Desco 13870 Humidity Indicator Card, 3" x 2", Blotting Paper, Blue, Pink, 100/Can

An integral part of a complete moisture barrier packaging assembly is the humidity indicator card. High relative humidity can cause significant, possibly irreparable damage to sensitive equipment, supplies, and products. To ensure dehydration measures work, humidity indicator cards measure the relative humidity (RH) inside sealed packages to allow immediate visual inspection of whether it has sustained unsafe humidity levels. - The humidity indicator card with a primary color of blue or pink. Store in dry, cool area and keep humidity indicators away from water, steam or out of direct sunlight. Replace desiccant bag after three openings of container. Ammonia gases will damage humidity indicators.