Molecular Sieve 5A Hydrogen Generation 1.ISO 9001:2008 2.20 years professional manufacture ... -2mm,2-3mm,2.5-5mm Molecular Sieve 5A Hydrogen GenerationMolecular Sieve 5A is an alkali alumino silicate; it ... and iso- paraffins (C4 to C6 species), in PSA hydrogen purification and in oxygen concentrators. Typical Chemical Formula0.70CaO 0 ... , or must to be reactivated. Molecular Sieve 5A Hydrogen Generation