SPUTNIK / SCIENCE PHOTO LIBRARY SPUTNIK / SCIENCE PHOTO LIBRARY
Water pollution analysis. Laboratory worker pouring a liquid from a round-bottomed flask into a measuring cylinder. She is measuring the pollution levels in potential drinking water from the Amur River, which forms the border between China and eastern Russia. The Amur is one of the longest rivers in the world. This is the central chemical and biological laboratory of the MP Vodokanal. Photographed in 2005, in Habarovsk, Russia.
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