Humidity indicator card 31(Halogen free)

It is a card used to display the humidity status of the sealed space, and it is an environmental measurement product to detect whether the relative humidity in the sealed package is safe. The percentage data above or on the side of the circle is the relative humidity data indicated by the corresponding circle.

Most of the electronic components, precision optical components and other high-end electronic and instrument equipment are easily affected by moisture, resulting in product corrosion, sensitivity reduction and even irrecoverable damage. In order to prevent the products from being eroded and damaged by moisture, most of the products will adopt the combination of moisture-proof packaging to protect the products in the packaging stage of the final finished products and semi-finished products, and the humidity display card is a convenient and economical material to detect whether the humidity is within the controlled range. When the sealed bag is opened, the data read out by the color display on the humidity card can be used as the monitoring data in the sealed package The basis of whether the humidity is within the specified humidity range, at the same time, it can indirectly reflect whether the desiccant in the sealed package plays the role of moisture absorption.

The humidity card changes reversibly. If the humidity exceeds the corresponding humidity value, the color in the circle changes from dry color to moisture absorption color. If the humidity is lower than the corresponding humidity value, the moisture card that has become moisture absorption color can change back to dry color again, but it will take longer to change from moisture absorption color to dry color, and more importantly, enough desiccant is needed to restore the moisture card to dry color state.

It is used for packaging semiconductor, IC / integrated / circuit board (PCB), electronic components, sensitive components, organic materials, military supplies, optical instruments, metal materials, composite materials, medicine, storage and vacuum packaging of various products.