Humidity indicator cards are small, paper instruments designed to provide visual proof of the relative humidity levels within a given environment. These 6 spot cards are reversible and constantly keep track of humidity levels as low as 10% and as high as 60%, changing colour from blue when it’s dry, to pink when it’s humid.

If the card indicates high levels of humidity, users know to check their packaging and inspect their products in case of damage – a great and inexpensive way to assist you in keeping your valuables protected.




Type Reversible 6 Spot, 10-60% RH
Colour Blue - Pink
Material Blotting Paper
Printing Heavy Black on White
Dimensions 39.7 x 120.7 mm
Meets Requirements MIL-1-8335 and MIL-P-116 Method II​​​​​​​


Be The First To Review This Product!

Help other Silica Gel Store users shop smarter by writing reviews for products you have purchased.

Write a product review

We Also Recommend

Others Also Bought