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Humidity card
1st Classification:
1.Cobalt-containing humidity card:: to judge the humidity condition directly from color change. Its principle is based on color changes that produced by the cobalt chloride after water absorption, [Co (H20) 4 cl2] for blue [6] Co (H2O) 2 + is pink, The card is blue in dry humidity, if the circle color changes from blue to pink, indicate the humidity within the package reach or exceed the circle corresponds to the relative humidity value.
2.cobalt-free humidity indicator card does not contain cobalt chloride, health and environmental protection;It is a convenient and inexpensive way to detect humidity in the environment.The user can quickly judge the moisture and desiccant in the packaging by using the color on the card. If the humidity in the package exceeds or equal to the humidity value, the corresponding point on the card will change from the dry color into the absorbent color, so that the user can easily know the use effect of desiccant.
2nd Features:
1. Easy to use, easy to observe, quickly determine the humidity value
2. Large humidity indication range (cobalt: RH10% to RH100% no cobalt: RH10% to RH85%)
3. High sensitivity of humidity indication, ± 5% under relative humidity
4. Reusable (reuse after drying)
3rd Production specifications:
| Products | Humidity indication | Application description | The scope of application | Package |
| One point card | 8% |
If it shows blue, that means relative humidity is less than 8 percent, then it is in the safe humidity range. If it shows pink, that means relative humidity is above 8 percent, and then it's not safe, and it should change the desiccant in time. |
Big packaging, Bottled containers |
500 / can |
| Three point card | 5%、10%、15% | The color of the points on the card changes as the ambient humidity changes, and each point shows a relative humidity value from 5% to 15%, and the relative humidity can be accurately displayed to determine whether to replace the desiccant. |
High sensitivity electronic components, Military equipment, Optical device |
200/can |
| Three point card | 30%、40%、50% | The color of the points on the card changes as the ambient humidity changes, The point on the card changes color as the ambient humidity changes. The RH value of 30% is a warning signal. The RH value of 40% informs the user to change the desiccant. The RH value of 50% means that the humidity is too heavy. |
High sensitivity electronic components, Military equipment, Optical device |
200/can |
| Four point card | 10%、20%、30%、40% | It can accurately indicate 10% -40% relative humidity to determine whether the desiccant loss of efficacy. | For general packaging protection | 200/can |
| Six point card | 10%、20%、30%、40%、50%、60% | The color of the points on the card changes as the ambient humidity changes,from blue to pink.It can accurately display the relative humidity level to help determine whether the need to replace the desiccant. | For PCB, IC, microelectronics | 200/can |
4th Special requirements:
humidity card can be customized according to the customer requirements
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