A Simple but Effective High-Flow Oxygen Concentrator from Hardware Store Parts

From the HaD Comments: What zeolite to use?

13X zeolite 0.4 mm – 0.8 mm or JLOX 101 are both commonly used in o2 concentrators the second one is the most expensive. I used the 13X when rebuilding my craigslist o2 concentrator.

13x (10 angstrom pore size)

https://catalysts.basf.com/files/literature-library/BASF_13X...

5A (5 angstrom pore) molecular sieve can also be used. I think it’s a bit less selective for nitrogen but still usable.