PAUL RAPSON / SCIENCE PHOTO LIBRARY PAUL RAPSON / SCIENCE PHOTO LIBRARY
Automatic waste water sampling. Engineer adjusts the settings on a 24-hour automated water sampler. Rigorous tests are conducted on the samples to ensure that the waste water is clean enough to join unpolluted water sources. Photographed at Fawley Refinery, an oil refinery and chemical plant located in Fawley, Hampshire, UK.
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