Humidity Indicator Cards – Cobalt Dichloride Free

3 and 6 Spot Cobalt Dichloride Free Humidity Indicator Cards

Environmentally safe humidity indicators for precise monitoring

Cobalt Dichloride (CoCl₂) free humidity indicator cards provide a cost-effective and environmentally safe solution for monitoring humidity levels within moisture barrier packaging. Designed specifically for use in the electronics and semiconductor industries, these cards are completely free from CoCl₂, a regulated chemical under ECB REACH directives, while maintaining complete accuracy to JEDEC J-STD-033B standards.

Each card features multiple indicator spots that change from blue to pink as humidity levels increase, providing a clear visual indication of internal moisture conditions. This early warning system helps protect delicate electronic components, ensuring they remain in optimal condition before being used in production or assembly.

• 3 spot – 125 per tin* (indicates 5, 10, 60 % RH)
• 6 spot – 200 per tin* (indicates 10, 20, 30, 40, 50, 60 % RH)

% RH stands for percent relative humidity;  it measures how much moisture is in the air compared to the maximum it can hold at that temperature. For example, 50% RH means the air holds half the moisture it could contain before becoming saturated.

*Stored in a re-sealable air tight tin.

Suitable for use in conjunction with silica gel desiccants and moisture barrier bags, these cards help maintain compliance and product reliability in dry packaging processes.

Browse our full range of humidity indicator cards.

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