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Humidity indicator card
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Cobalt humidity indicator card

Type I: cobalt humidity indicator card is a convenient,cheap and safe method of detecting ambient humidity .Users can quickly determine the effects of humidity and desiccant products through color change humidity indicator card. If the package humidity greater than or equal to the humidity value, the corresponding point on the card will become moisture from the drying color color, it can be easy to learn to use this effect desiccant.


widely used in Electronic components packaging,Optical apparatus,Sensitive components,Various types of vacuum packaging,  IC / Integrated / board,Semiconductor packaging and testing,LED package, IC package, Computer equipment industry,biochips ect.


Production standard:

* 2004/73 / EC (EU environmental regulations)

* GJB2494-95 (People's Republic of China Military Standard)

* MIL-I-8835A (US military packaging standards)

* JEDEC (Electronic Components Industry Association Standard)


1.When the ambient humidity reaches a point or label values when the instructions on the humidity indicator card, the indication point will turn from blue to pink.

2.When the humidity decreases, the color of the card indicates the point will change back from pink to blue.

3.When the indicator points specified color into color when the point value is the current value of the humidity environment.


30% ; 5% ~ 10% ~ 15% ; 5%~ 10% ~ 60% ;10% ~ 20% ~ 30% ~ 40% ;10% ~ 20% ~ 30% ~ 40% ~ 50% ~ 60% and can be specified according to the specific needs of customers customized production.

Packaging and storage:


*Please replace the desiccant package later turned three times.

* Keep in a dry, cool place, away from direct sunlight and flooding.

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