This silica gel blue is a bead or granule that has been washed with a concentration of cobalt chloride (a heavy metal salt). The cobalt chloride is a deep-blue color when dry and turns from blue to pink as it becomes saturated.

Silica Gel Blue In Nelspruit

Silica Gel Blue Manufacturers In Johannesburg

Silica Gel Blue Suppliers In Vereeniging

Silica Gel Blue Exporters In Pietermaritzburg

South Africa - Silica Gel Blue.

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