Colorimetric Moisture Indicators (CMIs) provide a reliable and visual indication of moisture levels. These indicators are composed of a moisture-sensitive material that undergoes a color change upon exposure to water. CMIs offer a convenient and cost-effective method for assessing moisture levels in various applications, including:
CMIs consist of a thin, porous film impregnated with a water-sensitive chemical. As moisture enters the film, it interacts with the chemical, causing it to undergo a color change. The color change is directly proportional to the relative humidity (RH) or moisture content of the environment. The color change is reversible, allowing CMIs to be used multiple times.
These indicators provide a one-time measurement and are typically used for short-term applications, such as monitoring moisture levels during storage and transportation.
These indicators can be regenerated and reused multiple times. They are suitable for long-term monitoring and are often used in industrial settings.