TLC-75 Pentair 75 GPD reverse osmosis membrane

RO membrane for precise water purification

Pentair TLC-75 75 GPD is an osmotic membrane designed for reverse osmosis filters. In an RO system, it plays a key role because it is responsible for separating water molecules from a wide range of contaminants dissolved in water.

This solution is used wherever very high water quality matters. The membrane retains from 96% to 99.99% of dissolved organic and inorganic contaminants, bacteria, viruses, chemical compounds, and heavy metals with a filtration accuracy of up to 0.001 µm. At the same time, it removes dissolved salt compounds, which translates into a reduction in water hardness of over 90%.

The result of the membrane's operation is ideally purified water suitable for drinking and aquarium use. That is why the osmotic membrane is the most important component used in a reverse osmosis system and a modern water filter based on RO technology.

Key benefits

• designed for reverse osmosis filters,
• very high water purification efficiency,
• reduction of 96% to 99.99% of dissolved contaminants,
• retention of organic and inorganic contaminants,
• reduction of bacteria, viruses, chemical compounds, and heavy metals,
• filtration accuracy up to 0.001 µm,
• removal of dissolved salt compounds,
• reduction of water hardness by over 90%,
• obtaining water suitable for drinking,
• suitable for aquarium applications,
• service life can be extended through the use of pre-filters.

Design and operating principle

The membrane consists of multiple layers wound around a perforated core located inside the cartridge. This design makes it possible to achieve a very large filtration area while maintaining compact dimensions typical of membranes used in household RO systems.

Contaminated water is forced under pressure onto the membrane surface. At this stage, water molecules pass through microscopic pores, while contaminants are separated and directed to the drain.

Purified water passes through openings into the central core and then, under pressure, flows out of the membrane as filtered water. Thanks to this process, the reverse osmosis system can effectively lower the level of salts, hardness, and many other undesirable components present in raw water.

What applications is this membrane suitable for?

TLC-75 Pentair 75 GPD is a good choice for installations where high-quality filtered water is expected. The membrane is particularly suitable for:

• household reverse osmosis filters,
• drinking water preparation systems,
• systems that improve water taste and quality,
• aquarium applications, where a low level of contaminants and dissolved salts matters.

Operation and service recommendations

For proper membrane operation, it is very important to protect it appropriately with pre-filters. These are the components that reduce the inflow of larger contaminants that could accelerate wear of the osmotic cartridge and reduce filtration effectiveness.

The use of pre-filters can extend membrane service life to as much as several years. However, actual durability depends on operating conditions and feed water quality.

Why is the condition of pre-filters so important?

The osmotic membrane works most effectively when the incoming water has been properly pretreated. Worn or neglected pre-filter cartridges can shorten membrane service life, reduce filtration performance, and accelerate the buildup of contaminants on its surface.

Regular inspection of the entire system is a simple way to maintain stable operation of the water filter and high water quality after the RO process.

Technical specifications