... opening of about 4 angstroms (0.4nm). type 4A molecular sieve will adsorb most molecules with a ... .5≤1.5Application Drying and removing of CO2 from natural gas, LPG, air, inert and athmospheric gases, ... simply as a packaging desiccant.RegenerationMolecular sieve Type 4A can be regenerated by either heating in the ... must to be reactivated. 3A Molecular Sieve (zeolite, 4a, 5a, 10x, 13x molecular sieve)