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[20 Packs] Dry & Dry Premium Cobalt Free Humidity Indicator Cards(6 Spots)
You are now bidding on Brand New 20 Pack of Cobalt Chloride Free Humidity Indicator Cards - 10-60% 6 Spot(20 Cards)
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- Card Dimension : 1.5"(3.8cm) x 4.5"(11.5cm)
- Cobalt Chloride Free Premium Quality - Eco Friendly Humidity Indicator Card
- 66 Spots Humidity Indicating - (10%/20%/30%/40%/50%/60% RH) - Clear Color Change
- Indicator Changes Green to Purple(Violet) - Green(Dry) to Purple(Humid)
- Major Electronics Companies use this cards
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