One of the most common types of gas purifiers is the molecular sieve purifier. Molecular sieve is a type of adsorbent material that has a high affinity for water molecules. When the gas stream passes through the molecular sieve bed, the water molecules are adsorbed onto the surface of the sieve, leaving behind a purified gas stream. Molecular sieve purifiers are widely used in industries where moisture removal is critical, such as in semiconductor manufacturing.