A Laboratory Flask is a container used in scientific experiments and chemical reactions. The design of the flask allows for easy swirling and mixing of liquids without spilling. They are made from different materials such as glass, plastic, or sometimes metal, depending on the specific use and chemical compatibility required for the experiment. Flasks come in various sizes, from small volumes used in analytical chemistry to larger ones used in preparations and reactions. Laboratory Flask can range from a few milliliters to several liters, and they often have volume markings to aid in accurate measurements.