HI-1 - Single Level Humidity Indicator Card

Short Description



This single colour-change Humidity Indicator Card is Cobalt Chloride Impregnated and housed inside a printed envelope.

The card changes from Blue (Dry) to Pink (Wet) and commonly used in packaging application as a visual indication of rising Relative Humidity Levels.


The envelope is printed with instructions and also a colour chart to aid reading.

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