3-Spot Cobalt Dichloride Free Humidity Indicator Card
3-Spot Cobalt Dichloride Free Humidity Indicator Card

3-Spot Cobalt Dichloride Free Humidity Indicator Card

The Cobalt-containing Humidity Indicator Card (HIC305) is a compact, paper-based instrument designed to monitor and display relative humidity (RH) levels in sealed packaging environments. The percentage values marked above or next to the indicator dots represent the corresponding RH threshold for that dot.
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Product Parameters

 

Parameter

Specification

Product Name

Cobalt-containing HIC305 Humidity Indicator Card

Physical Form

Card Type

Humidity Detection Range

5% RH, 10% RH, 60% RH

Original Color (Dry)

Blue

Single Card Size

50×75mm

Application

PCB, IC, Optoelectronic Products & Electronic Components Packaging

Packaging

250 Cards per Can

 

Product Introduction

 

The Cobalt-containing Humidity Indicator Card (HIC305) is a compact, paper-based instrument designed to monitor and display relative humidity (RH) levels in sealed packaging environments. The percentage values marked above or next to the indicator dots represent the corresponding RH threshold for that dot.
This product fully complies with the JEDEC Standard J-STD-033B, meeting international regulatory requirements for moisture-sensitive device (MSD) protection across industries like electronics, semiconductors, and optoelectronics. It provides a reliable, cost-effective solution for verifying the effectiveness of dry packaging and desiccants.

 

Key Features

 

User-Friendly

Intuitive color change for quick, visual RH level assessment.

Wide Detection Range

Covers critical humidity points (5% / 10% / 60% RH) for MSD protection.

High Sensitivity

Delivers accurate, immediate response to humidity fluctuations.

Reusable Performance

Can be regenerated by drying (baking) for multiple cycles of use.

Reversible Color Change

Dots revert from pink back to blue as humidity decreases, enabling continuous monitoring.

 

Important Handling & Storage

 

Pre-Use Storage

Keep cards sealed in their original iron can or aluminum foil pouch until use to ensure indicator dots remain blue.

Desiccant Maintenance

Replace the desiccant inside the can after the package has been opened 3 times.

Ideal Storage Conditions

Store in a cool, dry area, away from direct sunlight and water immersion.

 

How It Works

 

Humidity Increase

As ambient RH rises, the indicator dots change from their dry state (blue) to their humid state (pink).

Humidity Decrease

The card is reversible-pink dots will revert to blue if the environment becomes drier.

Reading the RH Level

When a dot changes to the specified humid color, the value next to that dot indicates the current RH level of the environment.

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