Molecular Sieve Desiccants: Efficient Moisture Absorption for Industrial Use The Molecular sieve desiccants are drying materials that work like microscopic water traps. Their crystal-based structure is filled with consistent pores that are big enough to capture water molecules but too small for other gases or liquids to stick inside. This selectivity allows them to remove only moisture while leaving the core product safe. They do not melt or release trapped liquid,...