Integra Humidity Indicator

Integra™ Boost™ humidity indicating cards are an inexpensive way to quantify relative humidity levels accurately. They are simple to use, allowing instant visual verification of product integrity. The spots turn from blue to pink to indicate humidity levels. When combined with Integra™ Boost™, you will surely leave any moisture problems behind. They measure 50% - 70% humidity. 10 cards per pack.