The bulb is used to create a vacuum of sorts that helps to suck air and then draw the liquid into the device. They key to chemistry experiments is to use high-quality products that are tolerable to the hazardous chemicals in use and provide accurate readings.
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Common types of glassware include beakers, flasks, pipettes, and test tubes. Magi Studio / Getty Images Beakers are the workhorse glassware of any chemistry lab.
The spout makes it easy to pour liquids into other containers. Finally, the wide opening makes it easy to add materials to the beaker.
Bogdan Drama / Eye / Getty Images There are multiple types of flasks. For some situations, either a beaker or an Erlenmeyer flask is a good choice, but if you need to seal a container, it's much easier to put a stopper in an Erlenmeyer flask or cover it with para film than it is to cover a beaker.
Stuart Money / Getty Images Test tubes are good for collecting and holding small samples. Thanakorn Srabubpha / Eye / Getty Images Pipettes are used to deliver small volumes of liquids reliably and repeatedly.
This type of glassware isn't intended to be exposed to flames or extreme temperatures. Pipettes can be deformed by heat and lose their measurement accuracy under extreme temperatures.
It's almost always made of borosilicate glass so that it can withstand heating under a direct flame. ElementalImaging / Getty Images Volumetric flasks are used to prepare solutions.
Each features a narrow neck with a marking, usually for a single precise volume. Because temperature changes cause materials, including glass, to expand or shrink, volumetric flasks aren't meant for heating.
Knowing the proper use will help ensure safe laboratory practices. Bunsen Burner Frequently used as a heat source in the absence of flammable materials.
Funnel Used to transfer liquids or fine-grained materials into containers with small openings. Ring Stand Used to hold or clamp laboratory glassware and other equipment in place, so it does not fall down or come apart.
Thermometer (digital or alcohol, not mercury) Used to measure temperature in Celsius. Utility Clamp Used to secure glassware to a ring stand.
Volumetric Flask Used to prepare solutions to an accurate volume. Volumetric Pipe Used to measure small amounts of liquid very accurately.
Wash Bottle Used to rinse pieces of glassware and to add small quantities of water. Watch Glass Used to hold solids while they are being weighed or to cover a beaker.
Wire Gauze Used to support a container, such as a beaker, on a ring stand while it is being heated. For your security, this online session is about to end due to inactivity.
Glassware designed to contain, like graduated cylinders and volumetric flasks, are usually marked with a TC. When liquid is poured from a piece of glassware a small amount remains behind, clinging to the sides of the vessel.
Glassware designed to deliver, like pipes and bursts, are marked with a TD. When water is placed in a glass or plastic container the surface takes on a curved shape.
Volumetric glassware is calibrated such that reading the bottom of the meniscus, when it is viewed at eye level, will give accurate results. To achieve these accuracies the person using the device needs to use the proper technique and the measurements need to made at the temperature for which the glassware was calibrated (usually 20 degrees C).