A beaker is a cylindrical container with a flat bottom and an open top, typically made of glass, used in laboratory settings for a variety of purposes). Some of the uses of a beaker include:

• Liquid containment: Beakers can be used to hold liquid or solid samples.
• Reaction container: Beakers can be used as a container for chemical reactions.
• Pouring: Beakers typically have a spout to facilitate pouring).
• Measurement: Some beakers have marks present on them to represent how much volume of liquid they hold.
• Mixing: Beakers can be used as mixing tools.

Beakers are commonly made of glass, but can also be made of metal or certain plastics). They are available in a wide range of sizes, from one milliliter up to several liters). Beakers are distinguished from flasks by having straight rather than sloping sides, although stackable beakers may have slightly sloping sides to allow them to stack.