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 | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Steger, Volker |
Bildgröße: | 2848 px × 2290 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |