Humidity Indicator Cards

Product Description

WHY USE THEM?
Humidity indicator cards are impregnated with a solution of cobalt chloride that has been carefully mixed to change color from blue through various shades of magenta - red, to a pink. These cards are not precision indicators. However, they are very good at telling you the maximum possible humidity in a container. For example if all of the dots are deep blue on a card which is a *0%- *0% card than you can be assured that the humidity in that container is below *0%. This is very important for some products and household items because as long as the humidity is below *0%, basic corrosion (rust) will not occur. Neither will mildew or mold in clothing or paper products. Finally, all sophisticated electronics: video cameras, computers, SLR cameras, sophisticated instruments etc. enjoy a much longer and more reliable life if they are maintained at a very low relative humidity. For example, at the bottom of this page are cards that were developed specifically for the electronics (computer chips) industry. These companies require that the humidity in their shipping packages be below *0% and as of the guidelines established in the fall of ***9 are striving to maintain humidity below 5%.
 
BENEFITS
As relative humidity(RH) increases, the color spots turn blue (dry) to pink (wet) . As RH
decreases, the color changes from pink, light purple to blue back.
Indicate humidity conditions in various types of barrier packaging
Often used in conjunction with a desiccant
Allow instant visual verification of product integrity
Approved for MIL - I - ***5 applications
LOW COST
Spots turn from Blue to Pink to indicate humidity levels
 
 
 
 
 
 
 
 
 
AVAILABLE CONFIGURATIONS

Note: Any size can be customized