Brown Cobalt‑Free Humidity Indicator Card
Product Demand
Why use Brown Cobalt‑Free Humidity Indicator Cards?
Most electronic components, precision optical components and other products are easily affected by moisture, leading to corrosion, reduced sensitivity, damage, etc. To prevent products from being corroded and damaged by moisture, Brown Cobalt‑Free Humidity Indicator Cards are monitoring instruments that monitor relative humidity (RH) levels in sealed environments.
Product Description
Product Parameter
[Product name]Brown Cobalt‑Free Humidity Indicator Card
[Product Points] 6 points
[Product packaging] 25 pieces/pack, 10 packs/can
[Product Dimensions] 36mm*104mm
[Product Style] Round-corner(Customizable)
[Product Color] Changes from brown to blue
[Humidity value] 10%, 20%, 30%, 40%, 50%, 60%
[Scope of application] Widely used in moisture-proof packaging of optical instruments, electronic products, medical care, highly sensitive electronic components, PCB, IC, LED and other humidity-sensitive components.
Product Introduction
Special for humidity sensitive components
Humidity indicator cards are compact paper‑based indicators for monitoring relative humidity levels within sealed spaces. The percentage figures above or beside each circle represent the corresponding relative‑humidity reading for that circle. Adopting a cobalt‑free formula for safer usage.
Widely applied to sealed‑packaging scenarios for electronic components, precision optical parts and other high‑end electronics and instruments.
applications
Wide range of applications
It is widely used in moisture-proof packaging of optical instruments, electronic products, medical care, highly sensitive electronic components, PCB, IC, LED and other humidity-sensitive components.
Electronic component humidity monitoring
| Precision Accessories Humidity Monitoring
| Electronic product humidity monitoring
|
PCB circuit board humidity monitoring | IC electronic components humidity monitoring | Electronic digital humidity monitoring |
Product Features
High sensitivity and rapid judgment
The Brown Cobalt‑Free Humidity Indicator Card is made through technological processing. The percentage data above the circle corresponds to the relative humidity indicated by the circle. The humidity indication is highly sensitive and can quickly determine the humidity value.
Large indication range, precise color change
The humidity indication range is large (10%-60%), and when the humidity around the humidity indication card rises to a certain value, the color of the corresponding circle on the indication card will change.
Color reversible, reusable
The color in the circle of the Brown Cobalt‑Free Humidity Indicator Card is reversible. When the surrounding area of the Brown Cobalt‑Free Humidity Indicator Card dries, the color in the circle will return to its original color. It has a long service life and can be reused after drying.
Cobalt‑Free Formula for Safe Use
This product is cobalt‑free and free of substances such as cobalt chloride. Suitable for packaging of electronic components and precision products for safer application.
⚠️ Tips: Rounded‑corner design, resists cutting or puncturing packaging bags and products.
Canned packaging, easy to use
Keeping the instruction card sealed in a vacuum packaging jar and adding desiccant can not only better prevent air penetration, but also make it easy to use.
Customizable to Meet Your Needs
Humidity indicator cards can be customized to meet diverse application needs, including size, specifications, and packaging printing.
Brown Cobalt‑Free Humidity Indicator Card comparison table
※The color of this table is for reference only, the specific color is subject to the actual product
Product number | Dry state | Current | Wet state |
Cobalt-free type A | Brown | Light Blue | Blue |
User manual
Instructions for use of Brown Cobalt‑Free Humidity Indicator Card
Place the humidity display card in the sealed space where the surrounding humidity is to be tested
| Check the color change of the corresponding humidity point to determine the humidity of the surrounding environment | Take appropriate action based on indicated humidity conditions
|
1. When using the Brown Cobalt‑Free Humidity Indicator Card, do not touch the indicator ring directly with your hands.
2. Please use according to the usage quantity and avoid long-term (30 seconds) exposure to the air. If it changes color before use, please dry it before use (it can be dried in a drying oven until it completely turns blue/ brown/yellow).
3. As the humidity of the surrounding environment increases, the indicator point on the humidity card will change from dry color to wet color.
4. The humidity card is a reversible card, that is, the wet color indicator point will change back to the dry color as the humidity of the surrounding environment decreases.
5. When the color of the indicator point changes to the specified color, the value of the point is the humidity value of the current environment.
Precautions
Precautions for storing Brown Cobalt‑Free Humidity Indicator Cards
1. Please keep it sealed when not in use.
2. The Brown Cobalt‑Free Humidity Indicator Card is sealed and stored in the packaging iron can, and desiccant is placed in it. Please replace the desiccant after the package is opened three times.
3. Store in a dry, cool environment, avoid direct sunlight and water immersion.
4. Please place it away from sunlight, water and high humidity and out of reach of children.
5. When the humidity in the environment becomes low, the color effect is reversible and you can continue to use it.
6. Depending on the quantity used, a small drying box can be used to ensure that the Brown Cobalt‑Free Humidity Indicator Card is hot-packed during use. This can prevent the Brown Cobalt‑Free Humidity Indicator Card from getting damp during use and ensure the quality of use.
7. Do not touch the indicator dots, and it is prohibited to clean any display area with water.
