Silicon Dioxide Silica Gels, Color : Blue, Purity : 99.5%

Silica gel (silicon dioxide) is a colorless , granular, porous material with desiccating properties, made out of sodium silicate. It can absorb 15-40% by weight of moisture depending on the relative humidity of the exposed atmosphere. 40 % absorption at 100 % humidity. Standards call for 27 % moisture absoption capacity at standard atmosphere