Kettle limescale

Kettle limescale

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Caption: Kettle limescale. Coloured scanning electron micrograph (SEM) of fur or limescale (calcium carbonate and calcium sulphate crystals) from a domestic kettle. The fur is the result of repeated use of the kettle in a hard water area. Water hardness is a qualitative measure of dissolved calcium salts. When this water is boiled or evaporated the calcium salts precipitate to form crystals. Magnification: x550 at 5x7cm size.

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Keywords: calcium carbonate, calcium sulphate, chemical, chemistry, coloured, compound, compounds, crystal, crystals, hard water, images, kettle fur, limescale crystals, magnified image, microscopic photos, pollutant, scanning electron micrograph, sem, subjects, water pollution

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