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Beakers are commonly made of glass (today usually borosilicate glass [3]), but can also be in metal (such as stainless steel or aluminum) or certain plastics (notably polythene, polypropylene, PTFE). A common use for polypropylene beakers is gamma spectral analysis of liquid and solid samples. Beakers of different sizes
Older clear-glass Pyrex manufactured by Corning, Arc International's Pyrex products, and Pyrex laboratory glassware are made of borosilicate glass. According to the National Institute of Standards and Technology , borosilicate Pyrex is composed of (as percentage of weight): 4.0% boron , 54.0% oxygen , 2.8% sodium , 1.1% aluminum , 37.7% silicon ...
Hedwig glasses or Hedwig beakers are a type of glass beaker originating in the Middle East or Norman Sicily and dating from the 10th-12th centuries AD. They are named after the Silesian princess Saint Hedwig (1174–1245), to whom three of them are traditionally said to have belonged. [ 1 ]
Three beakers, an Erlenmeyer flask, a graduated cylinder and a volumetric flask. Laboratory glassware is a variety of equipment used in scientific work, traditionally made of glass. Glass may be blown, bent, cut, molded, or formed into many sizes and shapes. It is commonly used in chemistry, biology, and analytical laboratories.
The beakers were mainly produced in Bohemia, Saxony, Thuringia, Hesse and in the Fichtelgebirge. The significance of the imperial eagle beakers for the glassware craft in those regions can be seen by the fact that the glassmakers' guild of the Bohemian Kreibitz in 1669 demanded the production of an imperial eagle beaker as a masterpiece in one ...
Borosilicate glass is a type of glass with silica and boron trioxide as the main glass-forming constituents. Borosilicate glasses are known for having very low coefficients of thermal expansion (≈3 × 10 −6 K −1 at 20 °C), making them more resistant to thermal shock than any other common glass.
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