The humidity level can be determined by the amount of blue crystals that dissolve after 24 hours or more of exposure to humidity.
Once colored, it will not return to its original state, and you can check the highest relative humidity reached. Reaction humidity: 50, 60, 70, 80, 90% RH (5 points)
Accuracy: ±5%RH (at25℃)
Operating temperature range: Room temperature
Reaction color: Blue color spreads around
Size: 105 x 75 mm
Quantity: 1 can (50 pieces)
*Storage method: Store in a cool, dry place.
*Expiration date: 1 year after manufacture (unopened)
Irreversibility
RoHS2 (EU)2015/863 compliant [About RoHS]
