Turn the stopcock lever to the off position by positioning the lever to point toward the stopcock.
Dispose of the syringe andstopcock as contaminated waste.
One 3-way sterile, plastic, stopcock with protective covers.
Ensure that the lever on the stopcock is turned sideways with the off arrow pointed toward the large outlet port.
To use the apparatus: Fill the tube with mercury by opening the clamp at H, and the stopcock at B, and raising the reservoir until the mercury, if allowed, would flow out of the beak.
Ordinary burette size will perhaps be the most suitable for routine work; the tube is furnished with a stopcock and is bent at B, the tube at K having a very small but not quite capillary bore.
When the ether has been sucked into the apparatus, it is emptied of mercury by lowering the reservoir, and then firmly clamped at H, and the stopcock also closed.
After waiting a little, and seeing that this all worked well, I placed my hand upon the stopcock of a more important pipe, namely the tank air-pipe, which led from the tanks to the outer surface of the superstructure.
Still another pipe pierced the roof, which was fitted with a stopcock outside as well as inside, and depended down into the boat some four feet from the roof.
By little turns of this stopcock I discovered, as I expected, that I could move the boat in a descending direction even an inch at a time.
A few turns of the stopcock of the tank air-pipe carried me near to the bottom, where I desired to be, to try my last and most important experiment.
When a stopcock is opened in any house the pressure of the gasometer pushes the gas through, it may be, miles of pipes, and out through the burner, where it may be lighted.
Many houses have a simple electric-lighting attachment, so that by merely turning a stopcock the gas is turned on and by pulling a chain an electric spark sets the gas on fire, flooding the room with light.
The nature of the gas in H or O may be tested by opening the stopcock and allowing the gas to escape slowly.
If a hollow metal sphere, or a glass flask, provided with tube and stopcock, be weighed when the stopcock is open, and then after the air has been exhausted from it by an air pump, a definite loss of weight is noticeable.
In the middle of this there is a stopcock situated between the two points where the bar joins the limbs of the V.
The stopcock is now turned until only the smallest flame exists.
This movement can be utilized by means of simple mechanical arrangements, to open or close the stopcock of a gas supply pipe.
When the oil is the heavier of the two, the receiver should be a large inverted cone, with a stopcock at its apex to run off the oil from the water when the separation has been completed by repose.
The horizontal straight end of the nozzle tube should be shut by screwing a stopcock air-tight into it.
At the bottom of the drum there is a stopcock to let off the condensed water.
These liquids flow over the edges of the inner vessel when it is full, and may, from time to time, be drawn off by the stopcock at the bottom of the cistern.
As soon as the distillation is fully set agoing, the stopcock upon the gas-pipe is opened; and after it is finished, it must be shut.
When the tanning is completed, the upperstopcock is closed, and the under is opened to run off the liquor.
A small escape-pipe for waste steam must be placed at the opposite side of the case or jacket, to ensure its equal distribution; as also a stopcock below, to let off the water of condensation.
By opening the stopcock and lowering the level tube any desired quantity of the gas can be aspirated over.
The clip is removed, the stopcock opened, and the level tube of the measuring apparatus raised, so that the gas passes into the first bulb.
It is then run back into the measuring tube by lowering the level tube, the stopcock is closed, and the volume noted.
Pour the urine into the smaller tube, and then turn the stopcock so as to let as much urine as desired (usually 1 c.
Pour some of the urine into the smaller tube of the apparatus, then open the stopcock and quickly close it so as to fill its lumen with urine.
Then the stopcock is turned on, a match applied to the burner, and the gasoline vaporizes and burns.
If necessary, regulate the stopcockand mixer, so that the flame is blue in color.
When a fairly good vacuum has been obtained, the stopcock is opened and the oil slowly fed in.
When the Sprengel pump had done its work, the reservoir R2 was further lowered and the mercury descended in R1 and filled R2, whereupon stopcock C2 was closed.
This arrangement overcomes the imperfections and troubles which often arise from the use of the stopcock on the reservoir and the connection of the latter with the fall tube.
During this process some air, which would gather below stopcock C2, was expelled from R2 by lowering it far enough and opening the stopcock, closing the latter again before raising the reservoir.
The reservoir R2 was now again raised until the mercury in R1 stood above stopcock C1.
The reservoir R1 was connected by means of a rubber tube to a slightly larger reservoir R2, each of the two reservoirs being provided with a stopcock C1 and C2, respectively.
If the two bottles are connected with each other and the stopcock be opened, the acid will flow to the zinc and evolve hydrogen.
The stopcock is then re-closed, and the explosion produced by means of a spark from a Leyden jar.
If the pressure of a gas be not greater than the atmospheric pressure and it be required to collect it in the gasholder, then the stopcock e is put into communication with the space containing the gas.
After the explosion has taken place the stopcock is again opened, and the water rises into the vessel A.
In order to show the combustion of oxygen in hydrogen, a tube bent vertically upwards and ending in a fine orifice is attached to the stopcock of a gas-holder full of oxygen.
