Silica gel beads, light micrograph

Silica gel beads, light micrograph

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Credit: ANTONIO ROMERO/SCIENCE PHOTO LIBRARY

Caption: Silica gel beads. Light micrograph of beads of non-hazardous self-indicating silica gel. Silica gel is a form of silicon dioxide synthetically obtained from sodium silicate. It is commonly used as a desiccant to absorb moisture in small enclosed environments, for example, inside packages of goods. Often a humidity indicator is included, so the beads change colour depending on the amount of water they have absorbed. Magnification: x11, when printed 10 centimetres wide.

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Keywords: 2, absorbent, bead, beads, chemical, chemistry, clear, colored, coloured, compound, cut out, cut outs, cut-out, cut-outs, cutout, cutouts, desiccant, device, duo, equipment, light micrograph, light microscope, no-one, nobody, pair, porous, silica dioxide, silica gel, technological, technology, two, vitreous, white background

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