Humidity Indicator Card (HIC) is a quick ,a low cost method, easy test to monitor the interior humidity conditions of the package , and easy to see if your desiccant is working inside a vacuum sealed (dry packed) moisture barrier bags or closed space.

Available in numerous configurations, cards are reversible and constantly indicate relative humidities as low as 5% and as high as 60%, depending on the application and need.

 

High relative humidity levels can cause irreparable damage to sensitive equipment, such as semiconductors and military instruments. While many manufacturers take the proper steps to protect their products from moisture damage, such as using desiccants and moisture barrier bags, it is important to also ensure that these steps are effective. Some products, such as electronic goods, often show no visual sign of moisture damage in the event of a breach in the dry packaging system.