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Humidity indicator cards are an inexpensive way to quantify relative humidity levels
inside sealed packaging. They are available in many configurations and used in many
applications, especially military and semiconductor. The most common humidity
indicator cards change color from blue (less than indicated RH level) to pink (greater than
indicated RH level). Edco stocks 3 spot cards which read 30%, 40%, and 50% relative
humidity and 6 spot cards which read 10%, 20%, 30%, 40%, 50% and 60% relative
humidity. The 3 spot cards are ideal for smaller packages due to their size.
Humidity indicator plugs are ideal for monitoring humidity levels in a sealed package
without exposing goods to external elements. The plugs are two parts attached on an
outside wall of the container with a screw. The plugs are made out of aluminum and are
equipped with viewing windows to provide clear readings. For more information on
humidity indicator cards and plugs contact your representative or click here.
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