Humidity Indicator Cards - 6 Spot

from 1.80

Reversible & constantly indicates relative humidity
10%, 20%, 30%, 40%, 50%, 60% indicator spots

Pack Size:
Add To Cart

For larger quantities, please contact us


Humidity Indicator Cards are small, paper instruments designed to monitor relative humidity levels. These 6 spot cards are reversible and constantly indicate relative humidities as low as 10 percent and as high as 60 percent, they change from blue to pink