Glass stoppers are used to seal the openings of glassware in a laboratory setting. They are made of glass and come in a variety of sizes to fit different types of glassware. Glass stoppers are commonly used in chemistry and biology laboratories to prevent contamination or evaporation of the contents in glass containers.
Glass stoppers can be made of different types of glass, such as borosilicate or soda-lime glass. Borosilicate glass is resistant to thermal shock and is often used in high-temperature applications, while soda-lime glass is less expensive and can be used for general laboratory applications.
Glass stoppers come in various shapes and sizes to fit different types of glassware. The most common shapes include tapered, straight, and conical. Tapered stoppers have a cone-shaped tip that is inserted into the glassware, while straight stoppers have a cylindrical shape that fits into the glassware. Conical stoppers have a cone-shaped body and a cylindrical tip that fits into the glassware.
To use a glass stopper, it is important to make sure that the stopper fits tightly into the glassware to prevent any leaks or evaporation of the contents. Glass stoppers should also be cleaned and sterilized before use to prevent any contamination.