13X Molecular sieve is a synthetic zeolite commonly used as a desiccant to selectively adsorb water from a variety of gases and liquids. Common applications include the dehydration of compressed air, solvents, hydrocarbons, refrigerants, and inert gases. 13X Molecular sieves are also used in a variety of air and gas separation processes, such as the selective adsorption of oxygen in nitrogen generators. This listing is for 308 LB of 8X12 mesh beads in a 55 gallon steel drum.