Silica Gel Desiccant for Moisture Drying

Silica gel is said to be the best desiccant when it comes at absorbing moisture. Removing moisture from unnecessary places is very necessary as even a drop of it can become a reason for big loss. Silica gel is also of two types indicating and non-indicating. White silica gel comes under the category of non-indicating category where blue and orange are the indicating ones. 

Silica gel desiccant is used in various industries to keep the products environment dry and moisture free pharmaceuticals, food, electronics, textile, stationery, agriculture, leather, air, gas and many more. Apart from controlling moisture it is also used for the removal of air, gas and water. Once the product starts to react with moisture, (specially the consumable goods) it starts to lose its originality and effectiveness. By protecting it against moisture it is possible to avoid spoilage and growth of fungi, mold, bacteria and other micro-organisms which inhibits in moisture condition. So, using silica gel can increase the shelf life of the products and keep them fresh for a long term.

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Silica Gel Orange Indicating Serves Various Uses

Packaged food is the most common type of food that we consume today. Due to the fast paced lifestyle that we follow, storing food has become the only option for us. Storing food can be difficult as there are many problems involved in storing eatables. One of the main problems is spoiling of the food articles due to moisture. The presence of moisture will promote the growth of fungus mold, mildew and bacteria on food items. In order to prevent this, some particular desiccants are used to suck up the moisture and create a dry atmosphere inside the packages. There are many types of desiccants available in the market, but one of the safest and commonly used desiccants is silica gel.

Silica gel is a hygroscopic and can absorb moisture up to 40% of its weight. It is an USFDA approved, non-toxic, DMF Free, organic desiccant. Silica gel is hard, irregular and in the shape of granules or beads. It has a high ability to desiccate. As it exhibits a lower vapor pressure than the surrounding air, water molecules adhere to the gels surface. Standard white silica gel is non-indicating as remains physically unchanged even when it adsorbs moisture. Non-indicating silica gel is cheap and effective, available in bulk packs sachets. Size of Beads is 2-5mm, 3-5mm and 4-8mm.

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Types of Silica Gel Desiccant Sachets, Packets and Bags

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.

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