Desco 13854 J-STD-033D 3-Spot Cobalt-Free Humidity Indicator Card, 5% 10% 15% RH (Can of 125)

An integral part of a complete moisture barrier packaging assembly is the Humidity Indicator Card (HIC). 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 Cobalt-free HIC contains chemically impregnated, humidity sensitive, indicating spots that will change color with moisture. The comparison bar is used to determine relative humidity of air. Select the indicating spot that most closely matches the color described on the cards. The measured relative humidity is the percentage indicated on the matching spot. The chemical reaction of the indicating spots is completely reversible; the spots will continue to change color as the moisture levels change.

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