BVV™ Molecular Sieve Beads Type 13X (10A) - 20LBMolecular Sieve Beads Type 13X 13X molecular sieve is a multiple purpose, highly porous, high capacity alkali metal alumino silicate in the spherical form. It is the sodium form of the Type X crystal structure with pore diameters of approximately 10A. It can adsorb all molecules that can be adsorbed by 3A, 4A, and 5A molecular sieve. Type 13X molecular sieve can also adsorb molecules such as aromatics and branched chain hydrocarbons, which have large