{"title":"Pneumatic Trough","description":"\u003cp\u003e\u003cspan\u003eA \u003c\/span\u003e\u003cb\u003epneumatic trough\u003c\/b\u003e\u003cspan\u003e is a piece of laboratory apparatus used for collecting gases, such as \u003c\/span\u003e\u003ca href=\"https:\/\/en.wikipedia.org\/wiki\/Hydrogen\" title=\"Hydrogen\"\u003ehydrogen\u003c\/a\u003e\u003cspan\u003e, \u003c\/span\u003e\u003ca href=\"https:\/\/en.wikipedia.org\/wiki\/Oxygen\" title=\"Oxygen\"\u003eoxygen\u003c\/a\u003e\u003cspan\u003e,\u003c\/span\u003e\u003cspan\u003e and \u003c\/span\u003e\u003ca href=\"https:\/\/en.wikipedia.org\/wiki\/Nitrogen\" title=\"Nitrogen\"\u003enitrogen\u003c\/a\u003e\u003cspan\u003e. Pneumatic troughs require a liquid such as water. Scientists also have used mercury in pneumatic troughs, but usually only for the collection of water-soluble gases. Health and safety issues surrounding mercury generally prohibit its use in modern-day pneumatic troughs.\u003c\/span\u003e\u003c\/p\u003e","products":[],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0761\/3241\/7794\/collections\/11.jpg?v=1764307984","url":"https:\/\/www.labend.com\/collections\/laboratory-plasticware-pnuematic-trough.oembed","provider":"Labend","version":"1.0","type":"link"}