https://www.laiko.net/products/lithium-molecular-sieve.html Lithium Molecular Sieve Lithium molecular sieve is high-performance lithium exchanged low silica form of the X-type zeolite with exceptional nitrogen capacity to provide optimal performance in the separation of oxygen from the air in medical zeolite oxygen concentrators. The molecular sieve material is developed and designed for the production of up to 95% oxygen-rich airstreams in medical molecular sieve oxygen concentrators with air flows up to 10 liters per minute. There are three mechanisms of adsorption separation: steric hindrance effect, kinetic effect, and equilibrium effect.