Lefflers

Lefflers are a type of glassware commonly used in scientific laboratories, particularly in chemistry and biology. They are characterized by their distinctive shape, which consists of a cylindrical body with a narrow neck and a flat base. The name "Leffler" is derived from the German chemist and glassblower, Karl Leffler, who developed the design in the late 19th century.

Lefflers are typically made of borosilicate glass, which is known for its resistance to thermal shock and chemical corrosion. This makes them suitable for use with a wide range of chemicals and temperatures. The cylindrical body of a Leffler allows for easy mixing of liquids, while the narrow neck helps to prevent spills and evaporation.

Lefflers are often used for the preparation of solutions, the mixing of reagents, and the storage of samples. They can also be used for the transfer of liquids between containers, although their narrow neck can make this process more challenging. Due to their durability and versatility, Lefflers have become a staple in many laboratories around the world.