When the air passes into T the stopcock R of the globe B is opened, and it becomes filled with nitrogen.
A funnel furnished with a stopcock and filled with water is fixed into the upper orifice of the retort, which is then filled with dry carbonic anhydride.
The vessel B communicates with the bottom of the funnel by a stopcock b and a tube a, reaching to the bottom of the vessel B.
If the vessel be filled up with water to the cork and the bottom stopcock is opened, then the water will run out and draw gas in.
The air is first pumped out of this vessel, so that when the stopcock C is opened, it becomes filled with detonating gas.
If the stopcock be closed, the hydrogen will force out the acid from the bottle containing the zinc, and the action will cease.
An aspirator usually consists of a vessel furnished with a stopcock at the bottom.
The tube is contracted at one extremity, and terminates in either a glass stopcock and delivery-tube, or in such a manner that a piece of rubber tubing may be firmly attached, connecting a delivery-tube of glass.
See that the stopcock (C) is open far enough to allow the acid to run through slowly.
Fill the burettes with distilled water, and allow the water to run out through the stopcock or rubber tip until convinced that no air bubbles are inclosed (Note 2).
The surface of thestopcock should then be smeared with a thin coating of vaseline and replaced.
By means of the stopcock the bromine is allowed to flow drop by drop into the flask, the reaction taking place without the application of heat.
As long as the stopcock is closed the water cannot rise in the inner tube.
To demonstrate the properties of solid carbon dioxide, the cylinder should be placed across the table and supported in such a way that the stopcock end is several inches lower than the other end.
When the stopcock is open the water rises, and, coming into contact with the carbide in the inner tube, generates acetylene.
Connection is made from the stopcock R to the hose connection on the lantern proper, and this is the passageway of the gas from the generator to the burner.
As soon as the stopcock is opened the water rises through the tube and flows to the carbide.
That thestopcock R is closed before inserting the frame in the water.
Connect the rubber tube to the burner before opening the stopcock on the generator.
The outlet from this chamber is by a brass bent tube having a stopcock attached thereto.
This arrangement overcomes the imperfections and troubles which often arise from the use of the stopcock on the reservoir and the connections of the latter with the fall tube.
Hence, the stopcock of my cylinder, when fully open, expends 27 cubic feet per hour, with a flame at least six times as strong as that of the large lamps used for lighting streets.
Allow me to turn the stopcock of the cylinder, and we'll not be long in descending.
D is the stopcockconnected with the starting lever, which is about 6 in.
At the same instant, Hans sat up in bed, and turned the stopcock of the hose.
In the room where you are to sleep to-night," said Kenneth, "there is a hose pipe with a stopcock nozzle.
He showed Hans how to turn the stopcock and let the water fly at the spook.
The broken end of the tube on the stopcock is now squared off as well as possible, by cutting or by heating and drawing off the projections, and the new tube sealed on, usually with the first method (Exercise No.
It frequently happens that one of the tubes of the stopcock is broken off close to the cock itself, and a new one must be joined to the stub of the old one.
The two surfaces in the stopcock are usually grinding upon each other at this stage, and inspection will show whether the contact between them is uniformly good.
If the break is very close to the stopcock, very little reheating and blowing can be done, on account of the danger of getting the stopcock sleeve out of shape, and the work must be heated very slowly to prevent cracking.
The plug of the stopcock occasionally falls out and is broken.
Hull leaped to his feet and sprang toward it, at the same time, by a turn of the stopcock by his side, setting the gas in both rooms at full blaze.
Hull touched the stopcock in the wall by his side, turning on the gas in both parlours, and proceeded to unlock and open the hall-door.
Let the stopcock C be then opened and while the temperature of the steam in A shall continue to be 243 deg.
If the vessel B be heated, and the two cocks be opened, the steam proceeding from the water in B will blow the air out of the vessel A through the open stopcock D, in the same manner as air is blown from a steam engine.
If the stopcock be now closed, and the whole apparatus be exposed to the temperature of 243 deg.
Again, suppose the vessel A to be filled with pure steam which has been produced from the heated water in B, the stopcock C being open.
In fact, by opening thestopcock the steam which was before superheated steam, has become common steam.
If the stopcock C be now opened, the steam in A will be immediately observed to rise to the more elevated temperature which has been imparted to the water in B, and at the same time it will acquire an increased pressure.
Let D be a pipe and stopcock at the top of this vessel.
Let the stopcock C be then closed, and the water in B be heated to a higher temperature, the temperature and pressure of the steam in A being observed.
As an additional precaution against its being left open, the stopcock may be provided with a weight or spring which automatically closes the gas-way directly the observer's hand is removed from the tap.
Where the gas finally leaves the generating-house, or where it enters the residence, a full-way stopcock should be put on the main.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "stopcock" in a variety of sentences. We hope that you will now be able to make sentences using this word. Other words: cock; faucet; gate; hydrant; spigot; tap; value; valve
