13X molecular sieves in the form of spherical and cylindrical granules in the sizes of 12 x 8, 8 x 4 mesh, as well as 1/4 and 1/8 1/16 inches in the process of dehydration, desulfurization and purification of streams. Gas and liquid are also used in the process of separating oxygen and hydrogen from air flow (Air Seperation). The size of the holes in these sieves is 10 angstroms and they trap impure molecules with a molecular size of less than 10 angstroms.
