HIC (humidity indication card)
- "HIC (Humidity Indicator Card)" is an indicator that allows quick and easy visual inspection of the relative humidity in a sealed packaging container. As the humidity increases, the color of the indicator surface changes from blue (before moisture absorption) to pink (after moisture absorption). The indicator indicating the degree of exposure of products sensitive to humidity exposure indicates moisture absorption at 5–10–60%, and divided into low and high moisture absorption sections. Its HIC card complies with the US military standard MIL-I-8835. It is cobalt free and easy to handle.
● Color change of indication surface according to humidity