A beaker is a simply container commonly made of glass (especially borosilicate glass, these days), used for stirring, mixing and heating liquids used in laboratories. They are generally cylindricalin shape, with a flat bottom and a lip for pouring. This has been also called the “Griffin” form. These are the most universal characteristics and are used for various purposes, from preparingsolutions and decanting supernatant fluids to simple reactions. Many also have a small spout to aid pouring. Beakers are often graduated, that is, marked on the side with lines indicating the volumecontained.
Test tubes are also known as culture tubes or sample tubes, which is a common piece of laboratory glassware consisting of a finger-like length of glass or clear plastic tubing, open at the top,usually with a rounded U-shaped bottom. Large test tubes designed specifically for boiling liquids are called boiling tubes. These are commonly used for chemical reactions.
A graduated cylinder is alsoknown as a measuring cylinder and is a piece of laboratory used to take accurate measurements of the volume of an object. Often, largest cylinders are made of polypropylene because of its excellentchemical resistance, OR polymethylpentene for its clarity. These characteristics make them lighter to ship and less fragile than glass. Temperatures over 160 °C / 320 °F, may affect accuracy and canwarp or damage polypropylene cylinders.
A stirring rod is a piece of laboratory equipment used to mix chemicals and liquids for laboratory purposes. They are usually made of solid glass, about thethickness and slightly longer than a drinking straw.
Florence and Erlenmeyer flasks are practically the same except for the shape, and the uses. Florence flasks are generally used for boiling substances;and Erlenmeyer flasks are commonly used for titration, especially of ph. Erlenmeyer are named after the scientist (Emil) who created them in 1861. Florence are named after the Italian city Florence....
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