DIY Mass Spectrometer Measures Potassium in Salt Substitute
Applied Science · Demo · 27 min · 2019 · YouTube title: DIY mass spectrometer measures potassium in dietary salt substitute
Why it's here
Recommended as an expert-made DIY build that explains why the apparatus is designed as it is, though one commenter notes a missing baseline run.
What it covers
Ben Krasnow of Applied Science builds and operates a simple mass spectrometer, using it to measure potassium isotopes in a salt substitute. He explains the design choices and the theory behind it.