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A burette (also spelled as buret) [1] is a graduated glass tube with a tap at one end, for delivering known volumes of a liquid, especially in titrations. It is a long, graduated glass tube, with a stopcock at its lower end and a tapered capillary tube at the stopcock's outlet.
Burette clamp is a scientific equipment which used specifically to hold and secure a burette on a stand, so that a burette is fixed and more convenient for the experiment. [1] Burette clamps can be made with many materials such as plastic and cast iron. However, an iron clamp with a rubber knob to hold the burette are usually more durable.
The gas is then passed into the Potassium Hydroxide (caustic potash) burette by opening the stop cock and lifting the leveling flask. This siphons water into the burette which pushes the gas into the absorption vessel. The gas is left to stand for about two minutes and then withdrawn, isolating the remaining gas via the stopcock arrangements.
Method of swirling an Erlenmeyer flask during titration. The slanted sides and narrow neck of this flask allow the contents of the flask to be mixed by swirling, without risk of spillage, making them suitable for titrations by placing it under the buret and adding solvent and the indicator in the Erlenmeyer flask. [7]
Teach kids ages 8 and up about the laws of physics with this comprehensive science kit featuring six different projects, including a rubber band car, sharpening wheel, and rocket launcher.
They come in a variety of sizes, and are used much like a burette, in that the volume is found by calculating the difference of the liquid level before and after. The last graduation mark is some distance from the tip, to avoid errors in measuring the narrower volume of the nozzle. [ 3 ]
Laboratory test tube brushes: small sized brushes on the left, large sized brushes on the right. A test tube brush or spout brush is a brush used for cleaning test tubes and narrow mouth laboratory glassware, [1] such as graduated cylinders, burettes, and Erlenmeyer flasks.
The pipette can be blown out by gravitational force or air pressure. Rubber bulbs attached to the end opposite the tip are commonly used to "blow out" any remaining solution. Having solution remain in the pipette can affect an experiment by allowing a discrepancy between what is measured and what is transferred.
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