Silica gel with moisture indicator (brown gel) is commonly used as a desiccant in laboratories. Silica brown gel changes its color from brown to yellowish at water uptake from the atmosphere.
Bulk density: about 75
Loss on drying (150 °C): ≤ 2.0 %
Water absorption capacity (24 hrs.,80 % relative humidity): ≥ 20.0 %



