Desiccant are said to be those hydroscopic substance which is used as a drying agent or we can say it has the capacity to desiccate. Having amazing absorbing capacity it is used in all those places where moisture has to be absorbed because the some particular item needs dry environmental conditions, in order to retain its original state. There are various types of desiccants in market which is either in the form of granules or powder. These forms are mostly preferred because in this way it gets more surface area for absorption and allows absorption of moisture at higher levels. Although these desiccants cannot be used in loose form and thus it is necessary to use them in packets. Starting with small sachets used in leather jackets and empty cans or bottles to big sacks which has to be used in ships while transportation, desiccant packets are found in various sizes.
Based on the purpose of its use, it is of various types like silica gel packets, clay, molecular sieves packets and activated carbon packets. Describing specifically about each desiccant silica gel is used in various refrigeration and pharmaceutical industries used to store capsules and tablets and liquid syrups. It is made from silicon dioxide and thus can be harmful id comes if direct contact with the product. That is why it is used in packets which make it absolutely safe to use. It has the capacity to absorb 40% moisture of its weight. The best thing about these gel beads is that these are reusable. Once these graduals are fully saturated with moisture vapor it can be renewed by heating it over 300oF. It is the most widely used desiccant. The other type of desiccant which is used widely used is molecular sieves. It has dense network of pores which absorbs moisture into its pores. It is another version of zeolite which shows exceptional properties of absorption.
Next is activated carbon packet. It is mostly used for the purpose of odor removal. It is widely used with meat, fruits and vegetables. This is because it helps to retain the freshness of food items. Finally, the last one is clay packets. Clay is a natural substance, so it assures us that it will never have any side-effects and absolutely non-toxic. Also it is very cost efficient method of absorbing moisture. As deferment type of desiccant have different properties it is very important to decide your exact purpose of use.
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