Desiccant is a drying agent used to lower the moisture content of air within a closed space, such as a sealed Moisture Barrier bag. Desiccant is packaged in fractional units in order to facilitate its usage with a variety of bag sizes.

One full unit of packaged desiccant will absorb the following quantities of water at equilibrium with air at 77°F (25°C): 3.00 grams @ 20% RH and 6.00 grams @ 40% RH, when tested to MIL-D-3464.

Note: The complete dry package concept of packaging for electronics requires three elements:

• Moisture Barrier Bags - to protect
• Desiccants - to absorb moisture
• Humidity Indicator Cards - to monitor performance

In order to provide a complete moisture barrier packaging system, desiccant must be inserted into the bag, prior to having the bag vacuum sealed. The recommended amount of desiccant is dependent on the interior surface area of the bag to be used. The reference table below indicates recommended minimum amounts of desiccant that should be used with Moisture Barrier Bags.