You can check the humidity inside an airtight container or pack from the outside.
Excellent impact resistance. Model number: Cobalt-free
Reaction humidity: 10-20-30-40-50-60% RH (6 points)
Accuracy: ±5% (25℃)
Discoloration: Yellow to green
Size: Approx. 39 x 100 mm
Quantity: 1 can (150 pieces)
Reversibility
RoHS2 (EU)2015/863 compliant [About RoHS]
