With active, interconnected pores forming a vast surface area, silica gel is the most capable desiccant for dehumidification. Used with other gels for best moisture adsorbing application. Silica gel is manufactured by chemical reaction of sodium silicate and sulphuric acid, and through purification and different treatment. Available in both semi-transparent, crystal like blue and crystal like clear .
Blue gel changes color with humidity.
It is often used as humidity indicator as well. Other bead size available at custom's specification, or in lump granule. Calcium gel is not F.D.A. approved. Fine gel used as food tracer for diet monitoring and research. Crush strength of the gel is a key factor.