4A molecular sieves in the form of spherical and cylindrical granules in the sizes of 8×12, 8×4 mesh, as well as 1/4 and 1/8 1/16 inches are used in the dehydration process of gas and liquid streams. The size of the holes in these sieves is 4 angstroms and they trap impure molecules with a molecular size of less than 4 angstroms.
