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The Marcusson apparatus, Dean-Stark apparatus, Dean–Stark receiver, distilling trap, or Dean–Stark Head is a piece of laboratory glassware used in synthetic chemistry to collect water [1] [2] (or occasionally other liquid) from a reactor.
An evaporating dish is a piece of laboratory glassware used for the evaporation of solutions and supernatant liquids, [a] and sometimes to their melting point.Evaporating dishes are used to evaporate excess solvents – most commonly water – to produce a concentrated solution or a solid precipitate of the dissolved substance.
These flasks are usually pear-shaped, with a flat bottom, and made of glass or plastic. The flask's mouth is either furnished with a plastic snap/screw cap or fitted with a joint to accommodate a PTFE or glass stopper. The neck of volumetric flasks is elongated and narrow with an etched ring graduation marking. The marking indicates the volume ...
According to The Glass Museum, the glow-in-the dark glassware is believed to have been invented by glassmaker Josef Riedel, who used uranium to color glassware in his factory in Bohemia in the mid ...
Flint glass melted in tank: In 1898 Charles H. Runyon of the Keystone Glass Company in Rochester, Pennsylvania, was the first in the United States to melt the batch for flint glass in a tank. [21] Note 11 ] A second source calls the Rochester company operating at that time (1897–1905) by the name of Keystone Tumbler Company.
The glass made using this formula had good enough quality that the company could compete in the high-end of the glassware market. [62] This improvement in the formula for glass was considered one of two great advances in American glassmaking during the 19th century, the other being the invention of pressing. [63]
Brown glass jars with some clear lab glassware in the background Laboratory glassware may be made from several types of glass , each with different capabilities and used for different purposes. Borosilicate glass is a type of transparent glass that is composed of boron oxide and silica, its main feature is a low coefficient of thermal expansion ...
The physical origin of the non-Arrhenius behavior of fragile glass formers is an area of active investigation in glass physics. Advances over the last decade have linked this phenomenon with the presence of locally heterogeneous dynamics in fragile glass formers; i.e. the presence of distinct (if transient) slow and fast regions within the material.