O2-riched molecular sieve for PSA Chemical Formula:4/5CaO?/5Na2O?l2O3?SiO2 Si/Al ratio:SiO2/Al2O3=2 Pore diameter:About5A Use:Application as 5A-molecular sieve, mainly for the production of O2 by PSA. Conservation: Room temperature, humidity below 90%,non-expose to air; non-contact with water, acid and alkali. Packing: 25kg (10 gallon) sealed in ferreous cask 150kg (55 gallon) sealed in ferreous cask