Humidity Indicator Card 30 - 40 - 50

Humidity Indicator Card 30 - 40 - 50

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 electronics, a wedding dress heirloom, old photographs, or personal items, you will need a desiccant packet to do this.

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Humidity Indicator Card 30 - 40 - 50


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


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 electronics, a wedding dress heirloom, old photographs, or personal items, you will need a desiccant packet to do this.


Humidity Indicator Card 30 - 40 - 50.jpg

Humidity Indicator Card 30 - 40 - 50.jpg

Established in 1998, Chunwang is well-known as one of the leading manufacturers and suppliers of humidity indicator card 30 - 40 - 50 in China. During the past two years, we have introduced advanced equipment and technology into our factory. Please be free to buy our cheap products made in China.
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