What is a zeolite oxygen sieve used for?

A zeolite oxygen sieve is used in oxygen concentrators to selectively separate nitrogen from the air, allowing oxygen to pass through. Zeolite’s molecular structure, with tiny pores and a high surface area, adsorbs nitrogen when air is pressurized. This leaves the remaining gas enriched with oxygen, typically at 90-95% purity, which is used for medical or industrial purposes.