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desiccant used to absorb moisture from the air to prevent damage to items such as electronics, leather goods, dry food and vitamins. To prevent damage caused by moisture in the air and desiccant are used to absorb moisture to the air to dry. There are three types of commercial desiccant, silica gel, bentonite and molecular sieve. The silica gel desiccant is more capacity available on the market, in the industrial, commercial and residential settings, and was absorbed by the Food and Drug Administration (FDA) for use in packaging dry food. Bentonite is taking a natural material, which is used in industrial environments, but not as often as silica gel. Molecular sieve desiccant is used in situations where moisture control is needed to extremely high temperatures.

bentonite is a natural absorbent granules. Even when fully saturated bentonite bouquet and remains feels dry. Absorbs up to 120 ° F (49 ° C), the effective drying at 77 ° F (25 ° C) and can be up to 25% of its weight in moisture. started when the temperature exceeds 120 ° F (49 ° C) increases, bentonite, it solves the moisture in the air. In accordance with the desiccant can be reactivated in order can be used repeatedly. Tyvek ® packaging, which is the dust better than other choices of packaging materials, tends to the preferred package for bentonite, as there are a lot of dust. />

molecular sieve desiccant is a substance of human origin. In contrast to the silica gel and bentonite, does remain the desiccant does not feel dry. Since the particles absorb molecular sieve moisture, they lose their status wet and dry feels solid. Among the three types of molecular sieve desiccant has the ability to absorb less with only 22% of their weight. Molecular sieve can absorb efficiently at high temperatures, can absorb moisture up to 450 ° F (230 ° C). Due to the change in physical properties and high temperatures at which it can hold, molecular sieve desiccant can not be reactivated and reused. Molecular sieves can be used with electronics because of the low dust performance, but is not approved by the FDA to be packed with food.

The capacity may be the primary consideration in choosing a desiccant, bentonite can absorb up to 25% of its weight, silica gel can absorb 40% and 22% molecular sieve. Bentonite has the highest yield of the dust of three children, to more expensive packages contain the dust. The silica gel and molecular sieves have very low yields of the dust that makes them dangerous for products that could use damaged by dust. There is little concern of the silica gel packets tearing that small balls are solid, non-toxic and easy to clean, even when fully saturated. Since bentonite is a dusty material to the scarcity of packages tear, dust covers products intended to protect. Cleaning saturated molecular sieve from a torn bag would be more difficult than cleaning beads of silica gel. Therefore require silica Tyvek ® packaging is the best choice for applications requiring minimal dust.

bentonite has the smallest area of the optimum temperature to a temperature above 120 ° F (49 ° C). Molecular sieves has the highest temperature absorption of three types of desiccant to a temperature above 450 ° F (230 ° C). Spectrum of silica gel, with a temperature above 220 ° F (104 ° C) means that it can be used for more applications than bentonite. Bentonite and silica gel can be reactivated by both heating the particles so that they release the absorbed moisture and at the same molecular sieve desiccant can be reactivated. If you look at the costs, it is important to examine not only how the cost per unit of drying agent, but also the absorption capacity of the desiccant. With the increased capacity available on the market, an optimal temperature range wide, and the ability to be reactivated, three silica gel desiccant is the most widely used drying agent on the market.