3M Humidity Indicator Cards (HICs) are printed with moisture sensitive spots which respond to various levels of humidity with a visible colour change from blue to pink. The humidity inside dry packed barrier bags can be monitored by including an HIC inside. When the bag is opened, the card can be examined for proper dryness inside the bag. This indicates that the barrier bag and desiccant functioned correctly.
Attribute
Value
Sign Description
Humidity Indication
Text Message
Humidity Indicator
Text Language
English
Height
3 in
Material
Blotting Paper Impregnated With Cobaltous Chloride
