50x Humidity Indicator 6-Point 10-60% RH Brown-Blue

Moisture indicator card, 6 points, 10–60% RH

For checking room humidity during storage and in display cases

Dimensions: 102 x 38 mm
Packaging unit 50 pieces

Brown = dry
Blue (azure) = humid

Packaging unit 50 pieces

For climate verification (practical accuracy is less than 10% RH):
The paper strips are treated with different cobalt bromide solutions.