Humidity Indicator Card, 3 Spot Reversible - 125pcs
30% 40% 50% RHSKU: HIC3-125
Humidity indicator cards are paper instruments designed to monitor relative humidity in a sealed environment. These 3 spot cards are reversible and indicate relative humidity as low as 30% and as high as 50%. Spots change from blue to pink.
Humidity indicator cards provide a simple, reliable, visual indication of the relative humidity within a sealed environment. As the humidity increases, the spots on the card change from blue (dry), through to lavender, to pink (humid).
While they are not precision indicators, they are useful for quickly determining if an environment has exceeded a particular humidity threshold. For example, if all of the spots are pink on a 30-50% card, then the humidity in that container has exceeded 50% RH. If all the spots are blue, then the humidity is still 30% or below.
It is recommended that the card is not placed in direct contact with metal objects as the chemical indicator in the card may cause corrosion of some metals.
- 3 spot reversible humidity indicator (30%, 40%, 50% RH)
- Spots change from blue (dry) to pink (humid).
- Designed for use within sealed environments.
- Complies with Mil-I8835 and Mil STD-2073-1
|Complies With||Mil-I8835 and Mil STD-2073-1|
|Type||Reversible Blue - Pink|
|Dimensions||80 x 50mm|
|RH Levels||30% 40% 50%|
|Shelf Life||3+ years in original packaging|