When it comes to moisture-adsorbing agents, silica gel is a popular choice as a desiccant. However, did you know that not all silica gels are created equally? There are three primary types: white, blue and orange silica gel.
Indicating Desiccant
Both blue and orange silica gels are composed of silicon dioxide (SiO2), but their colors indicate different levels of moisture saturation. Blue silica gel contains cobalt chloride, which turns from blue to pink as it adsorbs moisture. On the other hand, orange silica gel contains a moisture indicator called methyl violet, which changes from orange to green when it comes in contact with moisture.
Non-Indicating Desiccant
White non-indicating silica gel is a highly porous, moisture-absorbing material absorb up to 30-40% of its weight in moisture that effectively controls humidity without changing color. Unlike indicating silica gel, which shifts colors to show moisture saturation, non-indicating silica gel remains white or translucent. At Pure Silica Gel Packaging, we provides you the best quality non indicating desiccant.
