Desiccant packs are packaged in Kraft Paper or Tyvek with the purpose of absorbing moisture, odors, and chemicals.  Not only can the actual moisture ruin a product, but it can also lead to mold, mildew, and rust.  The list of items that can be ruined by moisture is long, and includes many industries, including all kinds of electronics, different types of food, and machinery.  Because of its many uses, desiccant packs are used in the military, as well for personal and commercial use.  Due to its importance, we feel like everyone should know the history of desiccant packs.


There are three main types of desiccant packs: molecular sieve, clay, and the most popular, silica gel.  Silica gel is produced synthetically from sodium silicate and absorbs water, making it a great drying agent.  The use of silica gel dates back to the 1640’s, but was seen as a scientific curiosity.  Silica gel became popular during World War 1, where it was used to absorb gases and vapors in gas mask canisters.  It was then utilized in World War 2 to keep penicillin dry and protect military equipment and pharmaceutical supplies from moisture.


This silica gel is now put inside desiccant packs and used as a drying agent.  The great thing about desiccant packs are that they can be used more than once.  The life of a desiccant bag depends on its environment, but they can last up to 3 years.  At Edco Supply Corporation, we are the leading distributor of desiccant packs and have different bag sizes ranging from 1/6 unit to 80 units.  We also have other mil-spec packaging such as desiccant packs,anti-static bags, military tape, VCI paper, and moisture barrier bags.