Wednesday 2 April 2014

Silica Gel Crystals
There is various type of air drying desiccants available in the market. The most popular and widely used desiccant is silica gel. It also comes in three variants that is orange, white and blue. Among the three orange and blue are termed as the color changing gel. This is because after absorbing moisture, the granules changes its color indicating that the desiccant granule is contaminated and needs to be replaced. Another reason which makes it more popular is that once it is fully contaminated it can be reused again by heating it over 300oC. The other type of desiccant is molecular sieves. Its properties are quite similar with that of silica gel. Advantage of using it over other desiccants is that its absorption speed is more and has more resistance against contamination.
Silica Gel Beads

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