Environmental Ingenious Cobalt Chloride Free Halogen Free Humidity Indicator Card
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Environmental Ingenious Cobalt Chloride Free Halogen Free Humidity Indicator Card

  • The Humidity Indicator Card (HIC) offers a convenient, cost-effective, and safe solution for monitoring environmental humidity. By observing the color change on the card, we can easily assess the moisture levels inside the packaging. When the humidity reaches or exceeds the designated threshold, indicated by a transition from the DRY color to the WET color, it becomes evident that the desiccant is effectively maintaining the desired moisture level.
  • Crafted from 0.4mm thick blotting paper, these HICs ensure reliable performance. Customization options are available for humidity indicator cards with 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, and 90% humidity sensitivity. These cards conform to the standards set by JEDEC J-STD-033 and GJB2494-95, providing assurance of their quality and adherence to industry guidelines.
  • Blue to Pink


Product Description

  HICs are available in many configurations and can be customized for any number of applications. It meets military specifications(Mil-I-8835 and Mil-Std-2073- 1D Method 50) and JEDEC standards (J-STD-033A and anticipated revision J-STD-033B). One-spot,three-spot, four-spot and six-spot cards are currently available, in a range of customizable humidity levels.

Humidity Indicator Card

Typical applications

Industries: Semiconductors, Electronics, Military, Industrial  * Semiconductors
  • Electronics

  • Military components

  • Optical instruments

  • Preservation packaging

  • Bulk Packaging

  • Metals/Automotive parts

  • Produce
  • Museums and artifacts

  • Diagnostics

    Humidity Indicator Card

Humidity Indicator Card


  • Usage Requirements

The humidity indicator spots undergo a color change from blue (indicating dry conditions) to pink (indicating humid conditions) as the relative humidity changes. 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.

  • Storage and Handling

When storing the humidity indicators, it is advisable to keep them in their original container, sealed if possible, along with a desiccant. After the container has been opened three times, it is recommended to replace the desiccant. 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.

Humidity Indicator Card

Why choose us?

  • 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 OEM/ODM servicesWith 18 years of experience in the desiccant industry, Topcod takes pride in serving over 1500 customers as of 2019. Our extensive expertise has enabled and prioritize eco-friendly solutions.

  • 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 us to establish long-term partnerships with more than 100 renowned enterprises and brands. We offer OEM/ODM services and prioritize eco-friendliness in.

  • 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 our products. We are pleased to provide free samples and ensure fast delivery times.

  • At Topcod, we prioritize the highest standards of quality and compliance solutions to meet diverse needs.

  • 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.

  • Our impressive workshop display showcases over 200 desiccant machines. Our products have received SGS, MSDS, REACH, RoHS, and DMF free approvals. Moreover, we are registered under the silica gel REACH registration, demonstrating, ensuring efficient production. With sales and branch services in Foshan, Shanghai, Shenzhen, Hong Kong, and Germany, we can readily meet your requirements. our commitment to responsible manufacturing.

  • 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.

  • 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.

    Humidity Indicator CardHce81793a418544a1a1bdefc8979baef40



  • Q What's the lead time?

    A 5-7 days after payment checked, big qty will be negotiated.
  • Q Do you offer free sample?

    A Yes, free sample available, freight collected.
  • Q What is your MOQ?

    A  1 carton
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 Email: tp@topcod.com.cn
 Tel: +86-757-2339-5985
Address: No.10,1st Road, Jibei Industrial Zone, Longjiang, Shunde, Foshan, China
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