This Synthetic Crystalline Zeolite has a specific pore size which separates molecules of water by its size,,comes in 2 different shapes : Beads and Pellets : by far the most common used desiccant for drying application and is probably the most aggressive desiccant in terms of absorption capacity. Primarily used in natural dehydration, it provides a higher capacity for water adsorption than Silica gel or clay desiccant at low rh levels. Ideal for liquid phase application and methanol separation from gas streams