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filter pump
noun
- a vacuum pump used to assist laboratory filtrations in which a jet of water inside a glass tube entrains air molecules from the system to be evacuated
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Example Sentences
Air is often partially exhausted from receivers or vessels by the use of a filter pump or aspirator.
From Project Gutenberg
In the filter-pump, water is used instead of mercury, the pump being connected to an ordinary water-tap.
From Project Gutenberg
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