13X APG Molecular Sieve, is the sodium form of the type X crystal and has a much larger pore opening than the type A crystals. It will adsorb molecules with a kinetic diameter of less than 9 angstrom(0.9nm) and exclude those larger.

Xintao 13X APG Molecular Sieve, the highest theoretical capacity of the common adsorbents and very good mass transfer rates. It can remove impurities too larger to fit into a type A crystal and is commonly used to separate N₂ from O₂.