How does reverse osmosis actually work?

How does reverse osmosis actually work?

April 23, 2026 · 38 min · Episode 236

About this episode

This episode explores the workings of reverse osmosis and answers listener questions about chemistry.

When a retired chemist wrote in… we had to explore to his great questions. How does reverse osmosis actually work? Should you put aluminum foil in your dishwasher? Why do mixed powders mysteriously un-mix themselves? This episode is full of clever questions, surprising chemistry, and very strong contributions from listener Vince!

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