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Dirty plughole. Coloured scanning electron micrograph (SEM) of the plughole from a kitchen sink. It is encrusted with limescale, which has been scraped away at upper left and lower right. Limescale is a deposit left when water rich in dissolved minerals evaporates. Limescale traps dirt and may encourage the growth of bacteria. Magnification unknown.
May 13th, 2013
Viewed 5 Times - Last Visitor from Beverly Hills, CA on 10/28/2014 at 1:31 PM
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