DAVID HAY JONES / SCIENCE PHOTO LIBRARY DAVID HAY JONES / SCIENCE PHOTO LIBRARY
Paper mill quality control. Tests being carried out on paper pulp by a laboratory technician. Paper is manufactured using a series of stages that turn wood into paper pulp and then paper. The wood fibres are separated out, treated with chemicals, and then formed into paper. Other stages include coating the paper. Tests include monitoring the chemicals used, as well as testing the quality of both pulp and paper. Photographed at the Ortviken paper mill, Sundsvall, Sweden.
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