domestic and industrial RO membranes

• Verified sellers

• Best wholesale and retail prices

• Secure delivery across India

Conclusion

The RO membrane is the core component that defines the overall quality of your water purifier. Understanding its working principle, types, layers, functions, and pricing helps you choose the right product for your needs. Whether you are looking for the best RO membrane in India, an affordable 100 GPD membrane, or industrial RO membranes, choosing a high-quality brand ensures long-lasting performance and safe drinking water.

Always check TDS levels, water source, and brand credibility before buying. For genuine RO membranes at the best price, explore: