Which lab item is normally used to accurately measure liquid reagents?

• A. Beaker
• B. Graduated Cylinder
• C. Pipette
• D. Volumetric Flask

Answer: (B)

Accurate measurement of liquid volumes relies on selecting a tool with calibrated markings designed for the task. A graduated cylinder is specifically built for measuring liquids with moderate precision. It has marked graduations along its length and you read the volume at eye level from the bottom of the meniscus, which gives a more reliable reading than a beaker. While a pipette can be extremely precise for delivering a known small volume, it’s typically used to transfer that exact amount rather than to measure larger volumes directly. A volumetric flask is designed to contain a precise final volume for solution preparation, not for general measuring of varying amounts. So, for normally measuring liquid reagents with good accuracy, the graduated cylinder is the best-fitting instrument.