By what means is air for medical use in a hospital most commonly produced?

Question

Quizplus · Accepted Answer

Air for medical use in a hospital is most commonly produced by fractional distillation, which separates the different components of air based on their boiling points. Oxygen, nitrogen, and other gases are isolated and purified for medical use. Chemical decomposition and electrolysis are not commonly used to produce medical-grade air, and physical separation is not a specific process.

By What Means Is Air for Medical Use in a Hospital