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Alternatively, a beaker may be covered with another larger beaker that has been inverted, though a watch glass is preferable. Beakers are often graduated, that is, marked on the side with lines indicating the volume contained. For instance, a 250 mL beaker might be marked with lines to indicate 50, 100, 150, 200, and 250 mL of volume.
A classic 20-facet Soviet table-glass, produced in the city of Gus-Khrustalny since 1943. Tumblers are flat-bottomed drinking glasses. Collins glass, for a tall mixed drink. [5] Dizzy cocktail glass, a glass with a wide, shallow bowl, comparable to a normal cocktail glass but without the stem; Faceted glass or granyonyi stakan
The Lycurgus Cup, lit from behind, with a modern foot and rim.. The function of cage cups is debated. The inscriptions strongly suggest that they were cups to be used, and perhaps passed around, for ceremonial drinking at feasts, but it has been suggested that the shape of the out-turned rim of the beakers and the missing stand of all known vessels means that all diatreta were like the example ...
Claw beaker in Anglo-Saxon glass from the Ringlemere barrow, c. 400 to 600 AD The Maya Fenton Vase , 600-800 AD "Falcon warrior" shell cup, from the Spiro Mounds , eastern Oklahoma , 1200-1500
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 ...
A watch glass is a circular concave piece of glass used in chemistry as a surface to evaporate a liquid, to hold solids while being weighed, for heating a small amount of substance, and as a cover for a beaker. When used to cover beakers, the purpose is generally to prevent dust or other particles from entering the beaker; the watch glass does ...
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