Packaged desiccants

Non-dusting and easy to use moisture protection

Packaged desiccants are low-cost, efficient desiccants that protect the contents of a properly sealed package or container during shipment and storage.


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What is a desiccant pack?

Desiccant packs are, as the name implies, packaged desiccants. The desiccants inside can be just about any type of desiccant but are most commonly either non-indicting silica gel or clay.

The packages themselves may be different materials, including Tyvek, kraft paper, and non-woven rayon and polyester blend bags. Desiccant packets are also sometimes referred to as sachets or pouches.

Benefits of Using Desiccant Packages

In comparison to bulk desiccants, packaged desiccants provide a barrier to prevent potential dusting contamination from the desiccant. Additionally, packaged desiccants are contained to their packages and are easy to change out or simply throw a few into a container.

Industry Applications

Packaged desiccants are commonly used to protect foods, pharmaceuticals, in the fashion industry and around the house. However, they are also frequently used in desiccators seen throughout the aerospace and space industries.

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FAQs

In desiccant terminology, a “unit” is a quantity of desiccant defined in the U.S. Military’s specification (MIL-D-3464E) for packaged desiccant products. Under this specification, a unit is the quantity of desiccant which will adsorb 3.00 grams of water vapor at 20% relative humidity or 6.00 grams of water vapor at 40% relative humidity at 77°F (25°C).

It may also be helpful to think of a unit as equating to approximately one ounce of material. More specifically, a one unit bag of Desi Pak® (clay) contains approximately 33 grams per bag, a one unit bag of Sorb-It® (silica gel) contains 26 grams per bag, and one unit bag of Tri-Sorb® (molecular sieve) contains 32 grams per bag.

Desiccants are generally packaged in bags, packets, or canisters. Packets are sometimes referred to as “sachets” or “pouches.”

Desiccants in bags are commonly referred to as industrial desiccants. They are primarily used by industry because their medium to large size enables them to adsorb moisture in heavy duty applications. However, these bags are commonly used in non-industrial applications as well.

Bagged desiccants are available in:

• Tyvek® (heat sealed)
• Kraft paper (heat sealed)
• Heavy, non-woven rayon/polyester blend (string sewn)

The term “bagged” desiccants commonly refers to any desiccant which is packaged by the unit.

Desiccants in packets or canisters are commonly referred to as pharmaceutical desiccants. They are primarily used by the pharmaceutical industry because of their small size. However, other industries, such as electronics, optics, and food packaging, utilize these packets and canisters as well.

Packet desiccants are available in:

• Tyvek (heat sealed)
• GDTII (heat sealed)

It depends. The amount of desiccant required is usually dependent on the following factors:

• Volume of air space to be desiccated
• Nature of the material to be protected
• Moisture surrounding the package
• Type of desiccant to be used
• Length of time for protection
• Atmospheric conditions (temperature and relative humidity) when/where the product is sealed and during subsequent shipment and storage

When AGM receives a call from someone looking for desiccant, our Desiccant Specialists will ask a number of questions to determine responses to the above information so they can calculate which type and size of desiccant will work best for the particular application.

You may use our Desiccant Calculator to determine the amount of desiccant for your application.

For further information on how to determine the amount of desiccant required for your application, please contact one of our Desiccant Specialists at 520-412-7511 or email us.

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It’s a lot, we know. If you’re looking for something specific or aren’t sure what you need, try searching through all products or give us a shout and we’ll help!