Know How Desiccant Packets Can Effectively Control Moisture

A desiccant is defined as a substance that has the ability to desiccate (to dry or dehydrate)

. Owing to the hygroscopic properties of certain substances, they can be effectively used as desiccants in applications where moisture or vapor needs to be adsorbed.

You will notice that most desiccants come in the form of granules or powders. This form is preferred as it allows for a larger surface area, thus enabling the desiccant to soak up higher levels of moisture. However, these loose materials cannot be used in this form hence the use of desiccant packets is widespread. Right from small sachets that are found in leather footwear packages to large sacks that are kept alongside tons of cargo in a ship, desiccants packs are available in varying sizes.

There are several firms that offer customized packing solutions to OEMs, packaging firms and transportation firms. The grades and mesh sizes of the packs are entirely made according to the specifications of customers. Some of the most common sectors that demand custom packed desiccants are electronics, pharmaceuticals, food and beverage manufacturers, movers and transport agencies among others.

Desiccant packets have proven to be very effective in controlling the relative humidity in a closed environment. There are several different types of desiccants that can be packaged to meet specific applications. Heres an overview of some of the commonly used desiccants:

Silica gel: Though it is referred to as gel, these are actually hard granules that show excellent adsorption properties. This material is actually a synthetically manufactured version of silicon dioxide. Indicating silica gel is slightly different from regular silica gel in that it changes color when it is begins to reach its full adsorption capacity. When the color has fully changed, the desiccant can either be replaced or regenerated.

Clay: This is a naturally occurring material and can be easily regenerated, thus providing very cost-effective application as a desiccant.

Molecular sieves: These materials have a very dense and intricate network of pores, thus adsorbing moisture and vapors in its empty cavities. This is in fact, a manufactured version of Zeolite and shows exceptional adsorption properties even in the most demanding conditions. However, it is one of the more expensive desiccants available today.

Activated charcoal: This material is also commonly seen in the form of desiccant packets. Activated carbon shows exceptional performance when used as an odor removal substance, and it placed along with meat and vegetables to keep them fresh longer.

With each desiccant displaying unique adsorption properties, it is important to discuss your exact application with a desiccant manufacturer. Right from a 1 gallon can to a 2000 lbs sack desiccant packets can be availed in various sizes and weights to solve your moisture control concerns.

by: Paige Donahoe

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