To make sure your moisture barrier bags and desiccants have completed their job, add a humidity indicator card. Moisture sensitive spots on the cards act to various levels of humidity with a visible color change from blue to pink. Take a look at the card when you open the bag. The card will indicate the humidity level of whatever you are packaging.
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Card
Spec.
1M
2 M
5 M
10 M
3 spot 30-40-50
Humidity Indicator Cards
(MS 20003-2)
(MIL-I-0035)125/can
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6 Spot Humidity
Indicator Cards
(AEC 826004 NE)
(MIL-I-8835)
(6 spot) 200/can
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3 spot 30-40-50
Humidity Indicator Cards
(MS123) 125/can
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SMD Humitector 4
Spot Indicator Cards
(HM-04 MIL-1-8835)
100/can
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Indicator Plugs
(R2156) For
flexible barrier bags.