Membrane Solutions 50 GPD RO Membrane – 11.75 x 1.75 in Under-Sink Water Filter Replacement

Upgrade your under-sink water filtration

This Membrane Solutions 50 GPD RO membrane is designed to slot into most residential reverse osmosis systems. The core filtration barrier is a 0.0001-micron Thin Film Composite (TFC) layer that works with a high permeate flow to deliver steady water supply from your filtered taps.

What makes it effective

• High rejection rate: The membrane delivers about 97 percent stabilized salt rejection, helping reduce a wide range of dissolved solids.
• Fine barrier: The 0.0001-micron TFC layer captures heavy metals, organic materials, and soluble salts that can affect taste and clarity.
• Quality materials: Built from food-grade TFC materials designed for reliable long-term use in drinking water systems.

Specifications at a glance

• Size: 11.75 x 1.75 inches, standard for most 2-inch internal diameter housings
• Compatibility: Fits standard RO housings and widely used brands including APEC MEM-ES-50 and Dow Filmtec TW30-1812-50
• Warranty and life: Typically lasts 24–36 months depending on feedwater quality and pressure
• Packaging: Shipped dry in an original sealed package to preserve performance
• Support: US-based experts available for questions during the life of the product

In everyday use, you may notice water that tastes crisper and cleaner, with reduced metallic or chemical notes. The membrane is designed to support consistent filtration performance when paired with a standard RO system under your sink. The product is a practical replacement option for many older or worn membranes, helping you maintain your filtration setup without major changes to your system.

Important notes: While this membrane is designed for reliability, results can vary with water quality, temperature, and pressure. The benefits are presented as possibilities based on typical system use rather than guaranteed outcomes. If you have questions about fit or performance, our American-based support team is ready to help.