Pneumatic-trough sentence example

pneumatic-trough
  • Thus by heating spirits of salt he obtained "marine acid air" (hydrochloric acid gas), and he was able to collect it because he happened to use mercury, instead of water, in his pneumatic trough.
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  • A pneumatic trough is simply a basin containing water or some other liquid used for collecting gases.
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  • The lower end is bent into the shape of a hook, and dips into a pneumatic trough.
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