Volumetric flask

A volumetric flask is a type of laboratory glassware used for precise dilutions and preparing standard solutions.

Typically made of glass or plastic, it has a long neck and a flat bottom, with a single graduation mark indicating a specific volume. This design allows for accurate measurement of liquids, essential in quantitative analysis.

Volumetric flasks come in various sizes, commonly ranging from 10 mL to 2 L. They are used primarily in chemistry, biochemistry, and analytical laboratories. The flask is designed to hold a specific volume of liquid when filled to the marked line, ensuring precision in experiments.

When using a volumetric flask, it is crucial to fill it to the mark with the liquid at eye level to avoid parallax errors. After adding the solute, the flask is often swirled gently to mix the solution thoroughly. Its accuracy is vital for tasks like preparing calibration standards and diluting concentrated solutions.

Cleaning a volumetric flask requires careful handling to avoid scratches or residues that could affect future measurements. Overall, volumetric flasks are indispensable tools for achieving reliable and reproducible results in laboratory settings.