SPUTNIK / SCIENCE PHOTO LIBRARY SPUTNIK / SCIENCE PHOTO LIBRARY
Editorial use only.
Gas mask designed by Nikolay Zelinsky. Nikolay Dimitrievich Zelinsky (1861-1953), Russian-Soviet chemist. He invented the first filtering gas mask, using activated charcoal, in 1915. Zelinsky was one of the founders of the theory of organic catalysis. Photographed at the Nikolay Zelinsky Apartment-Museum, Moscow, Russia.
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