An electrically-operated pump for this purpose would usually be called a vacuum pump.
Secondly was the vacuum back, the film (large-format single sheet film) was placed here and held in position by a vacuum pump.
Once this interval is reached, the vacuum pump is shut off and the vacuum chamber release valve is opened to equalize air pressure.
The material container is then placed into the vacuum chamber; a vacuum pump is connected and turned on.
A specialized vacuum pump is attached to the bleeder valve, which is opened and fluid extracted with the pump until it runs clear of bubbles.
An experimental advantage of discharges in ammonia is that all discharge products are gaseous and can easily be removed by a vacuum pump leaving a clean discharge chamber.
A thermostat-controlled vacuum pump connected to the same perforated pipes as serving for leachate collection (as common in bioremediation pile design) draws air from inside the greenhouse into the pile.
Green asparagus (10 g) was rapidly crushed in a flask fitted to another flask immersed in liquid nitrogen and connected to a vacuum pump.
