24.4 MB (1.7 MB compressed)
3500 x 2433 pixels
29.7 x 20.6 cm ⏐ 11.7 x 8.1 in (300dpi)
POWER AND SYRED / SCIENCE PHOTO LIBRARY POWER AND SYRED / SCIENCE PHOTO LIBRARY
Water purifier. Coloured scanning electron micrograph (SEM) of coconut shell charcoal from a water purification filter. The charcoal removes odours and gases from water passed through it. The rest of the purification unit (not seen) consists of an ion-exchange resin to remove ions such as metals, chlorides and sulphates, and a ceramic housing to filter out solid material. Magnification: x1340 at 6x7cm size.
Model release not required. Property release not required.