What Is An Aspirator Used In Chemistry Laboratory Apparatus? An aspirator is also known as an eductor-jet pump ,or a filter pump. T his is a device that is able to produce a vacuum by using the venturi effect. In an aspirator there is a fluid (either liquid or gaseous) that flows through a narrowing tube.
What is an aspirator?
An aspirator, also called an ejector or filter pump, is a device that produces vacuum by means of the Venturi effect. In an aspirator, fluid (liquid or gaseous) flows through a tube which then narrows.
What happens to the fluid in an aspirator?
In an aspirator, fluid (liquid or gaseous) flows through a tube which then narrows. When the tube narrows, the fluid's speed increases, and because of the Venturi effect, its pressure decreases. Vacuum is taken from this point.
How does a vacuum aspirator work?
T his is a device that is able to produce a vacuum by using the venturi effect. In an aspirator there is a fluid (either liquid or gaseous) that flows through a narrowing tube. Once the tube starts narrowing, the fluid's speed is able to increase.
What is a water aspirator on a faucet?
A water aspirator is an inexpensive attachment to a water spigot, and the nub on the aspirator connects with tubing to the vessel to be evacuated (Figure 1.73b). As water flows through the faucet and the aspirator, suction is created in the flask.
What is the function of aspirator?
A suction machine, also known as an aspirator, is a type of medical device that is primarily used for removing obstructions — like mucus, saliva, blood, or secretions — from a person's airway.
What is an aspirator?
Definition of aspirator : an apparatus for producing suction or moving or collecting materials by suction especially : a hollow tubular instrument connected with a partial vacuum and used to remove fluid or tissue or foreign bodies from the body.
What is laboratory aspirator?
Laboratory aspirators are a safe way to dispose of dangerous pathogens, critical liquids, and any class III or IV biohazard in a self-contained waste collection system. Laboratory aspirators have a built-in membrane pump that automatically switches on when vacuum pressure is applied.
What is the function of a vacuum aspirator chemistry?
0:598:44Lab Equipment: Aspirator Vacuum Pump - YouTubeYouTubeStart of suggested clipEnd of suggested clipThe jet shoots down this tube and thanks to the venturi effect it pulls any gases with it andMoreThe jet shoots down this tube and thanks to the venturi effect it pulls any gases with it and creates a vacuum. You. Will access the vacuum through this port on the side.
What is aspirator bottle?
Aspirator bottles are used to sediment solid or suspended particles in liquid materials. The liquid is filled into the container. After some time, the heavier solid particles deposit at the bottom of the aspirator bottle and the stopcock is opened to release the liquid into a collection flask.
What is a hydraulic aspirator?
noun. an apparatus or device employing suction. Hydraulics. a suction pump that operates by the pressure differential created by the high-speed flow of a fluid past an intake orifice.
How do you use aspirator in chemistry?
0:492:00How to Install a Water Aspirator - YouTubeYouTubeStart of suggested clipEnd of suggested clipFrom being sucked back into the line connect the trap with another tube to the vacuum flask. MakeMoreFrom being sucked back into the line connect the trap with another tube to the vacuum flask. Make sure everything is tight. So that vacuum is as strong as possible. Okay once you've checked all seals.
How do you make an aspirator?
2:0710:37How to Build an Aspirator - YouTubeYouTubeStart of suggested clipEnd of suggested clipAnd 2 mil centrifuge tubes. The first thing you're going to make is the aspirator body or theMoreAnd 2 mil centrifuge tubes. The first thing you're going to make is the aspirator body or the cartridge receiver.
What is the significance of water aspirator during filtration?
This vacuum aspirator creates the suction that pulls liquid through the filter and filter paper. hose is part of the filtration system and should be heavy enough to prevent pinching or collapse under external atmospheric pressure.
What is aspirator pressure?
Suction pressure is a negative difference in pressure generated between two points which draws a gas or a liquid from a higher to a lower pressure state.
What is vacuum system in chemistry?
A vacuum system produces a source of reduced pressure which is useful in many organic chemistry applications. In the teaching labs, the vacuum system is used for vacuum filtration, solvent removal, rotary evaporation, and vacuum distillations.
What is vacuum filtration chemistry?
CHEMISTRY GLOSSARY Vacuum filtration is a technique for separating a solid product from a liquid. The mixture of solid and liquid is poured through a filter paper in a Buchner funnel. The solid is trapped by the filter and the liquid is drawn through the funnel into the flask below, by a vacuum.
What is an aspirator?
Medical Definition of aspirator. : an apparatus for producing suction or moving or collecting materials by suction especially : a hollow tubular instrument connected with a partial vacuum and used to remove fluid or tissue or foreign bodies from the body.
Can you use a nasal aspirator to press papaya seeds?
Recent Examples on the Web Use the nasal aspirator and press it firmly against the top hole. — Rachael Lagarde Walker, Southern Living, 31 Mar. 2021 There’s a slight slurping sound as the papaya seeds are sucked into the aspirator’s main chamber. — Meghan Racklin, Glamour, 22 Jan. 2019
What is an aspirator?
