... to exceed 1000° F.The degree of regeneration depends on the temperature reached in purge.Molecular sieve is often used as a ... F.The pore size for 4A molecular sieve is 4A. It is mainly used to adsorb water, methanol, ethanol, sulfureted hydrogen, carbon dioxide, ... as a polishing layer in molecular sieve dryers to achieve dewpoints down to -120°F. Molecular sieve is the most effective desiccant for low ...