Humidity Indicator Cards

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$1.69

1 each humidity indicator card per packet

10% 20% 30% 3 dot
0.67″ x 2.0″

In stock

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Description

Humidity indicator cards are impregnated with a solution of cobalt chloride that has been carefully mixed to change color from blue through various shades of magenta – red, to a pink. These cards are not precision indicators. However, they are very good at telling you the maximum possible humidity in a container. For example if all of the dots are deep blue on a card which is a 10%- 60% card than you can be assured that the humidity in that container is below 10%. This is very important for some products and household items because as long as the humidity is below 40%, basic corrosion (rust) will not occur. Neither will mildew or mold in clothing or paper products. Finally, all sophisticated electronics: video cameras, computers, SLR cameras, sophisticated instruments etc. enjoy a much longer and more reliable life if they are maintained at a very low relative humidity.

Humidity Indicator Cards:

The HIC should comply with MIL-I-8835 and, at a minimum, have three color dots with sensitivity values of 30% RH, 40% RH, and 50% RH.

 

Keep in mind that these cards will only indicate the relative humidity. If you want to keep the humidity low in your package whether storing powders, supplements, nootropics, electronics, photographs, or personal items, you will need a desiccant packet to do this.

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