How effective are different desiccants?
Different desiccants are based on different substances with different capabilities to absorb moisture. When choosing your desiccants it is important to know that different substances have different characteristics. One important factor is the ability to absorb moisture in relation to its own weight which is shown in the graph. Other factors are absorption rate at different levels of relative humidity and the risk for re-evaporation.
MT=100 % Montmorillionite Clay
MD= 90% Montmorillionite Clay + 10% Calcium Chloride
CaCl2 = Calcium Chloride
Read more about the different substances: