The indicator spots on the cards change colours as the humidity increases or decreases. Being cobalt dichloride free they meet ROHS, REACH and WEE directive regarding hazardous substances. Complies with IPC/JEDEC J-STD-033.
Cobalt Dichloride Free Humidity Indicator Card
From £25.66
Humidity indicator cards are used to determine whether products have been exposed to moisture above recommended storage levels.

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