Outstanding Performance-But Take Caution!!!
Silica Gel is a great product for keeping your valuables dry- such as tools, clothing, jewelry, guns, coins and other valuables. This product works well as represented. It is basically, nothing more than a sack filled with silica gel beads within an outer cardboard box. I use this to keep an area of about 10 cubic feet dry and it seems to be working effectively.
What many purchasers may not be aware of however, is that the silica beads are impregnated with cobalt (II) chloride hexahydrate which is used as an indicator for the presence of moisture in desiccants. The beads eventually will change color from blue to pink when moisture is present in the air, signaling that it is time to recharge the beads (shown by an indicator card resting on the bottom of the container). Unfortunately, cobalt chloride is classified as a carcinogen by the IARC, and it is both toxic and corrosive when exposed to water. Therefore, you should not tamper with or expose the beads to water...
It works.
I bought a hydrometer to measure the humidity levels in an enclosed, air-tight cabinent and this stuff does
reduce the humidity. From 60% to 40% in my case. Adequate for my mold prevention requirement.
Simple and effective.
I use this in a medium sized gun safe. It works perfectly. As described, when the indicators change color all you have to do is bake in the oven to dry it out. I just did this for the first time a week ago. It worked as advertised, and it is back in my safe.
Simple and effective.
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