A volumetric flask is a type of laboratory glassware used for precise measurement of liquid volumes. It has a long neck and a flat bottom, allowing for accurate filling to a specific mark. These flasks are typically made of glass or plastic and come in various sizes, commonly ranging from 10 mL to 2 L. Volumetric flasks are essential in chemistry for preparing standard solutions and dilutions. The narrow neck helps minimize the risk of error when adding liquids, ensuring that the final volume is accurate. This precision is crucial for experiments and analyses in fields like chemistry and biochemistry.