Blue indicating silica gel is a highly useful variety of desiccant, available in a range of mesh sizes to meet the needs of its many possible uses in industry. It does not react with chemicals, and is tasteless, odorless and non-corrosive. It is extremely porous and can adsorb a large amount of water due to its vast amount of internal surface area. Since it is non-deliquescent, its size and shape always remain the same, and there are no chemical reactions or byproducts that result from the adsorption process. Even when saturated with water, the gel stays free-flowing, and dry. What makes blue indicating silica gel particularly useful is that, as it adsorbs water, it changes color, going from blue to purple to pink as the moisture is adsorbed.
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