... 4A,5A, 13X 2)drying,absorbent,cleaning ect. producthigh quality molecular sieveProduct descriptionMolecular sieve is a material containing tiny pores of ... size that is used as an for gas and liquid.Molecular sieves are often utilized in the industry, especially for ... apparatus -is used in this case.Methods for regeneration of molecular sieves include pressure change (as in oxygen concentrators), heating ...