RO Membrane Flow Rate Calculator

This will tell you how much water your filter should produce a day based on your filter’s performance specifications and the real world operating conditions that you are using your filter in.

It’s probably time to replace your RO filters if the amount of water produced by your filter is less than the output the calculator expects.

You can download the formulas, charts, and information about RO membrane permeate flow rate in a handy PDF called, Calculating Adjusted Permeate Flow Rate for Thin Film Membranes. But trust me, the calculator is much easier and way faster.