Aspirator

An aspirator is a common piece of laboratory equipment. It provides a strong suction via the Venturi effect. It needs only a continuous stream of water to operate. The aspirator fits over a faucet and has a hose barb on one side. When water flows through the aspirator, gas will be sucked in through the hose barb. It is cheap to manufacture and operate.

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The strength of the vacuum produced is limited by the vapor pressure of water (24 mmHg at 25 degrees Celsius).

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Laboratory: A laboratory (often abbreviated lab) is a place where scientific research and experiments are conducted. A lab can hold space for one to thirty, or more, researchers depending on the size of the room and state mandated maximum occupancy limit....

Suction: Suction is the creation of a partial vacuum, or region of low pressure. The pressure gradient between this region and the ambient pressure will propel matter toward the vacuum....

Venturi effect: The Venturi effect is a special case of the Bernoulli effect, in the case of fluid or air flow through a tube or pipe with a constriction in it. The fluid must speed up in the restriction, reducing its pressure and producing a partial vacuum via the Bernoulli effect. It is named after the Italian ...