What is a Humidity Indicator Card?
A Humidity Indicator Card is a simple paper-based tool that changes colour to show the relative humidity inside sealed packaging or storage environments.
Why use a Humidity Indicator Card with desiccants?
Humidity Indicator Cards work alongside desiccants to confirm that moisture levels remain controlled, giving users visible proof that the packaging environment is protected.
How accurate are Humidity Indicator Cards?
Humidity Indicator Cards provide a reliable visual indication of relative humidity but should be used as a guide, not a precision instrument.
Can Humidity Indicator Cards be reused?
No. Once exposed to moisture and the colour change occurs, a Humidity Indicator Card should be replaced for continued accuracy.
Where are Humidity Indicator Cards commonly used?
They are widely used in electronics, medical device packaging, aerospace, and any industry where humidity control and monitoring are critical.