... :Na2O,Al2O3,2.53SiO2,6H2O 3.Molecular Sieve for Ethanol Molecular Sieve 1.Molecular Sieve 3A is ... 3 angstroms (0.3nm). This is large enough to allow in moisture, but excludes molecules such as unsaturated ... the pressure in the case of pressure swing processes.To remove moisture from a 3A molecular sieve, a ... and in pellet 1.6, 3.2. 5.AttentionTo avoid damp and pre-adsorption of organic before running, or ...