Our most of Indicating Silica Gel Packets do not contain Cobalt Chloride, (Indicating Silica Gel that is usually blue in color which has been linked as being possibly carcinogenic to humans and been labeled as hazardous material in some countries). Our Indicating Silica Gel is reformulated to remove Cobalt Chloride (II) which provides our customers with a safe Indicating Silica Gel Packet to use. Our Indicating beads will turn from Yellow to Dark Green when the Silica Gel is about 60% absorbed with moisture. www.aquablue.in,
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