Foshan Weller Moisture Proof Technology Co., Ltd. is one of the most experienced manufacturers and suppliers of cobalt free humidity indicator card in China. If you're going to wholesale high quality cobalt free humidity indicator card, welcome to get free sample and discount information from our factory. We also accept customized orders.
Noted: We can custom for specific application. Accept OEM and ODM orders.
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Specification |
Description |
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Product Name |
Cobalt Free Humidity Indicator Card |
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Material |
Cardboard or paperboard treated with humidity-sensitive chemical indicators |
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Cobalt-Free Composition |
It does not contain cobalt-based compounds. |
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Humidity Levels |
10%, 20%, 30%, 40%, 50%, 60% or per customer requirement |
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Color Change |
Changes color upon reaching specified humidity levels (e.g., blue to pink, brown to green) |
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Operating Range |
Relative humidity (RH) from approximately 5% up to 60% or higher |
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Accuracy |
±5% RH at controlled temperature conditions |
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Temperature Range |
-20°C to 50°C or broader |
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Size |
Standard formats, e.g., 2" x 3" or customizable options |
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Shelf Life |
Typically 1-2 years when stored in a sealed, dry environment |
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Application |
Monitoring humidity in packaging for electronics, optical instruments, and more |
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Packaging |
Packed with desiccants, often in moisture-proof sealed pouches |
Description
This cobalt free humidity indicator card is an environmentally friendly humidity detection tool. It is specially designed to monitor relative humidity levels in sealed environments. Unlike traditional cobalt-containing humidity indicator cards, it does not contain harmful cobalt chloride chemicals. It meets international environmental and health safety standards. The cards have dots printed on them that show different humidity percentages. The dots will change color according to the humidity conditions. The color change intuitively indicates the humidity of the current environment. This card is widely used in the packaging of electronic products, optical equipment, industrial materials etc., to monitor the humidity of the storage environment and to protect product quality.
Cobalt Free Feature
Our cobalt free humidity indicator card is designed without the use of cobalt compounds. Thus, it can achieve a more environmentally friendly application. The biggest advantage is to reduce the potential harm to the environment and human health, as cobalt is considered a hazardous substance. In addition, it also meets stricter environmental regulations and standards. Therefore, it is more suitable for use in areas with high health and environmental requirements. By adopting cobalt-free chemicals, these cards still have accurate humidity detection functions. Therefore, this product provides a more sustainable choice without sacrificing performance.
Applications
This cobalt free humidity indicator card is mainly used in products and fields that are very sensitive to humidity, such as semiconductors, PCBs, military supplies, medicines, warehouse storage and other packaging fields. This indicator card displays the relative humidity changes in the packaging environment through color changes to protect the quality and integrity of related products. At the same time, since it does not contain cobalt dichloride banned by the EU, its environmental protection characteristics make it comply with green product specifications, RoHS standards.
Custom Service
We provide customized cobalt free humidity indicator card services. As a professional manufacturer and supplier, we focus on manufacturing environmentally friendly indicator cards that do not contain cobalt, a carcinogen. This card is suitable for packaging of electronic products, medical devices, precision instruments and other humidity-sensitive products. You can visually display the humidity level through color changes. We support the design of cards according to customer needs, including customization options such as size, humidity range, brand logo, etc. At the same time, it meets environmental and safety standards, which is very suitable for companies that need to reduce their environmental footprint or meet specific regulations.
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