PAUL RAPSON / SCIENCE PHOTO LIBRARY PAUL RAPSON / SCIENCE PHOTO LIBRARY
Waste water sampling. Technicians carrying out manual spot sampling using a bottle on a string. Rigorous tests are conducted on these 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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