T: +86-757-2339-5985
E: tp@topcod.com.cn
E: tp@topcod.com.cn
No.6, Pai Sha Industrial Road, Pai Sha Community, Longjiang Town, Shunde District, Foshan City, Guangdong Province, China.
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Blue to Pink
TOPCOD
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Our Environmental Ingenious Cobalt Chloride Free Halogen Free Humidity Indicator Cards are engineered to provide precise, visual moisture monitoring for highly sensitive components. By integrating seamlessly with Moisture Barrier Bags (MBB) and industrial-grade desiccants, these cards form a comprehensive, system-level moisture protection barrier. They strictly comply with rigorous packaging testing specifications, including the MIL-I-8835 standard for military and semiconductor applications, ensuring reliable performance under demanding conditions. Industries: Semiconductors, Electronics, Military, Industrial * Semiconductors
Electronics - Safeguarding intricate circuit boards and microchips from unseen moisture damage during transit and storage.
Military components - Ensuring mission-critical hardware remains in optimal condition despite extreme environmental shifts.
Optical instruments - Preventing condensation and fungal growth on sensitive lenses and precision mirrors.
Preservation packaging - Maintaining the integrity of archived materials and sensitive documents over extended storage periods.
Bulk Packaging - Offering a visual, low-cost method to verify the internal atmosphere of large shipments without relying on expensive electronic monitors.
Metals/Automotive parts - Protecting easily oxidizable surfaces from rust and corrosion before final assembly.
Produce - Monitoring ambient humidity to prolong freshness and prevent spoilage in agricultural supply chains.
Museums and artifacts - Providing continuous, non-invasive climate observation for priceless historical items.
Diagnostics - Securing the accuracy of sensitive medical testing kits by confirming completely dry storage conditions.
Our indicator cards are available in versatile configurations, including 3-spot, 4-spot, and 6-spot layouts (covering ranges such as 5%-60% RH), allowing you to precisely match the moisture sensitivity requirements of different components. The humidity indicator spots undergo a distinct color change from blue (indicating dry conditions) to pink (indicating humid conditions) as the relative humidity changes. This provides an intuitive, highly responsive visual inspection method, eliminating the need for expensive testing instruments while keeping quality control costs low. The current relative humidity is represented by a lavender color on the indicator spots. These spots will change within eight hours of exposure to a fluctuation in relative humidity. It is important to note that the humidity indicator spots are reversible, meaning that pink spots will revert back to blue when the air volume is dried. In case the spots turn pink or lavender, they can be restored to blue by placing them in a sealed container along with one unit (33 grams) of desiccant for a period of 48 hours. Before using the humidity indicator card, ensure that the highest indicator spot is blue, indicating the lowest humidity level. For optimal accuracy, it is recommended to use the humidity indicator card at a temperature of 73°F (23°C). Avoid direct contact with the indicator spots and rinse any irritated areas with clean water if contact occurs.
To guarantee long-term effectiveness during transit and warehousing, these cards are delivered in high-sealing vacuum moisture-proof packaging, typically housed in secure tin cans or robust aluminum foil bags. When storing the humidity indicators, it is advisable to keep them in their original container, sealed if possible, along with a desiccant. The metallic seal of the tin cans provides an excellent barrier against ambient moisture. After the container has been opened three times, it is recommended to replace the desiccant to maintain the internal microclimate. Store the indicators in a cool and dry area, away from any water or steam. Additionally, ensure that the indicators are kept away from ammonia gases, as exposure to such gases can render the indicators ineffective. Proper handling ensures that the chemical sensitivity of the spots remains perfectly calibrated for your next application.
With 18 years of experience in the desiccant industry and having served over 1500 customers as of 2019, Topcod has established itself as a trusted and reliable partner. We have developed long-term partnerships with more than 100 well-known enterprises and brands. At Topcod, we offer comprehensive OEM/ODM services and prioritize eco-friendly solutions, ensuring our indicator cards are 100% free of cobalt, halogens, and lead.
We take pride in providing free samples and ensuring fast delivery times. Our products have received various certifications including SGS, MSDS, REACH, RoHS, and DMF free approval. Importantly, we have registered our silica gel products under the REACH regulation, demonstrating our strict adherence to European environmental directives and ensuring complete safety for both the environment and handling personnel.
Our expertise extends beyond manufacturing as we actively engage in research and development. We actively participate in formulating and revising industry and national standards for desiccants and oxygen absorbers. Through collaborations with leading enterprises in various industries, we offer professional solutions tailored to overcome specific moisture control challenges.
At Topcod, we prioritize the highest standards of quality and compliance solutions to meet diverse needs. Our OEM/ODM customization capabilities allow clients to request exclusive corporate logo printing, specific dimension cutting, and customized humidity indication ranges, comprehensively elevating your brand's professional presentation.
As part of our commitment to innovation, we have independently developed wrapping paper for desiccants. Our Detuch paper is not only eco-friendly but also waterproof, dust-proof, smooth, and lint-free, offering a premium tactile feel that enhances the overall unboxing experience for end-users.
Our impressive workshop display showcases over 200 desiccant machines, ensuring efficient production to meet large-scale demands. Our products' SGS, MSDS, REACH, RoHS, and DMF free approvals underscore our commitment to responsible manufacturing and safe handling across all product lines.
Our dedication to research and development has allowed us to actively contribute to the formulation and revision of industry and national standards for desiccants and oxygen absorbers. We regularly organize colloquiums with leading enterprises across various industries to provide professional and tailored solutions.
Additionally, we have independently researched and developed wrapping paper for desiccants, specifically our Detuch paper. This paper is eco-friendly, water-proof, dust-proof, smooth, and lint-free, ensuring optimal performance and usability without shedding particulates onto sensitive electronics.
When it comes to production capabilities, our workshops are equipped with over 200 desiccant machines. We have established sales and branch services in Foshan, Shanghai, Shenzhen, Hong Kong, and Germany, allowing us to cater to your specific requirements and deliver exceptional customer service globally.