The aspirator ( Fig. 1.22 ), known in England as a “pooter,” is a convenient and effective device for collecting small or highly mobile insects and mites. (The device was named in honor of Frederick W. Poos, an American entomologist who employed the device to collect insects belonging to the family Cicadellidae.) The following materials are needed to construct an aspirator:
How do aspirators work?
Aspirators have been used for many years to separate insects and other contaminants from grain and other commodities by using differences in their size, density, and shape. Falling objects increase in speed until they reach their terminal velocity. The size, density, and shape of objects determine the extent to which air resistance slows their fall. If the velocity of an airstream is greater than the terminal velocity of an object in that airstream, the object will be lifted. Aspirators are set to remove as much of the contaminant and as little of the usable product as possible. Multiple-pass aspirators can remove 90–99.6% of contaminants. However, living insects cling to grain and are not easily removed.
What is a destoner grader?
The destoner–aspirator–grader is required to enable farmers to sort and grade , as per the market demand, their produce at the farm gate or community level. This provides the farmers with bargaining power and linkage to the markets. A destoner–aspirator–grader ( Fig. 10.12A) is used to remove impurities like stones and foreign materials and also to separate different sizes of grains. The machine has three important components: destoner, which removes stones, mud balls, sand, and other heavier materials from the millet grains; aspirator, which removes high- and low-density impurities like husk, dust and sand; and grader, which sorts large grains from smaller grains in a batch.
About the author
Derek Lowe, an Arkansan by birth, got his BA from Hendrix College and his PhD in organic chemistry from Duke before spending time in Germany on a Humboldt Fellowship on his post-doc.
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What is an aspirator?
Aspirator. A medical instrument that uses suction to withdraw fluids from the lungs, digestive tract, or other parts of the body for laboratory testing. Mentioned in: Fluke Infections. Gale Encyclopedia of Medicine. Copyright 2008 The Gale Group, Inc. All rights reserved.
What is aspiration pneumonia?
Aspiration pneumonia is a pneumonia that develops due to the entrance of foreign material that enter the bronchial tree (air tubes), usually oral or gastric contents (including food, saliva, or nasal secretions). Aspiration pneumonia represents a either a bacterial infection or a chemical inflammatory process due to inadequate swallowing ...
What is suction pump?
A device for removing liquids or gases by suction, especially an instrument that uses suction to remove substances, such as mucus or serum, from a body cavity. 2. A suction pump used to create a partial vacuum. The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company.
Is aspiration pneumonia a bacterial infection?
Aspiration pneumonia represents a either a bacterial infection or a chemical inflammatory process due to inadequate swallowing mechanism. This content is provided by iMedix and is subject to iMedix Terms. The Questions and Answers are not endorsed or recommended and are made available by patients, not doctors.
What is an aspirator?
A brass aspirator. The water inlet and outlet are at the top and bottom, respectively; the air inlet is on the side. A vacuum ejector, or simply ejector is a type of vacuum pump, which produces vacuum by means of the Venturi effect .
What is an air ejector?
Air ejector. Commonly called an air ejector, Venturi pump, or vacuum ejector. This ejector is similar in operation to the steam ejector but uses high-pressure air as the working fluid. Multistage air ejectors can be used, but since air cannot easily be condensed at room temperature, an air ejector is usually limited to two stages as each subsequent ...
Why do vacuum pumps use steam ejectors?
Due to the lack of delicate moving parts and the flow of steam providing somewhat of cleaning action, steam ejectors can handle gas flows containing liquids, dust, or even solid particles that would damage or clog many other vacuum pumps.
How does an ejector work?
In an ejector, a working fluid (liquid or gaseous) flows through a jet nozzle into a tube that first narrows and then expands in cross-sectional area. The fluid leaving the jet is flowing at a high velocity which due to Bernoulli's principle results in it having low pressure, thus generating a vacuum. The outer tube then narrows into ...
Why use a condenser in a steam ejector?
Condensers are typically used between stages to significantly reduce the load on the later stages.
Is a vacuum pump more compact than a gas pump?
If a gas is used, however, this restriction does not exist. If not considering the source of the working fluid, vacuum ejectors can be significantly more compact than a self-powered vacuum pump of the same capacity.
Can steam ejectors pump liquid?
Steam ejectors are also suitable for pumping many liquids since if the steam can be easily condensed into the liquid then there is no need to separate the working fluid or manage a mist of liquid droplets. This is the manner in which a steam injector operates.
Suction Filtration Overview
Suction filtration (vacuum filtration) is the standard technique used for separating a solid-liquid mixture when the goal is to retain the solid (for example in crystallization).
Rinsing
As the goal of suction filtration is to fully separate a solid from its surrounding liquid, rinsing the solid is necessary if the liquid cannot easily evaporate. In the case of crystallization, the liquid may contain impurities that can reincorporate into the solid if not removed.
Water Aspirator
A vacuum source is necessary for suction filtration (and vacuum distillation). Although many science buildings come equipped with a house vacuum system (Figure 1.73a), solvents evaporating from a suction filter flask over time can degrade the oil pumps used in a house vacuum.
Step-by-Step Procedures
Figure 1.74: Suction filtration flask attached to a vacuum trap and water aspirator. The arrows show the direction of suction.
Contributor
Lisa Nichols (Butte Community College). Organic Chemistry Laboratory Techniques is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. Complete text is available online.
