Molecular Sieves - High Porosity Crystalline Metal-alumino Silicates, Rapid Water Vapour Adsorption For Ultra Dry Environments

Molecular sieves are desiccants with differing properties to those of silica gel. With the appearance of small opaque pinkish beads, molecular sieves are synthetically produced, highly porous crystalline metal-alumino silicates. They have many internal cavities that are linked by window openings of precise diameters. adsorption of water from air and liquids, as water molecules are both polar and very small.

Molecular sieves properties as desiccants differ from silica gel in a number of ways :
(1) They adsorb water vapour more rapidly than silica gel.
(2) They will reduce water vapour to much lower levels than silica gel, making their use essential when a very dry product or atmosphere is required.
(3) They perform more effectively as moisture adsorbers at higher temperatures (greater than 25A C) than silica gel does.