Humidity indicator card help in indicating moisture. The desiccants serve a wider array of applications than computers, electronics, and military products. The moisture indicator cards are rigid paper with “Relative Humidity” reading cards, reversible and without cobalt dichloride. They are applied in the packaging and provides a visual test of the humidity level within the packaging. The moisture indicator card are being able to indicate the rate of humidity from 5% to 95%, totally depending on the application. However, if the humidity level is too high then it's time to replace the desiccant and verify the quality of the product, has not been altered. Therefore, it is always advisable that the humidity indicator cards should be combined with desiccants, in any application.