A conical flask, also known as an Erlenmeyer flask, is a laboratory glassware container that has a flat bottom, a conical body, and a cylindrical neck. It is typically made of glass or plastic and has a narrow neck that can be closed with a stopper or a cap. Conical flasks are commonly used in chemistry and biology laboratories for mixing, heating, and storing liquids. The conical shape of the flask allows for easy swirling and mixing of liquids, and the flat bottom ensures that the flask can be placed on a flat surface without tipping over. The narrow neck of the flask allows for easy pouring of liquids, and can be closed with a stopper or a cap to prevent contamination or evaporation. Conical flasks come in a range of sizes, from small laboratory sizes to larger industrial sizes. They are also available with various markings on the side to indicate the volume of liquid in the flask. Some conical flasks are graduated, with markings indicating the volume of liquid at various levels. Other flasks may have a scale or a label indicating the volume of liquid that the flask can hold. Overall, conical flasks are a versatile and widely used piece of laboratory glassware, useful for a variety of laboratory applications.