Product Overview
This 6-dot cobalt humidity indicator card is a precision paper-based humidity monitoring device, designed to visually indicate the relative humidity (RH) level inside sealed packaging. It features clear color-changing response from blue (dry) to pink (humid) at six graded humidity points, complying with international industry standards including JEDEC J-STD-033B. Widely used for moisture-sensitive devices, it provides reliable, real-time humidity status monitoring with high sensitivity and easy observation.
Product Parameters (Table, Standard for Independent Station)
|
Item |
Specification |
|
Product Name |
6-Dot Cobalt Humidity Indicator Card (Blue to Pink) |
|
Humidity Range |
10%RH, 20%RH, 30%RH, 40%RH, 50%RH, 60%RH |
|
Physical Form |
Card Type |
|
Color Change |
Blue (Dry) → Pink / Lavender (Humid) |
|
Single Card Size |
38mm × 104mm |
|
Standard Compliance |
JEDEC J-STD-033B, RoHS, SGS Tested |
|
Package |
250 cards per can |
|
Main Application |
PCB, IC, electronic components, moisture-sensitive devices, semiconductor, military equipment, hardware, anti-moisture products |
Product Features
- High-sensitivity color change, clear and intuitive humidity reading at a glance
- Six-level graded detection (10%-60%RH), wide and precise humidity range
- Stable performance, fast response, accurate indication matching international standards
- Reusable: can be dried and restored to blue for repeated use
- Compact size, easy to place inside vacuum/sealed packaging
- Passed SGS testing, safe and compliant with global export requirements
How to Read & Use
1.The card displays six blue dots under dry condition, representing low humidity.
2.As ambient relative humidity rises, the indicator dots change color sequentially from blue to pink/lavender according to the RH value.
3.The last dot that remains blue indicates the current relative humidity level inside the package.
4.When the dot turns pink, it means the humidity has exceeded the marked value; replace desiccant or dry the package immediately.
5.The card can be dried in low-temperature, low-humidity conditions to restore blue color and reuse.
Identification Mark Description
sssssss
Reliable Quality & Versatile Applications
10% RH: DANGER IF PINK
Once this dot turns pink, the humidity is too high and risks damaging moisture-sensitive devices; replace desiccant at once.
20% – 50% RH: Graded Humidity Points
Sequential color change shows gradual humidity increase.
60% RH: READ AT LAVENDER (BETWEEN PINK & BLUE)
Read the humidity value when the dot shows lavender (intermediate color between blue and pink).
Storage & Handling Notes
1.Store unused humidity indicator cards in sealed iron cans or aluminum foil bags to keep indicators blue before use.
2.Replace the desiccant after the sealed package is opened three times to ensure detection accuracy.
3.Keep the card in a dry, cool, shaded environment; avoid direct sunlight, water immersion, high temperature and high humidity.
4.Do not fold, scratch or contaminate the indicator surface, which may affect color change performance.
Main Applications
Widely applied to moisture-sensitive industries and products:
- Semiconductor wafers & integrated circuits (IC)
- Printed Circuit Boards (PCB)
- Electronic components & precision equipment
- Military electronic devices
- Hardware & metal components
- Optical instruments & precision machinery
- Anti-moisture packaging & vacuum-sealed storage
- Composite materials, aerospace electronics, warehouse storage
Packaging & Shipping
Standard inner package
Sealed aluminum foil bag
Standard quantity
250 cards per sealed can
Outer package
Carton box, shockproof and moisture-proof
Transportation
Safe general logistics, avoid damp, extrusion and sun exposure during delivery
Quality Certification
The product has passed SGS testing and complies with international quality and environmental protection standards, suitable for global export and cross-border trade.
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