What is a Membrane Filter and How Does it Work?

Membrane filters act as a barrier to separate contaminants from water, or they remove the particles contaminating the water. Reverse osmosis, ultrafiltration, and nanofiltration all use a membrane in their different filtration processes.

Our Master Water Specialist, John Woodard, explains what a membrane filter is and how it works inside different water filtration systems.

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0:00 Introduction
0:11 What is membrane filtration?
0:36 How does a membrane filter work?
1:31 What's the difference between reverse osmosis and ultrafiltration?
2:00 What are membrane filters made of?
2:56 How often should you replace a membrane filter?
3:48 How do you clean a membrane filter?
4:27 How do you flush a filtration membrane?
5:06 What is fouling and scaling in a membrane filter?