Silica Gel desiccant can be dried and recharged to be reused repeatedly. Here is a detailed tutorial about how to dry silica gel beads and packets.
Silica Gel is an adsorbent, which removes moisture from the air. It can be used to keep the Relative Humidity (RH) of an enclosed space low, and in this way, prevent fungus growth on camera lenses. Over time, Silica Gel becomes saturated with the moisture that it has adsorbed, and loses its ability to continue removing humidity from the air.
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