Silica gel is a synthetic product which has been used since 1940s to protect goods from damages caused by humidity.
It has a micro porus surface which is able to hold water particles.
DIN standards states that the absorption power of silica gel has to be 20 +/- 1% of its weight.
Desiccant clay
Activated clay (montmorillonite) is a natural desiccant used to protect industrial packaging. In order to be used as a desiccant, clay has to meet DIN 55473 standards. Due to its adsorption properties and to its...