Desiccant Material Comparison Chart

Property Molecular Sieve Silica Gel  Clay
Adsorptive Capacity at low H20 Concentrations Excellent Poor Fair
Rate of Adsorption Excellent Good Good
Capacity for Water @77° F, 40% RH High Medium Medium
Adsorptive Capacity at Elevated Temperatures  Yes No  No 
Separation by Molecular Sizes  Excellent  Poor   Poor