Reverse Osmosis RO Membranes 50, 75, 100, 150, 200, 400GPD

Replacement RO membranes in a full range of sizes — from 50GPD for compact home systems up to 400GPD for higher-demand applications. If your drinking water filter system needs a new membrane, this is the most likely replacement you need.

Reverse osmosis membranes are the core of any RO purification system. They work by forcing water through a semi-permeable membrane at pressure, leaving dissolved contaminants behind. Over time (typically 2–3 years), membranes lose efficiency and need replacing to maintain water quality.

Available Sizes:

•     50 GPD — compact under-sink home systems

•     75 GPD — standard home under-sink systems

•     100 GPD — popular home and small office systems

•     150 GPD — higher-flow domestic systems

•     200 GPD — small commercial and high-demand domestic

•     400 GPD — commercial and semi-professional use

Key Features:

•     Removes up to 99% of dissolved salts, chlorine, fluoride, heavy metals, nitrates, and bacteria

•     Standard sizing compatible with most leading under-sink RO systems

•     High rejection rate for consistently pure drinking water

•     Simple drop-in replacement — no specialist tools required

📋 How to use: Not sure which size you need? Check your existing filter system's specification label, or contact us and we'll help you identify the right membrane.