Reversible Cards

These reversible humidity indicator cards are color-change indicators and is reversible as required by Military Specification MIL-I-8835. As the humidity increases, the chemically impregnated spots change from a blue color , through a lavender, to a pink color (HUMID). As the humidity decreases, the spots change from a pink color , through a lavender, back to a blue color.


13 Item(s)